CN104759584A - Water glass waste sand regeneration optimizing treatment method and water glass waste sand regeneration optimizing treatment system - Google Patents
Water glass waste sand regeneration optimizing treatment method and water glass waste sand regeneration optimizing treatment system Download PDFInfo
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- CN104759584A CN104759584A CN201510191927.2A CN201510191927A CN104759584A CN 104759584 A CN104759584 A CN 104759584A CN 201510191927 A CN201510191927 A CN 201510191927A CN 104759584 A CN104759584 A CN 104759584A
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- 239000004576 sand Substances 0.000 title claims abstract description 171
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 235000019353 potassium silicate Nutrition 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008929 regeneration Effects 0.000 title claims abstract description 32
- 238000011069 regeneration method Methods 0.000 title claims abstract description 32
- 239000010922 glass waste Substances 0.000 title abstract 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 156
- 230000008569 process Effects 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000002351 wastewater Substances 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 6
- 239000010865 sewage Substances 0.000 claims description 17
- 239000006148 magnetic separator Substances 0.000 claims description 10
- 238000005457 optimization Methods 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000008213 purified water Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 134
- 239000011734 sodium Substances 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 5
- 206010037660 Pyrexia Diseases 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 4
- 230000016615 flocculation Effects 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000003110 molding sand Substances 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007528 sand casting Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a water glass waste sand regeneration optimizing treatment method and a waste glass waste sand regeneration optimizing treatment system. The method comprises the following steps: preparing water glass waste sand, and collecting casting heat treatment waste water, and storing the waste water into a heat treatment water tank; sending the water glass waste sand and hot water into the heat treatment water tank according to a given ratio into a water treatment area I, mixing and stirring the water glass waste and the hot water, and carrying out the primary demolding treatment; sending the mixture into a water treatment area II, adding a chemical releasing agent, and carrying out further demolding treatment; carrying out sand-water separation by utilizing a sand-water separator, sending the waste water into a water treatment area III, and drying and cooling the wet sand; and purifying the waste water, and recycling the purified water. By adopting the cast waste heat water and two-stage regeneration process, the removal rate of Na2O is high; the obtained regenerated sand is good in quality, the roundness of the sand is good, the mud content is low, and the strength of the regenerated sand is high; meanwhile, the waste heat water produced after the casting heat treatment quenching is adequately utilized, the sand regeneration time is shortened, the water consumption is small, and the double-circulation recycling of the casting waste sand and waste water is realized.
Description
Technical field
The present invention relates to molding sand reclaiming technical field, particularly relate to a kind of waterglass antiquated sand renovation process.
Background technology
At present in the production technology of cast steel, ironcasting, common CO
2hardened sodium silicate sand is widely used due to the reason that its technique is simple, cost is low.But the antiquated sand retained strength of this explained hereafter is high, and collapsibility is poor, casting cleaning and antiquated sand regeneration all comparatively difficulty; And the addition of wherein waterglass is usually up to 5% ~ 8%.Binding agent is measured greatly, due to the existence of binding agent, when old sand is reused because discarded waterglass antiquated sand surface is wrapped in, the shortcomings such as show sand bond low, surface quality of continuous castings is poor, and internal flaw is many, hinder reusing of old sand, and the main component of binding agent is Na
2o, after it meets water, reaction generates in alkaline NaOH, thus can cause serious alkaline pollution to comprising around discarded ground farmland.Therefore, discarded used sodium silicate sand must be regenerated, remove the Na on antiquated sand surface as much as possible
2o remaining binder film, makes antiquated sand return to new husky performance, thus replaces fresh sand to recycle, realize energy-conserving and environment-protective, cost-saving synergistic.
Now in the art for the regeneration of waterglass antiquated sand, generally including dry reclamation and wet reclamation, all there is certain deficiency in these two kinds of modes.
