CN106367792A - Aluminum pretreatment alkaline three-in-one online recycling system for demolding alkaline liquor for extruding mold aluminum material heads and aluminum hydroxide - Google Patents

Aluminum pretreatment alkaline three-in-one online recycling system for demolding alkaline liquor for extruding mold aluminum material heads and aluminum hydroxide Download PDF

Info

Publication number
CN106367792A
CN106367792A CN201611004206.7A CN201611004206A CN106367792A CN 106367792 A CN106367792 A CN 106367792A CN 201611004206 A CN201611004206 A CN 201611004206A CN 106367792 A CN106367792 A CN 106367792A
Authority
CN
China
Prior art keywords
alkaline
valves
slag
groove
aluminum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611004206.7A
Other languages
Chinese (zh)
Other versions
CN106367792B (en
Inventor
熊晨凯
熊映明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FOSHAN SANSHUI XIONGYING INNOVATIVE CENTER FOR ALUMINUM SURFACE TECHNOLOGIES Co Ltd
Original Assignee
FOSHAN SANSHUI XIONGYING INNOVATIVE CENTER FOR ALUMINUM SURFACE TECHNOLOGIES Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FOSHAN SANSHUI XIONGYING INNOVATIVE CENTER FOR ALUMINUM SURFACE TECHNOLOGIES Co Ltd filed Critical FOSHAN SANSHUI XIONGYING INNOVATIVE CENTER FOR ALUMINUM SURFACE TECHNOLOGIES Co Ltd
Priority to CN201611004206.7A priority Critical patent/CN106367792B/en
Publication of CN106367792A publication Critical patent/CN106367792A/en
Application granted granted Critical
Publication of CN106367792B publication Critical patent/CN106367792B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/16—Pretreatment, e.g. desmutting
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • ing And Chemical Polishing (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention discloses an aluminum pretreatment alkaline three-in-one online recycling system for demolding alkaline liquor for extruding mold aluminum material heads and aluminum hydroxide. The recycling system for the demolding alkaline liquor for extruding the mold aluminum material heads and the aluminum hydroxide is arranged in an alkaline three-in-one dull-polish groove and comprises a collecting tank for the demolding alkaline liquor for extruding the mold aluminum material heads, a sedimentation pond, a centrifugal machine collecting pond, a first pump, a second pump and a pipeline; a slag drawing circulation sub-system, a blockage self-saving sub-system, an aluminum hydroxide and alkaline liquor recycling sub-system and a circulation sub-system of the demolding alkaline liquor for extruding the mold aluminum material heads are mainly formed; and therefore, the demolding alkaline liquor for extruding the mold aluminum material heads and alkaline etching liquid can be subjected to alkaline liquor and aluminum hydroxide online recycling, and huge waste of aluminum resources is reduced. By means of the aluminum alloy surface pretreatment alkaline three-in-one online recycling total system for the demolding alkaline liquor for extruding the mold aluminum material heads and the aluminum hydroxide, the problem that the pipeline, valves and the pumps are blocked by aluminum scale can be thoroughly eradicated, and the beneficial effects of waste water zero discharging, industrial waste slag reducing, low chemical consumption, water saving and scale blockage avoidance are achieved.

