CN203291434U - Harmless processing system for electrolytic aluminium overhaul slag - Google Patents
Harmless processing system for electrolytic aluminium overhaul slag Download PDFInfo
- Publication number
- CN203291434U CN203291434U CN2013203074614U CN201320307461U CN203291434U CN 203291434 U CN203291434 U CN 203291434U CN 2013203074614 U CN2013203074614 U CN 2013203074614U CN 201320307461 U CN201320307461 U CN 201320307461U CN 203291434 U CN203291434 U CN 203291434U
- Authority
- CN
- China
- Prior art keywords
- bin
- reaction warehouse
- metering
- electrolytic aluminium
- reaction
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a harmless processing system for electrolytic aluminium overhaul slag. The harmless processing system comprises a feed hopper, a metering storage bin, a ball grinder, a metering powder bin, a reaction bin, a press filter and a water reservoir, wherein the feed hopper is connected to the metering storage bin through a first hoister; the outlet of the metering storage bin is connected to the ball grinder; the ball grinder is connected to the metering powder bin through a second hoister; the metering powder bin is connected to the reaction bin through a screw conveyor; the reaction bin is further connected to a reactant bin A and a reactant bin B, which are connected to the reaction bin through the screw conveyor; an acid adjusting tank is further arranged on the reaction bin; a discharge opening of the reaction bin is connected to the press filter through a pipeline; the reaction bin comprises a carbon steel bin body; an anti-corrosion coating of the reaction bin is arranged on the inner wall of the carbon steel bin body. According to the harmless processing system, the reaction bin and the acid adjusting tank can resist repeated impact of strong acid and alkali as well as strong oxidizer, the price can be greatly reduced compared with that of a stainless steel material, and process requirements can be met structurally.
Description
Technical field
The utility model belongs to electrolytic aluminium overhaul slag process field, relates in particular to a kind of whole system of harmless treatment electrolytic aluminium overhaul slag.
Background technology
Electrolytic cell is the crucial production equipment of aluminum electrolysis industry, and the electrolytic aluminium in worldwide is to produce all to adopt electrolytic tank electrolysis explained hereafter electrolytic aluminium.And electrolytic aluminium overhaul slag is the waste residue that electrolytic cell dismantles, and is called for short the overhaul slag, and is because it is rich in hypertoxic cyanide and fluoride, soluble in water, is easy to underground water source is caused to irreversible pollution, thereby jeopardizes the mankind's existence and life.
China is the producing country of electrolytic aluminium maximum, according to 2011 the end of the year output just surpassed 2,000 ten thousand tons, the overhaul slag of calculating according to investigations factory every year of 200,000 tons of electrolytic aluminiums can reach the cumulant of 6000 tons, only the overhaul slag quantity of factory's production accumulation in 20 years is exactly 120,000 tons, need to occupy a large amount of soils and carry out accumulation deposit.Environmental administration is still to select the local landfill method of doing after antiseepage is processed for the processing method of overhaul slag at present.In case impervious barrier is impaired, the cyanide in the overhaul slag and fluoride will cause great environmental hazard and impact to human life and existence.
in the overhaul slag, main component is some refractory materials and impermeable filler and carbon materials, because in production process, needing to add electrolyte (fluoride, it is mainly aluminum fluoride, sodium fluoride, the about 26-32KG/ ton of ice crystal consumption aluminium) in the overhaul slag, immerse a lot of fluorides and cyanide (leachable of graphite electrode) during high temperature production in addition, (the detection data that draw during according to my actual harmless treatment over several years: in undressed overhaul slag leachate, fluoride concentration is between the 1000-10000mg/ liter, mean value is the content 5-230mg/ liter of 3000-4000mg/L. cyanide, in the overhaul slag, owing to containing hypertoxic cyanide and fluoride, usually become a kind of reluctant high-risk discarded object, these product belong to hypertoxic type, the human oral lethal dose is about 1 ~ 2mg/kg.Its toxicity is to discharge in vivo cyano group (CN), with the Fe3+ of oxidized form cytochrome oxidase, to be combined, to make cytochromes lose the transmission electronic capability, respiratory chain is interrupted.Occurring in cell suffocates causes histanoxia and causes poisoning.Poisoning approach can be by breathing, eat by mistake and contact skin.Because the toxicity of cyanide is very large, so should be controlled at below 0.5mg/L. the cyanide discharge standard in a class discharging industrial wastewater.Behind excessive fluoride pollution water source, can form fluorosis of bone, Itai-itai diseases, and irreversible and healing, make the adult bone frangibility.Medium poison, median lethal dose (rat, per os) 0.18g/kg.Strong and stimulating is arranged.Country is below 10mg/ rises to the concentration standard of discharge of wastewater.
Through inquiring about the domestic overhaul slag harmlessness treatment technology that the industrial scale application not yet occurs; application number 200810231562.1 " harmless treatment of cyanide and fluoride and recovery process in solid slag " has been discussed the innoxious principle and the material mixture ratio that can use, process sequence of overhaul slag normal temperature wet method.
