CN103406490A - Foundry waste sand regeneration and reuse method and device - Google Patents
Foundry waste sand regeneration and reuse method and device Download PDFInfo
- Publication number
- CN103406490A CN103406490A CN2013102813238A CN201310281323A CN103406490A CN 103406490 A CN103406490 A CN 103406490A CN 2013102813238 A CN2013102813238 A CN 2013102813238A CN 201310281323 A CN201310281323 A CN 201310281323A CN 103406490 A CN103406490 A CN 103406490A
- Authority
- CN
- China
- Prior art keywords
- sand
- material outlet
- bucket elevator
- material inlet
- tank
- 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
Links
- 239000004576 sand Substances 0.000 title claims abstract description 286
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000002699 waste material Substances 0.000 title claims abstract description 32
- 230000008929 regeneration Effects 0.000 title abstract description 17
- 238000011069 regeneration method Methods 0.000 title abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000001035 drying Methods 0.000 claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000006148 magnetic separator Substances 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 24
- 230000003139 buffering effect Effects 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 238000005201 scrubbing Methods 0.000 claims abstract description 8
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000004062 sedimentation Methods 0.000 claims abstract description 3
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 claims description 266
- 239000000463 material Substances 0.000 claims description 126
- 239000000428 dust Substances 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 29
- 238000009835 boiling Methods 0.000 claims description 26
- 238000002203 pretreatment Methods 0.000 claims description 19
- 238000009991 scouring Methods 0.000 claims description 18
- 238000004064 recycling Methods 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 8
- 230000005389 magnetism Effects 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 211
- 239000012535 impurity Substances 0.000 description 23
- 230000008569 process Effects 0.000 description 19
- 238000005266 casting Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000009418 renovation Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VQAPWLAUGBBGJI-UHFFFAOYSA-N [B].[Fe].[Rb] Chemical compound [B].[Fe].[Rb] VQAPWLAUGBBGJI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010125 resin casting Methods 0.000 description 2
- 238000007528 sand casting Methods 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- -1 vibratory sieve Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000320 mechanical mixture Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A foundry waste sand regeneration and reuse method comprises the following steps: pretreatment of waste sand: the original waste sand is removed with waste garbage through a closed grid unloader, removed with waste iron through a suspension type magnetic separator, removed with large-particle waste sand through a linear vibrating screen, and removed with waste scrap ions through a cut-through magnetic separator, and then enters a waste sand storage tank for storage; cleaning of waste sand: the pretreated waste sand is conveyed to a cleaning area through a sand pump, is introduced to the sand-water separator to remove part of water, then enters a scrubbing-cleaning combined tank for scrubbing and cleaning, enters a buffering concentration tank for sedimentation and concentration, and finally enters a dewatering screen to get rid of part of the water; drying: after the above processing, the waste sand is subjected to low-temperature drying or high-temperature roasting to obtain reclaimed sand, then the reclaimed sand is put into a regeneration sand tank for storage; lamination of regenerated sand: the measured regenerated sand is heated to a certain temperature through a heater, and is put into a precoated sand blender together with adhesive to mix evenly, then the mixture is cooled to room temperature to obtain the precoated sand, and the precoated sand is put into a bucket for storing finished sand.
Description
Technical field
The present invention relates to a kind of recycling cast waste sand recovery method, is the method that the useless sand reclamation that foundry industry produces is recycled, the open equally equipment for antiquated sand regeneration of the present invention.
Background technology
Since two thousand, the average speedup of China's casting industry is all more than 10%, becomes global maximum castings production state.China's casting output had been broken through 4,000 ten thousand tons in 2011, occupied first place in the world.Sand casting is the basic technology in Foundry Production, and in casting industry, about 90% foundry goods is the explained hereafter that adopts sand casting.Manufacture one ton of qualified foundry goods, approximately need the sand mold of a ton.The basic raw material of manufacturing sand mold is casting model powder and moulding sand binder, and the most frequently used casting model powder is siliceous sand.The annual siliceous sand needed more than 4,000 ten thousand tons of the casting industry of China.A large amount of siliceous sands derive from nature, but along with the development of Building Trade in China and the construction of infrastructure also need a large amount of sand, cause natural sand resource fewer and feweri, the cost of exploitation is more and more higher, for the sustainable development of casting industry, necessary recycling foundry goods is made the antiquated sand of rear generation.The renovation process of antiquated sand has thermal reclamation, wet reclamation and mechanical friction regeneration etc., in order to obtain reclaimed sand of fine quality, generally adopts thermal reclamation and mechanical friction regeneration to combine or wet reclamation is regenerated and combined with mechanical friction.In the production process of reclaimed sand, the selection of renovation process and the collocation between equipment are very crucial to continuity, the stationarity of the quality of reclaimed sand and production.
We know, no matter foundry industry molding sand used is precoated sand or resin sand, be all to adopt the forming agent of organic adhesive as sand, foundry goods is in casting process, and hot environment can make organic adhesive pyrolysis carbonization, produce complicated material, these materials can firmly be adsorbed on the surface of gravel, if such antiquated sand adopts merely mechanical method of reproduction, the impurity on antiquated sand surface is difficult to remove, the reclaimed sand poor quality obtained, can not be applied to the intricate casting that dimension precision requirement is higher.
The regeneration recoverying and utilizing method of antiquated sand has had report, as number of patent application: CN201210361378.5, patent name: casting utilizes system process with the self-hardening sand reclaiming, disclose casting and utilized system process with the self-hardening sand reclaiming, this technique comprises, induction system, crushing and screening magnetic separation system, vibration regenerative system, elevator system, 1 dust pelletizing system, centrifugal regenerative system, boiling cooling system, 2 dust pelletizing systems, storage sand system and electric-control systems.
The equipment adopted is recycled in the regeneration of antiquated sand has document open equally, as number of patent application: CN201220485689.8, patent name: full-automatic resin casting regeneration production line, disclose a kind of full-automatic resin casting regeneration production line, comprised sand shakeout system, shakeout, suspension magnetic separator, disintegrating machine, regenerating device, winnowing machine, two-chamber sand storage, batch mixing bucket, puddle mixer etc.As number of patent application: CN200920258838.5, patent name: large-scale self-hardening sand regeneration apparatus for crushing of vibrating shakeout, disclose a kind of equipment and can meet the large-scale self-hardening sand reclamation of return sand in Foundry Production, realize the effect of low energy consumption, high production.
Current disclosed antiquated sand renovation process, equipment are merely to adopt mechanical method of reproduction, the reclaimed sand impurity content obtained is high, the reclaimed sand coefficient of expansion is large, can only be for the production of the not high foundry goods of dimension precision requirement, if expect the reclaimed sand of high-quality, antiquated sand must be regenerated in conjunction with machinery through the high-temperature roasting of 700 ℃ again, regeneration cost is very high.