Description

Aluminum pre-treatment alkalescence three-in-one with pot mould liquid and aluminium hydroxide online recycling system
Technical field
The present invention relates to aluminium alloy anode oxide surface pretreatment technical field, more particularly, to aluminum pre-treatment alkalescence are three-in-one With pot mould liquid and aluminium hydroxide online recycling system.
Background technology
Traditional aluminium alloy alkaline etching technique has continued to use more than 100 year.Alkaline etching has aluminum consumption height, alkaline consumption is high, alkaline residue is many, technique Difficult control, the drawback such as defect is many, production cost is high, environmental pollution is big, already recognized by industry.Existing standard alkaline etching oxidation Wire casing position is arranged shown in Fig. 3, wherein, 4#, 7#, 10#, 13# and 16# groove be work nest, each work nest joins two running water wash Groove, oxidation pre-treatment needs 9 groove positions, and 4# alkaline etching groove is surface pretreatment groundwork groove.Oxidation pre-treatment each groove function is such as Under:
(1) 1# degreasing tank:
The purpose of oil removing is to remove natural oxide film, finger stricture of vagina and the coherent dirt with oils and fatss, to ensure aluminium table Face energy homogeneous corrosion, and protect the cleaning of alkaline etching groove.Oil removing is bad, and alkaline etching is just uneven, there is piebaldism, surface after heat-tinting Unequal flaw.Electrochemical deoiling can be using alkalescence, neutral or acid deoiling agent.Domestic general employing aoxidizes spent acid oil removing, sometimes Add a small amount of cation or amphoteric surfactant, improve oil removal efficiency.Exist not enough as follows: the 1, aluminum to resting period length Material, oil removing is bad, and natural oxide film can not take off totally, and alkaline etching is uneven, and various luster in aluminium material surface, and heat-tinting is uneven Even；2nd, degreasing tank sulphuric acid containing 150-200g/l, easily entrains alkaline etching groove, neutralizes Caustic soda；In order to strengthen oil removing ability, part producing Producer add in degreasing tank 5-15g/l about ammonium acid fluoride, thoroughly eliminate oil removing hidden danger, but increased the fluorine-containing and ammonia of process The pressure of nitrogen waste water.
(2) 2# and 3# circulating water washing trough:
2# and 3# is circulating water washing trough, and tap water is flowed into by 3# groove, and 2# groove flows out, differential concatenation.Setting twice washing Purpose is the acid solution that cleaning 1# groove is taken out of, protects alkaline etching groove.The highly basic from the strong acid of 1# groove to 4# for the aluminium, the use of middle rinsing bowl The water yield is crucial, generally 3.0-5.0 ton/ton material.The so big water yield, still has part acid solution and brings alkaline etching groove into.
(3) 4# alkaline etching groove:
The purpose of alkaline etching is natural oxide film, further oil removing, increases aluminium brightness, or dusting, removes stricture of vagina, does sub- light Material.Aluminum and Alkaline etchant generation following chemical reaction during alkaline etching:
al2o3+ 2naoh=2naalo2+h2O (removing natural oxide film) (1)
al+2naoh+2h2O=2naalo2+3h2↑ (dissolving aluminum, leveling, dusting) (2)
naalo2+2h2O=al (oh)3↓+naoh (generating aluminium hydroxide, regeneration alkali liquor) (3)
2al(oh)3=al2o3.3h2O (cell wall fouling, blocking pipeline) (4)
(2)+(3) formula, aluminium is in being in the nature that alkali groove reacts
2al+6h2O=2al (oh)3↓+3h2↑ (5)
I.e. aluminum reacts with water, while generating aluminium hydroxide, renewable whole sodium hydroxide.By reaction equation (2)-(5), mesh Before employ two kinds of alkaline etching schemes, one is the alkali collection scheme being not added with chelating agent, and two are plus stricture of vagina scheme is gone in the dusting of chelating agent.
The alkaline etching technique that Japan adopts, general alkaline etching groove not doping, using Bayer process, regenerate alkali liquor, reclaim hydrogen-oxygen Change aluminum.4# groove is equipped with slag pumping system, as shown in 4 figures；When free alkali controls in 60g/l, aluminium ion concentration close to 30g/l, partially Sodium aluminate resolves into aluminium hydroxide and sodium hydroxide, and aluminium hydroxide sediment is processed by slag pumping system, reclaims aluminium hydroxide, after scarfing cinder Clear liquid draw back 4# groove, alkali liquid regeneration.
The alkaline etching technique that Italy adopts, in alkaline etching groove doping, such as Sorbitol, Portugal's sodium etc., using polyhydroxy chemical combination Secondary alcohol groups choh complexation aluminium ion in thing, reaction equation is:
c6h14o6+3naalo2=al3c6h11o9+ 3naoh (Sorbitol complexation aluminium ion) (6)
3nac6h11o7+naalo2+2h2O=al (c6h11o7)3+ 4naoh (Portugal's sodium complexation aluminium ion) (7)
When aluminum dissolving and aluminum ions take balance out of when, up to 80-120g/l, tank liquor is stable, unclear for aluminium ion concentration Groove.
(4) 5# and 6# circulating water washing trough:
The purpose arranging this twice circulating water washing trough is cleaning alkali liquor, protects neutralization chamber.Equally, tap water enters from 6# groove, 5# groove goes out, differential concatenation.Aluminium, from highly basic to strong acid, needs massive laundering, and general water consume is 3.0-5.0 ton/ton material, and 4# groove adds alkali After erosion agent, viscosity is bigger, and washing pressure is bigger, and part alkali liquor is brought 7# neutralization chamber into and can hardly be avoided, and consumes neutralization chamber acid solution.
(5) 7# neutralization chamber:
Setting 7# neutralization chamber purpose be remove residue in ash shape attachment on aluminium, dissolve the insoluble manganese of alkali groove, copper, The alloying elements such as ferrum or impurity, to obtain brighter metal surface, the alkali liquor of neutralization aluminium material surface residual simultaneously.If dust Do not have cleared, gloss obfuscation after coloring will be led to.
Domestic aluminium section bar plant a very long time adopts single sulphuric acid neutralization, and the few section bar of impurity can be reached with single sulphuric acid To prescription, oxidation spent acid both can be utilized, also can avoid cross-contamination, low cost.For some with the enterprise more than aluminium scrap, type Ferrum, copper, manganese severe overweight in material, aluminium material surface after alkaline etching has the grey black that thick layer is thick, at this moment only sulphuric acid be difficult to cleared.Many Producer adopts the sulphuric acid of 150-200g/l, the nitric acid mixing of 30-50g/l, energy thoroughly ash disposal.Add nitric acid another benefit be Using its passivation, protect aluminium so as to washing before oxidation does not produce spot corrosion and flakes corrosion during waiting to expect.But nitre The use of acid, needs massive laundering, in case bringing oxidation trough into；Waste water containing nitrate anion, increased the pressure processing ammonia nitrogen.
(6) 8# and 9# rinsing bowl:
The purpose arranging this twice rinsing bowl is cleaning neutralization tank liquor, protects oxidation trough.Equally, tap water enters from 9# groove, 8# groove goes out, differential concatenation.Aluminium, from neutralization chamber to oxidation trough, needs massive laundering, reduces the risk that nitric acid brings oxidation trough into, typically Water consume is 3.0-5.0 ton/ton material.
(7) 10# oxidation trough:
The function of this groove is oxygenerating film.With the increase of amount of oxidation, the aluminium ion of oxidation trough constantly rises, and works as aluminium ion When concentration is more than 20g/l, oxide-film is loose, and some oxidation solutions are outwelled by part producer, and part producer adopts resins exchange.The former is unrestrained Take a large amount of sulphuric acid, the latter wastes and uses water in a large number.In addition, the oxidizing temperature of this groove controls at 18-22 DEG C, need to freeze, under low temperature Resistance is too big, and power consumption is too big, and under standard film, ton material power consumption is 1000 degree, has very big energy-saving space.Oxidation trough Oxidizing temperature, electrical conductivity, pole plate distance and aluminum ions method process and need improvement badly.
In addition to the minority producers such as the winged Aluminum in west are using Japanese alkaline etching technique, China's major part aluminum fabrication plant is using Italy's work Skill, two methods cut both ways.
The alkaline etching technique of Japan, using alkali liquid regeneration, reclaims the mode of production of aluminium hydroxide, as shown in Figure 4.Slag pumping system Become with pump group by sedimentation tank, partial crystallization pond, recovery pond and supporting valve, pipeline.Open valve 1,2, open pump 1, extract precipitation Pond clear liquid, to alkaline etching groove bottom land, using the positive thrust of pump 1, the aluminium hydroxide decomposing in 4# alkaline etching groove agitation floats, passes through Overflow, muddy Alkaline etchant flows back to sedimentation tank, precipitated aluminium hydroxide, and sedimentation tank clear liquid draws back 4# alkaline etching groove by pump 1 again.So follow Ring, aluminium hydroxide is constantly accumulated in sedimentation tank.Open valve 4,5,6, open pump 2, the precipitation of sedimentation tank at the bottom of pond is evacuated to analysis Brilliant pond, opens stirring, and aluminium hydroxide progressively separates out.Open valve 7,8, open centrifuge, alkali liquor flows to recovery pond, solid conduct Aluminium hydroxide primary product reclaims.Close valve 2, open valve 1,3, open pump 1, the alkali liquor of recovery pond is drawn back alkaline etching groove, complete Become alkali collection.
The alkaline etching technique of Italy, using aluminium ion complexation method, in alkaline etching groove, aluminium ion, regardless of parsing, does not produce hydrogen Aluminium oxide, without taking out slag, is not equipped with slag pumping system.After complexation, aluminium ion concentration is up to more than 100g/l, the dissolving of aluminum and tank liquor The aluminum taken out of can dynamic equilibrium.By viscous elasticity, the response speed of aluminium material surface is more than the response speed of mechanical line bottom of trench, can go Stricture of vagina, sand facestock can be done.
Two kinds of alkaline etching methods, cut both ways:
1st, from the point of view of the outward appearance of aluminium alloy after the alkaline etching, using alkali reclaiming method, tank liquor aluminium ion concentration is less than 30g/l, alkali React too fast during erosion, aluminum consumption is too high, and aluminium surface easily produces spot corrosion and excessive erosion, the slag pumping system particularly pressing Fig. 2 runs, pump 1 is not to take out slag, but blows slag, and precipitation blows afloat from bottom land, is suspended in whole groove Alkaline etchant, during aluminium alloy alkaline etching, the solid of suspension Particle adhesion aluminum alloy surface, forms the surface defects such as spot corrosion.If doing sand facestock, the alkaline etching time more than 10 minutes, due to groove Liquid aluminium ion concentration is too low, and corrosion of aluminium alloy amount is too big, goes mechanical line not thorough, and aluminium surface easily forms excessive erosion.Using adding Plus alkaline etching agent method, up to more than 100g/l, in Alkaline etchant, no solid particle separates out aluminium ion concentration, aluminium surface no spot corrosion, no Excessive erosion；When doing frosted material, can thoroughly remove mechanical line, sand face is fine and smooth, aluminum consumption is low.
2nd, from the point of view of reagent consumption, using alkali reclaiming method, tank liquor viscosity is low, and it is little that consumption taken out of by tank liquor；(3) formula of pressing, partially Sodium aluminate resolves into aluminium hydroxide and sodium hydroxide, while reclaiming aluminium hydroxide, also reclaims sodium hydroxide, reduces alkali further Consumption.Using adding alkaline etching agent method, alkaline etching tank liquor viscosity is high, and it is huge that consumption taken out of by tank liquor；Press (6), (7) formula, sodium metaaluminate is complete Entirely it is complexed, does not decompose aluminium hydroxide, do not reclaim sodium hydroxide.From the point of view of actual big production run, add alkaline etching agent method ratio Alkali reclaiming method, the consumption of sodium hydroxide is more than 3 times.
3rd, from the point of view of aluminum consumption, using alkali reclaiming method, tank liquor aluminium ion concentration is low, and by (1) (2) formula, sodium metaaluminate is dense Degree is low, and aluminum consumption is high.Using adding alkaline etching agent method, by (6), (7) formula, sodium metaaluminate is complexed completely, does not decompose aluminium hydroxide, Aluminium ion concentration is high, and by (1) (2) formula, aluminum consumption is low.From the point of view of actual big production run, add alkaline etching agent method than alkali collection side Method, the consumption of aluminum is below 40%.
4th, from the point of view of tank liquor management, using alkali reclaiming method, run by the slag pumping system of Fig. 2.(4) formula of pressing, aluminium hydroxide Change into the hydrate aluminum dirt of aluminium oxide, be attached to cell wall, pipeline, valve and pump of Alkaline etchant process etc., damage pump and valve Door, blocks pipeline.In order to avoid blocking pipeline, design pump 1 is not to take out slag, but blows slag, and precipitate blows afloat from bottom land, using pump 1 positive thrust, the aluminium hydroxide decomposing in 4# alkaline etching groove agitation floats, and by overflow, muddy Alkaline etchant flows back to precipitation Pond, precipitated aluminium hydroxide, sedimentation tank upper surface clear liquid draws back alkaline etching groove again by pump 1.So circulate, aluminium hydroxide is in sedimentation tank In constantly accumulate.Pump 1 not using take out slag and with blowing slag, basic reason be worry 4# alkaline etching groove bottom land blow slag pipe fouling, blocking The reason of pipeline.So blow slag, solid particle is suspended in whole groove Alkaline etchant, during aluminium alloy alkaline etching, the solid particle of suspension glues Attached aluminum alloy surface, forms the surface defects such as spot corrosion.Although part solves the problems, such as line clogging, bury impact aluminium alloy table The hidden danger of face quality.Terrified, as shown in Fig. 2 slag pumping system is by sedimentation tank, partial crystallization pond, recovery pond and supporting valve, pipe Road becomes with pump group, these ponds, pipe, valve and pump, has the risk of fouling and clogging everywhere, safeguards the normal operation of this set system, and ten Divide difficulty.Using adding alkaline etching agent method, by complete complexation, aluminium ion concentration is up to more than 100g/l, Alkaline etchant for sodium metaaluminate Middle no solid particle separates out it is not necessary to take out slag, the aluminum autobalance taken out of in the dissolving of aluminum and tank liquor, and tank liquor is very easy to pipe Reason, produces simple.