External pyrogenic process overhaul slag harmlessness technique, CA2084710A1, OTTAWA, Canada. (date of publication 19930725) announced a kind of butanedionedioxime method of overhaul slag, the overhaul slag is placed in the secondary cycle fluid bed, adds and mix calcium sulfate, magnesium sulfate, pass into 6-10% oxygen high-temp combustion and decompose cyanide, innoxious temperature is at 650-900 ℃.Make fluoride and calcium sulfate generate the innoxious scheme of calcirm-fluoride.But this technique relates to secondary pollution, and higher to equipment and materials and sealing requirements, and test wire cost and the operating cost of domestic introduction are also higher.Be difficult to promote the use of.
The overhaul slag while being the aluminum electrolysis industry electrolytic cell overhaul, dismantle disassemble thing, this disassemble the owner will be by the useless brick of refractory brick not of uniform size, insulation material, inserts, part graphite slot liner forms.In the overhaul slag, owing to containing a large amount of cyanides and fluoride, by national environmental protection supervision department, listed in dangerous solid waste.And cyanide and fluoride are soluble in water, arbitrarily abandon overhaul slag slurry and make cyanide and fluoride along with contaminated soil is leached in the immersion of rainwater, and underground water, and then jeopardize human health and life.
In the process of wet method harmless treatment overhaul slag, pH value 12 left and right of the water-leach liquor of overhaul slag, cyanide almost can with any metal reaction, belong to strong basicity, bleaching powder in innoxious process is also the material that a kind of corrosivity is very strong in water, in addition, hydrochloric acid used belongs to strong acid, general carbon steel is difficult to stand for a long time the conversion impact of soda acid, general solution is to adopt stainless steel SUS316L material to make the reaction warehouse, but the immersion of hydrochloric acid still causes very large injury to body of stainless steel.And its cost can be in any more more, make the environmental protection of just only having input there is no output originally drop into pressure heavy, how a kind of reaction warehouse and the acid-regulating tank material that can either resist strong acid-base and strong oxidizer repeated stock can be arranged, can make again price compare stainless steel significantly descends, on structure, can meet the reaction warehouse of butanedionedioxime requirement, become the key that the overhaul slag harmlessness is processed success or failure.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency a kind of electrolytic aluminium overhaul slag harmlessness treatment system is provided, reaction warehouse of the present utility model and acid-regulating tank can either be resisted strong acid-base and strong oxidizer repeated stock, can make again price compare stainless steel and significantly descend, on structure, can also meet the requirement of butanedionedioxime.
For achieving the above object, the utility model is by the following technical solutions:
a kind of electrolytic aluminium overhaul slag harmlessness treatment system, comprise feed hopper, the metering feed bin, ball mill, metering powder storehouse, reaction warehouse, filter press and cistern form, feed hopper is connected with the metering feed bin by the first elevator, the metering bin outlet is connected with ball mill, ball mill is connected with metering powder storehouse by the second elevator, metering powder storehouse is connected with reaction warehouse by conveying worm, on reaction warehouse, also be connected with A agent bin and B agent bin, A agent bin and B agent bin all are communicated with reaction warehouse by conveying worm, on reaction warehouse, also be provided with acid-regulating tank, also be provided with cistern, cistern is communicated with reaction warehouse and acid-regulating tank respectively by water inlet pipe, the reaction warehouse discharge gate is connected with filter press by pipeline, described reaction warehouse comprises the carbon steel warehouse, on carbon steel warehouse inwall, be provided with the reaction warehouse corrosion-inhibiting coating.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, described reaction warehouse corrosion-inhibiting coating is glass fabric coating or ultra-high molecular weight polyethylene coating.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, on described reaction warehouse, also be provided with the circulation bypass, in the circulation bypass, be provided with circulating pump and sample tap, the circulation bypass is communicated with water inlet pipe by pipeline, on the pipeline between water inlet pipe and circulation bypass, is provided with check valve.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, described acid-regulating tank comprises the carbon steel tank body, in the carbon steel tank body, is provided with the acid-regulating tank corrosion-inhibiting coating.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, described acid-regulating tank corrosion-inhibiting coating is glass fabric coating or ultra-high molecular weight polyethylene coating.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, on feed hopper top, feed hopper and the first elevator junction, ball mill and the second elevator junction and the second elevator be provided with dust excluding hood with metering feed bin junction, all dust excluding hoods are connected with deduster.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, the reaction warehouse discharge gate is communicated with the waste residue Buffer Pool by pipeline, the waste residue Buffer Pool is connected with filter press by slag-transporting pipe, and the liquid outlet of filter press is communicated with lautertuns by pipeline, and the delivery port of lautertuns is communicated with cistern.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, bottom, described metering powder storehouse is provided with the sampler with valve.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, in ball mill is located at soundproof room.
Above-mentioned electrolytic aluminium overhaul slag harmlessness treatment system, described metering feed bin, metering powder storehouse, A agent bin and B agent bin are provided with weight sensor, weight sensor is electrically connected to control system, ball mill, spiral send the upper magnetic valve of machine, reaction warehouse, filter press all with control system, to be electrically connected to, and by control system, are controlled the switching of each magnetic valve.
