CN103388161A - Membrane electrode device for refining metal sulfate solution - Google Patents
Membrane electrode device for refining metal sulfate solution Download PDFInfo
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- CN103388161A CN103388161A CN2013103637996A CN201310363799A CN103388161A CN 103388161 A CN103388161 A CN 103388161A CN 2013103637996 A CN2013103637996 A CN 2013103637996A CN 201310363799 A CN201310363799 A CN 201310363799A CN 103388161 A CN103388161 A CN 103388161A
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Abstract
The invention provides a membrane electrode device for refining a metal sulfate solution. The device mainly comprises a cell body, an anode assembly, cathodes, an anode chamber circulation pipeline and a cathode chamber circulation pipeline, wherein the anode assembly consists of meshed plates which are symmetrically distributed at the two sides of an anode plate, an anion exchange membrane and a plate frame, sealing gaskets are sandwiched among the anode plate, the meshed plates, the anion exchange membrane and the plate frame, and the anode plate, the meshed plates, the anion exchange membrane and the plate frame are adhered together by epoxy resin; the anode chamber circulation pipeline consists of a tee joint, a flowmeter, a circulating pump and an anolyte circulation tank; and the cathode chamber circulation pipeline consists of a tee joint, a flowmeter, a circulating pump and a catholyte circulation tank. According to the device, electrolytes can flow cyclically, and the concentration difference polarization is lowered, so that the current efficiency is increased, the unit energy consumption is lowered, and a byproduct, namely sulfuric acid, can be obtained; and the device has the advantages that the preparation is simple, the mounting, dismounting and repair are convenient, the degree of automation is high, and the operation for personnel is facilitated.
Description
Technical field
The invention provides a kind of electrowinning plant of film for the solution of metal sulfates refining, is a kind of refining of metal device that electrochemical reduction is combined with the ion-exchange membrane technique, belongs to the Metal smelting field.
Background technology
At present, the refining of metal process institute employing method in copper, zinc and nickel metal wet method smelting process is electrochemical reducing.The method is to use the acid metal sulfate liquor as electrolytic solution,, at negative electrode generation electrochemical reducting reaction, generates metal simple-substance; At anode generation electro-oxidation reaction.Winning cell major part according to the made refining of metal of electrochemical reducing is all to open wide system, and without the barrier film setting, anode is fixed in Winning cell, and negative electrode is suspended in metallic compound electrolytic solution, electrolyte flow is slow, almost static, around electrode, concentration of electrolyte can descend rapidly, thereby causes concentration polarization, mass-transfer of electrolyte becomes the control step, can cause like this electrode side reaction to increase, reduce current efficiency, increase energy consumption; Electric current is inhomogeneous respectively on battery lead plate, easily causes negative plate to bend, and polar board surface easily forms bur; Also, because electrolytic solution is exposed to outside atmosphere, be vulnerable to the pollution of foreign matter, dirt that carries as koniology, shop personnel etc. easily enters in electrolytic solution, can affect the quality of electrodeposit metals.Metal smelting enterprise, in order to overcome above-mentioned defect, adopts closed electrodeposition groove both at home and abroad, and electrolytic solution is sealed, and stops and contacts with outside atmosphere; But also have such problem: negative electrode dismounting inconvenience, repeatedly dismounting can cause poorly sealed.
The film electrolysis tech is a fast-developing in recent years emerging technology,, due to characteristic functions such as it has separations, concentrates, purifications, is widely used in chlorine industry, sea water desaltination, organic synthesis, water treatment field.The membrane electrolyser preparation is comparatively simple, can form unit operation, be easy to realize auto-control, and be convenient to librarian use, recyclable useful matter, can not produce secondary pollution again.
Summary of the invention
The object of the invention: the shortcoming for the common metal Winning cell that method of refining adopts of above-mentioned solution of metal sulfates provides a kind of anode closed, distribution of current is even, current efficiency is high, the galvanic deposit quality is good and can produces the film electrowinning plant of byproduct sulphuric acid soln.