5th, from the point of view of environmental angle, using alkali reclaiming method, tank liquor viscosity is low, and it is little, in wastewater treatment that consumption taken out of by medicament The spent lye that the heart is processed is few, and the waste soda residue of generation is few；(3) formula of pressing, sodium metaaluminate resolves into aluminium hydroxide and sodium hydroxide, online While reclaiming aluminium hydroxide, also reclaim sodium hydroxide, reduce alkaline consumption further.Using interpolation alkaline etching agent method, alkaline etching tank liquor Viscosity is high, and it is huge that consumption taken out of by medicament；Press (6), (7) formula, sodium metaaluminate is complexed completely, does not decompose aluminium hydroxide, does not reclaim Sodium hydroxide.The dissolving of aluminum is taken out of by tank liquor realize autobalance completely.From the point of view of actual big production run, add alkaline etching agent side Than alkali reclaiming method, tank liquor takes consumption out of more than 4 times to method.So substantial amounts of Alkaline etchant brings 5#, 6# circulating water washing trough into, flows into Wastewater treatment center, had both needed substantial amounts of acid neutralization, and had been also consumed by substantial amounts of polyacrylamide, produces substantial amounts of Aluminiferous waste slag.System Meter shows, the aluminum processing enterprise of 1000 tons of daily output, consumes 0.5 ton of polyacrylamide daily, produces more than 100 tons waste residues.These Aluminiferous waste slag, from pot mould liquid, Alkaline etchant and oxidation solution, wherein, the contribution of Alkaline etchant accounts for more than 80%.
The drawbacks of through last 100 yearses application, alkaline etching technique, is completely exposed already.Particularly emphasize to clean the today carried out production strictly in line with rules and regulations, This set technique has following several respects to need to be greatly improved:
1st, suggestion of process design is unreasonable.1# and 7# be highly acid tank liquor, 4# be strong basicity tank liquor, aluminium need to from strong acid to Highly basic, processed from highly basic to strong acid again, although middle each twice rinsing bowl is set, also unavoidable channelling, the medicament of work nest Consume mutually；
2nd, complex process, groove position is many.Before oxidation trough have altogether 9 groove positions, 3 work nests, 6 rinsing bowls, excessively numerous and diverse；
3rd, effect is low.Will be through 9 grooves before aluminium material oxidation, wherein 3 work nests response time also to be taken, a general extension Material is washed from 1# degreasing tank to 9# and is treated that hopper needs 25-30 minute.Time-consuming, seriously constrains the production capacity of oxidation line；
4th, work nest is many, and chemical consumption amount is big.1#, 4#, 7# be work nest, total reagent consumption amount be 60-80 kilogram/ Ton material, for processing the waste water containing these chemical agents, aluminum material factory will spend bigger cost；
5th, rinsing bowl is many, and water consumption is big.6 rinsing bowls, total water consumption is 10.0-15.0 ton/ton material.Remove and use water cost Outward, the process of these waste water and discharge, all needs additionally to pay environmental protection cost；
6th, 1# groove is fluorine-containing, hampers waste water recycling；
7th, 1# and 7# groove contains ammonia nitrogen, so that the difficulty of wastewater treatment is made the matter worse.Fluoride waste is unable to reuse, nitrogen-containing wastewater Can not discharge, producer is absorbed in the quagmire of NH_3-N treating again.
8th, 4# alkaline etching groove, small part aluminum fabrication plant selects alkali reclaiming method, and most of producer is from interpolation alkaline etching agent method. The former loses aluminium alloy presentation quality, and slag pumping system fouling is it is difficult to control；The latter's alkaline consumption is high, and cost for wastewater treatment is high, and waste residue is too Many, environmental protection pressure is big；
9th, the aluminium ion in Alkaline etchant, through 5#, 6# circulating water washing trough, enters waste water center, forms industrial residue, both wave Take bauxite resource, increase environmental protection pressure again.
Industrial residue produced by aluminum processing enterprise, essentially from pot mould liquid, Alkaline etchant and oxidation solution, wherein Alkaline etchant tribute Offer more than 80%, pot mould liquid contributes 15% about, oxidation solution contribution 5% about.
Pot mould liquid refers to alkali liquor used by the extrusion die aluminum stub bar demoulding.During fluting, pot mould liquid naoh concentration is in 300-400g/ Between l, chemical reaction is carried out by (1)-(5) formula.With the increase of pot modulus, aluminium ion concentration rises, under pot mould speed is continuous Fall, when aluminium ion reaches 60-80g/l, pot mould is too slow, needs down groove, forms waste liquid.Produce 100000 tons of aluminum material factory per year, pot mould gives up Liquid measure is 5000 tons about, and molten aluminum amount is more than 300 ton, and potential economic worth is very big.Modern aluminum processing enterprise, has pot mould to give up Liquid is in need of immediate treatment, and existing processing method is excessively simple.One is directly to be discharged into wastewater treatment center, both increased and is processed into This, waste bauxite resource again；Two Shi Qing professional treatment producers pull away.These treatment plants, if pot mould salkali waste of single-item handling magnanimity Liquid, need to consume the acid solution of magnanimity, and society has paid the processing cost of costliness, not only do not utilized its economic worth, on the contrary for this In order to process this waste liquid, the heavy environmental burden of back.China special 201320875536.9 proposes to use in pot mould liquid and anode The method that oxidation solution reclaims aluminium hydroxide, can reclaim the aluminium hydroxide meeting the requirement of GB gb4294-2010 really.But this side Method sacrifices the alkali liquor of this recoverable, and the sulphuric acid in oxidation solution.There is provided by Chinese patent 201410126857.8 Method, chemically individually can crystallize aluminium ion from oxidation solution, produce ammonium alum, sulphuric acid all recycles.Accordingly, it would be desirable to Research individual processing pot mould liquid, the method reclaiming aluminium hydroxide therein and alkali liquor.
Alkaline etching groove adds chelating agent, aluminium ion regardless of parsing, the dissolving of aluminum and take achievable dynamic equilibrium out of, except satisfaction Outside aluminium appearance requirement, tank liquor management is very simple, but ignores a fatal defect, and that is, high aluminium ion concentration, height are viscous The Alkaline etchant of degree brings 5#, 6# circulating water washing trough into, enters waste water center, forms industrial residue, both wasted bauxite resource, and brought huge Environmental protection treatment pressure.
Content of the invention
It is an object of the invention to proposing the recovery system of a kind of pot mould liquid and aluminium hydroxide it is achieved that effectively to pot mould liquid Processed with Alkaline etchant, reclaimed the alkali liquor in pot mould liquid and Alkaline etchant and aluminium hydroxide.
Further object is that propose a kind of aluminum alloy surface pre-treatment alkalescence three-in-one with pot mould liquid and hydrogen Aluminium oxide online recycling total system, has wastewater zero discharge, reduces industrial residue, the medicine low, using water wisely of consumption, non-scaling blocks, The features such as simultaneously realize to the alkali liquor in pot mould liquid and Alkaline etchant and aluminium hydroxide online recycling.
For reaching this purpose, the present invention employs the following technical solutions:
A kind of pot mould liquid and the recovery system of aluminium hydroxide, are arranged at alkaline three-in-one frosted groove, comprising: pot mould liquid is collected Tank, sedimentation tank, centrifuge, collecting pit, a pump, No. two pumps and pipeline；Described alkaline three-in-one frosted groove passes through pipeline from it Dreg-drawing pipe take out that slag outfan is sequentially connected a described pump and described sedimentation tank take out slag input, and by described sedimentation tank Take out slag outfan and be back to it and take out slag input, and regulated and controled by first control device, formed and take out slag cycle subsystem；
It is defeated to its thin slag from its thin slag outfan described blowback of connection that described alkaline three-in-one frosted groove passes through pipeline Enter end, and regulate and control by second control device, formation blocking is saved oneself subsystem；
Described sedimentation tank by pipeline from its be centrifuged outfan be sequentially connected described centrifuge, collecting pit and No. two blowbacks to It is centrifuged input, and by the 3rd control device regulation and control, forms the recovery subsystem of aluminium hydroxide and alkali liquor；
Described pot mould liquid collecting tank is sequentially connected taking out of a described pump and described sedimentation tank by pipeline from its outfan Slag input, and by described sedimentation tank take out that slag outfan is back to alkaline three-in-one frosted groove take out slag input, and by the Four control device regulation and control, form pot mould liquid cycle subsystem.
Further illustrate, described first control device includes No. seven valves, No. eight valves, No. nine valves and No. ten valves, It is respectively arranged on described pipeline；What described No. seven valves were located at described alkaline three-in-one frosted groove takes out slag outfan and described Between a number pump；Described No. eight valves are located at the outfan of a described pump；Described No. nine valves are located at taking out of described sedimentation tank Slag input；Described No. ten valves be located at described sedimentation tank take out slag outfan and described alkaline three-in-one frosted groove to take out slag defeated Enter between end.
Further illustrate, described second control device includes aluminium hydroxide recovery control device and recycle of alkali liquor controls dress Put, be respectively arranged on described pipeline；Described aluminium hydroxide recovery control device include ride on Bus No. 11 valve, ten No. two valves, ten No. three valves and ten No. four valves；Described ride on Bus No. 11 valve, ten No. two valves and ten No. three valves are respectively arranged at described precipitation On different pipelines between the centrifugation outfan in pond and described centrifuge；Described ten No. four valves are arranged at described centrifuge and connect From the beginning on the pipeline at water source；
Described recycle of alkali liquor control device includes ten No. five valves and ten No. six valves；Described ten No. five valves are arranged at institute State between the outfan of collecting pit and described No. two pumps, described ten No. six valves are arranged at the centrifugation of described No. two pumps and sedimentation tank Input.
Further illustrate, described 3rd control device includes ten No. seven valves and ten No. eight valves, be respectively arranged at described On pipeline；Described ten No. seven valves are arranged between thin slag input and a described pump of described alkaline three-in-one frosted groove, Described ten No. eight valves are arranged between thin slag outfan and a described pump of described alkaline three-in-one frosted groove；
Described thin slag input is arranged at the upper surface of described alkaline three-in-one frosted groove, and described thin slag outfan is arranged at The bottom land of described alkaline three-in-one frosted groove.
Further illustrate, described 4th control device is ten No. nine valves；Described ten No. nine valves are arranged at described pot mould On pipeline between liquid collecting tank and a described pump.
A kind of aluminum alloy surface pre-treatment alkalescence three-in-one with pot mould liquid and aluminium hydroxide online recycling total system, including medicine Agent recovery system and two circulating water washing troughs；Described medicament recovery system includes described alkaline three-in-one frosted groove and non-mobile water Washing trough subsystem；Described non-mobile water washing trough subsystem is set with described alkaline three-in-one frosted groove differential concatenation by the first valve Put；
Described non-mobile water washing trough subsystem includes the first non-mobile water washing trough and the second non-mobile water washing trough, and described first The second valve differential concatenation setting is passed through in non-mobile water washing trough and described second non-mobile water washing trough, and described second non-mobile water Washing trough is additionally provided with water supplement port and the 3rd valve along the top of water flow direction；
Two described circulating water washing trough differential concatenation settings, and it is provided with water inlet along the top of water flow direction, terminal Outlet is connected to the water supplement port of described second non-mobile water washing trough.
Further illustrate, the bottom land of described alkaline three-in-one frosted groove is designed as 120 ° of wedge shape concave surface, described alkaline three The dreg-drawing pipe of unification frosted groove is disposed through described wedge shape concave surface lowest order.
Further illustrate, the tank liquor in described alkaline three-in-one frosted groove is alkaline tank liquor, the trip in described alkalescence tank liquor From alkali concn naoh and aluminium ion concentration al3+Ratio be 3.5-4.0.
Further illustrate, the tank liquor in described alkaline three-in-one frosted groove also contains sodium chloride, the concentration of described sodium chloride For 20-40g/l.
Beneficial effects of the present invention: (1) has a large amount of pot mould liquid to need objective reality to be processed for aluminum processing enterprise, passes through From alkali collection scheme, so that the alkali recovery equipment by oxidation line to process pot mould liquid further, thus efficient recovery pot mould Alkali liquor in liquid and aluminium hydroxide；And improve alkaline tank liquor, free alkali concentration is greatly improved, decomposable asymmetric choice net aluminium hydroxide in alkali liquor And online recycling, but aluminum dirt can not be formed, thoroughly prevent the drawbacks of aluminum dirt blocking pipeline, valve and pump；
(2) redesign slag pumping system, change alkaline etching groove to blow slag is to take out slag, keeps alkaline etching groove tank liquor clear, it is to avoid aluminium alloy Surface produces the defects such as spot corrosion；
(3) draw traditional alkaline etching pre-treatment and used fluorine-containing and ammonia nitrogen chemical drugss lessons, abandon the fluorine continued to use for many years Change hydrogen ammonium and nitric acid, redesign aluminium alloy anode oxide pre-treatment scheme, prevent the fluorine-containing, composition containing ammonium it is ensured that whole piece oxygen Change line pre-treatment free-floride no ammonium, realize aluminum fabrication plant fully reclaim, cycling use of water, wastewater zero discharge, reduce cost for wastewater treatment；
(4) drawn the lesson that traditional handicraft function trough is too many, technique is too complicated, medicine consumption is too high, by oil removing, alkaline etching, in Combine in a groove, three groove unifications with the function of three grooves, aluminium is processed using a drug slot, eliminates two work(of original alkaline etching technique Can groove, reagent consumption amount, by 60-80 kg/tonne of material of alkaline etching technique, is reduced to 20-30 kg/tonne of material, use less medicament 60% with On, reduce medicine consumption, water-saving, not channelling, improve effect；
(5) drawn the lesson that traditional alkaline etching technique rinsing bowl is too many, water consume is too high, by 6 washings of former alkaline etching technique Groove is reduced to 4, and two of which is washed for non-mobile water, and water consumption is reduced to 3-4 ton/ton material by 10.0-15.0 ton/ton material, section Water more than 60%；And the medicament recovery system being made up of with non-mobile water washing trough subsystem alkaline three-in-one frosted groove, pass through Differential concatenation, reverse flow, medicament, the medicament response rate 80% are reclaimed in non-mobile water washing trough subsystem cleaning aluminium, step by step retention More than, reduce the consumption of alkaline three-in-one frosted groove；
