CN103710727B - The application of soluble bromine salt - Google Patents

The application of soluble bromine salt Download PDF

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Publication number
CN103710727B
CN103710727B CN201310653160.1A CN201310653160A CN103710727B CN 103710727 B CN103710727 B CN 103710727B CN 201310653160 A CN201310653160 A CN 201310653160A CN 103710727 B CN103710727 B CN 103710727B
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China
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ammonia
bromine salt
solution
application
soluble bromine
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CN201310653160.1A
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CN103710727A (en
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杨声海
夏志美
何静
唐朝波
陈永明
杨建广
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Central South University
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Central South University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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Abstract

The invention discloses the application of soluble bromine salt, this application is as reducing the additive application of anode potential in the electrowinning zinc process of zine ion/ammonia-ammonium solution using soluble bromine salt, the introducing of soluble bromine salt can reduce anode potential, improves cathode efficiency, effectively reduces energy consumption.

Description

The application of soluble bromine salt
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 Zns or electric arc furnace cigarette ash, and domestic annual by-product goes out gas ash about 500 ~ 7,000,000 tons, containing metal zinc amount more than 500,000 tons; Secondary zinc oxide cigarette ash is obtained containing the slag of zinc about 10% through the volatilization of cigarette ash stove, annual generation 600,000 tons of secondary zinc oxide cigarette ashes in plumbous smelting process.These material containing zincs contain a large amount of fluorine, chlorion, adopt existing Production By Sulfuric Acid Process metallic zinc to need to adopt the method for alkali cleaning to remove fluorine, chlorion in advance, produce a large amount of waste water; Simultaneously due to parcel reason, fluorine, chlorion can not remove completely, enter leach liquor in acidleach process, cause working cycle fluorine, chloride ions accumulated.Or the method such as cuprous chloride, ion-exchange of employing, can not to remove in leach liquor below chlorion to 300 mg/litre.The chlorion heavy corrosion anode and cathode lead base body existed in solution, accelerates the consumption of lead anode; Fluorion in solution causes negative plate to corrode, and causes stripping plate difficulty.
Chinese patent ZL99115463.0 discloses a kind of high purity zinc and preparation method thereof, and adopt ammonia-ammonium salt solution to leach zinc oxide material, zinc powder two sections of countercurrent displacement, electrodeposition go out high-purity negative electrode cathode zinc.In paper " by 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 zinc powder two sections of adverse currents except Cu, Cd, Pb, power consumption about 2700kWh in electrolytic deposition process.
Summary of the invention
The present invention is directed in the electrowinning zinc process of ammonia of the prior art-ammonium salt solution leaching zinc oxide material and there is the large defect of electric energy consumption, object is the application providing 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 reducing the additive application of 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 liter.
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 first using soluble bromine salt as reducing the additive application of anode potential in the electrowinning zinc process of zine ion/ammonia-ammonium solution, unexpected discovery, a certain amount of bromide anion adds and effectively can reduce anode potential, improve cathode efficiency, reach the object reducing energy consumption, lot of experiments shows: the bromide anion amount in guarantee ammonia-ammonium solution is at 2 ~ 15 grams per liters, the anode potential of electrowinning zinc can be made to 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, instead of limits the scope of the invention.
Embodiment 1
5 groups of contrast experiments are set, brometo de amonio is added respectively in the solution of zine ion 35 grams per liter, ammonia 1.5mol/L, ammonium chloride 5mol/L, ensure 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, solution temperature 35 DEG C, anode is graphite, and 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, Potassium Bromide is added respectively in the solution of zine ion 45 grams per liter, ammonia 2.0mol/L, ammonium sulfate 2.5mol/L, ensure 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, solution temperature 35 DEG C, anode is graphite, and 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, Sodium Bromide is added respectively in the solution of zine ion 25 grams per liter, ammonia 1.0mol/L, volatile salt 2.5mol/L, ensure 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, solution temperature 35 DEG C, anode is titanium base ruthenium oxide, and 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 reducing the additive application of anode potential in the electrowinning zinc process of zine ion/ammonia-ammonium solution.
2. apply as claimed in claim 1, it 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 liter.
3. apply as claimed in claim 1 or 2, it is characterized in that, described soluble bromine salt is one or more in brometo de amonio, Sodium Bromide, Potassium Bromide or zinc bromide.
4. apply as claimed in claim 1 or 2, it is characterized in that, described ammonia-ammonium solution is ammonia-ammonium chloride solution, ammonia-ammonia sulfate solution or ammonia-sal volatile.
CN201310653160.1A 2013-12-05 2013-12-05 The application of soluble bromine salt Expired - Fee Related CN103710727B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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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