Adopt technique scheme, the utility model has following advantage: reaction warehouse of the present utility model and acid-regulating tank can either be resisted strong acid-base and strong oxidizer repeated stock, can make again price compare stainless steel and significantly descend, on structure, can also meet the requirement of butanedionedioxime.And the convenient sampling of the design of circulation bypass.
the utility model uses control system to carry out program control or manual two Interface Control to overhaul slag harmlessness process, to ball mill, elevator, meter heavy burder storehouse, the heavy powder of meter storehouse, conveying worm, reaction warehouse, the A agent bin, the B agent bin, the batching link is accurately controlled, through the sampler sampling in bottom, the heavy powder storehouse of meter, preliminary examination, the data that preliminary examination draws by the control system read rear automatically and in control system the formula in initialized data base automatically contrast, automatically calculate the addition that removes the cyanogen agent in the A agent bin, automatic gauge, reaction warehouse adds water in advance, from counting heavy powder storehouse, overhaul ground-slag material is transported to reaction warehouse again, hybrid reaction is except cyanogen, cyanogen is surveyed in reaction warehouse outer circulation bypass sampling, the metering defluorinating agent is reinforced, acid adding, the hybrid reaction defluorination, cyanogen is surveyed in reaction warehouse outer circulation bypass sampling, it is qualified to detect, start the slag stock pump discharging of reaction warehouse discharge gate, to process rear slurry and pump into the waste residue Buffer Pool, through the waste residue Buffer Pool, pump into again the filter press Separation of Solid and Liquid, the water that filters out flows to cistern by back of pipeline and reuses after the lautertuns filtration of below, finally make the overhaul slag harmlessness, omnidistance without discharge water.Due on feed hopper top, feed hopper and the first elevator junction, ball mill and the second elevator junction and the second elevator be provided with dust excluding hood with metering feed bin junction, all dust excluding hoods are connected with deduster.Make whole fragmentation, deironing, storage, ball milling, the storage metering, the batching course of conveying carries out in the loop of depression dust-removing.Ball mill is located in soundproof room, soundproof room refers to that the acoustical foam board that is sticked on the ball mill outer wall forms the soundproof room of a sealing, for sealing noise reduction, whole innoxious course of reaction all completes in the normal temperature liquid phase, any one flow process of whole production line again can be as required, the independent employing manually controlled, airtight forklift operation is adopted in the reinforced production scene of feed hopper except feed hopper when the charging, almost can't see the operating personnel, operating personnel carry out operation in computer OPS by video monitoring and instrument.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model reaction warehouse.
The specific embodiment
a kind of electrolytic aluminium overhaul slag harmlessness treatment system as depicted in figs. 1 and 2, comprise feed hopper 1, metering feed bin 2, ball mill 3, reaction warehouse 4, filter press 5 and cistern 6 form, feed hopper 1 is delivered in broken tramp iron separator 41 the overhaul slag broken, deironing, pass through again the first elevator 7 by fragmentation, overhaul slag after deironing is delivered to metering feed bin 2, the metering bin outlet is connected with ball mill 3, overhaul ground-slag material after ball mill 3 will grind by the second elevator 8 is delivered to metering powder storehouse 9, metering bottom, powder storehouse is provided with the sampler 42 with valve, while facilitating preliminary examination, take a sample, metering powder storehouse 9 is delivered to overhaul ground-slag material in reaction warehouse 4 by conveying worm 36, on reaction warehouse 4, also be connected with A agent bin 10 and B agent bin 11, on A agent bin 10 and B agent bin 11, be provided with exhaust outlet, A agent bin and B agent bin all are communicated with reaction warehouse by conveying worm.On feed hopper 1 top, feed hopper and the first elevator junction, ball mill and the second elevator junction and the second elevator be provided with dust excluding hood 45 with metering feed bin junction, all dust excluding hoods 45 are connected with deduster 12, position at these airborne dusts arranges the dust excluding hood that is connected with deduster, can dedusting.Outside ball mill 3, be provided with soundproof room, soundproof room is to consist of the closed cavity that the sound-absorbing foam sound panel 12 that is sticked on the ball mill outer wall surrounds, be used to sealing noise-reducing, to reduce NOISE ON ENVIRONMENT and staff's impact.On reaction warehouse 4, also be provided with acid-regulating tank 13, the water inlet pipe 29 that connects cistern 6 is communicated with acid-regulating tank and reaction warehouse respectively, and acid-regulating tank 13 comprises carbon steel tank body 14, in carbon steel tank body 14, is provided with acid-regulating tank corrosion-inhibiting coating 15.Acid-regulating tank corrosion-inhibiting coating 15 is glass fabric coating or ultra-high molecular weight polyethylene coating.Reaction warehouse 4 discharge gates are connected with filter press 5 by pipeline, and described reaction warehouse comprises carbon steel warehouse 16, on carbon steel warehouse 16 inwalls, are provided with reaction warehouse corrosion-inhibiting coating 17.Reaction warehouse corrosion-inhibiting coating 17 is glass fabric coating or ultra-high molecular weight polyethylene coating.Corrosion-inhibiting coating acid-proof alkali prevention effect in blend tank and reaction warehouse is better than stainless steel.On described reaction warehouse 4, also be provided with circulation bypass 18, in circulation bypass 18, be provided with circulating pump 19 and sample tap 43, convenient sampling.the circulation bypass also is communicated with water inlet pipe 29 by pipeline, on the pipeline between circulation bypass and water inlet pipe, also be provided with check valve 20, for controlling the water inlet in reaction warehouse, reaction warehouse 4 discharge gates are communicated with waste residue Buffer Pool 21 by pipeline, on the pipeline of reaction warehouse discharge gate, be provided with slag stock pump 44, slag stock pump 44 pumps into the waste residue Buffer Pool by the slurries in reaction warehouse, waste residue Buffer Pool 21 is connected with filter press 5 by slag-transporting pipe, the liquid outlet of filter press 5 is communicated with lautertuns 22 by pipeline, the delivery port of lautertuns 22 is communicated with cistern, like this, slag slurry in the waste residue Buffer Pool is squeezed into filter press 5 and is filtered, the water of separating imports after lautertuns 22 filters to be back in cistern 6 by pipeline and reuses, Filter Press dried mud is out fallen in the dump truck of waiting for the filter press below and is transported.