(6) partial crystallization pond and its stirring system are cancelled it is ensured that aluminum hydroxide grain is grown up, the quality that crystal grain is more than 45 microns is divided Number is more than 85%, meets the requirement of GB gb4294-2010；
In sum, it is achieved that aluminium hydroxide online recycling on the premise of guaranteeing few water, few medication, slagging tap less, become Waste be changed into values, reduces the huge waste of bauxite resource.
Brief description
Fig. 1 be one embodiment of the invention aluminum alloy surface pre-treatment alkalescence three-in-one with pot mould liquid and aluminium hydroxide exist Line reclaims the groove position layout drawing of total system；
Fig. 2 is pot mould liquid of one embodiment of the invention and the recovery system figure of aluminium hydroxide；
Fig. 3 is existing standard alkaline etching oxidation line groove position layout drawing；
Fig. 4 is that existing alkaline etching groove utilizes Bayer process to regenerate alkali liquor, reclaim the schematic diagram of aluminium hydroxide；
Wherein: alkaline three-in-one frosted groove 1, the first non-mobile water washing trough 2, the second non-mobile water washing trough 3, circulating water washing trough 4, sedimentation tank 5, centrifuge 6, collecting pit 7, a pump 8, No. two pumps 9, pipeline 10, mould liquid collecting tank 11 of stewing, the first valve 01, the Two valves 02, the 3rd valve 03, water supplement port 04, water inlet 05, outlet 06, No. seven valves 07, No. eight valves 08, No. nine valves 09, No. ten valves 010,011, ten No. two valves of ride on Bus No. 11 valve, 013, ten No. four valves of 012, ten No. three valves 014,15 Valve 015,016, ten No. seven valves of ten No. six valves, 018, ten No. nine valves 019 of 017, ten No. eight valves.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
A kind of pot mould liquid and the recovery system of aluminium hydroxide, are arranged at alkaline three-in-one frosted groove 1, comprising: pot mould liquid is received Collection tank 11, sedimentation tank 5, centrifuge 6,7, pump 8 of collecting pit, No. two pumps 9 and pipeline 10；
Described alkaline three-in-one frosted groove 1 is sequentially connected described No. one by pipeline 10 from the slag outfan of taking out of its dreg-drawing pipe Pump 8 and described sedimentation tank 5 take out slag input, and be back to it and taken out slag input by the slag outfan of taking out of described sedimentation tank 5, and lead to Cross first control device regulation and control, formed and take out slag cycle subsystem；
Described alkaline three-in-one frosted groove 1 is back to it by pipeline 10 from its thin slag outfan described pump 8 of connection and dredges Slag input, and being regulated and controled by second control device, is formed blocking and saves oneself subsystem；
Described sedimentation tank 5 is centrifuged outfan by pipeline 10 from it and is sequentially connected described centrifuge 6, collecting pit 7 and No. two Pump 9 is back to it and is centrifuged input, and by the 3rd control device regulation and control, forms the recovery subsystem of aluminium hydroxide and alkali liquor；
Described pot mould liquid collecting tank 11 is sequentially connected a described pump 8 and described sedimentation tank by pipeline 10 from its outfan 5 take out slag input, and by described sedimentation tank 5 take out that slag outfan is back to alkaline three-in-one frosted groove 1 take out slag input, and Regulated and controled by the 4th control device, form pot mould liquid cycle subsystem.
Pot mould liquid proposed by the present invention and the alkali liquid regeneration of Alkaline etchant and the recovery system of aluminium hydroxide, have primarily formed and have taken out Slag cycle subsystem, blocking save oneself subsystem, aluminium hydroxide and recycle of alkali liquor subsystem and pot mould liquid cycle subsystem；Described take out Slag cycle subsystem is made up of alkaline three-in-one frosted groove 1,5, pump 8 of sedimentation tank, first control device and pipeline 10；Described Block subsystem of saving oneself to be made up of alkaline three-in-one 1, pump 8 of frosted groove, the 3rd control device and pipeline 10；Described hydroxide Aluminum and recycle of alkali liquor subsystem by sedimentation tank 5, centrifuge 6,7, No. two pumps 9 of collecting pit, second control device and 10 groups of pipeline Become；Described pot mould liquid cycle subsystem by mould liquid collecting tank 11 of stewing, alkaline three-in-one frosted groove 1,5, pump 8 of sedimentation tank, the Four control devices and pipeline 10 form；Thus not only effectively described alkaline three-in-one frosted groove 1 is carried out taking out slag and can be with When to described pot mould liquid collecting tank 11 in pot mould liquid and described alkaline three-in-one frosted groove 1 in Alkaline etchant carry out alkali liquor and hydrogen The online recycling of aluminium oxide, reduces the huge waste of bauxite resource and free alkali concentration is greatly improved, and thoroughly prevents aluminum dirt blocking pipe The problem of road, valve and pump.
Further illustrate, described first control device includes No. seven valves 08, No. nine valves 09 of 07, No. eight valves and No. ten Valve 010, it is respectively arranged on described pipeline 10；
Described No. seven valves 07 are taken out between slag outfan and a described pump 8 positioned at described alkaline three-in-one frosted groove 1； Described No. eight valves 08 are located at the outfan of a described pump 8；The slag of taking out that described No. nine valves 09 are located at described sedimentation tank 5 inputs End；Described No. ten valves 010 be located at described sedimentation tank take out slag outfan and described alkaline three-in-one frosted groove 1 take out slag input Between end.By opening described No. seven valves 08, No. nine valves 09 of 07, No. eight valves and No. ten valves 010 successively, open simultaneously A number pump 8, thus the precipitate of described alkaline three-in-one frosted groove bottom land is evacuated to sedimentation tank by described pipeline 10, described In sedimentation tank 5, aluminium slag is deposited at the bottom of pond, and the clear liquid of sedimentation tank upper surface be then back to through described No. ten valves 010 described In the three-in-one frosted groove 1 of alkalescence, thus completing to take out slag circulation.
Further illustrate, described second control device includes aluminium hydroxide recovery control device and recycle of alkali liquor controls dress Put, be respectively arranged on described pipeline 10；Described aluminium hydroxide recovery control device includes 011, ten No. two valves of ride on Bus No. 11 valve 012, ten No. three valves 013 of door and ten No. four valves 014；Described 011, ten No. two valves 012 of ride on Bus No. 11 valve and ten No. three valves Door 013 is respectively arranged on the different pipelines 10 between the centrifugation outfan of described sedimentation tank 5 and described centrifuge 6；Described ten No. four valves 014 are arranged at described centrifuge and connect from the beginning on the pipeline 10 at water source；
Described recycle of alkali liquor control device includes ten No. five valves 015 and ten No. six valves 016；Described ten No. five valves Between 015 outfan being arranged at described collecting pit 7 and described No. two pumps 9, described ten No. six valves 016 are arranged at described No. two The centrifugation input of pump 9 and sedimentation tank 5.
With the described continuous operating taking out slag cycle subsystem, then in described sedimentation tank 5, the continuous accumulation of aluminium slag increases, hydrogen-oxygen The granule changing aluminum constantly becomes big；When enough aluminium hydroxide collected by described sedimentation tank 5, then open described ride on Bus No. 11 valve 011, Ten No. two valves 012 and ten No. three valves 013, make aluminium slag enter centrifuge 6, simultaneously open centrifuge 6 separate aluminium hydroxide and Alkali liquor；Open ten No. four valves 014 again, the alkali liquor in aluminium hydroxide is rinsed by water source from the beginning, when the outlet of centrifuge When rinse water is neutral, then stop rinsing, reclaim aluminium hydroxide；Finally open described ten No. five valves 015 and ten No. six valves 016, open No. two pumps 9 simultaneously, the recycle of alkali liquor extremely described sedimentation tank 5 that described collecting pit 7 is collected, reclaims alkali liquor；Thus it is complete Become the described aluminium hydroxide and recycle of alkali liquor subsystem online recycling to aluminium hydroxide and alkali liquor.
Further illustrate, described 3rd control device includes ten No. seven valves 017 and ten No. eight valves 018, is respectively provided with On described pipeline 10；Described ten No. seven valves 017 are arranged at the thin slag input of described alkaline three-in-one frosted groove 1 and described Between a number pump 8, described ten No. eight valves 018 are arranged at the thin slag outfan and described of described alkaline three-in-one frosted groove 1 Between number pump 8；
Described thin slag input is arranged at the upper surface of described alkaline three-in-one frosted groove 1, described thin slag outfan setting Bottom land in described alkaline three-in-one frosted groove 1.Because the precipitate of the bottom land when described alkaline three-in-one frosted groove 1 is excessive When, then can affect described in take out effective operating of slag cycle subsystem, therefore regulated and controled by described blocking subsystem of saving oneself, that is, Open described ten No. seven valves 017 and ten No. eight valves 018, open a pump 8, make tank liquor pass through described ten No. seven valves 017 From the thin slag input suction of described alkaline three-in-one frosted groove 1 upper surface, and by described ten No. eight valves 018 from described The thin slag outfan of three-in-one frosted groove 1 bottom land of alkalescence extrudes, thus extrusion is jammed in the precipitate in described pipeline 10, and Described blocking subsystem of saving oneself periodically is carried out recycled back operation it can be ensured that taking out the normal fortune of slag cycle subsystem described in taking out OK.
Further illustrate, described 4th control device is ten No. nine valves 019；Described ten No. nine valves 019 are arranged at institute State on the pipeline 10 between pot mould liquid collecting tank 11 and a described pump 8.By opening described ten No. nine valves 019, eight respectively Number 08, No. nine valves 09 of valve and No. ten valves 010, open a pump 8, thus can lead to the precipitate in pot mould liquid collecting tank Cross described pipeline 10 and be evacuated to sedimentation tank 5, and described sedimentation tank 5 upper surface clear liquid is back to described alkaline three through No. ten valves 010 Unification frosted groove 1, completes the recovery of mould liquid of stewing.
A kind of aluminum alloy surface pre-treatment alkalescence three-in-one with pot mould liquid and aluminium hydroxide online recycling total system, including medicine Agent recovery system and two circulating water washing troughs 4；Described medicament recovery system includes described alkaline three-in-one frosted groove 1 and does not flow Rinsing bowl subsystem；It is reverse with described alkaline three-in-one frosted groove 1 that described non-mobile water washing trough subsystem passes through the first valve 01 It is arranged in series；
Described non-mobile water washing trough subsystem includes the first non-mobile water washing trough 2 and the second non-mobile water washing trough 3, and described One non-mobile water washing trough 2 and described second non-mobile water washing trough 3 are passed through the second valve 02 differential concatenation and are arranged, and described second not Circulating water washing trough 3 is additionally provided with water supplement port 04 and the 3rd valve 03 along the top of water flow direction；
Two described circulating water washing trough 4 differential concatenation settings, and it is provided with water inlet 05, terminal along the top of water flow direction Outlet 06 be connected to the water supplement port 04 of described second non-mobile water washing trough.
Described aluminum alloy surface pre-treatment alkalescence is three-in-one and stews described in mould liquid and aluminium hydroxide online recycling total system The operation principle of medicament recovery system is: when alkaline three-in-one frosted groove 1 retains and reclaims medicament or supplement liquid level, opens described 3rd valve, makes the tap water in described non-mobile water washing trough enter described second non-mobile water washing trough by described water supplement port；Beat Open described second valve, then the trapped fluid in described second non-mobile water washing trough enters described first non-mobile water washing trough；Open Described first valve, the trapped fluid in described first non-mobile water washing trough enters described alkaline three-in-one frosted groove 1, thus realizing The effect that step retention is reclaimed medicament and supplemented described three-in-one frosted groove 1 liquid level.
Described alkaline three-in-one frosted groove is not only replaced alkali oil removing, alkaline etching and the neutralization three road works of traditional handicraft by the present invention It is achieved that three groove unifications, it has defat, removes natural oxide film, goes stricture of vagina, dusting, adjustment aluminium alloy background color, dedusting, simultaneously sequence Decompose the function of generating aluminium hydroxide；But also by described non-mobile water washing trough subsystem, with alkaline three-in-one frosted groove 1 shape Become medicament recovery system, be arranged in series by mutually opposing, thus having reached retention medicament, cleaning aluminium, having supplemented described alkali The effect of three-in-one frosted groove 1 liquid level of property；And by two described circulating water washing trough differential concatenation settings, described circulating water washing trough Water inlet can connect oxidation trough, then the water for cleaning after intaking as oxidation trough, thus the water inlet of described circulating water washing trough be acidity, Just neutralize the alkali liquor of aluminum alloy surface, effectively traditional alkaline etching pretreatment cleaning water is needed 3 water inlets and 3 outlets Become and only need 1 water inlet and 1 outlet.
Further illustrate, the bottom land of described alkaline three-in-one frosted groove 1 is designed as 120 ° of wedge shape concave surface, described alkaline three The dreg-drawing pipe of unification frosted groove 1 is disposed through described wedge shape concave surface lowest order.Described alkaline three-in-one frosted groove 1 is set to 120 ° of wedge shape concave surface, and described wedge shape concave surface is cooperated with dreg-drawing pipe, so that the precipitate in bottom land preferably converges Gather and be deposited on together, more fully precipitate is taken away by the turnover of described dreg-drawing pipe, it is to avoid accumulation excessively leads to block.
Further illustrate, the tank liquor in described alkaline three-in-one frosted groove 1 is alkaline tank liquor, the trip in described alkalescence tank liquor From alkali concn naoh and aluminium ion concentration al3+Ratio be 3.5-4.0.Free alkali concentration naoh (g/l) and aluminium ion concentration al3+ (g/l) ratio is interval for scale inhibition in 3.5-4.0, and the scale inhibition that can meet alkaline tank liquor requires, and makes the work ginseng of described alkalescence tank liquor Number runs in scale inhibition is interval it is ensured that non-scaling during the groove bit length phase large-scale production of alkaline three-in-one technique, will not be dirty because of aluminum Blocking pipeline, valve and pump and stop production, increase the service life, both can scale inhibition completely, can suitably reduce aluminum again and consume.
