CN103710727A - Application of soluble bromine salt - Google Patents
Application of soluble bromine salt Download PDFInfo
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- CN103710727A CN103710727A CN201310653160.1A CN201310653160A CN103710727A CN 103710727 A CN103710727 A CN 103710727A CN 201310653160 A CN201310653160 A CN 201310653160A CN 103710727 A CN103710727 A CN 103710727A
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- ammonia
- application
- bromine salt
- solution
- soluble bromine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses an application of soluble bromine salt. In the application, soluble bromine salt is employed as an additive for lowering anode potential and applied to a zinc electrowinning process of a zinc ion/ammonia-ammonium solution. Introduction of the soluble bromine salt can lower anode potential, cathode current efficiency can be raised and energy consumption can be lowered effectively.
Description
Technical field
The present invention relates to the application of soluble bromine salt, belong to ammonia process electrowinning zinc field.
Background technology
Steel, iron are smelted and are produced a large amount of blast furnace top gas mud containing Zn or electric arc furnace cigarette ash, and domestic annual by-product goes out approximately 500～7,000,000 tons of gas ash, and containing metal zinc amount is more than 500,000 tons; Slag containing zinc approximately 10% in plumbous smelting process volatilizees and obtains secondary zinc oxide cigarette ash through cigarette ash stove, produces every year 600000 tons of secondary zinc oxide cigarette ashes.These material containing zincs contain a large amount of fluorine, chlorion, adopt existing Production By Sulfuric Acid Process metallic zinc need to adopt the method for alkali cleaning to remove in advance fluorine, chlorion, produce a large amount of waste water; Due to parcel reason, fluorine, chlorion can not remove completely, in acidleach process, enter leach liquor, cause working cycle fluorine, chloride ions accumulated simultaneously.Or adopt the methods such as cuprous chloride, ion-exchange, can not remove in leach liquor below chlorion to 300 mg/litre.The chlorion heavy corrosion anode and cathode lead base body existing in solution, has accelerated the consumption of lead anode; Fluorion in solution causes negative plate corrosion, causes shelling plate difficulty.
Chinese patent ZL99115463.0 discloses a kind of high purity zinc and preparation method thereof, adopts ammonia-ammonium salt solution to leach zinc oxide material, and zinc powder two sections of adverse current displacements, electrodeposition go out high-purity negative electrode cathode zinc.At paper < <, in zinc oxide fume dust ammonia process high purity zinc > >, propose to adopt NH
3-NH
4the Cl aqueous solution leaches the novel process of lead smelting slag ZnO of fuming furnace cigarette ash high purity zinc, and leach liquor adds H
2o
2after purification, except Sb and As, then adopts and adds two sections of adverse currents of zinc powder except Cu, Cd, Pb, power consumption 2700kWh left and right in electrolytic deposition process.
Summary of the invention
The present invention is directed in the electrowinning zinc process that ammonia of the prior art-ammonium salt solution leaches zinc oxide material and have the defect that electric energy consumption is large, object is to provide the application of soluble bromine salt, soluble bromine salt is added in the electrowinning zinc process of zine ion/ammonia-ammonium solution and can reduces anode potential, improve cathode efficiency, effectively reduce energy consumption.
The invention provides the application of soluble bromine salt, this application is as the additive application that reduces anode potential in the electrowinning zinc process of zine ion/ammonia-ammonium solution using soluble bromine salt.
Described soluble bromine salt is added in zine ion/ammonia-ammonium solution by the amount of bromide anion 2～15 grams per liters.
Described soluble bromine salt is mainly water-soluble bromine salt, comprises one or more in brometo de amonio, Sodium Bromide, Potassium Bromide or zinc bromide.
Described ammonia-ammonium solution is ammonia-ammonium chloride solution, ammonia-ammonia sulfate solution or ammonia-sal volatile.
Beneficial effect of the present invention: the present invention is first using soluble bromine salt as the additive application that reduces anode potential in the electrowinning zinc process of zine ion/ammonia-ammonium solution, unexpected discovery, a certain amount of bromide anion adds can effectively reduce anode potential, improve cathode efficiency, reach the object that reduces energy consumption, lot of experiments shows: the bromide anion amount in assurance ammonia-ammonium solution is at 2～15 grams per liters, can make the anode potential of electrowinning zinc reduce by 0.05 volt～1.0 volts, the current efficiency that negative electrode produces zinc improves 0.1%～2%, and direct current consumption reduces 50kWh～900kWh.
Embodiment
Following specific embodiment is intended to further illustrate the present invention, rather than limits the scope of the invention.
Embodiment 1
5 groups of contrast experiments are set, in the solution of zine ion 35 grams per liters, ammonia 1.5mol/L, ammonium chloride 5mol/L, add respectively brometo de amonio, guarantee that the bromide anion quality in each solution is respectively 0 grams per liter, 2.0 grams per liters, 5.0 grams per liters, 10.0 grams per liters and 15 grams per liters, at current density 400A/m
2, 35 ℃ of solution temperatures, anode is graphite, bath voltage, current efficiency and direct current energy consume as shown in table 1.
Table 1 bath voltage, current efficiency and direct current energy consumption
| Add bromide anion amount (g/L) | 0 | 2 | 5 | 10 | 15 |
| Bath voltage (V) | 3.11 | 3.0 | 2.91 | 2.83 | 2.81 |
| Current efficiency (%) | 93.70 | 94.58 | 95.21 | 95.31 | 95.51 |
| Direct current energy consumes (kWh) | 27124 | 2604 | 2509 | 2437 | 2415 |
Embodiment 2
5 groups of contrast experiments are set, in the solution of zine ion 45 grams per liters, ammonia 2.0mol/L, ammonium sulfate 2.5mol/L, add respectively Potassium Bromide, guarantee that the bromide anion quality in each solution is respectively 0 grams per liter, 2.0 grams per liters, 5.0 grams per liters, 10.0 grams per liters and 15 grams per liters, at current density 400A/m
2, 35 ℃ of solution temperatures, anode is graphite, bath voltage, current efficiency and direct current energy consume as shown in table 2.
Table 2 bath voltage, current efficiency and direct current energy consumption
| Add bromide anion amount (g/L) | 0 | 2 | 5 | 10 | 15 |
| Bath voltage (V) | 3.75 | 3.64 | 3.33 | 2.94 | 2.89 |
| Current efficiency (%) | 94.58 | 94.65 | 94.81 | 94.92 | 95.02 |
| Direct current energy consumes (kWh) | 3255 | 3157 | 2833 | 2543 | 2497 |
Embodiment 3
5 groups of contrast experiments are set, in the solution of zine ion 25 grams per liters, ammonia 1.0mol/L, volatile salt 2.5mol/L, add respectively Sodium Bromide, guarantee that the bromide anion quality in each solution is respectively 0 grams per liter, 2.0 grams per liters, 5.0 grams per liters, 10.0 grams per liters and 15 grams per liters, at current density 400A/m
2, 35 ℃ of solution temperatures, anode is titanium base ruthenium oxide, bath voltage, current efficiency and direct current energy consume as shown in table 3.
Table 3 bath voltage, current efficiency and direct current energy consumption
| Add bromide anion amount (g/L) | 0 | 2 | 5 | 10 | 15 |
| Bath voltage (V) | 3.95 | 3.84 | 3.35 | 3.02 | 2.98 |
| Current efficiency (%) | 92.15 | 92.65 | 92.81 | 92.94 | 93.04 |
| Direct current energy consumes (kWh) | 3519 | 3402 | 2963 | 2668 | 2629 |
Claims (4)
1. the application of soluble bromine salt, is characterized in that, using soluble bromine salt as the additive application that reduces anode potential in the electrowinning zinc process of zine ion/ammonia-ammonium solution.
2. application as claimed in claim 1, is characterized in that, described soluble bromine salt is added in zine ion/ammonia-ammonium solution by the amount of bromide anion 2～15 grams per liters.
3. application as claimed in claim 1 or 2, is characterized in that, described soluble bromine salt is one or more in brometo de amonio, Sodium Bromide, Potassium Bromide or zinc bromide.
4. application as claimed in claim 1 or 2, is characterized in that, described ammonia-ammonium solution is ammonia-ammonium chloride solution, ammonia-ammonia sulfate solution or ammonia-sal volatile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653160.1A CN103710727B (en) | 2013-12-05 | 2013-12-05 | The application of soluble bromine salt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653160.1A CN103710727B (en) | 2013-12-05 | 2013-12-05 | The application of soluble bromine salt |
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| Publication Number | Publication Date |
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| CN103710727A true CN103710727A (en) | 2014-04-09 |
| CN103710727B CN103710727B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310653160.1A Expired - Fee Related CN103710727B (en) | 2013-12-05 | 2013-12-05 | The application of soluble bromine salt |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684450A (en) * | 1984-10-05 | 1987-08-04 | Dextec Metallurgical Pty. Ltd. | Production of zinc from ores and concentrates |
| CN1069297A (en) * | 1991-08-02 | 1993-02-24 | 北京矿冶研究总院 | Method for producing zinc powder from zinc-containing material by leaching electrolysis method |
| US5269897A (en) * | 1990-08-01 | 1993-12-14 | Asturiana De Zinc, S.A. | Installation for removing the zinc deposited by electrolysis on aluminium plates |
| CN1093418A (en) * | 1993-04-09 | 1994-10-12 | 广州市新技术应用研究所 | Complex compound electrolysis system zinc |
| CN1571852A (en) * | 2001-09-13 | 2005-01-26 | 英泰克有限公司 | Zinc recovery process |
| CN101157987A (en) * | 2007-11-01 | 2008-04-09 | 中南大学 | Method for preparing electrolytic zinc by processing complex secondary zinc oxide material |
-
2013
- 2013-12-05 CN CN201310653160.1A patent/CN103710727B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684450A (en) * | 1984-10-05 | 1987-08-04 | Dextec Metallurgical Pty. Ltd. | Production of zinc from ores and concentrates |
| US5269897A (en) * | 1990-08-01 | 1993-12-14 | Asturiana De Zinc, S.A. | Installation for removing the zinc deposited by electrolysis on aluminium plates |
| CN1069297A (en) * | 1991-08-02 | 1993-02-24 | 北京矿冶研究总院 | Method for producing zinc powder from zinc-containing material by leaching electrolysis method |
| CN1093418A (en) * | 1993-04-09 | 1994-10-12 | 广州市新技术应用研究所 | Complex compound electrolysis system zinc |
| CN1571852A (en) * | 2001-09-13 | 2005-01-26 | 英泰克有限公司 | Zinc recovery process |
| CN101157987A (en) * | 2007-11-01 | 2008-04-09 | 中南大学 | Method for preparing electrolytic zinc by processing complex secondary zinc oxide material |
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| CN103710727B (en) | 2016-04-06 |
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