Concrete technical scheme: the invention provides a kind of electrowinning plant of film for the solution of metal sulfates refining, this film electrowinning plant mainly comprises cell body, anode assemblies, negative electrode, anolyte compartment's circulation line and cathode compartment circulation line, the mesh plate that described anode assemblies is symmetric by the positive plate both sides, anion-exchange membrane, sheet frame form, mesh plate, anion-exchange membrane, sheet frame and positive plate accompany gasket each other, and with epoxy resin, it are bonded together; Described anolyte compartment circulation line, cathode compartment circulation line are connected respectively in the top of sheet frame, cathode compartment and bottom, are marked with dilution heat of sulfuric acid in sheet frame, and cathode compartment is marked with nickel sulfate solution or solution of zinc sulfate; Wherein, described anolyte compartment circulation line is comprised of Y-junction, under meter, recycle pump, anolyte circulating box, and described cathode compartment circulation line is comprised of Y-junction, under meter, recycle pump, catholyte circulating box.
Described anode assemblies is placed in the groove of cell body, and with plastic welding rod, is fixed sealing.
Described cell body is by synthetic glass, or glass reinforced plastic, or polytetrafluoroethylplastic plastic makes, and is shaped as rectangular parallelepiped.
Described sheet frame is UPVC material rectangle hollow structure, and thickness is 8mm ~ 10mm.
Described gasket is 4 third viton, and pros and cons posts double faced adhesive tape.
Described positive plate is titanium-based metal oxide electrode or Pb-Ag alloy electrode.
Described anion-exchange membrane is amino ion-exchange membrane of season.
Described negative electrode is 2, and all with anode assemblies, is set in parallel.
The beneficial effect that the present invention possesses: this film electrowinning plant is applicable to the metal electro-deposition refining process take metal sulfate electrolytic solution as raw material, can obtain the electrodeposit metals quality good, without the environment secondary pollution.Can obtain 5% ~ 8% sulphuric acid soln byproduct in anode assemblies, can be back to other process engineering, for enterprise brings certain economic benefit.Because electrolytic solution is in flow state, distribution of current is more even, alleviates the electrolytic process concentration polarization, reduces the chance of occurrence of electrode side reaction, thereby improves current efficiency, reduces unit consumption of energy.This device preparation is simple, loads and unloads easy to maintenancely, and level of automation is high, is easy to personnel operation.
Description of drawings
A kind of electrowinning plant of film for the solution of metal sulfates refining of Fig. 1 structural representation
The 1-cell body, 2-anode assemblies, 3-negative electrode, 4-anolyte compartment circulation line, 5-cathode compartment circulation line, 6-Y-junction, 7-under meter, 8-recycle pump, 9-anolyte circulating box, 10-catholyte circulating box, 11-cathode compartment.
Fig. 2 anode assemblies sectional view
The A1-positive plate, A2-mesh plate, A3-anion-exchange membrane, A4-sheet frame, A5-gasket.
Embodiment
The present invention is elaborated with Fig. 2 below in conjunction with accompanying drawing 1.
As shown in Figures 1 and 2, a kind of electrowinning plant of film for the solution of metal sulfates refining, mainly comprise cell body 1, anode assemblies 2, negative electrode 3, anolyte compartment's circulation line 4 and cathode compartment circulation line 5, the mesh plate A2 that described anode assemblies 2 is symmetric by positive plate A1 both sides, anion-exchange membrane A3, sheet frame A4 form, mesh plate A2, anion-exchange membrane A3, sheet frame A4 and positive plate A1 accompany gasket A5 each other, and with epoxy resin, it are bonded together; Described anolyte compartment circulation line 4, cathode compartment circulation line 5 are connected respectively in top and the bottom of sheet frame A4, cathode compartment 11, are marked with dilution heat of sulfuric acid in sheet frame A4, and cathode compartment 11 is marked with nickel sulfate solution or solution of zinc sulfate; Wherein, described anolyte compartment circulation line 4 is comprised of Y-junction 6, under meter 7, recycle pump 8, anolyte circulating box 9, and described cathode compartment circulation line 5 is comprised of Y-junction 6, under meter 7, recycle pump 8, catholyte circulating box 10.
Described anode assemblies 2 is placed in the groove of cell body 1, and with plastic welding rod, is fixed sealing.
Described cell body 1 is by synthetic glass, or glass reinforced plastic, or polytetrafluoroethylplastic plastic makes, and is shaped as rectangular parallelepiped.
Described sheet frame A4 is UPVC material rectangle hollow structure, and thickness is 8mm ~ 10mm.
Described gasket A5 is 4 third viton, and pros and cons posts double faced adhesive tape.
Described positive plate A1 is titanium-based metal oxide electrode or Pb-Ag alloy electrode.
Described anion-exchange membrane A3 is amino ion-exchange membrane of season.
Described negative electrode 3 is 2, and all with anode assemblies 2, is set in parallel.
A kind of electrowinning plant of film for solution of metal sulfates refining operational process: before electric power starting, 0.5% ~ 0.8% dilution heat of sulfuric acid, nickel sulfate solution or solution of zinc sulfate are flow into anode assemblies 2, cathode compartment 11 by anolyte compartment's circulation line 4, cathode compartment circulation line 5 correspondences respectively, keep separately constant density cycle operation 1min ~ 3min.The device energising, select suitable processing parameter to carry out galvanic deposit, can collect anode assemblies and produce gas, when anode assemblies 2 dilution heat of sulfuric acid concentration reach 5% ~ 8%, can with sulphuric acid solution extraction out, inject simultaneously pure water simultaneously; The cathode electrodeposition metal simple-substance, until required deposit thickness.
Embodiment 1
Acid leaching liquor in the zinc wet smelting process-20g/L solution of zinc sulfate is as catholyte.Cell body 1 is made by synthetic glass, is shaped as rectangular parallelepiped.Negative electrode 3 is selected zine plate, and positive plate A1 selects Pb-Ag alloy electrode.The mesh plate A2 that anode assemblies 2 is symmetric by positive plate A1 both sides, anion-exchange membrane A3, sheet frame A4 form, mesh plate A2, anion-exchange membrane A3, sheet frame A4 and positive plate A1 accompany gasket A5 each other, and with epoxy resin, it are bonded together.Mesh plate A2 selects band circular hole sheet plastic, and anion-exchange membrane A3 selects amino ion-exchange membrane of season, and sheet frame A4 selects UPVC material rectangle hollow structure, and thickness is 8mm, and gasket A5 selects the 4 third viton sheets of thickness 2mm, and pros and cons posts double faced adhesive tape.The anode assemblies 2 for preparing is put into the groove of cell body 1, and with plastic welding rod, is fixed sealing.0.5% dilution heat of sulfuric acid, 20g/L solution of zinc sulfate are flow in anode assemblies 2, cathode compartment 11 by anolyte compartment's circulation line 4, cathode compartment circulation line 5 correspondences respectively, regulating speed of circulation by under meter 7 is 0.1m/s ~ 0.2m/s, when all solution form loop, the power-on energising, current density is 300A/m
2, electrolysis can obtain fine and close zine plate in 2 days, extracted and obtained 0.5m by anode assemblies 2 simultaneously
35% sulphuric acid soln.
Embodiment 2
Preparation 40g/L nickel sulfate solution is as catholyte.Cell body 1 is made by glass reinforced plastic, is shaped as rectangular parallelepiped.Negative electrode 3 is selected the nickel plate, and positive plate A1 selects the titanium-based metal oxide electrode.The mesh plate A2 that anode assemblies 2 is symmetric by positive plate A1 both sides, anion-exchange membrane A3, sheet frame A4 form, mesh plate A2, anion-exchange membrane A3, sheet frame A4 and positive plate A1 accompany gasket A5 each other, and with epoxy resin, it are bonded together.Mesh plate A2 selects band circular hole sheet plastic, and anion-exchange membrane A3 selects amino ion-exchange membrane of season, and sheet frame A4 selects UPVC material rectangle hollow structure, and thickness is 10mm, and gasket A5 selects the 4 third viton sheets of thickness 2mm, and pros and cons posts double faced adhesive tape.The anode assemblies 2 for preparing is put into the groove of cell body 1, and with plastic welding rod, is fixed sealing.0.8% dilution heat of sulfuric acid, 40g/L nickel sulfate solution are flow in anode assemblies 2, cathode compartment 11 by anolyte compartment's circulation line 4, cathode compartment circulation line 5 correspondences respectively, regulating speed of circulation by under meter 7 is 0.1m/s ~ 0.2m/s, when all solution form loop, the power-on energising, current density is 400A/m
2, electrolysis can obtain fine and close nickel plate in 3 days, extracted and obtained 0.8m by anode assemblies 2 simultaneously
38% sulphuric acid soln.
Claims (8)
1. film electrowinning plant that is used for the solution of metal sulfates refining, it is characterized in that, this film electrowinning plant mainly comprises cell body, anode assemblies, negative electrode, anolyte compartment's circulation line and cathode compartment circulation line, the mesh plate that described anode assemblies is symmetric by the positive plate both sides, anion-exchange membrane, sheet frame form, mesh plate, anion-exchange membrane, sheet frame and positive plate accompany gasket each other, and with epoxy resin, it are bonded together; Described anolyte compartment circulation line, cathode compartment circulation line are connected respectively in the top of sheet frame, cathode compartment and bottom, are marked with dilution heat of sulfuric acid in sheet frame, and cathode compartment is marked with nickel sulfate solution or solution of zinc sulfate; Wherein, described anolyte compartment circulation line is comprised of Y-junction, under meter, recycle pump, anolyte circulating box, and described cathode compartment circulation line is comprised of Y-junction, under meter, recycle pump, catholyte circulating box.
2. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1, it is characterized in that: described anode assemblies is placed in the groove of cell body, and with plastic welding rod, is fixed sealing.
3. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1, it is characterized in that: described cell body is by synthetic glass, or glass reinforced plastic, or polytetrafluoroethylplastic plastic makes, and is shaped as rectangular parallelepiped.
4. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1, it is characterized in that: described sheet frame is UPVC material rectangle hollow structure, and thickness is 8mm ~ 10mm.
5. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1, it is characterized in that: described gasket is 4 third viton, and pros and cons posts double faced adhesive tape.
6. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1, it is characterized in that: described positive plate is titanium-based metal oxide electrode or Pb-Ag alloy electrode.
7. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1 is characterized in that: described anion-exchange membrane is amino ion-exchange membrane of season.
8. a kind of electrowinning plant of film for the solution of metal sulfates refining according to claim 1, it is characterized in that: described negative electrode is 2, and all with anode assemblies, is set in parallel.
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| CN201310363799.6A CN103388161B (en) | 2013-08-20 | 2013-08-20 | A kind of film electrowinning plant for solution of metal sulfates refining |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532293A (en) * | 2014-12-22 | 2015-04-22 | 无锡市瑞思科环保科技有限公司 | Method of purifying nickel from chemical nickel-plating waste liquid and nickel purification device |
| CN105568317A (en) * | 2015-12-31 | 2016-05-11 | 株洲冶炼集团股份有限公司 | High-grade zinc electrolysis preparing method and application thereof |
| CN106277230A (en) * | 2016-09-23 | 2017-01-04 | 新疆融通利和水处理技术有限公司 | A kind of bundle pipes negative electrode and the electrochemistry water-softening equipment isolating anode |
| CN110724964A (en) * | 2019-11-20 | 2020-01-24 | 深圳市臻鼎环保科技有限公司 | Preparation method of nickel sulfamate solution |
| CN114808042A (en) * | 2022-06-07 | 2022-07-29 | 赵坤 | Cation membrane continuous electrolysis device and use method thereof |
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| CN104532293A (en) * | 2014-12-22 | 2015-04-22 | 无锡市瑞思科环保科技有限公司 | Method of purifying nickel from chemical nickel-plating waste liquid and nickel purification device |
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| CN106277230A (en) * | 2016-09-23 | 2017-01-04 | 新疆融通利和水处理技术有限公司 | A kind of bundle pipes negative electrode and the electrochemistry water-softening equipment isolating anode |
| CN110724964A (en) * | 2019-11-20 | 2020-01-24 | 深圳市臻鼎环保科技有限公司 | Preparation method of nickel sulfamate solution |
| CN114808042A (en) * | 2022-06-07 | 2022-07-29 | 赵坤 | Cation membrane continuous electrolysis device and use method thereof |
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