The device systems that dry reclamation uses is simple, and invest less, the secondary pollution problem of dust easily solves; But due to CO
2water-glass sand remaining binder is many, retained strength is high, the feature of collapsibility difference, make the membrane removal rate of regenerative process low (being about 10 ~ 20%), and reclaimed sand is of low quality, generally can only be used as floor sand.If carry out heat pre-treatment to used sodium silicate sand before dry reclamation after, although the residue that can improve on the membrane removal rate (increasing to 20 ~ 30%) of dry reclamation, part elimination regeneration sand grains is on the impact of reclaimed sand performance (intensity, up time etc.), but its reclaimed sand obtained and fresh sand still have larger distance, but also energy consumption and the cost of antiquated sand regeneration can be increased significantly.
Wet reclamation is owing to make use of waterglass antiquated sand surface residue feature soluble in water, thus be applicable to the regeneration of waterglass antiquated sand, high, the old husky reclamation rate of its not only membrane removal rate is high, and the reclaimed sand quality obtained also high performance indications such as (again close to fresh sand) adhesion strength, up time, refractoriness, fresh sand can be replaced to make facing sand and system sand uses.But wet reclamation still exists certain defect: compare with dry reclamation, the device systems of wet reclamation is more complicated; The more important thing is, the sewage quantity that wet reclamation produces is large, deals with improperly and very easily causes secondary pollution, and the sewage formed need, through the reuse of sewage disposal Posterior circle or harmless emission, cause reclaimed sand cost too high.
Summary of the invention
A technical problem to be solved by this invention is to provide a kind of waterglass antiquated sand regeneration optimized treatment method, the present invention has fully drawn the advantage of dry method and wet reclamation and has been applied to by the hot water of foundryman's fever process for producing in antiquated sand regeneration cleverly, thus reach and make use of waste and old articles, energy-saving and cost-reducing, cost-saving synergistic, successful.
For solving the problems of the technologies described above, technical scheme of the present invention is: waterglass antiquated sand regeneration optimized treatment method, comprises the steps:
Step one, prepares waterglass antiquated sand, collects the heat treated waste water of casting stored in heat treatment pond;
Step 2, sends into water treatment one district with the hot water in heat treatment pond according to certain ratio by waterglass antiquated sand and carries out mixing and stirring, carry out preliminary demoulding process;
Step 3, sends the mixture of waterglass antiquated sand and hot water into water treatment two district, adds chemical remover, and mixing and stirring, carry out going deep into demoulding process;
Step 4, sends into grit water separator and carries out sand water and be separated by waterglass antiquated sand and the mixture of hot water, the waste water of generation is sent into water treatment three district and carried out wastewater treatment, forms reclaimed sand after the damp sand of generation carries out Drying and cooling process;
Step 5, the waste water in water treatment three district is sent into heat treatment pond and is participated in recycling after purified treatment.
As the preferred technical scheme of one, in described step one, utilize plate-hammer crusher to carry out fragmentation to cast waste sand, utilize magnetic separator to sieve, utilize conveyer to carry the waterglass antiquated sand made.
As the preferred technical scheme of one, in described step 2, waterglass antiquated sand is 1:1 with the weight ratio of hot water in the heat treatment pond selected.
As the preferred technical scheme of one, in described step 3, chemical remover is acid remover.
As the preferred technical scheme of one, in described step 3, sulfuric acid selected by described chemical remover.
As the preferred technical scheme of one, in described step 4, the damp sand produced from grit water separator enters dryer and dries, and carries out dust dedusting by deduster simultaneously; Finally enter sifter and carry out screening dedusting, after cooling, namely obtain reclaimed sand.
Owing to have employed technique scheme, waterglass antiquated sand regeneration optimized treatment method, comprises the steps: step one, prepares waterglass antiquated sand, collects the heat treated waste water of casting stored in heat treatment pond; Step 2, sends into water treatment one district with the hot water in heat treatment pond according to certain ratio by waterglass antiquated sand and carries out mixing and stirring, carry out preliminary demoulding process; Step 3, sends the mixture of waterglass antiquated sand and hot water into water treatment two district, adds chemical remover, and mixing and stirring, carry out going deep into demoulding process; Step 4, sends into grit water separator and carries out sand water and be separated by waterglass antiquated sand and the mixture of hot water, the waste water of generation is sent into water treatment three district and carried out wastewater treatment, forms reclaimed sand after the damp sand of generation carries out Drying and cooling process; Step 5, the waste water in water treatment three district is sent into heat treatment pond and is participated in recycling after purified treatment; Casting spent hot water is adopted to add secondary regenerator technique, Na
2the clearance of O is high; The reclaimed sand quality obtained is good, residual Na
2the content of O is low, and the roundness of sand is good, and clay content is low, and reclaimed sand intensity is high, can directly replace fresh sand to do facing sand or system sand use; The spent hot water produced after simultaneously making full use of casting heat-treatment quenching, shorten the time of sand regeneration, and water consumption is little, thus the Two-way Cycle realizing cast waste sand and waste water reuses.
Another technical problem to be solved by this invention is to provide a kind of waterglass antiquated sand regeneration optimization process system.
For solving the problems of the technologies described above, technical scheme of the present invention is: waterglass antiquated sand regeneration optimization process system, comprise old sand disintegrating apparatus, the discharge end of old sand disintegrating apparatus is disposed with the magnetic separator and the conveyer that old sand are carried out to magnetic sorting and conveying, the discharge end of conveyer is provided with water treatment one district, water treatment one district is provided with agitator, described water treatment one district is connected with water treatment two district, water treatment two district is provided with agitator, water treatment two district is connected with grit water separator, the water side of described grit water separator is connected with water treatment three district, water treatment three district is provided with apparatus for treating sewage, the end that shakes out of described grit water separator is disposed with dryer, sifter and cooling device.
As the preferred technical scheme of one, described old sand disintegrating apparatus comprises plate-hammer crusher.
As the preferred technical scheme of one, between described water treatment one district and described water treatment two district, be also provided with grit water separator.
Waterglass antiquated sand regeneration optimization process system, comprise old sand disintegrating apparatus, the discharge end of old sand disintegrating apparatus is disposed with the magnetic separator and the conveyer that old sand are carried out to magnetic sorting and conveying, the discharge end of conveyer is provided with water treatment one district, water treatment one district is provided with agitator, described water treatment one district is connected with water treatment two district, water treatment two district is provided with agitator, water treatment two district is connected with grit water separator, the water side of described grit water separator is connected with water treatment three district, water treatment three district is provided with apparatus for treating sewage, the end that shakes out of described grit water separator is disposed with dryer, sifter and cooling device, antiquated sand is broken through old sand disintegrating apparatus, through the screening of magnetic separator, water treatment one district is transported to and after mixing according to preset ratio with the spent hot water that foundryman's fever process produces by conveyer, after the process in water treatment one district, be sent to water treatment two district, then obtain reclaimed sand through grit water separator equipment and drying plant, the waste water produced enters water treatment three district and carries out flocculation sediment filtration treatment, the reclaimed sand quality utilizing native system to produce is good, residual Na
2the content of O is low, and the roundness of sand is good, and clay content is low, and reclaimed sand intensity is high, can directly replace fresh sand to do facing sand or system sand use.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the theory diagram of an embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, set forth the present invention further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present invention.Undoubtedly, those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
As depicted in figs. 1 and 2, waterglass antiquated sand regeneration optimized treatment method, comprises the steps:
Step one, prepares waterglass antiquated sand, utilizes plate-hammer crusher to carry out fragmentation to cast waste sand, utilizes magnetic separator to sieve, and utilizes conveyer to carry the waterglass antiquated sand made; Collect the heat treated waste water of casting stored in heat treatment pond;
Step 2, sends into water treatment one district with the hot water in heat treatment pond according to the ratio of 1:1 by waterglass antiquated sand and carries out mixing and stirring, carry out preliminary demoulding process;
Step 3, sends the mixture of waterglass antiquated sand and hot water into water treatment two district, adds chemical remover, and mixing and stirring, carry out going deep into demoulding process; Chemistry remover selects acid remover, such as sulfuric acid;
Step 4, sends into grit water separator and carries out sand water and be separated by waterglass antiquated sand and the mixture of hot water, the waste water of generation is sent into water treatment three district and carried out wastewater treatment, forms reclaimed sand after the damp sand of generation carries out Drying and cooling process; Particularly, the damp sand produced from grit water separator enters dryer and dries, and carries out dust dedusting by deduster simultaneously; Finally enter sifter and carry out screening dedusting, after cooling, namely obtain reclaimed sand.
Step 5, the waste water in water treatment three district is sent into heat treatment pond and is participated in recycling after purified treatment.
Waterglass antiquated sand is broken, feeding water treatment one district and water treatment two district carry out wet reclamation process, separated by regeneration damp sand, obtain reclaimed sand by Drying and cooling by grit water separator, reclaimed sand participates in molding sand casting again, so achieves the sand circulation of cast waste sand; Water in heat treatment pond not only participates in the cooling task of molding sand casting but also participates in the process of wet reclamation, and namely heat treatment pond, water treatment one district, water treatment two district and water treatment three district realize the water circulation that costing wastwater recycles.
Waterglass antiquated sand regeneration optimization process system, comprise old sand disintegrating apparatus, described old sand disintegrating apparatus comprises plate-hammer crusher, the discharge end of old sand disintegrating apparatus is disposed with the magnetic separator and the conveyer that old sand are carried out to magnetic sorting and conveying, the discharge end of conveyer is provided with water treatment one district, water treatment one district is provided with agitator, described water treatment one district is connected with water treatment two district, water treatment two district is provided with agitator, water treatment two district is connected with grit water separator, the water side of described grit water separator is connected with water treatment three district, water treatment three district is provided with apparatus for treating sewage, the end that shakes out of described grit water separator is disposed with dryer, sifter and cooling device.Also can grit water separator be set between described water treatment one district and described water treatment two district; Water treatment one district and water treatment two district are the pond or the container that hold sand aqueous mixtures, and water treatment three district is the pond or the container that hold sewage; The reclaimed sand quality utilizing native system to produce is good, residual Na
2the content of O is low, and the roundness of sand is good, and clay content is low, and reclaimed sand intensity is high, can directly replace fresh sand to do facing sand or system sand use.
Specific works process is as follows: antiquated sand is after plate-hammer crusher is pulverized, carried out successively sieving, carrying by magnetic separator, conveyer, enter water treatment one district, old sand carries out mixing, stirring with the hot water in heat treatment pond by a certain percentage in water treatment one district, enter water treatment two district, add chemical remover and carry out demoulding process, then carry out the separation of sand water by grit water separator, damp sand enters dryer to carry out drying and carries out dust dedusting simultaneously; Final step enters sifter and carries out screening dedusting, is and then cooled by cooling device, cooled old sand and reusable.
Water treatment one district equipment mainly comprises sand water separate pump, agitator etc., antiquated sand, after plate-hammer crusher is pulverized, is carried out successively sieving, carrying by magnetic separator, conveyer, enters water treatment one district, the hot water added according to a certain percentage in heat treatment pond stirs and evenly mixs, enter water treatment two district by sand water separate pump again, water treatment two district repeats aforesaid operations, utilizes grit water separator to be separated with water by sand, sewage enters water treatment three district, and reclaimed sand enters dryer.
The wet reclamation sewage of used sodium silicate sand is neutral muddy suspension sewage, and suspension is mainly tiny small silica dioxide granule, comparatively single (the mainly Na of sewage composition
2sO
4), and the sewage after its general process is aobvious strong basicity sewage, its processing procedure is: the operations such as acid neutralization, flocculation precipitation, filtration clarification.The novel process equipment that the present invention uses takes full advantage of foundryman's fever process spent hot water, accelerate reproduction speed, utilize simultaneously diluted acid not with silicon dioxde reaction, and the principle of first reacting with highly basic, spent hot water and antiquated sand is utilized to regenerate cleverly, really accomplished to make use of waste and old articles, cost-saving synergistic, energy-saving and cost-reducing, simultaneously according to flocculation chemistry and related materials performance, pneumatic principle, flocculation sediment, filtration, clear water are separated three process with mud and concentrate on dexterously in a special metallic object and run.A complete set of technological process is short, treatment and purification efficiency is high, floor space is little, easy and simple to handle, operating cost is lower.And through facts have proved, it has good treatment and purification effect to the sewage of water-glass sand, achieves the zero-emission with sewage that recycles of foundry enterprise water.
Sludge slurry after above-mentioned sewage disposal device sedimentation and filtration, then be made up " mud cake " of sludge treatment device (slip drying press), " mud cake " its main component is sodium sulphate, can as the primary raw material of farmland fertilizer, and " dust " main component obtained after deduster dedusting is SiO
2powder, can be used as the cosolvent that cement produces.
In sum, waterglass antiquated sand regeneration optimization process system of the present invention has the following advantages:
(1) Na
2the clearance of O is high, is more than 95%; And single-stage wet reclamation, Na
2the clearance of O is then 70 ~ 80%, two-stage wet reclamation, Na
2the clearance of O is then 85 ~ 90%;
(2) quality of this washed sand is good, residual Na
2the content of O is below 0.05%, and the roundness of sand is good, and clay content is low, and reclaimed sand intensity is high, and fresh sand can be replaced to do facing sand or system sand use;
(3) speed of this washed sand is fast, and water consumption is little, and makes full use of foundryman's fever process waste water, realizes making use of waste and old articles, cost-saving synergistic, draws reclaimed sand water consumption per ton 1 ~ 2 ton through practice.
(4) cast waste sand is achieved and waste water Two-way Cycle reuses, environmental protection, energy efficiency.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (9)
1. waterglass antiquated sand regeneration optimized treatment method, is characterized in that, comprise the steps:
Step one, prepares waterglass antiquated sand, collects the heat treated waste water of casting stored in heat treatment pond;
Step 2, sends into water treatment one district with the hot water in heat treatment pond according to certain ratio by waterglass antiquated sand and carries out mixing and stirring, carry out preliminary demoulding process;
Step 3, sends the mixture of waterglass antiquated sand and hot water into water treatment two district, adds chemical remover, and mixing and stirring, carry out going deep into demoulding process;
Step 4, sends into grit water separator and carries out sand water and be separated by waterglass antiquated sand and the mixture of hot water, the waste water of generation is sent into water treatment three district and carried out wastewater treatment, forms reclaimed sand after the damp sand of generation carries out Drying and cooling process;
Step 5, the waste water in water treatment three district is sent into heat treatment pond and is participated in recycling after purified treatment.
2. waterglass antiquated sand regeneration optimized treatment method as claimed in claim 1, it is characterized in that, in described step one, utilize plate-hammer crusher to carry out fragmentation to cast waste sand, utilize magnetic separator to sieve, utilize conveyer to carry the waterglass antiquated sand made.
3. waterglass antiquated sand regeneration optimized treatment method as claimed in claim 1, is characterized in that, in described step 2, waterglass antiquated sand is 1:1 with the weight ratio of hot water in the heat treatment pond selected.
4. waterglass antiquated sand regeneration optimized treatment method as claimed in claim 1, it is characterized in that, in described step 3, chemical remover is acid remover.
5. waterglass antiquated sand regeneration optimized treatment method as claimed in claim 1, it is characterized in that, in described step 3, sulfuric acid selected by described chemical remover.
6. the waterglass antiquated sand regeneration optimized treatment method as described in claim as arbitrary in claim 1 to 5, it is characterized in that, in described step 4, the damp sand produced from grit water separator enters dryer and dries, and carries out dust dedusting by deduster simultaneously; Finally enter sifter and carry out screening dedusting, after cooling, namely obtain reclaimed sand.
7. waterglass antiquated sand regeneration optimization process system, it is characterized in that, comprise old sand disintegrating apparatus, the discharge end of old sand disintegrating apparatus is disposed with the magnetic separator and the conveyer that old sand are carried out to magnetic sorting and conveying, the discharge end of conveyer is provided with water treatment one district, water treatment one district is provided with agitator, described water treatment one district is connected with water treatment two district, water treatment two district is provided with agitator, water treatment two district is connected with grit water separator, the water side of described grit water separator is connected with water treatment three district, water treatment three district is provided with apparatus for treating sewage, the end that shakes out of described grit water separator is disposed with dryer, sifter and cooling device.
8. waterglass antiquated sand regeneration optimization process system as claimed in claim 7, it is characterized in that, described old sand disintegrating apparatus comprises plate-hammer crusher.
9. waterglass antiquated sand regenerates optimization process system as claimed in claim 7 or 8, it is characterized in that, is also provided with grit water separator between described water treatment one district and described water treatment two district.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001399A (en) * | 2016-05-26 | 2016-10-12 | 合肥市田源精铸有限公司 | Regeneration treatment method for sodium silicate waste sand |
| CN110640080A (en) * | 2019-09-09 | 2020-01-03 | 武汉纺织大学 | Waste water glass sand wet regeneration method without wastewater discharge |
| CN112570653A (en) * | 2020-11-23 | 2021-03-30 | 优钢新材料科技(湖南)有限公司 | Full-wet sand treatment system for water recycling |
| EP3586995B1 (en) | 2018-06-29 | 2021-04-14 | Nemak, S.A.B. de C.V. | Method for preparing a foundry sand mixture |
| CN113245506A (en) * | 2021-04-25 | 2021-08-13 | 燕山大学 | Method for regenerating sodium silicate sand by using carbide slag |
| CN114043725A (en) * | 2021-10-29 | 2022-02-15 | 康硕(德阳)智能制造有限公司 | 3D printing quartz waste sand treatment process |
| CN117483640A (en) * | 2023-11-17 | 2024-02-02 | 郑州煤机格林材料科技有限公司 | Regeneration treatment process for used sand in sodium silicate sand mold casting |
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| EP3586995B1 (en) | 2018-06-29 | 2021-04-14 | Nemak, S.A.B. de C.V. | Method for preparing a foundry sand mixture |
| US11707777B2 (en) | 2018-06-29 | 2023-07-25 | Nemak, S.A.B. De C.V. | Method for preparing a foundry sand mixture |
| EP3586995B2 (en) † | 2018-06-29 | 2024-04-24 | Nemak, S.A.B. de C.V. | Method for preparing a foundry sand mixture |
| CN110640080A (en) * | 2019-09-09 | 2020-01-03 | 武汉纺织大学 | Waste water glass sand wet regeneration method without wastewater discharge |
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| CN113245506A (en) * | 2021-04-25 | 2021-08-13 | 燕山大学 | Method for regenerating sodium silicate sand by using carbide slag |
| CN113245506B (en) * | 2021-04-25 | 2022-05-10 | 燕山大学 | A kind of method that utilizes carbide slag to regenerate water glass sand |
| CN114043725A (en) * | 2021-10-29 | 2022-02-15 | 康硕(德阳)智能制造有限公司 | 3D printing quartz waste sand treatment process |
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| CN117483640B (en) * | 2023-11-17 | 2024-04-19 | 郑州煤机格林材料科技有限公司 | Regeneration treatment process for used sand in sodium silicate sand mold casting |
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