CN103388161B - A kind of film electrowinning plant for solution of metal sulfates refining - Google Patents
A kind of film electrowinning plant for solution of metal sulfates refining Download PDFInfo
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- CN103388161B CN103388161B CN201310363799.6A CN201310363799A CN103388161B CN 103388161 B CN103388161 B CN 103388161B CN 201310363799 A CN201310363799 A CN 201310363799A CN 103388161 B CN103388161 B CN 103388161B
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Abstract
The invention provides a kind of film electrowinning plant for solution of metal sulfates refining, mainly comprise cell body, anode assemblies, negative electrode, anode chamber's circulation line and cathode chamber circulation line, mesh plate, anion-exchange membrane, sheet frame that anode assemblies is symmetric by positive plate both sides form, and they accompany sealing gasket each other, and be bonded together with epoxy resin; Anode chamber's circulation line is made up of three-way connection, flowmeter, circulating pump, anolyte circulating box; Cathode chamber circulation line is made up of three-way connection, flowmeter, circulating pump, catholyte circulating box. The present invention can make circulate electrolyte flow, and reduces concentration polarization, thereby improves current efficiency, reduces specific energy consumption, also can obtain byproduct sulfuric acid; Device preparation is simple, loads and unloads easy to maintenancely, and automaticity is high, is easy to personnel's operation.
Description
Technical field
The invention provides a kind of film electrowinning plant for solution of metal sulfates refining, is a kind of refining of metal device that electrochemical reduction is combined with ion-exchange membrane technology, belongs to metal smelt 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 using acid metal sulfate liquor as electrolyte, at negative electrode generation electrochemical reducting reaction, generates metal simple-substance; At anode generation electro-oxidation reaction. All to open wide system according to the Winning cell major part of the made refining of metal of electrochemical reducing, and without barrier film setting, anode is fixed in Winning cell, negative electrode is suspended in metallic compound electrolyte, electrolyte flow is slow, almost static, electrode around concentration of electrolyte can decline rapidly, thereby causes concentration polarization, mass-transfer of electrolyte becomes 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 minus plate to bend, and polar board surface easily forms bur; Also, because electrolyte is exposed to external environment condition, be vulnerable to the pollution of foreign matter, dirt carrying as koniology, shop personnel etc. easily enters in electrolyte, can affect the quality of electrodeposit metals. The enterprise of metal smelt both at home and abroad, in order to overcome above-mentioned defect, adopts closed electrodeposition groove, and electrolyte is sealed, and stops and contacts with external environment condition; But also there is such problem: negative electrode dismounting inconvenience, repeatedly dismounting can cause poorly sealed.
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, desalinization, organic synthesis, water treatment field. Membrane electrolyser preparation is comparatively simple, can forming unit operate, be easy to realize auto-control, is convenient to librarian use, and recyclable utility, can not produce again secondary pollution.
Summary of the invention
The object of the invention: for the shortcoming of the common metal Winning cell that method of refining adopts of above-mentioned solution of metal sulfates, provide a kind of anode closed, CURRENT DISTRIBUTION is even, current efficiency is high, electro-deposition quality is good and can produces the film electrowinning plant of byproduct sulfuric acid solution.
Concrete technical scheme: the invention provides a kind of film electrowinning plant for solution of metal sulfates refining, this film electrowinning plant mainly comprises cell body, anode assemblies, negative electrode, anode chamber's circulation line and cathode chamber circulation line, mesh plate, anion-exchange membrane, sheet frame that described anode assemblies is symmetric by positive plate both sides form, mesh plate, anion-exchange membrane, sheet frame and positive plate accompany sealing gasket each other, and are bonded together with epoxy resin; Described anode chamber's circulation line, cathode chamber circulation line are connected respectively in the top of sheet frame, cathode chamber and bottom, are marked with dilution heat of sulfuric acid in sheet frame, and cathode chamber is marked with nickel sulfate solution or solution of zinc sulfate; Wherein, described anode chamber's circulation line is made up of three-way connection, flowmeter, circulating pump, anolyte circulating box, and described cathode chamber circulation line is made up of three-way connection, flowmeter, circulating pump, catholyte circulating box.