Summary of the invention
The objective of the invention is to disclose a kind of antiquated sand renovation process, the reclaimed sand impurity content that adopts the method to obtain is low, the reclaimed sand coefficient of expansion is little, and antiquated sand renovation process of the present invention is continuous automatic production, and output is large, and cost is low.The equipment that the present invention provides this antiquated sand renovation process to adopt equally.
Concrete technical scheme of the present invention is as follows:
The recycling cast waste sand reuse method, comprise the steps:
(a) pre-treatment of antiquated sand: former antiquated sand is removed waste and old rubbish by closed grid unloader in the pre-treatment district, then through suspended magnetic separator, remove scrap iron, through linear vibrating screen, remove the bulky grain antiquated sand again, finally by through magnetic separator, remove waste iron filing, enter the antiquated sand storage tank and deposit;
(b) scouring of antiquated sand: above-mentioned antiquated sand through pre-treatment is conveyed into cleaning area by sand pump, at first pass into the sand water separator and remove part moisture, then enter and clean the combination cylinder scouring, by buffering concentration tank sedimentation concentration, slough part moisture finally by crossing dewatering screen;
(c) drying: antiquated sand goes low temperature drying or high-temperature roasting through above-mentioned after the processing of cleaning area, obtain reclaimed sand, puts into the reclaimed sand tank stores;
(d) overlay film of reclaimed sand is processed: the reclaimed sand of metering is heated to uniform temperature by heater, together puts into the precoated sand mixer with adhesive, stirs, and is cooled to normal temperature, obtains precoated sand, puts into the finished sand storage bucket.
Antiquated sand method for reclaiming of the present invention is divided into four zones to the antiquated sand regenerative process, pre-treatment district, cleaning area, dry section and overlay film district, former antiquated sand is in the processing of the closed grid unloader of pre-treatment district process, magnetic separator, vibratory sieve, iron block, the iron filings in most of impurity on former antiquated sand surface, antiquated sand, and the bulky grain antiquated sand is separated, the antiquated sand particle obtained is relatively more even, impurity content greatly reduces, can alleviate the live load of friction scrubbing apparatus in cleaning area, and increase work efficiency.Out bulky grain antiquated sand of screening is with after crusher in crushing, with former antiquated sand together for the raw material of pre-treatment.Removing of antiquated sand surface impurity is to adopt the method for cleaning, exactly antiquated sand is put into and cleaned cylinder, then High Rotation Speed is cleaned the inner casing of cylinder, make phase mutual friction between the antiquated sand particle, collision mutually, surperficial impurity removal, for fear of removing the impurity dust pollution workshop that gets off, the mode that the present invention adopts wet method to clean, remove the impurity got off trickleer because of particle, the linear velocity obtained in cleaning cylinder is more much smaller than sand grains, and the density ratio sand grains of impurity is little, be easy to be washed away by flowing water, the impurity on antiquated sand surface reduces gradually, final impurity almost or is fully cleaned.Antiquated sand moisture content after cleaning is high, necessary through processed, otherwise next step drying process energy consumption will be very large.The drying process of the antiquated sand after cleaning, according to the size of sand grains, can be divided into low temperature drying and high-temperature roasting.Sand grains>1mm's, adopt high-temperature roasting, this is because impurity is also contained in the sand inside of this particle, the molding sand that the reclaimed sand that common drying means obtains is made is in casting process, under hot environment, the impurity of sand grains inside can decompose, and smaller volume or change are large, affect the dimensional accuracy of foundry goods, serious caused foundry goods produces slight crack.The antiquated sand of cleaning will be through the break process of disintegrating machine before roasting, can make the impurity of sand grains inside out exposed, remove iron tramp by permanent magnetic motor, then roasting under 300～400 ℃ of high temperature, organic impurities is oxidized to gas, and the reclaimed sand finally obtained almost or does not fully have impurity.The dry cold drying that adopts of the sand grains of particle<1mm, the drying equipment of employing is less demanding, as long as can produce the equipment of 100～200 ℃ of temperature, can use, as blast drier.The present invention adopts three backhaul dryers, and it has compact conformation, and floor space is few, reliable operation, the advantage such as energy consumption is low, and the thermal efficiency is high, and drying materials is effective, realizes that easily automation controls, and operating personnel are few.At first sand grains after cleaning can adopt solar energy drying, and then uses three backhaul driers, can reduce energy consumption like this, reduces costs.
The reclaimed sand obtained after super-dry can be used for producing precoated sand, resin sand.Because antiquated sand is little through the reclaimed sand coefficient of expansion that renovation process of the present invention obtains, uniform particles, performance is better than fresh sand.The phenolic sand molding dimensional accuracy is more weaker than precoated sand moulding, so the present invention adopts reclaimed sand to produce precoated sand, is used in the intricate casting that dimension precision requirement is higher, in the casting such as engine body etc.The production process of precoated sand is by the thermosetting phenolic resin of powdery and roughing sand mechanical mixture, solidifies during heating, makes on sand grain surface to be covered with one deck solid resin film.
Realize that equipment of the present invention is divided into pre-treatment district, cleaning area, low temperature drying district, cures district and overlay film district;
The equipment that the pre-treatment district adopts comprises closed grid unloader, suspended magnetic separator, dust arrester, linear vibrating screen, through magnetic separator, bucket elevator, disintegrating machine and antiquated sand storage tank, the bottom of closed grid unloader is waste and old garbage discharge outlet, top is connected with dust arrester A, between closed grid unloader and suspended magnetic separator, be provided with belt conveyor, between suspended magnetic separator and elevator A, be provided with belt conveyor, elevator A material outlet below is provided with linear vibrating screen, the bulky grain antiquated sand outlet of linear vibrating screen bottom has disintegrating machine, the linear vibrating screen material outlet is corresponding with the entrance of through magnetic separator, through magnetic separator is connected with bucket elevator B, between the material outlet of bucket elevator B and antiquated sand storage tank entrance, be provided with belt conveyor, suspended magnetic separator, the top of carrying machine bucket, linear vibrating screen, through magnetic separator and antiquated sand storage tank are connected with dust arrester (2) with pipeline, described dust arrester is the cyclone type dust arrester.