The utility model can also be provided with weight sensor 40 on metering feed bin, metering powder storehouse, A agent bin and B agent bin, also be provided with control system, weight sensor is electrically connected to control system, ball mill, spiral send the upper magnetic valve of machine, reaction warehouse, filter press all with control system, to be electrically connected to, and by control system, are controlled the switching of each magnetic valve.
Filter press of the present utility model adopts chamber filter press.Deduster adopts sack cleaner.Reaction warehouse comprises warehouse and Hatch Board 23, warehouse comprises the carbon steel warehouse, in the sticky rotten coating of setting up defences of carbon steel warehouse inwall, shaft 24 is set in warehouse, blade 25 is established in the shaft bottom, the shaft 24 that reaches the warehouse outside is connected with reductor 25, and reductor is driven by motor 26, on Hatch Board 23, is provided with warehouse exhaust outlet 26.On acid-regulating tank 13, be provided with sour tank exhaust outlet 27 and acid mist averager 28, acid-regulating tank is connected with cistern 6 by water inlet pipe 29, on water inlet pipe, be provided with water pump 30 and flowmeter, acid-regulating tank 13 is connected with acid storage tank 32 by acid delivering pipeline 31, on acid delivering pipeline, be provided with sour pump 33, check valve and gauge table, acid delivering pipeline is the macromolecular antiseptic pipeline.
The course of work of the present utility model is as follows: a kind of manual electrolytic aluminium overhaul slag harmlessness treatment system, not be used on metering feed bin, metering powder storehouse, A agent bin and B agent bin weight sensor is set, also control system need not be set, ball mill, spiral send the upper magnetic valve of machine, reaction warehouse, filter press all with motor separately, to be connected, by the switching of each self-corresponding Electric Machine Control magnetic valve.With manually by the 3rd elevator 34 and the 4th elevator 35, to the A agent bin, adding except the cyanogen agent respectively, to the B agent bin, add defluorinating agent stand-by in advance.A, B agent bin bottom also are equipped with conveying worm 36 at the conical outlet place.after reinforced, close the later equipment in metering powder storehouse, with the forklift of airtight driving cabin, overhaul clinker material is sent into to feed hopper, through vibrating feeder, overhaul clinker material is sent into to disintegrating machine, be crushed to the pellet of 30 millimeter, after the belt conveyor deironing of tramp iron separator, send into the first elevator, the first elevator enters the metering feed bin, the metering feed bin passes through the lower taper mouth to the ball mill feed, the cohesive position top arranges dust excluding hood, dust is taken in deduster, pellet is after the powder that the ball mill ball milling becomes 200 order left and right, through the ball mill discharging mouth, overflow and enter the second elevator, powder is promoted and enters metering powder storehouse, press the switch of the Powder sample of installing metering bulkhead bottom, powder storehouse, get this batch powder sample 200 grams, send into laboratory, according to standard, incite somebody to action wherein 100 gram overhaul ground-slag samples and add pure water or distilled water to one liter, 600 rev/mins of rotating speeds stirred 15 minutes, sampling liquid is in a moment centrifugal on centrifuge, by clear liquid as for the detector charging aperture, the quantitative stoste of start detection instrument Automatic Extraction enters in agitator tank, this instrument can be according to the standard of national quality supervision department formulation, automatically add buffer solution, after stirred for several minute, provide simultaneously the concentration of cyanide in this sample liquid, the size of fluoride concentration and pH value, after three numerical stabilities, according to these data, carry out proportioning, calculate except the cyanogen agent, the consumption of defluorinating agent and hydrochloric acid, when preliminary examination is taken a sample in the heavy powder of meter storehouse, start the water filling program, starting mode of pump according to amount of calculation 70% from cistern, drawing water, in advance to the reaction warehouse water filling, stand-by to the water that injects amount of calculation in acid-regulating tank, after finishing, water filling starts the reaction warehouse agitator, under stirring, start to start the conveying worm discharging of metering bottom, powder storehouse, another conveying worm startup of discharging opening docking adds overhaul ground-slag material in reaction warehouse water, until the overhaul slag after in water, stirring, the conveying worm that drives the A agent bin to add in reaction warehouse amount of calculation except the cyanogen agent, according to setting rotating conversion time and speed of agitator stirring reaction, start simultaneously the circulating pump on reaction warehouse outer loop bypass duct, complete the stirring reaction of setting after the time, 500 milliliters of sample tap sampling liquid in the bypass of reaction warehouse outer loop, send sample liquid to laboratory, with artificial colorimetric cylinder or detector, measure the concentration of cyanide value, record concentration of cyanide qualified less than 0.5mg/L after, the conveying worm that starts the B agent bin is to the defluorinating agent that adds amount of calculation in reaction warehouse, start simultaneously sour pump to the hydrochloric acid that injects amount of calculation in the water in acid-regulating tank, then the hydrochloric acid solution after diluting imports in reaction warehouse by the valve of acid-regulating tank bottom, stirring reaction is after setting-up time, from 500 milliliters of the sampling of the sample tap in the bypass of reaction warehouse outer loop liquid, send into laboratory inspection fluorinion concentration and pH value, when data less than 10mg/L, pH value is greatly when 6-7, start the slag stock pump of discharge gate, slurries in reaction warehouse are squeezed in Buffer Pool, start agitator, start filter press, slurry in Buffer Pool is squeezed into to Filter Press, the water of separating imports after lautertuns filters to be back in cistern and reuses, Filter Press dried pug is out fallen in the dump truck wagon box of waiting for the filter press below and is transported.The conveying worm of metering feed bin and metering bottom, powder storehouse blocking not while having guaranteed discharging in the utility model, airborne dust, accurately reinforced.In the utility model except the cyanogen agent can be clorox or the calcium hypochlorite in hypochlorite, can be also hydrogen peroxide.The preferred calcium hypochlorite of the utility model.Defluorinating agent in the utility model can be the calcium salts such as calcium chloride, calcium oxide, calcium hydroxide, calcium carbonate, the utility model preferably calcium hydroxide.Acid in the utility model is hydrochloric acid.The utility model is based on overhaul slag harmlessness industrial applications scheme under the normal temperature liquid-phase condition, compared to external pyrogenic process butanedionedioxime, without consuming additional energy source, do not produce secondary pollution sulfur dioxide, operation cost is low, by split run, process 2000 ton/years of three industrialization checkings and 500 ton/years of industrialization checkings of three split runs processing, project all obtains the environmental impact assessment in the environmental protection Room, Henan Province and checks and accepts.
The course of work of the present utility model is as follows: a kind of program control electrolytic aluminium overhaul slag harmlessness treatment system, on metering feed bin, metering powder storehouse, A agent bin and B agent bin, be provided with weight sensor 40, also be provided with control system, weight sensor is electrically connected to control system, ball mill, spiral send the upper magnetic valve of machine, reaction warehouse, filter press all with control system, to be electrically connected to, and by control system, are controlled the switching of each magnetic valve.After loading power electric, with control system, start production line, dallied several minutes completely, with manually by elevator, to the A agent bin, adding except the cyanogen agent respectively, to the B agent bin, add defluorinating agent stand-by in advance.Control system can be by agent bin top the weight sensor perception of installation add the weight data of feed bin.A, B agent bin bottom also go out to be equipped with to be controlled by the conveying worm of control system at conical outlet, by conveying worm can according to selected formula to reaction warehouse add amount of calculation except cyanogen agent or defluorinating agent.After reinforced, close the later equipment in metering powder storehouse, with the forklift of airtight driving cabin, overhaul clinker material is sent into to feed hopper, through vibrating feeder, overhaul clinker material is sent into to disintegrating machine, be crushed to the pellet of 30 millimeter, after the belt conveyor deironing of tramp iron separator, send into the first elevator, the first elevator enters the metering feed bin, and records through the weight sensor monitoring that is arranged on feed bin top the pellet weight that enters the metering feed bin.the metering feed bin passes through the lower taper mouth to the ball mill feed, the cohesive position top arranges dust excluding hood, dust is taken in deduster, pellet is after the powder that the ball mill ball milling becomes 200 order left and right, through the ball mill discharging mouth, overflow and enter the second elevator, powder is promoted and enters metering powder storehouse, press the switch of the Powder sample of installing metering bulkhead bottom, powder storehouse, get this batch powder sample 200 grams, send into laboratory, according to standard, incite somebody to action wherein 100 gram overhaul ground-slag samples and add pure water or distilled water to one liter, 600 rev/mins of rotating speeds stirred 15 minutes, sampling liquid is in a moment centrifugal on centrifuge, by clear liquid as for the detector charging aperture, the quantitative stoste of start detection instrument Automatic Extraction enters in agitator tank, add buffer solution, after stirred for several minute, measure the concentration of cyanide in this sample liquid, the size of fluoride concentration and pH value, after three numerical stabilities, these data are read in to the Computer Database of control system, and formula preset in this numerical value and calculating hangar is mated to contrast, automatically calculate except the cyanogen agent, the consumption of defluorinating agent and hydrochloric acid, during the heavy filler bin sampling of meter preliminary examination, control system starts the water filling program, starting mode of pump according to amount of calculation 70% from cistern, drawing water, in advance to the reaction warehouse water filling, stand-by to the water that injects amount of calculation in acid-regulating tank, after finishing, water filling starts the reaction warehouse agitator, under stirring, the metering feed bin starts to start the conveying worm discharging of metering bottom, powder storehouse under control system is controlled, another conveying worm startup of discharging opening docking adds the overhaul ground-slag material of amount of calculation in reaction warehouse water, until the overhaul slag after in water, stirring, the conveying worm that control system drives the A agent bin to add in reaction warehouse amount of calculation except