Described anode assemblies is placed in the groove of cell body, and is fixed sealing with plastic welding rod.
Described cell body is by lucite, or fiberglass, or polytetrafluoroethylplastic plastic makes, and is shaped as cuboid.
Described sheet frame is UPVC material rectangle hollow structure, and thickness is 8mm ~ 10mm.
Described sealing gasket is 4 third fluorubber, and positive and negative 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 amberplex of season.
Described negative electrode is 2, and is all set in parallel with anode assemblies.
The beneficial effect that the present invention possesses: this film electrowinning plant is applicable to the metal electro-deposition refining process taking metal sulfate electrolyte as raw material, can obtain electrodeposit metals quality good, without secondary environmental pollution. Can in anode assemblies, obtain 5% ~ 8% sulfuric acid solution byproduct, can be back to other process engineering, for enterprise brings certain economic benefit. Because electrolyte is in flow regime, CURRENT DISTRIBUTION is more even, alleviates electrolytic process concentration polarization, reduces the chance of occurrence of electrode side reaction, thereby improves current efficiency, reduces specific energy consumption. The preparation of this device is simple, loads and unloads easy to maintenancely, and automaticity is high, is easy to personnel's operation.
Brief description of the drawings
A kind of film electrowinning plant structural representation for solution of metal sulfates refining of Fig. 1
1-cell body, 2-anode assemblies, 3-negative electrode, 4-anode chamber circulation line, 5-cathode chamber circulation line, 6-three-way connection, 7-flowmeter, 8-circulating pump, 9-anolyte circulating box, 10-catholyte circulating box, 11-cathode chamber.
Fig. 2 anode assemblies profile
A1-positive plate, A2-mesh plate, A3-anion-exchange membrane, A4-sheet frame, A5-sealing gasket.
Detailed description of the invention
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 film electrowinning plant for solution of metal sulfates refining, mainly comprise cell body 1, anode assemblies 2, negative electrode 3, anode chamber's circulation line 4 and cathode chamber circulation line 5, mesh plate A2, anion-exchange membrane A3, sheet frame A4 that described anode assemblies 2 is symmetric by positive plate A1 both sides form, mesh plate A2, anion-exchange membrane A3, sheet frame A4 and positive plate A1 accompany sealing gasket A5 each other, and are bonded together with epoxy resin; Described anode chamber's circulation line 4, cathode chamber circulation line 5 are connected respectively in top and the bottom of sheet frame A4, cathode chamber 11, in sheet frame A4, are marked with dilution heat of sulfuric acid, and cathode chamber 11 is marked with nickel sulfate solution or solution of zinc sulfate; Wherein, described anode chamber's circulation line 4 is made up of three-way connection 6, flowmeter 7, circulating pump 8, anolyte circulating box 9, and described cathode chamber circulation line 5 is made up of three-way connection 6, flowmeter 7, circulating pump 8, catholyte circulating box 10.
Described anode assemblies 2 is placed in the groove of cell body 1, and is fixed sealing with plastic welding rod.
Described cell body 1 is by lucite, or fiberglass, or polytetrafluoroethylplastic plastic makes, and is shaped as cuboid.
Described sheet frame A4 is UPVC material rectangle hollow structure, and thickness is 8mm ~ 10mm.
Described sealing gasket A5 is 4 third fluorubber, and positive and negative 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 amberplex of season.
Described negative electrode 3 is 2, and is all set in parallel with anode assemblies 2.
A kind of film electrowinning plant running for solution of metal sulfates refining: 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 chamber 11 by anode chamber's circulation line 4, cathode chamber circulation line 5 correspondences respectively, maintain separately constant density cycle operation 1min ~ 3min. Device energising, selects suitable technological parameter to carry out electro-deposition, can collect anode assemblies and produce gas, in the time that anode assemblies 2 dilution heat of sulfuric acid concentration reach 5% ~ 8%, sulfuric acid solution can be extracted simultaneously, injects pure water simultaneously; Cathode electrodeposition metal simple-substance, until required deposit thickness.
Embodiment 1
In zinc wet smelting process, acid leaching liquor-20g/L solution of zinc sulfate is as catholyte. Cell body 1 is made up of lucite, is shaped as cuboid. Negative electrode 3 is selected zine plate, and positive plate A1 selects Pb-Ag alloy electrode. Mesh plate A2, anion-exchange membrane A3, sheet frame A4 that anode assemblies 2 is symmetric by positive plate A1 both sides form, mesh plate A2, anion-exchange membrane A3, sheet frame A4 and positive plate A1 accompany sealing gasket A5 each other, and are bonded together with epoxy resin. Mesh plate A2 selects band circular hole sheet plastic, and anion-exchange membrane A3 selects amino amberplex of season, and sheet frame A4 selects UPVC material rectangle hollow structure, and thickness is 8mm, and sealing gasket A5 selects the 4 third fluorubber sheets of thickness 2mm, and positive and negative posts double faced adhesive tape. The anode assemblies 2 preparing is put into the groove of cell body 1, and is fixed sealing with plastic welding rod. 0.5% dilution heat of sulfuric acid, 20g/L solution of zinc sulfate are flow in anode assemblies 2, cathode chamber 11 by anode chamber's circulation line 4, cathode chamber circulation line 5 correspondences respectively, regulating circulation rate by flowmeter 7 is 0.1m/s ~ 0.2m/s, when all solution forms loop, power-on energising, current density is 300A/m2, electrolysis can obtain fine and close zine plate in 2 days, is extracted and is obtained 0.5m simultaneously by anode assemblies 235% sulfuric acid solution.
Embodiment 2
Preparation 40g/L nickel sulfate solution is as catholyte. Cell body 1 is made up of fiberglass, is shaped as cuboid. Negative electrode 3 is selected nickel plate, and positive plate A1 selects titanium-based metal oxide electrode. Mesh plate A2, anion-exchange membrane A3, sheet frame A4 that anode assemblies 2 is symmetric by positive plate A1 both sides form, mesh plate A2, anion-exchange membrane A3, sheet frame A4 and positive plate A1 accompany sealing gasket A5 each other, and are bonded together with epoxy resin. Mesh plate A2 selects band circular hole sheet plastic, and anion-exchange membrane A3 selects amino amberplex of season, and sheet frame A4 selects UPVC material rectangle hollow structure, and thickness is 10mm, and sealing gasket A5 selects the 4 third fluorubber sheets of thickness 2mm, and positive and negative posts double faced adhesive tape. The anode assemblies 2 preparing is put into the groove of cell body 1, and is fixed sealing with plastic welding rod. 0.8% dilution heat of sulfuric acid, 40g/L nickel sulfate solution are flow in anode assemblies 2, cathode chamber 11 by anode chamber's circulation line 4, cathode chamber circulation line 5 correspondences respectively, regulating circulation rate by flowmeter 7 is 0.1m/s ~ 0.2m/s, when all solution forms loop, power-on energising, current density is 400A/m2, electrolysis can obtain fine and close nickel plate for 3 days, is extracted and is obtained 0.8m simultaneously by anode assemblies 238% sulfuric acid solution.
Claims (5)
1. the film electrowinning plant for solution of metal sulfates refining, it is characterized in that, this film electrowinning plant mainly comprises cell body, anode assemblies, negative electrode, anode chamber's circulation line and cathode chamber circulation line, amino anion-exchange membrane of mesh plate, season, sheet frame that described anode assemblies is symmetric by positive plate both sides form, the amino anion-exchange membrane of mesh plate, season, sheet frame and positive plate accompany sealing gasket each other, and are bonded together with epoxy resin; Anode assemblies is placed in the groove of cell body, adopts plastic welding rod fixing seal; Described negative electrode is 2, is set in parallel with anode assemblies; Described anode chamber's circulation line, cathode chamber circulation line are connected respectively in the top of sheet frame, cathode chamber and bottom, are marked with dilution heat of sulfuric acid in sheet frame, and cathode chamber is marked with nickel sulfate solution or solution of zinc sulfate; Wherein, described anode chamber's circulation line is made up of three-way connection, flowmeter, circulating pump, anolyte circulating box, and described cathode chamber circulation line is made up of three-way connection, flowmeter, circulating pump, catholyte circulating box.
2. a kind of film electrowinning plant for solution of metal sulfates refining according to claim 1, is characterized in that: described cell body is by lucite, or fiberglass, or polytetrafluoroethylplastic plastic makes, and is shaped as cuboid.
3. a kind of film electrowinning plant for solution of metal sulfates refining according to claim 1, is characterized in that: described sheet frame is UPVC material rectangle hollow structure, and thickness is 8mm ~ 10mm.
4. a kind of film electrowinning plant for solution of metal sulfates refining according to claim 1, is characterized in that: described sealing gasket is 4 third fluorubber, and positive and negative posts double faced adhesive tape.
5. a kind of film electrowinning plant for solution of metal sulfates refining according to claim 1, is characterized in that: described positive plate is titanium-based metal oxide electrode or Pb-Ag alloy electrode.
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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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| 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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| CN103388161B true CN103388161B (en) | 2016-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104532293B (en) * | 2014-12-22 | 2017-06-09 | 无锡市瑞思科环保科技有限公司 | The method of purifying nickel and nickel purifying plant in chemical nickel plating waste solution |
| 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 |
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| US5543031A (en) * | 1994-08-19 | 1996-08-06 | Nippon Mining & Metals Co., Ltd. | Method for recovering indium by electrowinning and apparatus therefor |
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| CN102308029A (en) * | 2009-02-03 | 2012-01-04 | 奥图泰有限公司 | Method of electrowinning a metal and an electrolysis system |
| CN102828205A (en) * | 2011-08-26 | 2012-12-19 | 兰州交通大学 | Novel metal electro-deposition refining technology |
| CN102839396A (en) * | 2012-09-27 | 2012-12-26 | 兰州交通大学 | Membrane electrodeposition cell for metal chloride refinement |
| CN203007441U (en) * | 2012-12-13 | 2013-06-19 | 苏州新区化工节能设备厂 | Water electrolytic bath |
| CN203419995U (en) * | 2013-08-20 | 2014-02-05 | 兰州交通大学 | Membrane electrodeposition device for metal sulfate liquor refining |
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- 2013-08-20 CN CN201310363799.6A patent/CN103388161B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5543031A (en) * | 1994-08-19 | 1996-08-06 | Nippon Mining & Metals Co., Ltd. | Method for recovering indium by electrowinning and apparatus therefor |
| CN2670381Y (en) * | 2003-12-17 | 2005-01-12 | 江西南方稀土高技术股份有限公司 | Anion-exhange membrane multistage continuous electrolytic bath |
| CN201158716Y (en) * | 2007-06-18 | 2008-12-03 | 杨湘清 | Glass fibre reinforced plastic electrolytic manganesium anode chamber |
| CN102308029A (en) * | 2009-02-03 | 2012-01-04 | 奥图泰有限公司 | Method of electrowinning a metal and an electrolysis system |
| CN102828205A (en) * | 2011-08-26 | 2012-12-19 | 兰州交通大学 | Novel metal electro-deposition refining technology |
| CN102839396A (en) * | 2012-09-27 | 2012-12-26 | 兰州交通大学 | Membrane electrodeposition cell for metal chloride refinement |
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Granted publication date: 20160511 Termination date: 20210820 |