The equipment that cleaning area adopts comprises the sand water separator, cleans combination cylinder, buffering concentration tank and dewatering screen; Described scouring combination cylinder is that several combine with the scouring cylinder body that is connected in series mode; Around described sand water separator casing, be provided with several separators; Described buffering concentration tank tank base has the centrum of two different angles, between two centrums, the decompression back taper is arranged.Between the antiquated sand holding vessel material outlet that the pre-treatment district arranges and the sand water separator material inlet of scrubbing area, be provided with sand pump, sand water separator sand export is corresponding with scouring combination cylinder material inlet; Clean the combination cylinder material outlet and with the material inlet of another grit water separator, be connected with sand pump with pipeline, the outlet of shaking out of another grit water separator is corresponding with the material inlet of buffering concentration tank; Buffering concentration tank material outlet is corresponding with the dewatering screen material inlet; Dewatering screen material outlet place is provided with belt conveyor.
The equipment that the low temperature drying district adopts comprises three backhaul drying units, linear vibrating screen, boiling cooling bed, dust arrester, bucket elevator, pneumatic conveyer, semi-finished product tank, boiling dedusting bed and finished pot; Between the dewatering screen of scrubbing area and three backhaul drying plants, be provided with belt conveyor; Three backhaul drying plant material outlets are corresponding with the material inlet of linear vibrating screen, and the material outlet of linear vibrating screen is corresponding with the material inlet of boiling cooling bed, are provided with belt conveyor between boiling cooling bed material outlet and bucket elevator material inlet; The bucket elevator material outlet is corresponding with the pneumatic conveyer material inlet; The pneumatic conveyer material outlet is corresponding with semi-finished product tank material inlet; The semi-product material outlet is corresponding with boiling dedusting bed material inlet; Boiling dedusting bed material outlet is corresponding with the bucket elevator material inlet; Between bucket elevator material outlet and reclaimed sand tank, be provided with belt conveyor; Three backhaul drying units, linear vibrating screen, boiling cooling bed, bucket elevator, semi-finished product tank, boiling dedusting bed are connected with dust arrester with the reclaimed sand tank.
High temperature cures the equipment adopted in district and comprises disintegrating machine, bucket elevator, permanent magnetism seperator, excessive tank, roasting bed, air preheater, boiling cooling bed, settling dust remover, cyclone dust collectors, linear vibrating screen, air blast, tail gas heat exchanger, screw(-type) feeder, air-introduced machine and finished pot; The disintegrating machine material outlet is corresponding with the bucket elevator material inlet, and the bucket elevator material outlet is corresponding with permanent magnetism seperator material inlet; Permanent magnetism seperator material outlet, with excessively the tank material inlet is corresponding, excessively is provided with screw(-type) feeder between tank material outlet and roasting bed material inlet; The tail gas outlet at roasting bed top is connected with air preheater; The cold air inlet of air preheater is connected with air blast, and hot-blast outlet is connected with the roasting bed; The air preheater top is connected with tail gas heat exchanger with pipeline; Roasting bed material outlet is corresponding with the boiling cooling bed material inlet; The boiling cooling bed bottom is connected with air blast, and the tail gas outlet at top is connected with tail gas heat exchanger, and material outlet is corresponding with the material inlet of bucket elevator; The material outlet of bucket elevator is corresponding with the material inlet of linear vibrating screen; The material outlet of linear vibrating screen is corresponding with the material inlet of reclaimed sand tank; Tail gas heat exchanger is connected with settling dust remover; Settling dust remover is connected with cyclone separator; Cyclone separator is connected with air-introduced machine.
The equipment that the overlay film district adopts comprises into sand weighing hopper, bucket elevator, roughing sand heater, overlay film mixer, Water-cooling vibration groove, water cold drum, vibratory sieve, deduster, water cooler and finished sand storage bucket; Advance sand weighing hopper material outlet corresponding with bucket elevator; The bucket elevator material outlet is corresponding with roughing sand heater material inlet; Roughing sand heater material outlet is corresponding with the overlay film mixer; Overlay film mixer material outlet is corresponding with Water-cooling vibration groove material inlet; Water-cooling vibration groove material outlet is corresponding with the water cold drum material inlet; The water cold drum material outlet is corresponding with the vibratory sieve material inlet; The vibratory sieve material outlet is corresponding with the bucket elevator material inlet; The bucket elevator material outlet is corresponding with the water cooler material inlet; The water cooler material outlet is corresponding with the bucket elevator material inlet; The bucket elevator material outlet is corresponding with finished sand storage bucket material inlet; Bucket elevator, precoated sand mixer, Water-cooling vibration groove and water cold drum are connected with deduster; Deduster adopts the composition of decanter type deduster or cyclone dust collector or decanter type deduster and cyclone dust collector.
Advantage of the present invention:
1. antiquated sand has pretreatment procedure before cleaning operation, by pretreatment procedure, has removed the impurity such as the iron block of the overwhelming majority, iron filings, carbide in the antiquated sand, has alleviated the load of cleaning operation, improves and cleans efficiency.
2. to be connected in series the scouring cylinder body combination of mode, antiquated sand is by longer in the scouring cylinder scouring time for several for the friction scrubbing apparatus of scouring operation employing, and scrub effect is good.
Through the sand grains cleaned according to granular size, adopt different drying modes, guaranteed the quality of reclaimed sand.
4. antiquated sand renovation process automaticity of the present invention is high, and the operation in regional can be produced separately, and maintenance is convenient.
5. by antiquated sand renovation process of the present invention, the reclaimed sand coefficient of expansion is little, uniform particles, and performance is better than fresh sand.
The accompanying drawing explanation
The process chart of Fig. 1 antiquated sand regeneration pre-treatment;
Process chart is cleaned in the regeneration of Fig. 2 antiquated sand;
The process chart of Fig. 3 antiquated sand regeneration low temperature drying;
The process chart that Fig. 4 antiquated sand regeneration high-temp cures;
Fig. 5 antiquated sand regeneration coating technique flow chart;
Fig. 6 sand water separator longitudinal sectional view;
Fig. 7 sand water separator stereogram;
Fig. 8 sand water buffering concentration tank stereogram;
Fig. 9 sand water buffering concentration tank longitudinal sectional view;
Figure 10 cleans the cylinder top view;
Figure 11 cleans the cylinder stereogram.
The specific embodiment
As Fig. 1～shown in Figure 5, recycling cast waste sand reuse process of the present invention is divided into pre-treatment, scouring, drying and four operations of overlay film, the equipment of using is divided into pre-treatment district, scrubbing area, dry section and overlay film district accordingly, according to the difference of baking temperature, be divided into low temperature drying and high temperature and cure two kinds of modes.