the cyanogen agent, according to setting rotating conversion time and speed of agitator stirring reaction, start simultaneously the circulating pump on reaction warehouse outer loop bypass duct, complete the stirring reaction of setting after the time, sample tap sampling liquid is 500 milliliters in the bypass of reaction warehouse outer loop, send sample liquid to laboratory, with artificial colorimetric cylinder or detector, measure the concentration of cyanide value, record concentration of cyanide qualified less than 0.5mg/L after, the conveying worm that control system starts the B agent bin is to the defluorinating agent that adds amount of calculation in reaction warehouse, start simultaneously sour pump to the hydrochloric acid that injects amount of calculation in the water in acid-regulating tank, then the hydrochloric acid solution after diluting imports in reaction warehouse by the valve of acid-regulating tank bottom, stirring reaction is after setting-up time, from 500 milliliters of reaction warehouse outer loop bypass sample tap sampling liquid, send into laboratory inspection fluorinion concentration and pH value, when data less than 10mg/L, pH value is greatly when 6-7, start the slag stock pump of discharge gate, slurries in reaction warehouse are squeezed in Buffer Pool, start agitator, start filter press, slurry in Buffer Pool is squeezed into to Filter Press, the water of separating imports after lautertuns filters to be back in cistern and reuses, Filter Press dried pug is out fallen in the dump truck wagon box of waiting for the filter press below and is transported.It should be noted that the setting of the preliminary checking procedure in overhaul slag harmlessness process, because the cyanide of each factory's overhaul slag supplied materials and the content of fluoride are different, sometimes even with a collection of supplied materials because originate from different positions, nuisance content difference is also very large, in order accurately to grasp chemical feeding quantity, avoid the drawback of dosing repeatedly and the necessary technique of establishing.In the utility model, adopt meter heavy burder storehouse and the metering powder storehouse of weight sensor, both can guarantee that the front end supplied materials remained on the quantity tonnage of setting, also can arrive set tonnage after the closed front end treatment process, save the energy and reduce idle running.The conveying worm of metering powder storehouse, A agent bin and B agent bin bottom blocking not while having guaranteed discharging, airborne dust, accurately reinforced.In the utility model except the cyanogen agent can be the clorox in hypochlorite, calcium hypochlorite can be also hydrogen peroxide.The preferred calcium hypochlorite of the utility model.Defluorinating agent in the utility model can be the calcium salts such as calcium chloride, calcium oxide, calcium hydroxide, calcium carbonate, the utility model preferably calcium hydroxide.Acid in the utility model is hydrochloric acid.The utility model is based on overhaul slag harmlessness industrial applications scheme under the normal temperature liquid-phase condition, compared to external pyrogenic process butanedionedioxime, without consuming additional energy source, do not produce secondary pollution sulfur dioxide, operation cost is low, by split run, process 2000 ton/years of three industrialization checkings and 500 ton/years of industrialization checkings of three split runs processing, project all obtains the environmental impact assessment in the environmental protection Room, Henan Province and checks and accepts.
operation principle of the present utility model is as follows: by fluorine-containing electrolytic cell overhaul slag and the water-soluble calcium ionic compound that contains cyanide, or water soluble magnesium ionic compound, or in water, form the calcium of hypochlorite, magnesium, the sodium salt mixing and water adding, carry out ball milling slurrying, treat that the cyanide that leaches in slurry is decomposed by hypochlorous acid, calcium in fluoride and slurry, magnesium, reaction generates water-fast nontoxic calcirm-fluoride CaF2, magnesium fluoride MgF2, after precipitation, adopt filter press Separation of Solid and Liquid or overanxious settling tank Separation of Solid and Liquid, water after separation, for aforementioned processing technique, solids after precipitation can be used for additive or construction material, realize innoxious without discharging.
Therefore the utility model utilizes strong conformability and the reproducibility of cryanide ion, because cyanide has hypertoxicity, for the waste water that contains cyanide and in case cause the pollution of cyanide to be processed.The method of processing is mainly the CN that utilizes
-Character:
Reproducibility:
CN
-Reproducibility compare I
-A little less than in the of one, compare Br
-The last one, can be by Na C1O, C1
2Deng the oxidation of oxidant institute,
Available reaction equation is expressed as:
(1) NaClO+NaCN=NaCNO+NaCl (Zassol NaCNO is nontoxic)
(2)?5Cl
2+10Na0H+2NaCN=2NaHC0
3+N
2+l0NaCl+4H
2O
Cl
2+Ca(OH)
2+2NaCN=CaCO
3+N
2+2NaCl+H
2O
The fluoride that leaches in the overhaul slag is usually with soluble fluoride (NaF
2The aqueous solution is alkalescence) present, fluorine extensively is present in natural water, in each tissue of human body, also all contains a certain amount of fluorine, and appropriate fluorine is useful to human body, but excessive fluorine has infringement; Sodium fluoride is 6-12 grams to people's lethal dose; Fluorine excessive in water there will be fluorosis of bone.
The utility model adopts the treatment process that adds the slurrying of water-soluble calcium magnesium ion blend ball milling to make the mode of calcium ions and magnesium ions and free fluorine reaction generation calcirm-fluoride, magnesium fluoride or aluminum fluoride precipitation remove water-soluble free fluorine.
Hypochlorous acid is a kind of strong oxidizer, with chlorine, compares, and it has, and oxidisability is stronger, simple and safe operation, be subjected to the less characteristics of impact of pH value.Chlorine only is oxidized to the cyanate that toxicity is less (NaCNO) by CN usually to the oxidation of cyanide, and exigent pH value, sees reaction equation (1), and chlorine dioxide can be oxidized to N by CN to the oxidation of cyanide
2And C0
2, see reaction equation (2), thoroughly eliminate the toxicity of cyanide.
CN
-+?Cl
2?+20H
-?--CNO?+?2CI?+?H
20
2CN
-?+?2C10
-?--?2C0
2?+?N
2?+?Cl
2
In actual process, except the cyanogen agent, adopt bleaching powder, calcium hypochlorite or clorox or hydrogen peroxide are processed the overhaul slag, preferred bleaching powder Ca (C10)
2CaCl
2Ca (OH)
22H
20.Defluorinating agent adopts a kind of in calcium chloride, calcium oxide, calcium hydroxide or calcium carbonate, this production technology preferably calcium hydroxide.Acid is with sour.Defluorinating agent calcium hydroxide in the utility model and hydrochloric acid reaction generate free calcium ion, with free fluorine, are combined, and generate water-fast calcirm-fluoride.
Calcium hypochlorite resolves into a large amount of Ca ions and ClO in water
-(hypochlorite),
That is: Ca (ClO)
2+ C0
2+ H
20=CaC0
3+ 2HCIO
Namely in water, have: CaC0
3+ 2HClO+CaCl
2: Ca (OH)
2+ H
20
: 2CN
-+ 2C10
--2C0
2+ N
2+ 2Cl
-
Ca (0H)
2+ 2Cl
-: a Ca (ClO)
2+ CaCl
2:+2H
20
2NaF+Ca(OH)
2--CaF
2+2NaOH
CaCl
2+2NaF
2--CaF
2+2NaCl
MgCl
2+NaF--MgF
2+NaCl
AlCl
3+3NaF--AlF
3+3NaCl。
Claims (10)
1. electrolytic aluminium overhaul slag harmlessness treatment system, comprise feed hopper, the metering feed bin, ball mill, metering powder storehouse, reaction warehouse, filter press and cistern form, feed hopper is connected with the metering feed bin by the first elevator, the metering bin outlet is connected with ball mill, ball mill is connected with metering powder storehouse by the second elevator, metering powder storehouse is connected with reaction warehouse by conveying worm, on reaction warehouse, also be connected with A agent bin and B agent bin, A agent bin and B agent bin all are communicated with reaction warehouse by conveying worm, on reaction warehouse, also be provided with acid-regulating tank, also be provided with cistern, cistern is communicated with reaction warehouse and acid-regulating tank respectively by water inlet pipe, the reaction warehouse discharge gate is connected with filter press by pipeline, it is characterized in that: described reaction warehouse comprises the carbon steel warehouse, on carbon steel warehouse inwall, be provided with the reaction warehouse corrosion-inhibiting coating.
2. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 1, it is characterized in that: described reaction warehouse corrosion-inhibiting coating is glass fabric coating or ultra-high molecular weight polyethylene coating.
3. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 1, it is characterized in that: on described reaction warehouse, also be provided with the circulation bypass, in the circulation bypass, be provided with circulating pump and sample tap, the circulation bypass is communicated with water inlet pipe by pipeline, on the pipeline between water inlet pipe and circulation bypass, is provided with check valve.
4. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 1, it is characterized in that: described acid-regulating tank comprises the carbon steel tank body, in the carbon steel tank body, is provided with the acid-regulating tank corrosion-inhibiting coating.
5. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 4, it is characterized in that: described acid-regulating tank corrosion-inhibiting coating is glass fabric coating or ultra-high molecular weight polyethylene coating.
6. the described electrolytic aluminium overhaul of any one slag harmlessness treatment system according to claim 1-5, it is characterized in that: on feed hopper top, feed hopper and the first elevator junction, ball mill and the second elevator junction and the second elevator be provided with dust excluding hood with metering feed bin junction, all dust excluding hoods are connected with deduster.
7. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 6, it is characterized in that: the reaction warehouse discharge gate is communicated with the waste residue Buffer Pool by pipeline, the waste residue Buffer Pool is connected with filter press by slag-transporting pipe, the liquid outlet of filter press is communicated with lautertuns by pipeline, and the delivery port of lautertuns is communicated with cistern.
8. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 7, it is characterized in that: bottom, described metering powder storehouse is provided with the sampler with valve.
9. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 8, is characterized in that: in ball mill is located at soundproof room.
10. electrolytic aluminium overhaul slag harmlessness treatment system according to claim 8, it is characterized in that: described metering feed bin, metering powder storehouse, A agent bin and B agent bin are provided with weight sensor, weight sensor is electrically connected to control system, ball mill, spiral send the upper magnetic valve of machine, reaction warehouse, filter press all with control system, to be electrically connected to, and by control system, are controlled the switching of each magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203074614U CN203291434U (en) | 2013-05-31 | 2013-05-31 | Harmless processing system for electrolytic aluminium overhaul slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203074614U CN203291434U (en) | 2013-05-31 | 2013-05-31 | Harmless processing system for electrolytic aluminium overhaul slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291434U true CN203291434U (en) | 2013-11-20 |
Family
ID=49567482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203074614U Expired - Lifetime CN203291434U (en) | 2013-05-31 | 2013-05-31 | Harmless processing system for electrolytic aluminium overhaul slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203291434U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831285A (en) * | 2014-03-12 | 2014-06-04 | 郑州经纬科技实业有限公司 | Aluminum electrolyzed waste carbon residue innocent treatment system and method thereof |
| CN105617596A (en) * | 2015-12-27 | 2016-06-01 | 河南中孚实业股份有限公司 | Wet-process harmless treatment method for electrolytic bath overhaul residue |
| CN110528027A (en) * | 2019-09-27 | 2019-12-03 | 沈阳铝镁设计研究院有限公司 | A kind of method of electrolytic cell overhaul gas collection |
| CN111468506A (en) * | 2020-04-14 | 2020-07-31 | 河南绿泽环保科技有限公司 | Explosion-proof safe overhaul slag treatment device and harmless treatment process |
-
2013
- 2013-05-31 CN CN2013203074614U patent/CN203291434U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831285A (en) * | 2014-03-12 | 2014-06-04 | 郑州经纬科技实业有限公司 | Aluminum electrolyzed waste carbon residue innocent treatment system and method thereof |
| CN103831285B (en) * | 2014-03-12 | 2015-09-30 | 郑州经纬科技实业有限公司 | Aluminium electroloysis is given up breeze innocuity disposal system and method thereof |
| CN105617596A (en) * | 2015-12-27 | 2016-06-01 | 河南中孚实业股份有限公司 | Wet-process harmless treatment method for electrolytic bath overhaul residue |
| CN110528027A (en) * | 2019-09-27 | 2019-12-03 | 沈阳铝镁设计研究院有限公司 | A kind of method of electrolytic cell overhaul gas collection |
| CN110528027B (en) * | 2019-09-27 | 2021-08-31 | 沈阳铝镁设计研究院有限公司 | Method for large repairing gas of electrolytic cell |
| CN111468506A (en) * | 2020-04-14 | 2020-07-31 | 河南绿泽环保科技有限公司 | Explosion-proof safe overhaul slag treatment device and harmless treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103239828B (en) | Harmless production process of program-control and manual-control electrolytic aluminum overhaul residues | |
| CN104984984B (en) | A kind of aluminium cell slag from delining resource method for innocent treatment and system | |
| CN105728440B (en) | A kind of aluminium cell slag from delining innocuity disposal system and processing method | |
| CN203291434U (en) | Harmless processing system for electrolytic aluminium overhaul slag | |
| CN101444660B (en) | Innocent treatment of cyanide and fluoride in solid waste residues and recycling process thereof | |
| CN205762896U (en) | A kind of aluminium cell slag from delining innocuity disposal system | |
| CN107597801B (en) | A method of barium slag is handled using ardealite innocent | |
| CN113426796A (en) | Electrolytic aluminum overhaul slag, method for recycling overhaul slag leachate and application method of recycled materials | |
| CN109332350A (en) | Aluminium electroloysis overhaul dregs innocent treatment method | |
| CN205146863U (en) | Electrolytic aluminum slot liner innocent treatment device that gives up | |
| CN105923643B (en) | The method and recovery system of calcirm-fluoride are reclaimed in a kind of slag from delining from aluminium cell | |
| CN109112291B (en) | Wet grinding-closed curing vanadium extraction system and method | |
| CN204529994U (en) | The treatment unit of waste cathode carbon block in electrolysis of aluminum waste tank lining | |
| CN105331822A (en) | Method for recycling vanadium in waste containing vanadium | |
| CN109970089A (en) | A kind of method and system preparing barium sulfate using barium slag | |
| CN205183308U (en) | System for utilize high -efficient decontaminating agent of alkaline residue production | |
| CN107363074B (en) | A kind of aluminium cell carbonaceous materials recycling is the method for alternative fire coal | |
| CN204685646U (en) | The treating apparatus of aluminium electroloysis waste lining | |
| CN101914682A (en) | Method for recovering Zn, Pb and Ag from electrolytic zinc acid leaching slag | |
| CN204866824U (en) | Aluminium cell overhaul sediment resource innocent treatment system | |
| CN202072566U (en) | Treatment system for waste water containing high-concentration hydrofluoric acid | |
| CN205773365U (en) | A kind of aluminium electrolysis cell cathode carbon block reclaims the system of graphite | |
| CN109127648A (en) | The method of innoxious continuous processing aluminium electrolytic tank | |
| CN212492299U (en) | Harmful smoke and dust plasma environmental protection processing apparatus | |
| CN205500807U (en) | Aluminium cell waste residue integrated processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180212 Address after: Huaya Plaza, Zhongyuan District of Jianshe Road Tongbai road 450000 Henan city of Zhengzhou Province Patentee after: Beijing Environmental Protection Technology Co.,Ltd. Kelinze Address before: Taiyuan South Road, Jianxi District 471000 apricot District in Henan province Luoyang City, room 6-2-602 Patentee before: Wu Zhengjian |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191015 Address after: Room 102, 87 Shuguang Road, Beishan Street, Xihu District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Yutao Environmental Protection Technology Co.,Ltd. Address before: Huaya Plaza, Zhongyuan District of Jianshe Road Tongbai road 450000 Henan city of Zhengzhou Province Patentee before: Beijing Environmental Protection Technology Co.,Ltd. Kelinze |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |