CN105200238A - Method of recovering copper and nickel from plastic plated parts - Google Patents
Method of recovering copper and nickel from plastic plated parts Download PDFInfo
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- CN105200238A CN105200238A CN201510633439.2A CN201510633439A CN105200238A CN 105200238 A CN105200238 A CN 105200238A CN 201510633439 A CN201510633439 A CN 201510633439A CN 105200238 A CN105200238 A CN 105200238A
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Abstract
The invention belongs to the field of metallurgy and relates to a method of recovering copper and nickel from plastic plated parts. The method is mainly characterized in that by means of sulfuric acid leaching and using hydrogen peroxide and air or oxygen as oxidizing agents, a micro-bubble generator is used to blow the air or oxygen into a reactor in a micro-bubble form, leached solution is treated by cyclone electrowinning to produce cathode copper, anode liquor is frozen and crystallized to produce crude nickel sulfate, and the crude nickel sulfate is subjected to the steps such as dissolving, impurity removal by extracting, evaporation concentration, and cooling crystallization to produce high-purity nickel sulfate. The method has the advantages that reaction speed is high, no other impurities are introduced, metal recovery rate is high, solution circulates in a closed loop, no wastewater or waste residue is produced, few auxiliaries are used, energy consumption is low, and low carbon, energy conservation and emission reduction can be achieved.
Description
Technical field
The invention belongs to field of metallurgy, relate to a kind of method reclaiming copper and mickel, particularly relate to a kind of method reclaiming copper and mickel from plastics plating piece.
Background technology
Plastics are because its plasticity-is strong, surface is careful, lower-price characteristic is of many uses.Plastics plating piece refers to utilize electrolysis principle on some metallic surface, plate the plastics of other metal or alloy of skim.Plastics, after electroplated metal layer, give the character of metal, have quality light, can conduct electricity, the feature such as appearance gloss, Surface flat are good, merged the advantage of plastics and metal, be widely used in the industries such as electronics, automobile, motorcycle, five metals, household supplies.
Periodicity along with products such as electronics, household electrical appliances, automobiles is scrapped and is disassembled and defect ware that production plastic process produces, and China produces a large amount of plastic waste plated items every year, simultaneously the plastic waste of the also band electroplated metal layer that import is a large amount of.The recycling of reprocessed plastic(s) and valuable metal, becomes one of important channel making up Domestic Resources deficiency.
The main technique of current process plastic electroplating part has:
(1) nitration mixture takes off depositing process
Sulfuric acid adds nitric acid or sulfuric acid adds hydrochloric acid strip, the molecule destroys of nitration mixture to plastics cause plastic reclaimed after become three grades of feed backs, metal recovery cost is high;
(2) ferric chloride solution withdrawal plating
Plastics not to be destroyed but the later metallic solution of strip reclaims difficulty, add a large amount of iron ions and cause that metal recovery rate is low, secondary pollution environment;
(3) sulfuric acid adds sodium chlorate Oxidation Leaching technique
After adding sodium chlorate, chlorion enters in leach liquor, affects the recovery of follow-up nickel, copper, increases cost recovery;
(4) sulfuric acid adds hydrogen peroxide oxidation extract technology
On plastics without impact, hydrogen peroxide consumption is large, and reaction is slow.
Aforesaid method exists that metal recovery rate is low, cost recovery is high, introduce the problem such as other impurity and secondary pollution environment.Through retrieval, obtain with Publication about Document:
China Patent No.: CN200810219877.4, patent name: a kind of method of recovering copper, nickel and reprocessed plastic(s) from waste electroplating plastics, summary: disclose a kind of method reclaiming copper and mickel from plastic chromium coatings, its principal feature is: after waste electroplating plastics crusher in crushing, adopt nitric acid by the dissolving metal such as surface copper, nickel, obtain clear plastic after insolubles filtration washing, can be used for manipulation of regeneration; And cupric, nickel solution obtain high purity copper sponge after iron replacement; Remaining liquid is through yellow modumite method deironing, and P204 obtains pure nickel nitrate solution after extracting the foreign ion such as copper removal, iron, can production metal nickel plate after electrodeposition process.This patented technology adopts nitric acid to take off plating, and plastics may turn to be yellow, and impact reuses; Use iron replacement copper sponge, added value of product is not high, introduces impurity iron element simultaneously, needs deironing, increases supplementary product onsumption, affects the rate of recovery of nickel, produce a large amount of scum simultaneously; Nickelous nitrate electrodeposition, the environment, anode loss etc. of production scene all have problems.
China Patent No.: CN200910214017.6, patent name: a kind of method reclaiming copper and mickel from plastic chromium coatings, summary: a kind of method reclaiming copper and mickel from plastic chromium coatings, is characterized in that being made up of following steps: 1. take chromium coating, use H
2sO
4and H
2o
2mixing solutions leaches, and after filtration, obtains leach liquor and insolubles; 2. the pH of leach liquor is regulated with ammoniacal liquor, with the extraction agent of 2-hydroxyl-5-dodecylsalicylaldoxime and 2-hydroxyl-5-nonylacetophenone oxime mixture, extraction leach liquor, obtains cupric extraction liquid and nickeliferous raffinate, with sulfuric acid reextraction cupric extraction liquid, obtain cupric anti-stripping agent; 3. electrolysis cupric anti-stripping agent and nickeliferous raffinate, obtain metallic copper and metallic nickel respectively.This patented technology is suitable for the recovery of plastic chromium coatings, reclaims copper by Extraction electrodeposition technique, and more than extraction copper, liquid ammoniacal liquor regulates PH; Wherein use H
2sO
4and H
2o
2mixing solutions leaches, its H
2o
2oxygen emission is few, plastic coating surface metal and oxygen contact area little, oxidation slowly, causes H
2o
2consumption is large, and speed of response is slow; The ammonium radical ion introduced can affect the electrodeposition of nickel, complex process.
Summary of the invention
Goal of the invention of the present invention is the H for existing in prior art
2o
2consumption is large, and speed of response is slow, and recovery gained metal purity is low, crystal formation is imperfect, and the ammonium radical ion of introducing can affect the electrodeposition of nickel, easily causes secondary pollution problems, provides a kind of method reclaiming copper and mickel from plastics plating piece.This technique H
2o
2consumption is little, and speed of response is fast, and do not introduce other impurity, solution closed cycle, metal recovery rate is high.
To achieve these goals, the technical solution used in the present invention is as follows:
From plastics plating piece, reclaim a method for copper and mickel, comprise the operation of acidleach, electrodeposition, leaching agent made by described acidleach operation sulfuric acid and hydrogen peroxide, and blasted in reactive tank with the form of microvesicle by air or oxygen.
Further, the anolyte after electrodeposition is carried out 2 purgings by crystallization, to obtain highly purified single nickel salt product.
Further, after carrying out first time Crystallization Procedure, crystallisate is carried out to weight is molten, extracting and purifying, and then carry out second time Crystallization Procedure.
Further, described sulfuric acid mass percent concentration is 98%, and described hydrogen peroxide mass percent concentration is 27.5%.
Further, select microvesicle generators to blast in reactive tank by air or oxygen, its jet velocity is 20m/s.
Further, described electrodeposition operation is for carry out copper electrodeposition with cyclone electrolytic cell groove after filtering by described leach liquor.
Further, extracting and purifying extraction agent used is P204, and its concentration of volume percent is 10 ~ 20%, and thinner is 260# solvent oil, and its concentration of volume percent is 80 ~ 90%.
Further, described first time crystallization is freezing and crystallizing, and its freezing temp is-15 DEG C to-20 DEG C, and described second time crystallization is evaporating, concentrating and crystallizing.
Further, first time crystallization and second subcrystalline crystalline mother solution are returned leaching operation, to reclaim copper nickel wherein.
In sum, the beneficial effect of hinge structure of the present invention is:
(1) adopt sulfuric acid leaching, on plastics impact little, without phenomenons such as variable colors, reach one-level feed back standard;
(2) oxygenant is hydrogen peroxide and air or oxygen, adds the content of oxygen while not introducing other impurity elements, improves the oxidation rate of metal;
(3) microvesicle generators is adopted to pump in reactor by air or oxygen with microvesicle form, the flowing of accelerated reaction liquid in groove, the air or oxygen of microvesicle form is also more easily attached to metallic surface, metallic surface is fully contacted with oxygenant, thus acceleration burning, improve speed of response.Microvesicle generators is primarily of parts compositions such as gas-liquid separator, recycle pump, hydraulic jet pumps, and its key character adopts the hydraulic jet pump of particular design as emulsification oxygen replenishing equipment.Gas-liquid separator be used for solution enter recycle pump before separated from the gas, to be cavitated damage to avoid recycle pump; Recycle pump is the sole power of this device; Squirt pump is the key part reaching microbubble emulsification oxygenation.During working order, recycle pump, from drawing solution bottom gas-liquid separator, delivers to hydrojet Unit injector through pipeline after supercharging.In squirt pump, solution sprays from nozzle with the speed of more than 20m/s, carries air and enters squirt pump gas-liquid mixed district together.In mixing zone, air and solution strong effect, formed instantaneously containing the oversaturated emulsion mixture of oxygen; Mixed solution enters reactor and copper material generation chemical reaction through baffling dish, reaches quick, from the object of thermosol copper; The solution that air content reduces returns gas-liquid separator, gets back to pump entry, complete groove internal recycle after separator divided gas flow.
(4) leach liquor is through eddy flow electrodeposition operation, does not need regulator solution pH, direct output cathode copper, and flow process is short, copper recovery more than 95%;
(5) solution containing nickel is through a freezing and crystallizing, the nickel of more than 90% can be had to separate out in crystalline form when being refrigerated to-15 to-20 DEG C; Centrifuging, obtains rough nickel sulfate hexahydrate crystal;
(6) rough single nickel salt pure water dissolves, then through P2O4 abstraction impurity removal operation except the impurity element such as de-iron, copper, obtains pure nickel sulfate solution, nickeliferous 85-95g/L;
(7) nickel sulfate solution again through evaporation concentration to 1.5-1.7g/cm
2, control temperature fall off rate, enters cooling twice crystallization, can output purity high, crystal formation is complete, the thick uniform high-purity sulphuric acid nickel crystal of particle, economic value added is high, nickel recovery more than 95%; And the finished product are high-purity sulphuric acid nickel, are a kind of very important Chemicals, are mainly used in the industries such as battery, plating, catalyzer;
(8) gained crystalline mother solution returns leach liquor again, forms solution closed cycle, can not produce secondary pollution, not produce waste water and waste residue, reach the object of low-carbon (LC) and energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the principle flow chart reclaiming copper and mickel from plastics plating piece.
Embodiment
Technical process of the present invention and key points for operation are described below:
(1) broken, washing: the sorting of plastic waste plated item, fragmentation, with tap water and pure water cleaning;
(2) Oxidation Leaching: add the sulfuric acid of 98%, 27.5% hydrogen peroxide, enters reactive tank in by air or oxygen with the form of microvesicle with microvesicle generators, accelerates burning, obtains leach liquor cupric 40-45g/L, sulfuric acid 50-80g/L;
(3) eddy flow electrodeposition: leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove after secondary filter, output cathode copper, and in anolyte, cupric is lower than 2g/L;
(4) primary crystallization: anolyte returns leaching, when nickel is enriched to 40-50g/L, add appropriate 98% sulfuric acid, be refrigerated to-15 DEG C to-20 DEG C, the nickel of more than 90% is separated out in crystalline form, and centrifuging obtains rough single nickel salt;
(5) rough single nickel salt dissolves: dissolved by rough single nickel salt pure water, obtain nickel 85-95g/L;
(6) abstraction impurity removal: with P204 extraction except the impurity element such as de-iron, copper, extraction agent mass concentration is 10%, and thinner 260# solvent oil mass concentration is 90%;
(7) evaporation concentration, secondary crystal: evaporation concentration is to 1.5-1.7g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; High-purity sulphuric acid nickel can be produced again through operations such as centrifuging, oven drying at low temperature, packagings;
(8) closed cycle: crystalline mother solution returns leach liquor again through backflow, forms solution closed cycle.
Below in conjunction with embodiment, invention is described further.
Embodiment 1
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, more slowly add mass concentration and be respectively the sulfuric acid 400kg of 98%, the hydrogen peroxide 50kg of 20.2%, react ON cycle pump and microvesicle generators after 1 hour and blast air and leach 12 hours again, the jet velocity of microvesicle generators is 20m/s.React rear filtration leach liquor, obtain leach liquor 2.0m
3middle cupric 49.5g/L, nickel 24.7g/L, sulfuric acid 78.0g/L.Leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove, output cathode copper 96.2kg, cupric 1.2g/L, nickel 24.7g/L, sulfuric acid 154.0g/L in anolyte after accurate filter filters; Anolyte is refrigerated to-15 DEG C, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 223.2kg, and wherein nickel content is 21.02%; Rough single nickel salt is after pure water dissolves, and with P204 extraction except the impurity element such as de-iron, copper, the volumetric concentration of extraction agent is 10%, and the volumetric concentration of thinner 260# solvent oil is 90%; By the rough single nickel salt evaporation concentration after removal of impurities to 1.52g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
Embodiment 2
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, slowly add mass concentration again and be respectively the sulfuric acid 400kg of 98%, the hydrogen peroxide 50kg of 25.0%, leaching oxygenant is hydrogen peroxide and oxygen, by industrial pure oxygen and microvesicle generators is direct-connected connects, make oxygen blast in groove with microvesicle form, the jet velocity of microvesicle generators is 20m/s.React ON cycle pump and microvesicle generators after 1 hour to blast oxygen and leach 8 hours again.React rear filtration leach liquor, obtain leach liquor 2.0m
3middle cupric 50.1g/L, nickel 24.88g/L, sulfuric acid 76.0g/L.Leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove, output cathode copper 96.4kg in this electrolytic deposition process, cupric 0.98g/L, nickel 24.88g/L, sulfuric acid 152g/L in anolyte after accurate filter filters; Anolyte is refrigerated to-20 DEG C, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 224.2kg, and wherein nickel content is 21.1%; Rough single nickel salt is after pure water dissolves, and with P204 extraction except the impurity element such as de-iron, copper, the volumetric concentration of extraction agent is 20%, and the volumetric concentration of thinner 260# solvent oil is 80%; By the rough single nickel salt evaporation concentration after removal of impurities to 1.65g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
Embodiment 3
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, more slowly add mass concentration and be respectively the sulfuric acid 400kg of 98%, the hydrogen peroxide 50kg of 30.0%, react ON cycle pump and microvesicle generators after 1 hour and blast air and leach 12 hours again, the jet velocity of microvesicle generators is 15m/s.React rear filtration leach liquor, obtain leach liquor 2.0m
3middle cupric 49.5g/L, nickel 24.7g/L, sulfuric acid 78.0g/L.Leach liquor is put into Winning cell and is carried out copper electrodeposition, output cathode copper 93.2kg, cupric 1.7g/L, nickel 24.51g/L, sulfuric acid 156.0g/L in anolyte after accurate filter filters; Anolyte is refrigerated to-15 DEG C, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 216.2kg, and wherein nickel content is 20.92%; Rough single nickel salt is after pure water dissolves, and with P204 extraction except the impurity element such as de-iron, copper, the volumetric concentration of extraction agent is 10%, and the volumetric concentration of thinner 260# solvent oil is 90%; By the rough single nickel salt evaporation concentration after removal of impurities to 1.52g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
Embodiment 4
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, more slowly add mass concentration and be respectively the sulfuric acid 800kg of 45%, the hydrogen peroxide 50kg of 27.5%, react ON cycle pump and microvesicle generators after 1 hour and blast air and leach 12 hours again, the jet velocity of microvesicle generators is 25m/s.React rear filtration leach liquor, obtain leach liquor 2.0m
3middle cupric 29.5g/L, nickel 13.7g/L, sulfuric acid 38.0g/L.Leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove, output cathode copper 66.2kg, cupric 2.2g/L, nickel 14.7g/L, sulfuric acid 104.0g/L in anolyte after accurate filter filters; Anolyte is refrigerated to-15 DEG C, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 148.2kg, and wherein nickel content is 15.02%; Rough single nickel salt is after pure water dissolves, and with P204 extraction except the impurity element such as de-iron, copper, the volumetric concentration of extraction agent is 20%, and the volumetric concentration of thinner 260# solvent oil is 80%; By the rough single nickel salt evaporation concentration after removal of impurities to 1.52g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
Embodiment 5
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, more slowly add mass concentration and be respectively the sulfuric acid 400kg of 98%, the hydrogen peroxide 50kg of 20.2%, react ON cycle pump and microvesicle generators after 1 hour and blast air and leach 12 hours again, the jet velocity of microvesicle generators is 20m/s.React rear filtration leach liquor, obtain leach liquor 2.0m
3middle cupric 49.5g/L, nickel 24.7g/L, sulfuric acid 78.0g/L.Leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove, output cathode copper 96.2kg, cupric 1.2g/L, nickel 24.7g/L, sulfuric acid 154.0g/L in anolyte after accurate filter filters; Anolyte carries out purging by crystallization, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 215.2kg, and wherein nickel content is 21.02%; Rough single nickel salt is after pure water dissolves, and extraction is except the impurity element such as de-iron, copper; By the rough single nickel salt evaporation concentration after removal of impurities to 1.52g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
Comparative example 1
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, more slowly add mass concentration and be respectively the sulfuric acid 400kg of 98%, the hydrogen peroxide 50kg of 27.5%.Reaction leaching filtered leach liquor after 13 hours, obtained leach liquor 2.0m
3middle cupric 30.5g/L, nickel 14.5g/L, sulfuric acid 78.0g/L.Leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove, output cathode copper 57.7kg, cupric 1.0g/L, nickel 14.5g/L, sulfuric acid 154.0g/L in anolyte after accurate filter filters; Anolyte is refrigerated to-15 DEG C, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 130.7kg, and wherein nickel content is 21.02%; Rough single nickel salt is after pure water dissolves, and with P204 extraction except the impurity element such as de-iron, copper, the volumetric concentration of extraction agent is 10%, and the volumetric concentration of thinner 260# solvent oil is 90%; By the rough single nickel salt evaporation concentration after removal of impurities to 1.52g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
To obtain the output cathode copper 96.2kg in embodiment 1, the effect of rough single nickel salt 223.2kg, then under the condition not blasting microvesicle air, leaching 24 hours ability need be reacted and realize.
Comparative example 2
Take the plastics plating piece 1000kg after fragmentation, washing, the content of Qi Zhongtong, nickel is respectively 10%, 5%.1.8m is added in reactive tank
3pure water, more slowly add mass concentration and be respectively the sulfuric acid 400kg of 98%, the hydrogen peroxide 50kg of 27.5%.Reaction leaching filtered leach liquor after 9 hours, obtained leach liquor 2.0m
3middle cupric 25.7g/L, nickel 13.0g/L, sulfuric acid 78.0g/L.Leach liquor carries out copper electrodeposition with cyclone electrolytic cell groove, output cathode copper 43.7kg, cupric 1.0g/L, nickel 13.0g/L, sulfuric acid 154.0g/L in anolyte after accurate filter filters; Anolyte is refrigerated to-15 DEG C, and nickel is separated out with single nickel salt crystallized form, and centrifuging obtains rough single nickel salt 116.5kg, and wherein nickel content is 20.06%; Rough single nickel salt is after pure water dissolves, and with P204 extraction except the impurity element such as de-iron, copper, the volumetric concentration of extraction agent is 10%, and the volumetric concentration of thinner 260# solvent oil is 90%; By the rough single nickel salt evaporation concentration after removal of impurities to 1.52g/cm
2, control temperature fall off rate, crystallisation by cooling, output crystal formation is complete, the thick uniform nickel sulfate hexahydrate crystal of particle; Namely high-purity sulphuric acid nickel is obtained again through operations such as centrifuging, oven drying at low temperature, packagings.
To obtain the output cathode copper 96.4kg in embodiment 2, the effect of rough single nickel salt 224.2kg, then under the condition not blasting microvesicle oxygen, the hydrogen peroxide 105kg of 27.5% is needed to realize.
Claims (9)
1. from plastics plating piece, reclaim a method for copper and mickel, comprise the operation of acidleach, electrodeposition, it is characterized in that: leaching agent made by acidleach operation sulfuric acid and hydrogen peroxide, and air or oxygen is blasted in reactive tank with the form of microvesicle.
2. a kind of method reclaiming copper and mickel from plastics plating piece according to claim 1, is characterized in that: the anolyte after electrodeposition is carried out 2 purgings by crystallization.
3. a kind of method reclaiming copper and mickel from plastics plating piece according to claim 2, is characterized in that: after carrying out first time Crystallization Procedure, crystallisate is carried out to weight is molten, extracting and purifying, and then carries out second time Crystallization Procedure.
4. a kind of method reclaiming copper and mickel from plastics plating piece according to the arbitrary claim of claims 1 to 3, is characterized in that: described sulfuric acid mass percent concentration is 45 ~ 98%, and described hydrogen peroxide mass percent concentration is 20 ~ 30%.
5. a kind of method reclaiming copper and mickel from plastics plating piece according to the arbitrary claim of claims 1 to 3, is characterized in that: select microvesicle generators to blast in reactive tank by air or oxygen, and its jet velocity is 15 ~ 25m/s.
6. a kind of method reclaiming copper and mickel from plastics plating piece according to the arbitrary claim of claims 1 to 3, is characterized in that: described electrodeposition operation is that the leach liquor of described acidleach is carried out copper electrodeposition with cyclone electrolytic cell groove after filtering.
7. a kind of method reclaiming copper and mickel from plastics plating piece according to claim 3, it is characterized in that: extracting and purifying extraction agent used is P204, its concentration of volume percent is 10 ~ 20%, and thinner is 260# solvent oil, and its concentration of volume percent is 80 ~ 90%.
8. a kind of method reclaiming copper and mickel from plastics plating piece according to claim 2, it is characterized in that: described first time crystallization is freezing and crystallizing, its freezing temp is-15 DEG C to-20 DEG C, and described second time crystallization is evaporating, concentrating and crystallizing.
9. a kind of method reclaiming copper and mickel from plastics plating piece according to claim 2,3 or 8, is characterized in that: first time crystallization and second subcrystalline crystalline mother solution are returned leaching operation.
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| CN107058741A (en) * | 2017-03-29 | 2017-08-18 | 温州科锐环境资源利用有限公司 | Useless ABS plastic plated item metals recovery processes and its retracting device |
| CN109850958A (en) * | 2018-12-19 | 2019-06-07 | 浙江科菲科技股份有限公司 | A kind of discarded printed nickel net recovery and treatment method |
| CN109608327A (en) * | 2019-01-04 | 2019-04-12 | 武汉稀源汇冶金科技有限公司 | A kind of method and microbubble oxidation trough of microbubble oxidation production copper acetate |
| CN111439791A (en) * | 2019-01-17 | 2020-07-24 | 江西核工业兴中新材料有限公司 | Method for producing nickel sulfate by gas-liquid emulsification |
| CN110735041A (en) * | 2019-08-28 | 2020-01-31 | 广西银亿高新技术研发有限公司 | process method for leaching insoluble metal waste by cyclic catalytic oxidation acid leaching |
| CN115109927A (en) * | 2021-03-17 | 2022-09-27 | 中国科学院过程工程研究所 | Method for removing manganese and magnesium from laterite-nickel ore hydrochloric acid leaching solution |
| CN113308606A (en) * | 2021-06-04 | 2021-08-27 | 昆明理工大学 | Method for leaching and separating valuable metals from silver-gold-rich selenium steaming slag |
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