The pre-treatment of former antiquated sand: former antiquated sand joins in closed antiquated sand grid unloader, under the effect of grid unloader, isolates the waste and old rubbish such as carbide, organic dust of resin, collects from the waste and old garbage discharge outlet of grid unloader bottom; The dust arrester of the semiclosed dust excluding hood of wind curtain type is adopted at grid unloader top, guarantees dust removing effects.Isolate sand grains and send into suspended magnetic separator by belt, the magnetic field intensity B of magnetic separator >=5000 Gausses, magnet is selected rubidium iron boron permanent magnet, and the block scrap iron in antiquated sand is isolated; The antiquated sand of isolating the scrap iron piece arrives bucket elevator with Belt Conveying, and bucket elevator adopts the plate chain type bucket elevator, and material adopts the 16Mn steel, and wearability is good; From bucket elevator antiquated sand out, enter linear vibrating screen, utilize the vibrating motor exciting as vibration source, make antiquated sand tossed on screen cloth, while is moving linearly forward, antiquated sand enters the charging aperture of screening machine equably from batcher, produce the oversize, screenings of two kinds of specifications, from outlet separately, discharge respectively by Double-layer screen; Screenings is the sand grains that particle is greater than 1mm, with after crusher in crushing, mixing with former antiquated sand, together with the grid unloader, processes; Particle is less than the sand grains of 1mm and processes with through magnetic separator, the magnetic field intensity B of magnetic separator >=5000 Gausses, and magnet is selected rubidium iron boron permanent magnet, selects the waste iron filing in sand grains; Isolate sand grains that scrap iron cuts by bucket elevator and belt conveyor, put into the antiquated sand tank stores.Antiquated sand through pre-treatment has been removed most iron tramp, and evenly, appearance is black to size, and quartz sand surface absorption has one deck carbide impurity, must after scrub, just can be back to the production precoated sand.
The scouring of antiquated sand: water and sand pump are as driving medium and the power (weight ratio of water and antiquated sand is about 2:1) of antiquated sand, antiquated sand is pumped into the sand water separator from the antiquated sand tank, several separators (as shown in Figure 6,7) are arranged around the body of sand water separator, in the middle of sand water separator fuselage, there is dividing plate separately, be divided into upper and lower casing, sand water enters the sand water separator from lower box, then enter each separator carry out sand, moisture from, sand is discharged from the outlet of separator bottom, moisture content, in 80% left and right, removes to clean cylinder and cleans.Clean the scouring cylinder body that cylinder (as shown in Figure 10,11) fuselage has several to connect with series system, each cleans cylinder body inner casing and outer shell, the wear-resistant baffle plate of outer shell liner content and high manganses and chromium content, clean cylinder body for 2～3 and share a motor, cleaning on cylinder deck is flat plastic or sheet metal, and cleaning cylinder body outside periphery is the concrete fuselage.Antiquated sand is cleaned cylinder body from first and is entered, cleaning the motion of cylinder body high speed, mutual collision friction, the partial impurities on sand body surface is removed, and then water washes away, antiquated sand enters second and cleans cylinder body continuation scouring, the impurity on surface further is removed, and cleans through last the antiquated sand substantially free of impurities that cylinder body is cleaned, and water washes away the impurity that removes, therefore the water content of sand is very large, separates with the sand water separator; The water-containing rate that separation obtains through the sand water separator is still up to 60～80%, put into buffering concentration tank (as shown in Figure 8,9), the centrum of buffering concentration tank bottom is two centrums that are different angles, the effect of two centrums is different, upper one is settlement action, and the next one is deposition, and design can prevent that the sand deposition is too fast like this, cause the sand of tank base to deposit too closely knitly, block bottom and go out sand pipeline.In order to prevent interrupting because accident causes producing, deposition makes sand closely knit for a long time, blocks tank base and pipeline, affects follow-up production, between two centrums, also is provided with a back taper, and the back taper top is provided with a high-pressure water pipe; Too closely knit when the sand of deposition, to high-pressure water pipe, pass into water under high pressure, high pressure water flushing, on the back taper surface, then sprays to surrounding, and the sand around making is loose.Through the concentrated water-containing rate of buffering concentration tank, be 20～40%, process with dewatering screen, by the vibration of dewatering screen, slough moisture; The water-containing rate of processing by dewatering screen is below 20%, and appearance is pure white, is carried and is removed drying process by belt conveyor.
Low temperature drying: enter three backhaul drying units from dewatering screen sand out with Belt Conveying and carry out the drying processing, 150～200 ℃ of baking temperatures, from three backhaul drying units dry sand out, pass into linear vibrating screen, utilize the vibrating motor exciting as vibration source, make sand tossed on screen cloth, the while is moving linearly forward, and sieve removes dust (granularity is less than the particulate of 0.01mm), then enter boiling cooling bed, under the cold wind effect, be cooled to below 80 ℃; Then with belt, be sent to bucket elevator, submit to pneumatic conveyer, sand grains in pneumatic conveyer by the wind-force effect, blow away micro mist, plaster in sand grains, then put into the semi-finished product tank, then be conveyed into boiling dedusting bed from the semi-finished product tank, micro mist, plaster under airflow function, blowing away sand grains, guarantee that powder content is less than 0.1%, finally, by bucket elevator and belt, be conveyed into the reclaimed sand storage tank stores, the reclaimed sand appearance obtained is pure white, uniform particles, SiO
2Be greater than 98%, moisture content<0.2%, igloss amount<0.2%.
High temperature cures: the bulky grain sand that the dewatering screen sifts out (crusher in crushing of granularity>1mm), then with bucket elevator, be transported to the permanent magnetism seperator, magnetic field intensity B is 3000～5000 Gausses, isolate iron filings, sand grains is put into excessive tank, with screw(-type) feeder, be conveyed into the roasting bed from transition tank again, the hot blast temperature of roasting bed is 300～400 ℃, hot blast is produced by air blast and air preheater, in order to reduce energy consumption, the tail gas that the roasting bed produces is connected with air preheater, and tail gas passes through to supplement heat energy at air preheater, then returns to the roasting bed.Sand after roasting passes into boiling cooling bed, is cooled to below 100 ℃ under cold wind, then with bucket elevator, is conveyed into linear vibrating screen, remove the sand grains that granularity is greater than 1mm and is less than 0.01mm, the reclaimed sand obtained is put into the reclaimed sand storage tank, and the reclaimed sand appearance obtained is pure white, uniform particles, SiO
2Be greater than 98%, moisture content<0.2%, igloss amount<0.2%.
The overlay film of reclaimed sand is processed: reclaimed sand is put into into the sand weighing hopper and measured from the reclaimed sand storage tank, by bucket elevator, be conveyed into the heating of roughing sand heater, making the sand temperature is 100～120 ℃, then transfer in the precoated sand mixer, add adhesive: powdery thermoplastic phenolic resins, the addition of adhesive is 0.5～1% of sand weight, and add 0.1～0.2% calcium stearate, under about 120 ℃, stir 1～3h, then move on in the Water-cooling vibration groove, after being cooled to below 80 ℃, transfer in water cold drum again cooling, temperature is cooled to below 50 ℃, be transported to vibratory sieve, the overlay film sand sieve of particle>2mm is gone, from vibratory sieve out qualified precoated sand with bucket elevator, be conveyed into water cooler and be cooled to below 30 ℃, with bucket elevator, be conveyed into finished sand storage tank bucket again.
Claims (7)
1. the recycling cast waste sand reuse method, is characterized in that, comprises the steps:
(a) pre-treatment of antiquated sand: former antiquated sand is removed waste and old rubbish by closed grid unloader in the pre-treatment district, then through suspended magnetic separator, remove scrap iron, through linear vibrating screen, remove the bulky grain antiquated sand that granularity is greater than 0.2mm again, finally by through magnetic separator, remove waste iron filing, enter the antiquated sand storage tank and deposit;
(b) scouring of antiquated sand: above-mentioned antiquated sand through pre-treatment is conveyed into cleaning area by sand pump, at first pass into the sand water separator and remove part moisture, then enter and clean the combination cylinder scouring, by buffering concentration tank sedimentation concentration, slough part moisture finally by crossing dewatering screen;
(c) drying: antiquated sand goes low temperature drying or high-temperature roasting through above-mentioned after the processing of cleaning area, obtain reclaimed sand, puts into the reclaimed sand tank stores;
(d) overlay film of reclaimed sand is processed: the reclaimed sand of metering is heated to uniform temperature by heater, together puts into the precoated sand mixer with adhesive, stirs, and is cooled to normal temperature, obtains precoated sand, puts into the finished sand storage bucket.
2. recycling cast waste sand reuse method according to claim 1, it is characterized in that, the equipment that described pre-treatment district adopts comprises closed grid unloader, suspended magnetic separator, dust arrester, linear vibrating screen, through magnetic separator, bucket elevator, disintegrating machine and antiquated sand storage tank, the bottom of closed grid unloader is waste and old garbage discharge outlet, top is connected with dust arrester, between closed grid unloader and suspended magnetic separator, be provided with belt conveyor, between suspended magnetic separator and elevator, be provided with belt conveyor, elevator material outlet below is provided with linear vibrating screen, the bulky grain antiquated sand outlet of linear vibrating screen bottom has disintegrating machine, the linear vibrating screen material outlet is corresponding with the entrance of through magnetic separator, through magnetic separator is connected with bucket elevator, between the material outlet of bucket elevator and antiquated sand storage tank entrance, be provided with belt conveyor, suspended magnetic separator, the top of carrying machine bucket, linear vibrating screen, through magnetic separator and antiquated sand storage tank are connected with dust arrester with pipeline, described dust arrester is the cyclone type dust arrester.
3. recycling cast waste sand reuse method according to claim 1, is characterized in that, the equipment that the cleaning area of described antiquated sand adopts comprises the sand water separator, cleans combination cylinder, buffering concentration tank and dewatering screen; Described scouring combination cylinder is that several combine with the scouring cylinder body that is connected in series mode; Around described sand water separator casing, be provided with several separators; Described buffering concentration tank tank base has the centrum of two different angles, between two centrums, the decompression back taper is arranged; Between the antiquated sand holding vessel material outlet that the pre-treatment district arranges and the sand water separator material inlet of scrubbing area, be provided with sand pump, sand water separator sand export is corresponding with scouring combination cylinder material inlet; Clean the combination cylinder material outlet and with the material inlet of another grit water separator, be connected with sand pump with pipeline, the outlet of shaking out of another grit water separator is corresponding with the material inlet of buffering concentration tank; Buffering concentration tank material outlet is corresponding with the dewatering screen material inlet; Dewatering screen material outlet place is provided with belt conveyor.
4. recycling cast waste sand reuse method according to claim 1, it is characterized in that, the temperature of described low temperature drying is 100～200 ℃, and the equipment of employing comprises three backhaul drying units, linear vibrating screen, boiling cooling bed, dust arrester, bucket elevator, pneumatic conveyer, semi-finished product tank, boiling dedusting bed and finished pot; Between the dewatering screen of scrubbing area and three backhaul drying plants, be provided with belt conveyor; Three backhaul drying plant material outlets are corresponding with the material inlet of linear vibrating screen, and the material outlet of linear vibrating screen is corresponding with the material inlet of boiling cooling bed, are provided with belt conveyor between boiling cooling bed material outlet and bucket elevator material inlet; The bucket elevator material outlet is corresponding with the pneumatic conveyer material inlet; The pneumatic conveyer material outlet is corresponding with semi-finished product tank material inlet; The semi-product material outlet is corresponding with boiling dedusting bed material inlet; Boiling dedusting bed material outlet is corresponding with the bucket elevator material inlet; Between bucket elevator material outlet and reclaimed sand tank, be provided with belt conveyor; Three backhaul drying units, linear vibrating screen, boiling cooling bed, bucket elevator, semi-finished product tank, boiling dedusting bed are connected with dust arrester with the reclaimed sand tank.
5. recycling cast waste sand reuse method according to claim 1, is characterized in that, described high temperature cures, and the temperature of curing is 300～400 ℃; The equipment adopted comprises disintegrating machine, bucket elevator, permanent magnetism seperator, excessive tank, roasting bed, air preheater, boiling cooling bed, settling dust remover, cyclone dust collectors, linear vibrating screen, air blast, tail gas heat exchanger, screw(-type) feeder, air-introduced machine and finished pot; The disintegrating machine material outlet is corresponding with the bucket elevator material inlet, and the bucket elevator material outlet is corresponding with permanent magnetism seperator material inlet; Permanent magnetism seperator material outlet, with excessively the tank material inlet is corresponding, excessively is provided with screw(-type) feeder between tank material outlet and roasting bed material inlet; The tail gas outlet at roasting bed top is connected with air preheater; The cold air inlet of air preheater is connected with air blast, and hot-blast outlet is connected with the roasting bed; The air preheater top is connected with tail gas heat exchanger with pipeline; Roasting bed material outlet is corresponding with the boiling cooling bed material inlet; The boiling cooling bed bottom is connected with air blast, and the tail gas outlet at top is connected with tail gas heat exchanger, and material outlet is corresponding with the material inlet of bucket elevator; The material outlet of bucket elevator is corresponding with the material inlet of linear vibrating screen; The material outlet of linear vibrating screen is corresponding with the material inlet of reclaimed sand tank; Tail gas heat exchanger is connected with settling dust remover; Settling dust remover is connected with cyclone separator; Cyclone separator is connected with air-introduced machine.
6. recycling cast waste sand reuse method according to claim 1, it is characterized in that, described overlay film is processed the equipment adopted and is comprised into sand weighing hopper, bucket elevator, roughing sand heater, overlay film mixer, Water-cooling vibration groove, water cold drum, vibratory sieve, deduster, water cooler and finished sand storage bucket; Advance sand weighing hopper material outlet corresponding with bucket elevator (1); Bucket elevator (1) material outlet is corresponding with roughing sand heater material inlet; Roughing sand heater material outlet is corresponding with the overlay film mixer; Overlay film mixer material outlet is corresponding with Water-cooling vibration groove material inlet; Water-cooling vibration groove material outlet is corresponding with the water cold drum material inlet; The water cold drum material outlet is corresponding with the vibratory sieve material inlet; The vibratory sieve material outlet is corresponding with bucket elevator (2) material inlet; Bucket elevator (2) material outlet is corresponding with the water cooler material inlet; The water cooler material outlet is corresponding with bucket elevator (3) material inlet; Bucket elevator (3) material outlet is corresponding with finished sand storage bucket material inlet; Bucket elevator, precoated sand mixer, Water-cooling vibration groove and water cold drum are connected with deduster; Deduster adopts the composition of decanter type deduster or cyclone dust collector or decanter type deduster and cyclone dust collector.
7. recycling cast waste sand reuse method according to claim 1, it is characterized in that, the concrete technology that described overlay film is processed is: reclaimed sand is put into into the sand weighing hopper and measured from the reclaimed sand storage tank, by bucket elevator, be conveyed into the heating of roughing sand heater, making the sand temperature is 100～120 ℃, then transfer in the precoated sand mixer, add the powdery thermoplastic phenolic resin adhesive, the addition of adhesive is 0.5～1% of sand weight, and add 0.1～0.2% calcium stearate, under about 120 ℃, stir 1～3h, then move on in the Water-cooling vibration groove, after being cooled to below 80 ℃, transfer in water cold drum again cooling, temperature is cooled to below 50 ℃, be transported to vibratory sieve, the overlay film sand sieve of particle>2mm is gone, from vibratory sieve out qualified precoated sand with bucket elevator, be conveyed into water cooler and be cooled to below 30 ℃, with bucket elevator, be conveyed into finished sand storage tank bucket again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310281323.8A CN103406490B (en) | 2013-07-05 | 2013-07-05 | Recycling cast waste sand reuse method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310281323.8A CN103406490B (en) | 2013-07-05 | 2013-07-05 | Recycling cast waste sand reuse method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103406490A true CN103406490A (en) | 2013-11-27 |
| CN103406490B CN103406490B (en) | 2015-11-18 |
Family
ID=49599557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310281323.8A Active CN103406490B (en) | 2013-07-05 | 2013-07-05 | Recycling cast waste sand reuse method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103406490B (en) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934411A (en) * | 2014-03-25 | 2014-07-23 | 莱州新忠耀机械有限公司 | PEPSET resin moulding and sand cyclic utilization clean casting technology |
| CN104759584A (en) * | 2015-04-22 | 2015-07-08 | 莒州集团有限公司 | Water glass waste sand regeneration optimizing treatment method and water glass waste sand regeneration optimizing treatment system |
| CN104826983A (en) * | 2015-04-08 | 2015-08-12 | 北京仁创科技集团有限公司 | Alkaline phenolic resin old sand and regeneration method thereof |
| CN104858362A (en) * | 2015-04-30 | 2015-08-26 | 北京仁创科技集团有限公司 | Regeneration technology of foundry used sand |
| CN104959531A (en) * | 2015-07-22 | 2015-10-07 | 平顶山市沙河机械加工厂 | Waste foundry sand dealkalizing regenerative production equipment |
| CN105328115A (en) * | 2015-10-19 | 2016-02-17 | 戴伟平 | Reclaiming method for cast waste sand hot plasmas |
| CN105458174A (en) * | 2016-01-21 | 2016-04-06 | 浙江卡博铜业有限公司 | Sand casting production line |
| CN105728641A (en) * | 2016-03-01 | 2016-07-06 | 潍柴动力股份有限公司 | Regeneration method of casting wet type mixed old sand |
| CN105903897A (en) * | 2016-06-24 | 2016-08-31 | 洛阳凯林铸材有限公司 | Movable resin sand regeneration and lamination production line |
| CN106378415A (en) * | 2016-08-29 | 2017-02-08 | 山西永益铸管股份有限公司 | Pipe casting waste sand recovery method |
| CN106903320A (en) * | 2017-04-25 | 2017-06-30 | 唐山鑫虎重型矿山机械有限公司 | With the equipment of the hot-forming metallurgical raw material metal bloom of waste metal rubbish |
| CN108160916A (en) * | 2018-01-07 | 2018-06-15 | 甘肃北霖新材料科技有限公司 | A kind of method that special purpose high intensity precoated sand is prepared with Desert Sand |
| CN108674914A (en) * | 2018-04-24 | 2018-10-19 | 上柴动力海安有限公司 | A kind of sand processing storing and transporting system of environment-friendly type Vehicle Diesel Engine Block cylinder head casting manufacture |
| CN109093063A (en) * | 2018-08-29 | 2018-12-28 | 禹州市昆仑模具有限公司 | A kind of precoated sand regeneration method |
| CN109954833A (en) * | 2019-04-24 | 2019-07-02 | 十堰长江造型材料有限公司 | Tide mould sand regenerates equipment for after-treatment |
| CN110293206A (en) * | 2019-08-02 | 2019-10-01 | 承德北雁新材料科技有限公司 | Clean sand production technology and system, the method for reclaiming of antiquated sand and system |
| CN110328327A (en) * | 2019-08-08 | 2019-10-15 | 江苏鹏飞集团股份有限公司 | Heat carrier heating regeneration cast old sand device |
| CN110421118A (en) * | 2019-08-05 | 2019-11-08 | 重庆市梁平区宏富贵农机设备制造有限公司 | Automate circulation of sand reutilization system |
| CN110814276A (en) * | 2019-12-06 | 2020-02-21 | 马鞍山市绿科环保科技有限公司 | Method for cleaning impurities in casting waste sand |
| CN111001756A (en) * | 2020-02-19 | 2020-04-14 | 温州够荷科技有限公司 | Casting sand autosegregation grinds recovery unit |
| CN112157212A (en) * | 2020-10-20 | 2021-01-01 | 含山县承力铸造厂 | Foundry waste sand treatment device |
| CN112264577A (en) * | 2020-10-20 | 2021-01-26 | 秦庭东 | Energy-concerving and environment-protective misce bene device when being favorable to casting mulling |
| CN112404344A (en) * | 2020-11-06 | 2021-02-26 | 南通大学 | Casting waste sand regeneration device and method based on heat carrier partition heat transfer |
| CN112403888A (en) * | 2020-10-28 | 2021-02-26 | 滦平县东伟造型材料有限公司 | Drying sand and petroleum fracturing sand composite production line |
| CN112517838A (en) * | 2020-12-03 | 2021-03-19 | 天津众达精密机械有限公司 | Recycling method of waste foundry sand |
| CN114192740A (en) * | 2021-12-13 | 2022-03-18 | 马鞍山市绿科环保科技有限公司 | Method for regenerating solid waste in moisture-preserving mold sand molding process |
| CN114749599A (en) * | 2022-03-31 | 2022-07-15 | 广西兰科资源再生利用有限公司 | Micro-wet method treatment process for waste foundry sand |
| CN114905004A (en) * | 2022-05-06 | 2022-08-16 | 霍山县东胜铸造材料有限公司 | Raw sand treatment method and device for precoated sand preparation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4303453A (en) * | 1979-06-06 | 1981-12-01 | Foundry Design Corp. | Method and apparatus for removing sand from castings |
| JP2005138141A (en) * | 2003-11-06 | 2005-06-02 | Toyota Motor Corp | Method and apparatus for reusing molding sand and water-soluble inorganic salt binder |
| CN201098722Y (en) * | 2007-10-22 | 2008-08-13 | 齐齐哈尔轨道交通装备有限责任公司 | Casting sand regenerating device |
| CN201423427Y (en) * | 2009-01-15 | 2010-03-17 | 十堰飞远汽车零部件有限公司 | Scrubber for casting water glass |
| CN201482914U (en) * | 2009-06-08 | 2010-05-26 | 张培根 | Water glass waste sand regeneration system |
| CN101780521A (en) * | 2009-11-20 | 2010-07-21 | 宜兴市奥兴石英砂处置有限公司 | Process for regenerating forced scrubbing water glass used sand through wet method |
-
2013
- 2013-07-05 CN CN201310281323.8A patent/CN103406490B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4303453A (en) * | 1979-06-06 | 1981-12-01 | Foundry Design Corp. | Method and apparatus for removing sand from castings |
| JP2005138141A (en) * | 2003-11-06 | 2005-06-02 | Toyota Motor Corp | Method and apparatus for reusing molding sand and water-soluble inorganic salt binder |
| CN201098722Y (en) * | 2007-10-22 | 2008-08-13 | 齐齐哈尔轨道交通装备有限责任公司 | Casting sand regenerating device |
| CN201423427Y (en) * | 2009-01-15 | 2010-03-17 | 十堰飞远汽车零部件有限公司 | Scrubber for casting water glass |
| CN201482914U (en) * | 2009-06-08 | 2010-05-26 | 张培根 | Water glass waste sand regeneration system |
| CN101780521A (en) * | 2009-11-20 | 2010-07-21 | 宜兴市奥兴石英砂处置有限公司 | Process for regenerating forced scrubbing water glass used sand through wet method |
Non-Patent Citations (3)
| Title |
|---|
| 樊自田等: "《水玻璃砂工艺原理及应用技术》", 31 March 2004 * |
| 樊自田等: "《铸造质量控制应用技术》", 30 April 2009 * |
| 樊自田等: "新型水玻璃旧砂湿法再生设备***", 《铸造》 * |
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934411B (en) * | 2014-03-25 | 2016-01-20 | 莱州新忠耀机械有限公司 | The moulding of PEPSET resin and sand recycle clean casting technique |
| CN103934411A (en) * | 2014-03-25 | 2014-07-23 | 莱州新忠耀机械有限公司 | PEPSET resin moulding and sand cyclic utilization clean casting technology |
| CN104826983A (en) * | 2015-04-08 | 2015-08-12 | 北京仁创科技集团有限公司 | Alkaline phenolic resin old sand and regeneration method thereof |
| CN104759584A (en) * | 2015-04-22 | 2015-07-08 | 莒州集团有限公司 | Water glass waste sand regeneration optimizing treatment method and water glass waste sand regeneration optimizing treatment system |
| CN104858362A (en) * | 2015-04-30 | 2015-08-26 | 北京仁创科技集团有限公司 | Regeneration technology of foundry used sand |
| CN104858362B (en) * | 2015-04-30 | 2019-05-24 | 北京仁创科技集团有限公司 | A kind of regeneration technology of cast used sand |
| CN104959531A (en) * | 2015-07-22 | 2015-10-07 | 平顶山市沙河机械加工厂 | Waste foundry sand dealkalizing regenerative production equipment |
| CN105328115B (en) * | 2015-10-19 | 2017-09-01 | 戴伟平 | The renovation process of cast waste sand hot plasma |
| CN105328115A (en) * | 2015-10-19 | 2016-02-17 | 戴伟平 | Reclaiming method for cast waste sand hot plasmas |
| CN105458174A (en) * | 2016-01-21 | 2016-04-06 | 浙江卡博铜业有限公司 | Sand casting production line |
| CN105728641A (en) * | 2016-03-01 | 2016-07-06 | 潍柴动力股份有限公司 | Regeneration method of casting wet type mixed old sand |
| CN105903897A (en) * | 2016-06-24 | 2016-08-31 | 洛阳凯林铸材有限公司 | Movable resin sand regeneration and lamination production line |
| CN106378415A (en) * | 2016-08-29 | 2017-02-08 | 山西永益铸管股份有限公司 | Pipe casting waste sand recovery method |
| CN106903320A (en) * | 2017-04-25 | 2017-06-30 | 唐山鑫虎重型矿山机械有限公司 | With the equipment of the hot-forming metallurgical raw material metal bloom of waste metal rubbish |
| CN108160916A (en) * | 2018-01-07 | 2018-06-15 | 甘肃北霖新材料科技有限公司 | A kind of method that special purpose high intensity precoated sand is prepared with Desert Sand |
| CN108674914A (en) * | 2018-04-24 | 2018-10-19 | 上柴动力海安有限公司 | A kind of sand processing storing and transporting system of environment-friendly type Vehicle Diesel Engine Block cylinder head casting manufacture |
| CN109093063A (en) * | 2018-08-29 | 2018-12-28 | 禹州市昆仑模具有限公司 | A kind of precoated sand regeneration method |
| CN109954833A (en) * | 2019-04-24 | 2019-07-02 | 十堰长江造型材料有限公司 | Tide mould sand regenerates equipment for after-treatment |
| CN110293206A (en) * | 2019-08-02 | 2019-10-01 | 承德北雁新材料科技有限公司 | Clean sand production technology and system, the method for reclaiming of antiquated sand and system |
| CN110421118A (en) * | 2019-08-05 | 2019-11-08 | 重庆市梁平区宏富贵农机设备制造有限公司 | Automate circulation of sand reutilization system |
| CN110328327B (en) * | 2019-08-08 | 2020-08-28 | 江苏鹏飞集团股份有限公司 | Device for regenerating and casting used sand by heat carrier heating method |
| CN110328327A (en) * | 2019-08-08 | 2019-10-15 | 江苏鹏飞集团股份有限公司 | Heat carrier heating regeneration cast old sand device |
| CN110814276A (en) * | 2019-12-06 | 2020-02-21 | 马鞍山市绿科环保科技有限公司 | Method for cleaning impurities in casting waste sand |
| CN111001756A (en) * | 2020-02-19 | 2020-04-14 | 温州够荷科技有限公司 | Casting sand autosegregation grinds recovery unit |
| CN112157212A (en) * | 2020-10-20 | 2021-01-01 | 含山县承力铸造厂 | Foundry waste sand treatment device |
| CN112264577A (en) * | 2020-10-20 | 2021-01-26 | 秦庭东 | Energy-concerving and environment-protective misce bene device when being favorable to casting mulling |