Further illustrate, the tank liquor in described alkaline three-in-one frosted groove 1 also contains sodium chloride, the concentration of described sodium chloride For 20-40g/l.Go the main component of stricture of vagina by adding sodium chloride in described tank liquor as dusting, and by sodium chloride concentration control System, in 20-40g/l, can meet the requirement producing frosted material, it is achieved thereby that described alkaline three-in-one frosted groove 1 also has dusting Go the function of stricture of vagina.
Working mechanism with regard to alkaline three-in-one frosted groove 1 is as follows:
(1) alkaline tank liquor: after aluminium is entered described alkaline three-in-one frosted groove 1, according to galvanic principles, with fine aluminium It is mutually anode, alloy phase is negative electrode, and cation, to alloy phase, anion to fine aluminium phase shift, is carried out by reaction equation (1) and (2) Chemical reaction:
(2) striping defat: understood according to reaction equation (1), after aluminium enters this groove, first remove natural oxide film, in high concentration of hydrogen Under sodium oxide effect, degreasing and fingerprint can be removed, save degreasing tank.
(3) stricture of vagina is removed in dusting: described alkaline three-in-one frosted groove 1 also has the function that stricture of vagina is removed in dusting, that is, pass through in described groove Add the main component that sodium chloride removes stricture of vagina as dusting in liquid.Understood according to reaction equation (2), fine aluminium is dissolved as anode, The chloride ion coming with being attracted by anode meets；Thus spot corrosion dusting, and sand grains is uniformly, aluminum consumption is low, goes mechanical line thorough；And Chloride is soluble in water, good cleaning, does not affect the quality of aluminium hydroxide to be recycled.According to following list of experiments, choose in tank liquor Sodium chloride concentration, takes free alkali 112.5g/l, al3+30g/l, r=free alkali concentration/aluminium ion concentration (naoh/al3+)= 3.75,60 DEG C, alkaline etching 12 minutes, result is as shown in table 1:
Dusting ability in tank liquor for the table 1 variable concentrations sodium chloride
nacl0g/l 10 20 30 40 50
The few sand of aluminium The few sand of aluminium The good sand of aluminium The good sand of aluminium The good sand of aluminium The good sand of aluminium
As shown in Table 1, sodium chloride concentration is controlled in 20-40g/l, the requirement producing frosted material can be met.
(4) decompose aluminium hydroxide, release sodium hydroxide: alkaline three-in-one frosted groove 1 without chelating agent, by reaction equation (3), when aluminium ion is increased to the patient upper limit of Alkaline etchant, sodium metaaluminate resolves into aluminium hydroxide and sodium hydroxide.
(5) thoroughly scale inhibition, the chemical reaction preventing reaction equation (4) occur: by (4) formula, alkali dirt is al2o3.3h2O, attachment The place touching in all tank liquors such as cell wall, pipeline, valve, pump, very firm, it is difficult to artificial removing.But aluminium oxide is two Property compound, be both dissolved in strong acid, also be soluble in highly basic, the aluminium oxide in bauxite, exactly with highly basic dissolving, therefore in described alkali Property tank liquor in properly increase the concentration of free alkali, be allowed to both can decompose aluminium hydroxide, the generation of alkali dirt can be stoped again.Foundation Following list of experiments, can scientifically choose free alkali concentration naoh (g/l) and aluminium ion concentration al in alkaline tank liquor3+(g/l) it The i.e. r value (naoh/al of ratio3+) scale inhibition scope, to avoid tank liquor fouling.Take different r values, 60 DEG C, alkaline etching 12 minutes, alkali repeatedly Erosion aluminium, result is as shown in table 2:
The scale prevention ability of the lower alkalescence tank liquor of the different r value of table 2
R=1.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5
Weight dirt Weight dirt Weight dirt Gently dirt Slightly dirt No dirt No dirt No dirt
As shown in Table 2, r value is controlled in 3.5-4.0, be that scale inhibition is interval, the scale inhibition that can meet alkaline tank liquor requires, therefore By r value (naoh/al3+) to measure, management and control alkalescence tank liquor scale prevention ability.
Additionally need supplementary notes, pot mould liquid in described pot mould liquid collecting tank 11 is also entered by the present invention by table 1,2 Row dusting and scale inhibition transformation, then step into the recovery subsystem of described aluminium hydroxide and alkali liquor, thus effectively realizing reclaiming pot The alkali liquor of mould liquid and aluminium hydroxide.
Working mechanism with regard to non-mobile water washing trough subsystem is as follows:
(1) clean aluminium: the scavenging period of described first non-mobile water washing trough 2 is 1.5 minutes；Described second non-mobile water The scavenging period of washing trough 3 is 1 minute；The medicament that thoroughly cleaning aluminium is taken out of；
(2) retain medicament: two non-mobile water washing troughs retain step by step.The medicine that described alkaline three-in-one frosted groove 1 is carried over Agent, its concentration becomes terraced distribution；The drug concentration of the first non-mobile water washing trough 2 is high, the drug concentration of the second non-mobile water washing trough 3 Low；
(3) reclaim medicament, supplement liquid level: in alkaline three-in-one frosted groove 1, the evaporation of moisture and the carry-over loss of medicament, Liquid level constantly declines, and requires supplementation with liquid level；Open the 3rd valve, tap water enters from the second non-mobile water washing trough 3, flows through first Non-mobile water washing trough 2, finally enters alkaline three-in-one frosted groove 1, had both supplemented liquid level, achieve the recovery step by step of medicament again.
The mode of production is as follows:
(1) mechanical spray sand material
Sandblasting aluminium is directly entered alkaline three-in-one frosted groove 1, r=3.75, reacts 5-10 minute, 50-60 DEG C, drip 1 Minute, then through the first non-mobile water washing trough 2 and the second non-mobile water washing trough 3, enter two described circulating water washing troughs 4 and clean；Complete Become oxidation pre-treatment.
(2) chemical sanding material
Aluminium is directly entered alkaline three-in-one frosted groove 1, reacts 10-15 minute, 50-60 DEG C, drip 1 minute, then through the One non-mobile water washing trough 2 and the second non-mobile water washing trough 3, enter two described circulating water washing troughs 4 and clean；Complete to aoxidize front place Reason.
The aluminum alloy surface pre-treatment three-in-one technique of alkalescence is that the recovery system of each groove and alkali liquid regeneration and aluminium hydroxide is close The result that cut distribution closes；The three-in-one frosted groove 1 of alkalescence, non-mobile water washing trough subsystem, and the alkali liquor of pot mould liquid and Alkaline etchant is again Raw and aluminium hydroxide recovery system is to embody the key of the technology of the present invention feature.
Embodiment 1 (sand facestock)
Aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl30g/l, reaction 10-15 divides Clock, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, the second non-mobile water is washed Groove 3 cleans 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, before completing oxidation Process.
Embodiment 2 (sandblasting material)
Aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl30g/l, react 5-10 minute, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, the second non-mobile water washing trough 3 Cleaning 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, complete to aoxidize front place Reason.
Shown by embodiment 1-2, the Alkaline etchant of the present invention can produce chemical sanding material and mechanical spray sand material.
Embodiment 3 (the dusting ability of nacl)
According to table 1, aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl 0g/l, reaction 5-10 minute, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, second does not flow Dynamic rinsing bowl 3 cleans 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, complete Oxidation pre-treatment.
Embodiment 4 (the dusting ability of nacl)
According to table 1, aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl10g/l, reaction 5-10 minute, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, second does not flow Dynamic rinsing bowl 3 cleans 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, complete Oxidation pre-treatment.
Embodiment 5 (the dusting ability of nacl)
According to table 1, aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl20g/l, reaction 5-10 minute, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, second does not flow Dynamic rinsing bowl 3 cleans 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, complete Oxidation pre-treatment.
Embodiment 6 (the dusting ability of nacl)
According to table 1, aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl40g/l, reaction 5-10 minute, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, second does not flow Dynamic rinsing bowl 3 cleans 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, complete Oxidation pre-treatment.
Embodiment 7 (the dusting ability of nacl)
According to table 1, aluminium is directly entered alkaline three-in-one frosted groove 1, r (naoh/al3+) 3.75, nacl50g/l, reaction 5-10 minute, 50-60 DEG C, drip 1 minute；Clean 1.5 minutes through the first non-mobile water washing trough 2, drip 1 minute, second does not flow Dynamic rinsing bowl 3 cleans 1 minute, drip 1 minute；Enter two circulating water washing troughs, be respectively washed 1 minute, 1 drip minute, complete Oxidation pre-treatment.
Shown by embodiment 3-7, according to table 1, when sodium chloride of the present invention is less than 15g/l, dusting effect is limited, more than 20g/ The chemical sand of uniform and smooth can be obtained during l.
Embodiment 8 (test of medicament recovery system)
As shown in Figure 1, open the 3rd valve 03, tap water enters the second non-mobile water washing trough 3；Open the second valve 02, The trapped fluid of the second non-mobile water washing trough 3 enters the first non-mobile water washing trough 2；Open the first valve 01, the first non-mobile water is washed The trapped fluid of groove 2 enters alkaline three-in-one frosted groove 1, completes medicament retention, reclaims and alkaline three-in-one frosted groove 1 replenisher Position.
Shown by embodiment 8, as shown in Figure 1, medicament recovery system of the present invention can retain alkaline three-in-one mill by step The medicament of sand launder 1, can mend from the second non-mobile water washing trough 3 to the first non-mobile water washing trough 2 to alkaline three-in-one frosted groove 1 successively Water, step reclaims medicament.
Embodiment 9 (taking out the test of slag cycle subsystem)
As shown in Figure 2, close valve 017,018,019, open valve 07,08,09,010, open a pump 8, by alkalescence The precipitate of three-in-one frosted groove bottom land is evacuated to sedimentation tank, and sedimentation tank upper surface clear liquid loops back this groove through valve 010, completes to take out Slag circulates.
Shown by embodiment 9, as shown in Figure 2, the present invention takes out slag cycle subsystem and can achieve that alkaline three-in-one frosted groove 1 is taken out Slag, sediment collected by sedimentation tank and clear liquid is back to alkaline three-in-one frosted groove 1.
Embodiment 10 (the recovery subsystem testing of aluminium hydroxide and alkali liquor)
As shown in Figure 2, open valve 011,012,013, sediment enters centrifuge.Open centrifuge, separate aluminium hydroxide And alkali liquor.Open valve 014, the alkali liquor in rinsing aluminium hydroxide, when the rinse water of centrifuge outlet is neutral, stop drift Wash, reclaim aluminium hydroxide.Open valve 015,016, open No. two pumps 9, the alkali liquor that collecting pit is collected is sent sedimentation tank back to, completed Recycle of alkali liquor.
Shown by embodiment 10, as shown in Figure 2, the recovery subsystem of aluminium hydroxide of the present invention and alkali liquor can efficiently separate hydrogen Aluminium oxide and alkali liquor, rinsing, recovery aluminium hydroxide；And alkali liquor can be sent back to sedimentation tank, complete recycle of alkali liquor.
Embodiment 11 (blocking save oneself subsystem testing)
As shown in Figure 2, close valve 07,08,019, open valve 017,018, open a pump 8, tank liquor is from alkalescence three Unification frosted groove 1 upper surface suction, extrudes from alkaline three-in-one frosted groove 1 bottom land dreg-drawing pipe, the precipitation of extrusion blocking dreg-drawing pipe Thing, completes pipe-dredging and saves oneself.
Shown by embodiment 11, as shown in Figure 2, present invention blocking subsystem of saving oneself can efficiently accomplish pipe-dredging and saves oneself.
Embodiment 12 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=2.0,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Embodiment 13 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=2.5,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Embodiment 14 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=3.0,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Embodiment 15 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=3.5,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Embodiment 16 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=4.0,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Embodiment 17 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=4.5,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Embodiment 18 (test of Alkaline etchant scale prevention ability)
According to table 2, take same r=5.0,60 DEG C, alkaline etching 12 minutes, repeats alkaline etching 100 times.
Shown by embodiment 12-18, according to table 2, when r value of the present invention is less than 3.0, easy fouling, during more than 3.5, can be complete Full scale inhibition, can longtime running.
Embodiment 19 (pot mould liquid scale inhibition and the transformation of dusting ability)
Extract pot mould liquid, detection free alkali and aluminium ion concentration, by table 1,2, sodium chloride concentration is added to 30g/l, r value Adjust to 3.75.
Shown by embodiment 19, by table 1,2, pot mould liquid can be carried out with dusting and scale inhibition transformation.
Embodiment 20 (pot mould liquid reclaims)
As shown in Figure 2, close valve 07,017,018, open valve 019,08,09,010, open a pump 8, will be by resistance Precipitate in dirt and dusting ability improved pot mould liquid collecting tank is evacuated to sedimentation tank, and sedimentation tank upper surface clear liquid is through valve 010 is recycled to described alkaline three-in-one frosted groove, completes mould liquid recovery of stewing.
Shown by embodiment 20, as shown in Figure 2, receivability pot mould liquid enters alkaline three-in-one frosted groove, realizes reclaiming pot mould Alkali liquor in liquid and aluminium hydroxide.
Describe the know-why of the present invention above in association with specific embodiment.These descriptions are intended merely to explain the present invention's Principle, and limiting the scope of the invention can not be construed to by any way.Based on explanation herein, the technology of this area Personnel do not need to pay other specific embodiments that performing creative labour can associate the present invention, and these modes fall within Within protection scope of the present invention.

