CN102505076A - Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid - Google Patents
Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid Download PDFInfo
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Abstract
The invention discloses a method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid, which relates to the technical field of waste resource regeneration and processing. The method comprises the following steps: (a) 1-99 parts of NaOH and 99-1 parts of KOH are mixed to obtain a strong alkaline solution according to a proportion by weight; (b) NaOH/KOH mixed solution is uniformly mixed at a solid-to-liquid ratio of 1:(2-10) to obtain a leaching material; (c) the leaching material is mixed with zinc-air battery waste fluid to obtain zinc-air battery integrated mixed fluid; (d) sulfide is used for purifying and separating iron, copper and lead to obtain a sulfide purified solution; (e) lime regenerated alkali is used to react with the sulfide purified solution to obtain sodium zincate and potassium zincate solution suitable for electrolysis; (f) the sodium zincate and potassium zincate solution suitable for electrolysis obtained in step (e) is electrolyzed to obtain metal zinc powder; and (g) the lean solution is recycled after the electrolysis. The method of the invention sufficiently utilizes waste resources, and does not cause secondary pollution during the whole production process.
Description
Technical field
The present invention relates to a kind of waste material manipulation of regeneration technical field, particularly a kind of high-purity sheet metal zinc powder and battery waste liquor regeneration method from waste material zinc-air battery zinc anode refuse and battery waste liquid, produced.
Background technology
Because Nonrenewable energy resources such as coal, oil signal for help repeatedly, the arriving of back petroleum times makes that people seek, the step of development and utilization new forms of energy is more and more eager, and the development of battery power supply system industry also more and more receives people's attention.The invention of " novel energy of 21 century " zinc-air battery has had goes up century-old history, big with its energy, capacity is big, energy is high, stable operating voltage, long service life, stable performance, nontoxic, safe and reliable, do not have hidden peril of explosion, aboundresources, plurality of advantages such as with low cost and be acknowledged as very outstanding energy storage material.Nineteen ninety-five, Israel's electricity fuel (ElectricFuel) ltd was used for electromobile with zinc-air battery first, made zinc-air battery get into the practicability stage.A plurality of countries such as the U.S. and Germany, France, Sweden, Holland, Finland, Spain and South Africa also all apply zinc-air battery energetically on electromobile.Not long ago the work of a well-known writer of China Beijing Air China head power, Shanghai Powerzinc company made zinc-air battery " come on stage with glittering appearance " again again.
Existing century-old history, the technical maturation of of zinc-air battery.With regard to this battery; Because every day, the usage quantity of zinc powder was bigger, generally each motorbus needed to use the metal zinc of 500-700 kilogram in 14 hours, though the material cost of battery itself is not very high; But the production of the complete recycling of zinc anode after failing to discharge on a large scale; Cause use cost than higher, receive market clout big, be difficult to developed on a large scale.Must set up the supporting technology of corresponding ability industriallization recycling at present, make the real service of " 21 century ideal power source "-zinc-air battery human.
Summary of the invention
The object of the invention is intended to overcome the problem that above technology exists, and a kind of high-purity sheet metal zinc powder and battery waste liquor regeneration method from salvage property zinc-air battery zinc anode refuse and battery waste liquid, produced is provided.
Method of from Battery Zinc anode refuse and battery waste liquid, producing zinc powder and battery liquid of the present invention, its step is following:
A. by the KOH of 1-99 part NaOH and 99-1 part strong alkali solution according to the configuration of quality proportioning; NaOH and KOH total mass concentration are 20-80%; Get the NaOH/KOH mixing solutions, NaOH described herein and the proportioning of KOH are main with KOH generally, but also do not get rid of the ratio raising of NaOH; This is according to the development of zinc-air battery and fixed, and the ratio of the manufacturer of each zinc-air battery also can be different in addition; NaOH and KOH total mass concentration are that the said total mass concentration of 20-80% is NaOH and KOH sum of the two;
B. measure the zinc-air battery refuse earlier: the NaOH/KOH mixing solutions is 1:2-15 with the solid-to-liquid ratio, mixes to such an extent that leach raw material, under the 10-100 degrees celsius, stirs 0.1 ~ 3 h then;
C. step b is prepared leaching raw material mixes with the zinc-air battery waste liquid, gets the integrated mixed solution of zinc-air battery;
D. adopt iron, copper, lead in the integrated mixed solution of zinc-air battery that sulfide purifies and separates step c makes, the sulfide purification solution;
E. adopt the lime regeneration alkali of zinc total amount 1-30% in the solution and the solution reaction of sulfide purifying, obtain being suitable for electrolytic sodium zincate, potassium zincate solution;
F. with electrolytic sodium zincate, potassium zincate solution adopt pure magnesium e step being suitable for of obtaining and be the sheet material of main material, pure titanium with magnesium and be that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode electrolysis with the titanium obtains metal zinc;
G. after electrolysis finished, lean solution recycled, be used for next flow process step b the leaching liquid in stage, whole flow process realizes that alkali leaching-sulfide addings-zinc separates with lead-lime adding target that alkali-electrolysis production metallic zinc-leaching liquid recycles of regenerating.
The described sulfide of steps d comprises sodium sulphite, potassium sulphide, sulfurated lime, Sulfothiorine, the compsn of one or more in the sodium pyrosulfate.
The said sulfide add-on of steps d is calculated according to the 1-10% of zinc amount in the purification solution.
The described metal zinc of step f is the flaky metal zinc of branch more than 96% for metallic zinc content.
Method of from Battery Zinc anode refuse and battery waste liquid, producing high metal zinc and battery liquid of the present invention is electrolysis production branch sheet metal zinc powder and a battery liquid regenerated method in NaOH and KOH mixing solutions.At first adopting NaOH and KOH mass concentration ratio is that the mixing solutions of 1-99% is at 10-100
0Leaching zinc anode after the discharge of pulverizing in the C scope, the back of indication discharge here zinc anode comprises zinc oxide, the metallic zinc of not discharging fully, zinc carbonate etc., its staple is ZnO, Zn, Zn (OH)
2, ZnCO
3, after the leaching, the dissolution rate of zinc is greater than 99.99%; Leaching liquid again with the discharge after cell solution mixes formation mixed solution; The battery liquid here is meant lets slip NaOH or the KOH solution that electricity need to be changed, and staple is mixtinites such as NaOH or KOH solution and zinc hydroxide, potassium zincate, sodium zincate, salt of wormwood, yellow soda ash, the zinc carbonate of 20-60%; Mixed solution is used impurity such as wherein iron of sulfide purifies and separates, copper, lead again, comprises sodium sulphite, potassium sulphide, sulfurated lime, Sulfothiorine, sodium pyrosulfate etc.; Solution after sulfide purifies adopts any lime adding amount regeneration alkali, obtains being suitable for electrolytic sodium zincate, potassium zincate solution; Electrolytic solution adopts pure magnesium and is the sheet material of main material, pure titanium with magnesium and is that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode with the titanium that obtaining metallic zinc content is the sheet metal zinc powder 96% or more.Whole flow process realizes that alkali leaching-sulfide adding-zinc adds the regeneration target that alkali-electrolysis production branch sheet metal zinc-leaching liquid recycles with plumbous separation the-lime.The present invention is based on zinc anode, cell solution after the discharge and be the regenerated using of raw material cyclic regeneration metallic zinc and NaOH, KOH solution, whole process of production does not produce secondary pollution.
The present invention can realize recycle regenerated zinc anode and battery electrolyte completely, and the metal zinc of producing is that branch is flaky, has big, the active strong characteristics of surface-area, than traditional spherical zinc powder discharge stability, and can improve the discharge capacity of 20-30%; The recovery tooling cost of regenerated zinc anode only need adopt new traditional zinc powder to do 1/10 of zinc anode, if the zinc valency improves, then the cost gap is bigger.Suitability for industrialized production of the present invention can guarantee that the running cost of zinc-air battery is stable, impels the industrialized development of zinc-air battery car, and the zinc anode before avoiding simultaneously after the discharge is done the environmental pollution that zinc oxide causes.
Description of drawings
Fig. 1 is discharge back zinc anode waste resource regeneration schema.
Fig. 2 is discharge back refuse battery liquid regeneration schema.
Fig. 3 separates out a zinc flake photo for electrolysis.
Fig. 4 separates out a zinc flake photo for electrolysis.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation, but be not limited to embodiment.
Embodiment 1
A kind of method of from Battery Zinc anode refuse and battery waste liquid, producing high metal zinc and battery liquid the steps include:
A. by the KOH of 1 part of NaOH and the 99 parts strong alkali solution according to the configuration of quality proportioning, NaOH and KOH total mass concentration are 20%, must the NaOH/KOH mixing solutions;
B. measure the zinc-air battery refuse earlier: the NaOH/KOH mixing solutions is 1:2 with the solid-to-liquid ratio, mixes to such an extent that leach raw material, under 10 degrees celsius, stirs 3 h then;
C. step b is prepared leaching raw material mixes with the zinc-air battery waste liquid, gets the integrated mixed solution of zinc-air battery;
D. adopt iron, copper, lead in the integrated mixed solution of zinc-air battery that sulfide purifies and separates step c makes, the sulfide purification solution, sulfide is sodium sulphite, the sulfide add-on is calculated according to 10% of zinc amount in the purification solution;
E. adopt the lime regeneration alkali of zinc total amount 1-30% in the solution and the solution reaction of sulfide purifying, obtain being suitable for electrolytic sodium zincate, potassium zincate solution;
F. with electrolytic sodium zincate, potassium zincate solution adopt pure magnesium e step being suitable for of obtaining and be the sheet material of main material, pure titanium with magnesium and be that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode electrolysis with the titanium; Obtain metal zinc, metal zinc is the flaky metal zinc of branch more than 96% for metallic zinc content;
G. after electrolysis finished, lean solution recycled, and is used for step a or/and the leaching liquid of b.
Embodiment 2
A kind of method of from Battery Zinc anode refuse and battery waste liquid, producing high metal zinc and battery liquid is characterized in that its step is following:
A. by the KOH of 99 parts of NaOH and the 1 part strong alkali solution according to the configuration of quality proportioning, NaOH and KOH total mass concentration are 47.7%, must the NaOH/KOH mixing solutions;
B. measure the zinc-air battery refuse earlier: the NaOH/KOH mixing solutions is 1:10 with the solid-to-liquid ratio, mixes to such an extent that leach raw material, under 100 degrees celsius, stirs 0.1h then;
C. step b is prepared leaching raw material mixes with the zinc-air battery waste liquid, gets the integrated mixed solution of zinc-air battery;
D. adopt iron, copper, lead in the integrated mixed solution of zinc-air battery that sulfide purifies and separates step c makes; Get the sulfide purification solution; Sulfide comprises the compsn of sodium sulphite, sulfurated lime and Sulfothiorine, and the sulfide add-on is calculated according to 1.2% of zinc amount in the purification solution;
E. adopt the lime regeneration alkali of zinc total amount 1-30% in the solution and the solution reaction of sulfide purifying, obtain being suitable for electrolytic sodium zincate, potassium zincate solution;
F. with electrolytic sodium zincate, potassium zincate solution adopt pure magnesium e step being suitable for of obtaining and be the sheet material of main material, pure titanium with magnesium and be that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode electrolysis with the titanium; Obtain metal zinc, metal zinc is the flaky metal zinc of branch more than 96% for metallic zinc content;
G. after electrolysis finished, lean solution recycled, and is used for step a or/and the leaching liquid of b.
Embodiment 3
A kind of method of from Battery Zinc anode refuse and battery waste liquid, producing high metal zinc and battery liquid is characterized in that its step is following:
A. by the KOH of 50 parts of NaOH and the 50 parts strong alkali solution according to the configuration of quality proportioning, NaOH and KOH total mass concentration are 50%, must the NaOH/KOH mixing solutions;
B. measure the zinc-air battery refuse earlier: the NaOH/KOH mixing solutions is 1:5.5 with the solid-to-liquid ratio, mixes to such an extent that leach raw material, under 55 degrees celsius, stirs 2 h then;
C. step b is prepared leaching raw material mixes with the zinc-air battery waste liquid, gets the integrated mixed solution of zinc-air battery;
D. adopt iron, copper, lead in the integrated mixed solution of zinc-air battery that sulfide purifies and separates step c makes, the sulfide purification solution, sulfide is the compsn of potassium sulphide and sodium pyrosulfate, the sulfide add-on is according to 5% calculating of zinc amount in the purification solution;
E. adopt the lime regeneration alkali of zinc total amount 1-30% in the solution and the solution reaction of sulfide purifying, obtain being suitable for electrolytic sodium zincate, potassium zincate solution;
F. with electrolytic sodium zincate, potassium zincate solution adopt pure magnesium e step being suitable for of obtaining and be the sheet material of main material, pure titanium with magnesium and be that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode electrolysis with the titanium; Obtain metal zinc, metal zinc is the flaky metal zinc of branch more than 96% for metallic zinc content;
G. after electrolysis finished, lean solution recycled, and is used for step a or/and the leaching liquid of b.
Embodiment 4
A kind of method of from Battery Zinc anode refuse and battery waste liquid, producing high metal zinc and battery liquid is characterized in that its step is following:
A. by the KOH of 25 parts of NaOH and the 75 parts strong alkali solution according to the configuration of quality proportioning, NaOH and KOH total mass concentration are 63%, must the NaOH/KOH mixing solutions;
B. measure the zinc-air battery refuse earlier: the NaOH/KOH mixing solutions is 1:2-10 with the solid-to-liquid ratio, mixes to such an extent that leach raw material, under 75 degrees celsius, stirs 1.5 h then;
C. step b is prepared leaching raw material mixes with the zinc-air battery waste liquid, gets the integrated mixed solution of zinc-air battery;
D. adopt iron, copper, lead in the integrated mixed solution of zinc-air battery that sulfide purifies and separates step c makes; Get the sulfide purification solution, sulfide comprises sodium sulphite, potassium sulphide; Sulfurated lime; Sulfothiorine, the compsn of sodium pyrosulfate, the sulfide add-on is calculated according to 8% of zinc amount in the purification solution;
E. adopt the lime regeneration alkali of zinc total amount 1-30% in the solution and the solution reaction of sulfide purifying, obtain being suitable for electrolytic sodium zincate, potassium zincate solution;
F. with electrolytic sodium zincate, potassium zincate solution adopt pure magnesium e step being suitable for of obtaining and be the sheet material of main material, pure titanium with magnesium and be that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode electrolysis with the titanium; Obtain metal zinc, metal zinc is the flaky metal zinc of branch more than 96% for metallic zinc content;
G. after electrolysis finished, lean solution recycled, and is used for step a or/and the leaching liquid of b.
Embodiment 5
Adopting the zinc-air battery liquid after the zinc-air battery discharge of certain Battery Company is raw material, and staple is zinc hydroxide and potassium zincate, the salt of wormwood of 38% KOH solution and 50g/L, mixtinite such as zinc carbonate on a small quantity.Be heated to 10-95
0Under the condition of C, stirred at a slow speed 20 minutes, stirring velocity be 80 turn left the right side/minute, add separating agent and continue to stir at a slow speed 30 minutes, filter to isolate impurity such as lead, copper, iron, filter residue can be concentrated and reclaim through cleaning the test nontoxicity.The direct electrolysis of filtrating, purity are that the branch sheet metal zinc more than 99.95% is deposited on the negative electrode.After electrolysis finished, waste electrolyte adds separating agent to be continued to stir at a slow speed 30 minutes, filters to isolate zinc sulphide, and filtrating directly is used to do the electrolytic solution of new zinc-air battery.Alkaline solution and zinc are all accomplished 99% above recycle and reuse in the whole flow process, and environment is not polluted.The negative electrode branch zinc flake that electrolysis goes out directly is pressed into zinc anode and is used on the zinc-air battery once more through filtering.The zinc anode after discharge test reclaims and the discharge effect of electrolytic solution are constant.Zinc anode and electrolytic solution can both be accomplished to reclaim fully through multiple discharge, reprocessing cycle, and discharge effect is constant.
Embodiment 6
The reclaiming recycle of zinc anode.Adopting the zinc anode after the zinc-air battery discharge of certain Battery Company is raw material, and staple comprises the not metallic zinc mixtinite of discharge fully of zinc oxide about 70%, 2% zinc carbonate and 28%.Earlier the zinc anode after the discharge is suitably pulverized, be crushed to below the 0.1-2mm,, also can use NaOH/ zinc anode powder ratio at 10-95 with the KOH solution of 1:5-15
0Under the condition of C, stirred at a slow speed 90 minutes, stirring velocity is 80 the turn left right sides/minute leach; Adding separating agent again continues to stir at a slow speed 30 minutes; Filter to isolate impurity such as lead, copper, iron, filter residue can be concentrated and reclaim through cleaning the test nontoxicity; The direct electrolysis of filtrating, purity are that the branch sheet metal zinc more than 99.95% is deposited on the negative electrode.After electrolysis finishes, the solution next leaching flow process that directly is used to circulate.Alkaline solution and zinc are all accomplished complete recycle and reuse in the whole flow process, and environment is not polluted.The negative electrode branch zinc flake that electrolysis goes out directly is pressed into zinc anode and is used on the zinc-air battery once more through filtering.It is better that the discharge effect of the zinc anode after discharge test reclaims is done anode than primary spherical zinc powder, and discharging rate is higher.Zinc anode can both be accomplished to reclaim fully through multiple discharge, reprocessing cycle, and discharge effect is constant.
Embodiment 7
The reclaiming recycle of the zinc-air battery liquid after the discharge.Adopting the zinc-air battery liquid after the zinc-air battery discharge of certain Battery Company is raw material, and staple is zinc hydroxide and potassium zincate, the salt of wormwood of 38% KOH solution and 50g/L, mixtinite such as zinc carbonate on a small quantity.Be heated to 10-95
0Under the condition of C, stirred at a slow speed 20 minutes, stirring velocity be 80 turn left the right side/minute, add separating agent and continue to stir at a slow speed 30 minutes, filter to isolate impurity such as lead, copper, iron, filter residue can be concentrated and reclaim through cleaning the test nontoxicity.The direct electrolysis of filtrating, purity are that the branch sheet metal zinc more than 99.95% is deposited on the negative electrode.After electrolysis finished, waste electrolyte adds separating agent to be continued to stir at a slow speed 30 minutes, filters to isolate zinc sulphide, and filtrating directly is used to do the electrolytic solution of new zinc-air battery.Alkaline solution and zinc are all accomplished 99% above recycle and reuse in the whole flow process, and environment is not polluted.The negative electrode branch zinc flake that electrolysis goes out directly is pressed into zinc anode and is used on the zinc-air battery once more through filtering.The zinc anode after discharge test reclaims and the discharge effect of electrolytic solution are constant.Zinc anode and electrolytic solution can both be accomplished to reclaim fully through multiple discharge, reprocessing cycle, and discharge effect is constant.
Claims (4)
1. method of from Battery Zinc anode refuse and battery waste liquid, producing zinc powder and battery liquid is characterized in that its step is following:
A. by the KOH of 1-99 part NaOH and the 99-1 part strong alkali solution according to the configuration of quality proportioning, NaOH and KOH total mass concentration are 20-80%, must the NaOH/KOH mixing solutions;
B. measure the zinc-air battery refuse earlier: the NaOH/KOH mixing solutions is 1:2-10 with the solid-to-liquid ratio, mixes to such an extent that leach raw material, under the 10-100 degrees celsius, stirs 0.1 ~ 3 h then;
C. step b is prepared leaching raw material mixes with the zinc-air battery waste liquid, gets the integrated mixed solution of zinc-air battery;
D. adopt iron, copper, lead in the integrated mixed solution of zinc-air battery that sulfide purifies and separates step c makes, the sulfide purification solution;
E. adopt the lime regeneration alkali of zinc total amount 1-30% in the solution and the solution reaction of sulfide purifying, obtain being suitable for electrolytic sodium zincate, potassium zincate solution;
F. with electrolytic sodium zincate, potassium zincate solution adopt pure magnesium e step being suitable for of obtaining and be the sheet material of main material, pure titanium with magnesium and be that the sheet material of main material is done negative electrode with the titanium; 316L stainless steel and be the sheet material of main material, pure titanium with the stainless steel and be that the sheet material of main material is done anode electrolysis with the titanium obtains metal zinc;
G. after electrolysis finished, lean solution recycled, and is used for step a or/and the leaching liquid of b.
2. method of from Battery Zinc anode refuse and battery waste liquid, producing zinc powder and battery liquid according to claim 1 is characterized in that the described sulfide of steps d comprises sodium sulphite; Potassium sulphide; Sulfurated lime, Sulfothiorine, the compsn of one or more in the sodium pyrosulfate.
3. method of from Battery Zinc anode refuse and battery waste liquid, producing zinc powder and battery liquid according to claim 1 is characterized in that, the said sulfide add-on of steps d is calculated according to the 1-10% of zinc amount in the purification solution.
4. method of from Battery Zinc anode refuse and battery waste liquid, producing zinc powder and battery liquid according to claim 1 is characterized in that, the described metal zinc of step f is the flaky metal zinc of branch more than 96% for metallic zinc content.
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| CN2011104549264A CN102505076A (en) | 2011-06-01 | 2011-12-31 | Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid |
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| CN2011104549264A CN102505076A (en) | 2011-06-01 | 2011-12-31 | Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103805776A (en) * | 2014-01-29 | 2014-05-21 | 同济大学 | Method of separating and enriching copper and zinc from copper and zinc containing wastes |
| CN104195559A (en) * | 2014-08-22 | 2014-12-10 | 南开大学 | Method for performing deplating and recovering zinc from zinc layer on steel tube surface |
| CN106575807A (en) * | 2014-04-03 | 2017-04-19 | 斐源有限公司 | Method for regenerating alkaline solutions |
| CN108301021A (en) * | 2017-12-31 | 2018-07-20 | 昆明同越科技开发有限公司 | A method of extracting high-purity plate-like metal zinc from useless galvanized steel plain sheet surface layer |
| CN108842073A (en) * | 2018-06-01 | 2018-11-20 | 青海华信环保科技有限公司 | A kind of method of alkaline process processing zinc cadmium slag |
| CN110820018A (en) * | 2019-11-13 | 2020-02-21 | 刘伟春 | Reduction, regeneration and cyclic utilization method for zinc electrode of zinc-air battery |
| CN112921357A (en) * | 2021-01-01 | 2021-06-08 | 冯建成 | Technology for preparing lead by electrolytic zinc preparation of nonmagnetic stainless steel anode |
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| CN1482263A (en) * | 2002-09-12 | 2004-03-17 | 云南玉溪青年产业（集团）有限公司 | Method for producing high-purity zinc from zinc oxide ore |
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| CN1482263A (en) * | 2002-09-12 | 2004-03-17 | 云南玉溪青年产业（集团）有限公司 | Method for producing high-purity zinc from zinc oxide ore |
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| 王振文等: "锌－空气电池废锌阳极板再生的工艺研究", 《资源再生》, no. 6, 31 December 2010 (2010-12-31), pages 45 - 47 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103805776A (en) * | 2014-01-29 | 2014-05-21 | 同济大学 | Method of separating and enriching copper and zinc from copper and zinc containing wastes |
| CN103805776B (en) * | 2014-01-29 | 2016-05-18 | 同济大学 | A kind of from cupric zinc refuse the method for separation and concentration copper, zinc |
| CN106575807A (en) * | 2014-04-03 | 2017-04-19 | 斐源有限公司 | Method for regenerating alkaline solutions |
| CN104195559A (en) * | 2014-08-22 | 2014-12-10 | 南开大学 | Method for performing deplating and recovering zinc from zinc layer on steel tube surface |
| CN108301021A (en) * | 2017-12-31 | 2018-07-20 | 昆明同越科技开发有限公司 | A method of extracting high-purity plate-like metal zinc from useless galvanized steel plain sheet surface layer |
| CN108842073A (en) * | 2018-06-01 | 2018-11-20 | 青海华信环保科技有限公司 | A kind of method of alkaline process processing zinc cadmium slag |
| CN108842073B (en) * | 2018-06-01 | 2020-11-03 | 青海华信环保科技有限公司 | Method for treating zinc-cadmium slag by alkaline process |
| CN110820018A (en) * | 2019-11-13 | 2020-02-21 | 刘伟春 | Reduction, regeneration and cyclic utilization method for zinc electrode of zinc-air battery |
| CN112921357A (en) * | 2021-01-01 | 2021-06-08 | 冯建成 | Technology for preparing lead by electrolytic zinc preparation of nonmagnetic stainless steel anode |
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Application publication date: 20120620 |