| CN112403888A (en) * | 2020-10-28 | 2021-02-26 | 滦平县东伟造型材料有限公司 | Drying sand and petroleum fracturing sand composite production line |
| CN112404344A (en) * | 2020-11-06 | 2021-02-26 | 南通大学 | Casting waste sand regeneration device and method based on heat carrier partition heat transfer |
| CN112517838A (en) * | 2020-12-03 | 2021-03-19 | 天津众达精密机械有限公司 | Recycling method of waste foundry sand |
| CN114192740A (en) * | 2021-12-13 | 2022-03-18 | 马鞍山市绿科环保科技有限公司 | Method for regenerating solid waste in moisture-preserving mold sand molding process |
| CN114192740B (en) * | 2021-12-13 | 2023-09-08 | 马鞍山市绿科环保科技有限公司 | Method for regenerating solid waste in moisturizing sand molding process |
| CN114749599A (en) * | 2022-03-31 | 2022-07-15 | 广西兰科资源再生利用有限公司 | Micro-wet method treatment process for waste foundry sand |
| CN114749599B (en) * | 2022-03-31 | 2024-01-30 | 广西兰科资源再生利用有限公司 | Micro-wet treatment process for foundry waste sand |
| CN114905004A (en) * | 2022-05-06 | 2022-08-16 | 霍山县东胜铸造材料有限公司 | Raw sand treatment method and device for precoated sand preparation |
| CN114905004B (en) * | 2022-05-06 | 2024-03-19 | 霍山县东胜铸造材料有限公司 | Raw sand treatment method for precoated sand preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103406490B (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103406490B (en) | Recycling cast waste sand reuse method and equipment | |
| CN102133616B (en) | Reclaiming method of mixed waste sand for casting | |
| CN109641263B (en) | Process for recovering sand and activated clay from foundry waste | |
| Zanetti et al. | Foundry processes: the recovery of green moulding sands for core operations | |
| CN102909315A (en) | Full-automatic reprocessing line of casting-purpose resin sand | |
| CN105478663B (en) | The apparatus and method for reclaiming casting water glass old sand | |
| KR102236075B1 (en) | A Waste Selection System | |
| CN105081213B (en) | Precoated sand recycles production technology | |
| KR100643654B1 (en) | Manufacturing method of aggregate and its apparatus for recycling construction waste material | |
| CN202984575U (en) | Novel reclaimed sand mechanical device | |
| CN105598361A (en) | Device and method for recovering used sodium silicate sand for casting | |
| CN103934411A (en) | PEPSET resin moulding and sand cyclic utilization clean casting technology | |
| CN104759584A (en) | Water glass waste sand regeneration optimizing treatment method and water glass waste sand regeneration optimizing treatment system | |
| CN104162933A (en) | Automatic production line for manufacturing high-performance decorating plates by using recycled materials | |
| CN101780522A (en) | Method for magnetic separation and regeneration of molding clay-resin mixed used sand | |
| CN103934412B (en) | Cast waste sand continuous washing reclamation set | |
| KR101643564B1 (en) | System for regenerating waste mold sand | |
| CN202894207U (en) | Production line for regeneration of resin sand used for full-automatic casting | |
| CN205551379U (en) | Retrieve device of casting with sodium silicate used sand | |
| CN104892982B (en) | The process of rubber and filling plastic reinforcing agent is processed into using the useless sand-lime of casting | |
| CN216912007U (en) | Multistage regeneration processing device of molding sand is retrieved to combined type | |
| CN103011647A (en) | Precipitated mountain flour recovery process | |
| JPH0413438A (en) | Method and system for regenerating used sand at foundry | |
| CN102350483B (en) | Method for regenerating sand used for cold-box by foundry waste sand | |
| CN209810900U (en) | Device for producing pavement bricks by utilizing solid wastes of shoe materials, sponges and chemical fibers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park on the north side of Po Tang casting center Applicant after: Guangxi orchid Resource Recycling Co., Ltd. Address before: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park casting center Applicant before: Guangxi Yulin YC Industrial Chemical Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: GUANGXI YULIN YC INDUSTRIAL CHEMICAL CO., LTD. TO: GUANGXI LANKE RESOURCES RECYCLING CO., LTD. |
|
| ASS | Succession or assignment of patent right |
Owner name: YULIN LANKE CASTING ENVIRONMENTAL PROTECTION EQUIP Free format text: FORMER OWNER: GUANGXI LANKE RESOURCES RECYCLING CO., LTD. Effective date: 20150226 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150226 Address after: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park Business Building Room 501 Applicant after: YULIN LANKE CAST ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD. Address before: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park on the north side of Po Tang casting center Applicant before: Guangxi orchid Resource Recycling Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160804 Address after: 201204, J210, building 4, building 298, lotus road, Shanghai, Pudong New Area Patentee after: Shanghai Shengquan orchid environmental protection equipment Co. Address before: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park Business Building Room 501 Patentee before: YULIN LANKE CAST ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20171129 Address after: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park Business Building Room 501 Patentee after: YULIN LANKE CAST ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD. Address before: 201204, J210, building 4, building 298, lotus road, Shanghai, Pudong New Area Patentee before: Shanghai Shengquan orchid environmental protection equipment Co. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180108 Address after: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park on the north side of Po Tang casting center Patentee after: Guangxi orchid Resource Recycling Co., Ltd. Address before: 537005 the Guangxi Zhuang Autonomous Region Yulin Yuchai Industrial Park Business Building Room 501 Patentee before: YULIN LANKE CAST ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method and equipment for recycling foundry waste sand Effective date of registration: 20220510 Granted publication date: 20151118 Pledgee: Bank of Guilin Co.,Ltd. Yulin Branch Pledgor: GUANGXI LANCO RESOURCES RECYCLING CO.,LTD. Registration number: Y2022450000069 |