Claims (9)

1. a kind of pot mould liquid and aluminium hydroxide recovery system, be arranged at alkaline three-in-one frosted groove it is characterised in that: include: Pot mould liquid collecting tank, sedimentation tank, centrifuge, collecting pit, a pump, No. two pumps and pipeline；
Described alkaline three-in-one frosted groove is sequentially connected a described pump and institute by pipeline from the slag outfan of taking out of its dreg-drawing pipe That states sedimentation tank takes out slag input, and is back to it and is taken out slag input by the slag outfan of taking out of described sedimentation tank, and controls by first Device regulation and control processed, form and take out slag cycle subsystem；
Described alkaline three-in-one frosted groove passes through pipeline and connects a described blowback to its thin slag input from its thin slag outfan, And regulated and controled by second control device, form blocking and save oneself subsystem；
Described sedimentation tank by pipeline from its be centrifuged outfan be sequentially connected described centrifuge, collecting pit and No. two blowbacks to its from Heart input, and by the 3rd control device regulation and control, form the recovery subsystem of aluminium hydroxide and alkali liquor；
Described pot mould liquid collecting tank by pipeline from its outfan be sequentially connected a described pump and described sedimentation tank to take out slag defeated Enter end, and by described sedimentation tank take out that slag outfan is back to alkaline three-in-one frosted groove take out slag input, and control by the 4th Device regulation and control processed, form pot mould liquid cycle subsystem.
2. according to claim 1 a kind of pot mould liquid and aluminium hydroxide recovery system it is characterised in that: described first control Device processed includes No. seven valves, No. eight valves, No. nine valves and No. ten valves, and it is respectively arranged on described pipeline；
Described No. seven valves are taken out between slag outfan and a described pump positioned at described alkaline three-in-one frosted groove；Described No. eight Valve is located at the outfan of a described pump；Described No. nine valves take out slag input positioned at described sedimentation tank；Described No. ten valves What door was located at described sedimentation tank takes out the taking out between slag input of slag outfan and described alkaline three-in-one frosted groove.
3. according to claim 1 a kind of pot mould liquid and aluminium hydroxide recovery system it is characterised in that: described second control Device processed includes aluminium hydroxide recovery control device and recycle of alkali liquor control device, is respectively arranged on described pipeline；
Described aluminium hydroxide recovery control device includes ride on Bus No. 11 valve, ten No. two valves, ten No. three valves and ten No. four valves； Described ride on Bus No. 11 valve, ten No. two valves and ten No. three valves be respectively arranged at described sedimentation tank centrifugation outfan and described from On different pipelines between scheming；Described ten No. four valves are arranged at described centrifuge and connect from the beginning on the pipeline at water source；
Described recycle of alkali liquor control device includes ten No. five valves and ten No. six valves；Described ten No. five valves are arranged at described receipts Between the outfan of Ji Chi and described No. two pumps, described ten No. six valves are arranged at the centrifugation input of described No. two pumps and sedimentation tank End.
4. according to claim 1 a kind of pot mould liquid and aluminium hydroxide recovery system it is characterised in that: described 3rd control Device processed includes ten No. seven valves and ten No. eight valves, is respectively arranged on described pipeline；
Described ten No. seven valves are arranged between thin slag input and a described pump of described alkaline three-in-one frosted groove, described Ten No. eight valves are arranged between thin slag outfan and a described pump of described alkaline three-in-one frosted groove；
Described thin slag input is arranged at the upper surface of described alkaline three-in-one frosted groove, and described thin slag outfan is arranged at described The bottom land of the three-in-one frosted groove of alkalescence.
5. according to claim 1 a kind of pot mould liquid and aluminium hydroxide recovery system it is characterised in that: described 4th control Device processed is ten No. nine valves；Described ten No. nine valves are arranged at the pipeline between described pot mould liquid collecting tank and a described pump On.
6. a kind of aluminum alloy surface pre-treatment alkalescence three using the recovery system as described in any one in Claims 1 to 5 Unification with pot mould liquid and aluminium hydroxide online recycling total system it is characterised in that: include medicament recovery system and two circulating waters Washing trough；
Described medicament recovery system includes described alkaline three-in-one frosted groove and non-mobile water washing trough subsystem；Described non-mobile water Washing trough subsystem passes through the first valve and described alkaline three-in-one frosted groove differential concatenation setting；
Described non-mobile water washing trough subsystem includes the first non-mobile water washing trough and the second non-mobile water washing trough, and described first does not flow The second valve differential concatenation setting is passed through in dynamic rinsing bowl and described second non-mobile water washing trough, and described second non-mobile water washing trough Top along water flow direction is additionally provided with water supplement port and the 3rd valve；
Two described circulating water washing trough differential concatenation settings, and it is provided with water inlet, the water outlet of terminal along the top of water flow direction Mouth is connected to the water supplement port of described second non-mobile water washing trough.
7. a kind of aluminum alloy surface pre-treatment alkalescence according to claim 6 is three-in-one online with pot mould liquid and aluminium hydroxide Reclaim total system it is characterised in that: the bottom land of described alkaline three-in-one frosted groove is designed as 120 ° of wedge shape concave surface, described alkalescence The dreg-drawing pipe of three-in-one frosted groove is disposed through described wedge shape concave surface lowest order.
8. a kind of aluminum alloy surface pre-treatment alkalescence according to claim 6 is three-in-one online with pot mould liquid and aluminium hydroxide Reclaim total system it is characterised in that: the tank liquor in described alkaline three-in-one frosted groove is alkaline tank liquor, in described alkalescence tank liquor Free alkali concentration naoh and aluminium ion concentration al3+Ratio be 3.5-4.0.
9. a kind of aluminum alloy surface pre-treatment alkalescence according to claim 6 is three-in-one online with pot mould liquid and aluminium hydroxide Reclaim total system it is characterised in that: the tank liquor in described alkaline three-in-one frosted groove also contains sodium chloride, described sodium chloride dense Spend for 20-40g/l.
CN201611004206.7A 2016-11-11 2016-11-11 Aluminium pre-treatment alkalinity is three-in-one and stews mould liquid and aluminium hydroxide online recycling system Active CN106367792B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611004206.7A CN106367792B (en) 2016-11-11 2016-11-11 Aluminium pre-treatment alkalinity is three-in-one and stews mould liquid and aluminium hydroxide online recycling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611004206.7A CN106367792B (en) 2016-11-11 2016-11-11 Aluminium pre-treatment alkalinity is three-in-one and stews mould liquid and aluminium hydroxide online recycling system

Publications (2)

Publication Number Publication Date
CN106367792A true CN106367792A (en) 2017-02-01
CN106367792B CN106367792B (en) 2018-10-02

Family

ID=57894475

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611004206.7A Active CN106367792B (en) 2016-11-11 2016-11-11 Aluminium pre-treatment alkalinity is three-in-one and stews mould liquid and aluminium hydroxide online recycling system

Country Status (1)

Country Link
CN (1) CN106367792B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107986308A (en) * 2017-12-29 2018-05-04 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of workshop system and technique for stewing mould liquid production aluminium hydroxide
CN108048843A (en) * 2018-01-22 2018-05-18 四会市宏创工业机械设备有限公司 Integration stews mould alkali liquor recovery device
CN108083305A (en) * 2017-12-29 2018-05-29 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of system and technique for stewing mould liquid recycling aluminium hydroxide
CN108083309A (en) * 2017-12-29 2018-05-29 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of workshop system for stewing mould liquid production ice crystal
CN112663062A (en) * 2020-12-11 2021-04-16 佛山市戴盟科技有限公司 Anodic oxidation production line-environmental protection type aluminium ion recovery unit

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417949A (en) * 1982-09-07 1983-11-29 Mcdonnell Douglas Corporation Enhanced aluminum etchant
JPH05295568A (en) * 1992-04-16 1993-11-09 Mitsubishi Heavy Ind Ltd Method for regenerating alkaline etchant of aluminum
JPH07268659A (en) * 1994-04-01 1995-10-17 Nippon Light Metal Co Ltd Waste liquid treatment in surface treatment of aluminum material
CN1121539A (en) * 1994-06-21 1996-05-01 日本轻金属株式会社 Aluminium soaking processing
KR20060127670A (en) * 2005-06-08 2006-12-13 장관섭 Etching solution of aluminum
DE102008062970A1 (en) * 2008-12-23 2010-07-01 König, Thomas Pickling process preparing aluminum components for anodizing, extracts pickling solution from pickling bath, separates solids, analyses permeate and adjusts it composition for recycling
CN101928948A (en) * 2010-09-02 2010-12-29 吉林麦达斯铝业有限公司 Recovery process of alkaline washing residual liquid for aluminum profile extrusion die
CN102021595A (en) * 2010-10-21 2011-04-20 佛山市三水雄鹰铝表面技术创新中心有限公司 Surface pre-treatment system combining four aluminum alloy working grooves into whole for full recovery of medicament and zero emission of wastewater
CN201901705U (en) * 2010-10-21 2011-07-20 佛山市三水雄鹰铝表面技术创新中心有限公司 Aluminum alloy surface pretreatment system capable of combining four working tanks into one, totally recycling medicament and realizing zero discharge of waste water
CN202220201U (en) * 2011-08-24 2012-05-16 曹健 On-line water circulating and purifying device used in surface treatment process of fluorine-free, ammonia-free and four-in-one aluminum profile
CN102925946A (en) * 2011-08-09 2013-02-13 佛山市鸿金源铝业制品有限公司 Aluminum material surface treatment method
CN103046099A (en) * 2013-01-07 2013-04-17 佛山泰铝新材料有限公司 Continuous anode photooxidation compound technology for aluminium strip
CN203320131U (en) * 2013-05-11 2013-12-04 深圳市和科达水处理设备有限公司 Alkali-washing residual liquid recycling device of aluminum profile extrusion die
CN103451436A (en) * 2013-09-02 2013-12-18 佛山市三水雄鹰铝表面技术创新中心有限公司 System for neutralizing treatment of demoulding waste liquor and anodic oxidation waste liquor and recovery of aluminum ions of aluminum processing plant
CN203781897U (en) * 2013-12-26 2014-08-20 佛山市三水雄鹰铝表面技术创新中心有限公司 System for neutralizing pot mould waste liquid and anodic oxidation waste liquid in aluminum processing plants and recovering aluminum ions
CN104988554A (en) * 2015-07-22 2015-10-21 上海英汇科技发展有限公司 High-low-temperature composite type anodic oxidation hole sealing method
CN105585179A (en) * 2016-03-08 2016-05-18 华南理工大学 Recycling method for mold release waste liquor of aluminum profile factory
CN105624760A (en) * 2016-03-28 2016-06-01 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluorine-free COD-free three-in-one zero-diopter pretreatment process for aluminum alloy
CN105648496A (en) * 2016-03-28 2016-06-08 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluoride-free ammonium-free four-in-one aluminum alloy sand face pretreatment process
CN105803506A (en) * 2016-03-28 2016-07-27 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluoride-free and ammonium-free four-in-one recovery system for pretreatment chemicals of sand surface of aluminum alloy
CN105821463A (en) * 2016-03-28 2016-08-03 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluoride-free and ammonium-free four-in-one sand finishing pretreatment agent and use method and agent recycling system thereof

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417949A (en) * 1982-09-07 1983-11-29 Mcdonnell Douglas Corporation Enhanced aluminum etchant
JPH05295568A (en) * 1992-04-16 1993-11-09 Mitsubishi Heavy Ind Ltd Method for regenerating alkaline etchant of aluminum
JPH07268659A (en) * 1994-04-01 1995-10-17 Nippon Light Metal Co Ltd Waste liquid treatment in surface treatment of aluminum material
CN1110583C (en) * 1994-04-01 2003-06-04 日本轻金属株式会社 Process for treating waste liquid in surface treatment of aluminum materials
CN1121539A (en) * 1994-06-21 1996-05-01 日本轻金属株式会社 Aluminium soaking processing
KR20060127670A (en) * 2005-06-08 2006-12-13 장관섭 Etching solution of aluminum
DE102008062970A1 (en) * 2008-12-23 2010-07-01 König, Thomas Pickling process preparing aluminum components for anodizing, extracts pickling solution from pickling bath, separates solids, analyses permeate and adjusts it composition for recycling
CN101928948A (en) * 2010-09-02 2010-12-29 吉林麦达斯铝业有限公司 Recovery process of alkaline washing residual liquid for aluminum profile extrusion die
CN102021595A (en) * 2010-10-21 2011-04-20 佛山市三水雄鹰铝表面技术创新中心有限公司 Surface pre-treatment system combining four aluminum alloy working grooves into whole for full recovery of medicament and zero emission of wastewater
CN201901705U (en) * 2010-10-21 2011-07-20 佛山市三水雄鹰铝表面技术创新中心有限公司 Aluminum alloy surface pretreatment system capable of combining four working tanks into one, totally recycling medicament and realizing zero discharge of waste water
CN102925946A (en) * 2011-08-09 2013-02-13 佛山市鸿金源铝业制品有限公司 Aluminum material surface treatment method
CN202220201U (en) * 2011-08-24 2012-05-16 曹健 On-line water circulating and purifying device used in surface treatment process of fluorine-free, ammonia-free and four-in-one aluminum profile
CN103046099A (en) * 2013-01-07 2013-04-17 佛山泰铝新材料有限公司 Continuous anode photooxidation compound technology for aluminium strip
CN203320131U (en) * 2013-05-11 2013-12-04 深圳市和科达水处理设备有限公司 Alkali-washing residual liquid recycling device of aluminum profile extrusion die
CN103451436A (en) * 2013-09-02 2013-12-18 佛山市三水雄鹰铝表面技术创新中心有限公司 System for neutralizing treatment of demoulding waste liquor and anodic oxidation waste liquor and recovery of aluminum ions of aluminum processing plant
CN203781897U (en) * 2013-12-26 2014-08-20 佛山市三水雄鹰铝表面技术创新中心有限公司 System for neutralizing pot mould waste liquid and anodic oxidation waste liquid in aluminum processing plants and recovering aluminum ions
CN104988554A (en) * 2015-07-22 2015-10-21 上海英汇科技发展有限公司 High-low-temperature composite type anodic oxidation hole sealing method
CN105585179A (en) * 2016-03-08 2016-05-18 华南理工大学 Recycling method for mold release waste liquor of aluminum profile factory
CN105624760A (en) * 2016-03-28 2016-06-01 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluorine-free COD-free three-in-one zero-diopter pretreatment process for aluminum alloy
CN105648496A (en) * 2016-03-28 2016-06-08 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluoride-free ammonium-free four-in-one aluminum alloy sand face pretreatment process
CN105803506A (en) * 2016-03-28 2016-07-27 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluoride-free and ammonium-free four-in-one recovery system for pretreatment chemicals of sand surface of aluminum alloy
CN105821463A (en) * 2016-03-28 2016-08-03 佛山市三水雄鹰铝表面技术创新中心有限公司 Fluoride-free and ammonium-free four-in-one sand finishing pretreatment agent and use method and agent recycling system thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107986308A (en) * 2017-12-29 2018-05-04 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of workshop system and technique for stewing mould liquid production aluminium hydroxide
CN108083305A (en) * 2017-12-29 2018-05-29 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of system and technique for stewing mould liquid recycling aluminium hydroxide
CN108083309A (en) * 2017-12-29 2018-05-29 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of workshop system for stewing mould liquid production ice crystal
CN107986308B (en) * 2017-12-29 2019-10-01 佛山市三水雄鹰铝表面技术创新中心有限公司 A kind of workshop system and technique stewing mould liquid production aluminium hydroxide
CN108083309B (en) * 2017-12-29 2020-01-14 佛山市三水雄鹰铝表面技术创新中心有限公司 Workshop system for producing cryolite by using mold liquid
CN108083305B (en) * 2017-12-29 2020-01-14 佛山市三水雄鹰铝表面技术创新中心有限公司 System and process for recovering aluminum hydroxide from mold-stewing liquid
CN108048843A (en) * 2018-01-22 2018-05-18 四会市宏创工业机械设备有限公司 Integration stews mould alkali liquor recovery device
CN112663062A (en) * 2020-12-11 2021-04-16 佛山市戴盟科技有限公司 Anodic oxidation production line-environmental protection type aluminium ion recovery unit
CN112663062B (en) * 2020-12-11 2024-03-19 佛山市戴盟科技有限公司 Anodic oxidation production line-environment-friendly aluminum ion recovery device

Also Published As

Publication number Publication date
CN106367792B (en) 2018-10-02

Similar Documents

Publication Publication Date Title
CN106367792B (en) Aluminium pre-treatment alkalinity is three-in-one and stews mould liquid and aluminium hydroxide online recycling system
CN102021595B (en) Surface pre-treatment system combining four aluminum alloy working grooves into whole for full recovery of medicament and zero emission of wastewater
CN103952741B (en) Aluminium alloy anode oxide line treatment process
CN201901705U (en) Aluminum alloy surface pretreatment system capable of combining four working tanks into one, totally recycling medicament and realizing zero discharge of waste water
CN105648496B (en) Aluminium alloy free-floride is without handling process in face of ammonium four-in-one sand
CN105803506B (en) Aluminium alloy free-floride is without treatment agent recovery system in face of ammonium four-in-one sand
CN106757268B (en) The alkaline three-in-one and alkali liquid regeneration of aluminium pre-treatment and aluminium hydroxide online recycling technique
CN103213961B (en) Closed cyclic utilization method for production water of monoammonium phosphate
CN105624760B (en) Aluminium alloy free-floride is without the three-in-one zero diopter pre-treating technologies of COD
CN106367791B (en) Aluminium pre-treatment and aluminium hydroxide online recycling and the three-in-one frosting technology of alkalinity
CN105821463B (en) Free-floride is without treatment agent and its use in face of ammonium four-in-one sand
CN202021177U (en) Multi-stage circulation cleaning equipment for solar silicon wafer
CN109112537B (en) Device and process for recovering aluminum hydroxide and sodium sulfate from oxidation liquid and deoiling neutralization liquid
CN105839108A (en) Aluminum alloy fluorine-free and COD-free three-in-one plain glass pretreatment drug recovery system
CN109112597B (en) Configuration and method for reforming oxidation line to recover oxidation liquid and protect mono-nickel salt coloring tank
CN105839162A (en) Aluminum alloy oxidation line sealing groove and the oxidation tank medicament compatible water saving system
CN105821412A (en) Fluoride-free and COD-free three-in-one flatting trough agent and using and recycling system thereof
CN206219345U (en) A kind of processing system for improving Texaco gasifier buck water quality
CN209721803U (en) Cyclohexanone is saponified salkali waste and removes hard device for coal water slurry gasification buck
CN208717127U (en) A kind of pickling sludge resource processing apparatus
CN109133131B (en) System and method for neutralizing and recovering aluminum hydroxide and sodium sulfate from oxidation liquid and mold-cooking liquid
CN206886866U (en) A kind of laundry water circulating and recovering wash mill
CN108179421A (en) A kind of mould liquid that stews replaces Alkaline etchant and recycles the system and technique of ice crystal
CN212548431U (en) Device for replacing slurry thickening tank
CN108130577A (en) A kind of oxidized aluminum alloy liquid recycles configuration system compatible with coloring slot and technique

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant