CN108893617A - A method of zinc, cobalt are efficiently separated and recycled from purified cobalt slag - Google Patents
A method of zinc, cobalt are efficiently separated and recycled from purified cobalt slag Download PDFInfo
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- CN108893617A CN108893617A CN201810841117.0A CN201810841117A CN108893617A CN 108893617 A CN108893617 A CN 108893617A CN 201810841117 A CN201810841117 A CN 201810841117A CN 108893617 A CN108893617 A CN 108893617A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/24—Obtaining zinc otherwise than by distilling with leaching with alkaline solutions, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0446—Leaching processes with an ammoniacal liquor or with a hydroxide of an alkali or alkaline-earth metal
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- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/008—Wet processes by an alkaline or ammoniacal leaching
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Abstract
A method of zinc, cobalt are efficiently separated and recycled from purified cobalt slag, belong to hydrometallurgy Comprehensive Recovery Technology field；Preparation method：1) sulfuric acid leaching purified cobalt slag is used, leached mud is obtained；2) leachate is neutralized using aqueous slkali；3) zincate solution is neutralized using sulfuric acid, obtains sulfate liquor and zinc hydroxide；High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection simultaneously, obtains the cobalt oxide product of high-purity；The present invention merely with zinc hydroxide and cobalt hydroxide alkali soluble pH difference, realize that zinc, cobalt efficiently separate, the heavy resulting zincate solution of process of alkali and cobalt hydroxide slag pass through the recycling that step processing achieves that zinc, cobalt respectively, and easy to operate, recovery efficiency is high, and gained sulfate liquor, it can return to the heavy process of alkali, reduce consumption and the production cost of raw material, and entire technique is without waste water and gas outlet, comprehensively recovering valuable metal reaches clean manufacturing requirement.
Description
Technical field
The invention belongs to hydrometallurgy Comprehensive Recovery Technology field, in particular to it is a kind of efficiently separated from purified cobalt slag and
The method for recycling zinc, cobalt.
Technical background
Cobalt is a kind of strategy metal resource of support high-tech area development.With the universal and new energy vapour of electronic product
The popularization of vehicle, China have become the third-largest cobalt country of consumption after the U.S. and Japan.But China's reserves only account for global gross reserves
1.1%, external dependence degree is more than 90%；And China's cobalt ore resource is based on zinc, copper, Ni sulphide mine association, average grade
Between 0.03-0.2%.Due to the feature that China's cobalt resource grade is low, associated minerals are in the majority, to depth containing cobalt mineralss smelt to
Directly extracting cobalt therein, not only public good difficulty is big, at high cost, but also is difficult to meet the cobalt consumption demand that China increases rapidly.
Extract from cobaltiferous waste material and zinc, copper, nickel fibers slag is the important channel for producing cobalt.In Zinc hydrometallurgy process,
By oxidizing roasting and sulfuric acid leaching process, cobalt obtains certain enrichment in leachate.For zinc electrolysis, in leachate
Cobalt zinc electrolysis will be adversely affected, and reduce electrolytic efficiency.Therefore, leachate has to pass through before entering electrowinning process
Purified treatment.Wherein, since the standard electric potential difference of cobalt and zinc is smaller, in zinc lixiviating solution purification process, cobalt is most difficult to remove
One of impurity.Currently, purification of leaching liquor mostly uses greatly zinc replacement and the organic matter precipitation method in zinc hydrometallurgy production, zinc powder is set
It changes method and needs a large amount of zinc powders, a large amount of purification slag will be generated, not only also contain containing a large amount of unreacted zinc powders in the purification slag
More high-grade cobalt has high economic value, but since zinc displacement efficiency is low, Zn content will be significantly larger than cobalt in cobalt slag,
It needs further to purify the high efficiency extraction for being just able to achieve cobalt.Zinc in slag would generally be recycled using the method for sulfuric acid leaching, be leached
The metal resources such as copper also rich in, cobalt, cadmium in slag, it will usually by stockpiling or mode for sale in the form of intermediate slag into
Row processing；When using organic compound Cobalt Purification, higher cost and medicament is difficult to reclaiming；In addition, what the method was formed
Purified cobalt slag is also difficult to carry out synthetical recovery processing to metal resource therein.
In view of the less status of metal resource technique in current synthetical recovery purified cobalt slag, this patent discloses a kind of processing
The technique for the purified cobalt slag that zinc replacement generates can effectively realize zinc, the separation of cobalt and zinc, the efficient substep of cobalt recycles.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of side that zinc, cobalt are efficiently separated and recycled from purified cobalt slag
Method.Purified cobalt slag is handled by sulfuric acid leaching, high concentration alkali solution neutralization precipitation, utilizes zinc hydroxide, cobalt hydroxide
The difference of amphoteric compound property realizes that zinc, cobalt efficiently separate, and then mentions zinc by sulfuric acid neutralization, the calcining production of cobalt slag aoxidizes
Cobalt, the final efficient step by step arithmetic for realizing zinc, cobalt in purified cobalt slag.
A method of zinc, cobalt are efficiently separated and recycled from purified cobalt slag, and specific step is as follows：
Step 1, sulfuric acid leaching process：
It is 1.0-1.5mol/L sulfuric acid leaching purified cobalt slag with concentration, 40-70 DEG C of extraction temperature, extraction time 20-
40min, solid-to-liquid ratio (5-10):1, it filters after the reaction was completed, obtains the leaching rich in zinc, the leachate of cobalt and cupric, zinc, cadmium
Slag；
Step 2, leachate neutralization precipitation process：
Leachate is neutralized using aqueous slkali, adjust pH value of solution, filter after the reaction was completed, obtain zincate solution and
High cobalt slag；
Step 3, (a) and (b) is without sequencing：
(a) zincate solution neutralization mentions zinc：Concentration is used to neutralize for 0.5-1.5mol/L sulfuric acid to zincate solution,
PH value of solution is adjusted between 7-12, reaction temperature is 40-90 DEG C, and reaction time 5-120min is filtered after the reaction was completed, obtained
Sulfate liquor and zinc hydroxide；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 200-300 DEG C,
Time is 10-120min, obtains the cobalt oxide product of high-purity.
A kind of above-mentioned method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag, wherein：
In the step 1, purified cobalt slag is in Zinc hydrometallurgy process, using caused by zinc replacement purification leachate
Purification slag containing cobalt, containing unreacted zinc powder and the cobalt displaced, wherein cobalt content is between 0.5-1.5%.
In the step 1, leached mud can return to zinc hydrometallurgy process recycling zinc.
In the step 2, aqueous slkali refers to that mass fraction is the sodium hydroxide solution or ammonium hydroxide of 45-70%.
In the step 2, neutralization-precipitation reaction pH is between 11-15, and reaction temperature is 40-90 DEG C, reaction time 5-
120min。
In the step 3 (a), aqueous slkali is can be obtained by quick lime causticization, concentration in sulfate liquor, is followed in step 2
Ring utilizes.
In the step 3 (a), zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing.
A kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag of the invention is compared with prior art, beneficial
Effect is：
1, the present invention utilizes the alkali soluble pH difference of zinc hydroxide and cobalt hydroxide, using high concentration alkali solution to purified cobalt slag
Sulphuric leachate carry out neutralization precipitation, can efficiently by leachate zinc and cobalt separate.
2, compared to existing zinc, cobalt separating technology, the present invention has that separative efficiency is high, zinc/cobalt can extract respectively, cost
Low, easy-operating advantage.
3, the present invention can make zinc in leachate exist in solution in the form of zincic acid root merely with the aqueous slkali of high concentration,
And cobalt enters slag phase in the form of cobalt hydroxide, to realize that zinc, cobalt efficiently separate.
4, the present invention by alkali sink the resulting zincate solution of process and cobalt hydroxide slag pass through step processing respectively can
Realize the recycling of zinc, cobalt, easy to operate, recovery efficiency is high.For zinc, neutralized by the diluted acid of zincate solution
Obtain the zinc hydroxide product of high-purity, this product can be used as product sale and also can return to zinc hydrometallurgy main process being returned
It receives；For cobalt, high-purity mangesium oxide cobalt product is just can be obtained by calcining in cobalt hydroxide.
5, present invention gained sulfate liquor can return to the heavy process of alkali through causticization, concentration, reduce disappearing for raw material
Consumption and production cost, and entire technique, without waste water and gas outlet, comprehensively recovering valuable metal reaches clean manufacturing requirement.
Detailed description of the invention
Fig. 1 is the process flow chart of the embodiment of the present invention.
Specific embodiment
Present invention process process is as shown in Figure 1, purified cobalt slag obtains leachate and leached mud, soaking by sulfuric acid leaching
High concentration alkali solution is added in liquid out to carry out neutralizing heavy cobalt, obtains zincate solution and high cobalt slag.Zincate solution is by dilute dense
It spends in sulfuric acid and heavy zinc is to recycle zinc, be formed by sulfate liquor by quick lime causticization and obtain gypsum and aqueous slkali, alkali soluble
Liquid returns to leachate neutralization precipitation process by concentration；High cobalt slag obtains cobalt oxide product by calcining.
Embodiment 1：
A method of zinc, cobalt are efficiently separated and recycled from purified cobalt slag, and specific step is as follows：
Step 1, sulfuric acid leaching process：
It is the zinc hydrometallurgy purified cobalt slag that 1mol/L sulfuric acid leaching cobalt content is 0.5% with concentration, 40 DEG C of extraction temperature, soaks
Time 40min out, solid-to-liquid ratio 5:1, after the reaction was completed using filter filter, obtain rich in zinc, the leachate of cobalt and cupric,
The leached mud of zinc, cadmium reaches 90% or more using aas determination zinc, cobalt leaching rate, and leached mud is refined by wet process
Zinc process recycles zinc；
Step 2, leachate neutralization precipitation process：
Mass fraction is used to neutralize for 45% sodium hydroxide solution to leachate, adjustment pH value of solution is 11, reaction
Temperature is 40 DEG C, reaction time 5min, is filtered after the reaction was completed using filter, obtains zincate solution and high cobalt slag, real
Existing zinc, cobalt efficiently separate, and the rate of deposition of cobalt reaches 80%；
Step 3, (a) and (b) is without sequencing：
(a) zincic acid sodium solution neutralization mentions zinc：It uses concentration to neutralize for 0.5mol/L sulfuric acid to zincate solution, adjusts
PH value of solution is 7, and reaction temperature is 40 DEG C, reaction time 5min, is filtered after the reaction was completed using filter, it is molten to obtain sulfate
The rate of deposition of liquid and zinc hydroxide, zinc reaches 70% or more；Alkali soluble can be obtained by quick lime causticization, concentration in sulfate liquor
Liquid recycles in step 2；Zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 200 DEG C, the time
For 10min, the cobalt oxide product of high-purity is obtained.
In the cobalt oxide product obtained through this embodiment in the quality of cobalt and slag cobalt quality ratio, obtain entire technique
Make the rate of recovery of zinc in purified cobalt slag up to 70%, the rate of recovery of cobalt is up to 75% or more.
Embodiment 2：
It is the zinc hydrometallurgy purified cobalt slag that 1mol/L sulfuric acid leaching cobalt content is 1% with concentration, 70 DEG C of extraction temperature, leaches
Time 20min, solid-to-liquid ratio 5:1, after the reaction was completed using filter filter, obtain rich in zinc, the leachate of cobalt and cupric, zinc,
The leached mud of cadmium reaches 90% or more using aas determination zinc, cobalt leaching rate, and leached mud passes through zinc hydrometallurgy work
Sequence recycles zinc；
Step 2, leachate neutralization precipitation process：
Mass fraction is used to neutralize for 55% ammonia spirit to leachate, adjustment pH value of solution is 13, reaction temperature
It is 60 DEG C, reaction time 30min, is filtered after the reaction was completed using filter, obtain zincate solution and high cobalt slag, realizes
Zinc, cobalt efficiently separate, and the rate of deposition of cobalt reaches 85%；
Step 3, (a) and (b) is without sequencing：
(a) zincic acid sodium solution neutralization mentions zinc：It uses concentration to neutralize for 1.0mol/L sulfuric acid to zincate solution, adjusts
PH value of solution is 10, and reaction temperature is 60 DEG C, reaction time 30min, is filtered after the reaction was completed using filter, obtains sulfate
The rate of deposition of solution and zinc hydroxide, zinc reaches 80% or more；Alkali soluble can be obtained by quick lime causticization, concentration in sulfate liquor
Liquid recycles in step 2；Zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 250 DEG C, the time
For 60min, the cobalt oxide product of high-purity is obtained.
In the cobalt oxide product obtained through this embodiment in the quality of cobalt and slag cobalt quality ratio, obtain entire technique
Make the rate of recovery of zinc in purified cobalt slag up to 80%, the rate of recovery of cobalt is up to 85% or more.
Embodiment 3：
It is the zinc hydrometallurgy purified cobalt slag that 1.5mol/L sulfuric acid leaching cobalt content is 1.5% with concentration, 55 DEG C of extraction temperature,
Extraction time 30min, solid-to-liquid ratio 7:1, after the reaction was completed using filter filter, obtain rich in zinc, the leachate of cobalt and cupric,
The leached mud of zinc, cadmium reaches 90% or more using aas determination zinc, cobalt leaching rate, and leached mud is refined by wet process
Zinc process recycles zinc；
Step 2, leachate neutralization precipitation process：
Mass fraction is used to neutralize for 65% sodium hydroxide solution to leachate, adjustment pH value of solution is 15, reaction
Temperature is 70 DEG C, reaction time 60min, is filtered after the reaction was completed using filter, obtains zincate solution and high cobalt slag, real
Existing zinc, cobalt efficiently separate, and the rate of deposition of cobalt reaches 90%；
Step 3, (a) and (b) is without sequencing：
(a) zincic acid sodium solution neutralization mentions zinc：It uses concentration to neutralize for 1.5mol/L sulfuric acid to zincate solution, adjusts
PH value of solution is 11, and reaction temperature is 75 DEG C, reaction time 60min, is filtered after the reaction was completed using filter, obtains sulfate
The rate of deposition of solution and zinc hydroxide, zinc reaches 90% or more；Alkali soluble can be obtained by quick lime causticization, concentration in sulfate liquor
Liquid recycles in step 2；Zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 300 DEG C, the time
For 120min, the cobalt oxide product of high-purity is obtained.
In the cobalt oxide product obtained through this embodiment in the quality of cobalt and slag cobalt quality ratio, obtain entire technique
Make the rate of recovery of zinc in purified cobalt slag up to 85%, the rate of recovery of cobalt is up to 90% or more.
Embodiment 4：
It is the zinc hydrometallurgy purified cobalt slag that 1.3mol/L sulfuric acid leaching cobalt content is 1.5% with concentration, 60 DEG C of extraction temperature,
Extraction time 20min, solid-to-liquid ratio 10:1, after the reaction was completed using filter filter, obtain rich in zinc, cobalt leachate and contain
Copper, zinc, cadmium leached mud, reach 90% or more using aas determination zinc, cobalt leaching rate, leached mud passes through wet process
Zinc metallurgy process recycles zinc；
Step 2, leachate neutralization precipitation process：
Mass fraction is used to neutralize for 70% sodium hydroxide solution to leachate, adjustment pH value of solution is 15, reaction
Temperature is 90 DEG C, reaction time 120min, is filtered after the reaction was completed using filter, obtains zincate solution and high cobalt slag,
Realize that zinc, cobalt efficiently separate, the rate of deposition of cobalt reaches 95%；
Step 3, (a) and (b) is without sequencing：
(a) zincic acid sodium solution neutralization mentions zinc：It uses concentration to neutralize for 1.5mol/L sulfuric acid to zincate solution, adjusts
PH value of solution is 12, and reaction temperature is 90 DEG C, reaction time 120min, is filtered after the reaction was completed using filter, obtains sulfuric acid
The rate of deposition of salting liquid and zinc hydroxide, zinc reaches 95% or more；Alkali can be obtained by quick lime causticization, concentration in sulfate liquor
Solution recycles in step 2；Zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 300 DEG C, the time
For 120min, the cobalt oxide product of high-purity is obtained.
In the cobalt oxide product obtained through this embodiment in the quality of cobalt and slag cobalt quality ratio, obtain entire technique
Make the rate of recovery of zinc in purified cobalt slag up to 90%, the rate of recovery of cobalt is up to 95% or more.
Embodiment 5：
It is the zinc hydrometallurgy purified cobalt slag that 1mol/L sulfuric acid leaching cobalt content is 1.5% with concentration, 50 DEG C of extraction temperature, soaks
Time 40min out, solid-to-liquid ratio 5:1, after the reaction was completed using filter filter, obtain rich in zinc, the leachate of cobalt and cupric,
The leached mud of zinc, cadmium reaches 90% or more using aas determination zinc, cobalt leaching rate, and leached mud is refined by wet process
Zinc process recycles zinc；
Step 2, leachate neutralization precipitation process：
Mass fraction is used to neutralize for 70% ammonia spirit to leachate, adjustment pH value of solution is 14, reaction temperature
It is 90 DEG C, reaction time 120min, is filtered after the reaction was completed using filter, obtain zincate solution and high cobalt slag, realizes
Zinc, cobalt efficiently separate, and the rate of deposition of cobalt reaches 95%；
Step 3, (a) and (b) is without sequencing：
(a) zincic acid sodium solution neutralization mentions zinc：It uses concentration to neutralize for 1.0mol/L sulfuric acid to zincate solution, adjusts
PH value of solution is 11, and reaction temperature is 80 DEG C, reaction time 120min, is filtered after the reaction was completed using filter, obtains sulfuric acid
The rate of deposition of salting liquid and zinc hydroxide, zinc reaches 95% or more；Alkali can be obtained by quick lime causticization, concentration in sulfate liquor
Solution recycles in step 2；Zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 300 DEG C, the time
For 90min, the cobalt oxide product of high-purity is obtained.
In the cobalt oxide product obtained through this embodiment in the quality of cobalt and slag cobalt quality ratio, obtain entire technique
Make the rate of recovery of zinc in purified cobalt slag up to 90%, the rate of recovery of cobalt is up to 90% or more.
Claims (7)
1. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag, which is characterized in that specific step is as follows：
Step 1, sulfuric acid leaching process：
It is 1.0-1.5mol/L sulfuric acid leaching purified cobalt slag with concentration, 40-70 DEG C of extraction temperature, extraction time 20-40min, Gu
Liquor ratio (5-10):1, it filters after the reaction was completed, obtains the leached mud for being rich in zinc, the leachate of cobalt and cupric, zinc, cadmium；
Step 2, leachate neutralization precipitation process：
Leachate is neutralized using aqueous slkali, pH value of solution is adjusted, filters after the reaction was completed, obtain zincate solution and high cobalt
Slag；
Step 3, (a) and (b) is without sequencing：
(a) zincate solution neutralization mentions zinc：It uses concentration to neutralize for the sulfuric acid of 0.5-1.5mol/L to zincate solution, adjusts
Whole pH value of solution is between 7-12, and reaction temperature is 40-90 DEG C, and reaction time 5-120min filters after the reaction was completed, obtains sulphur
Acid salt solution and zinc hydroxide；
(b) calcining of high cobalt slag：High cobalt slag is subjected to calcination processing under nitrogen atmosphere protection, temperature is 200-300 DEG C, the time
For 10-120min, the cobalt oxide product of high-purity is obtained.
2. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag according to claim 1, feature exist
In in the step 1, purified cobalt slag is to contain cobalt using caused by zinc replacement purification leachate in Zinc hydrometallurgy process
Purification slag, containing unreacted zinc powder and the cobalt displaced, wherein cobalt content is between 0.5-1.5%.
3. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag according to claim 1, feature exist
In in the step 1, leached mud can return to zinc hydrometallurgy process recycling zinc.
4. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag according to claim 1, feature exist
In in the step 2, aqueous slkali refers to that mass fraction is the sodium hydroxide solution or ammonium hydroxide of 45-70%.
5. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag according to claim 1, feature exist
In in the step 2, neutralization-precipitation reaction pH is between 11-15, and reaction temperature is 40-90 DEG C, reaction time 5-
120min。
6. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag according to claim 1, feature exist
In in the step 3 (a), aqueous slkali is can be obtained by quick lime causticization, concentration in sulfate liquor, in step 2 circulation benefit
With.
7. a kind of method that zinc, cobalt are efficiently separated and recycled from purified cobalt slag according to claim 1, feature exist
In in the step 3 (a), zinc hydroxide can carry out the recycling of zinc by zinc hydrometallurgy with after zinc calcine ratio mixing.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894577A (en) * | 2019-09-10 | 2020-03-20 | 曾纪斌 | Method for improving leaching rate of zinc-cobalt slag produced by purifying electrolytic zinc solution |
| CN112226623A (en) * | 2020-10-16 | 2021-01-15 | 烟台中科恩吉科创新产业园管理有限公司 | Method for separating and recovering zinc and cobalt in cobalt slag |
| CN113265548A (en) * | 2021-04-21 | 2021-08-17 | 内蒙古兴安铜锌冶炼有限公司 | Enrichment and recovery method of cobalt in cobalt removal agent cobalt slag |
| CN113930616A (en) * | 2021-10-12 | 2022-01-14 | 兰州大学 | Recovery method of Fumei slag in wet metallurgy |
| CN114196826A (en) * | 2020-09-17 | 2022-03-18 | 常宁市华兴冶化实业有限责任公司 | Method for recovering and producing cobalt sulfate heptahydrate from cobalt slag |
| CN114438334A (en) * | 2022-02-10 | 2022-05-06 | 刘云派 | Green cobalt slag recovery process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090249921A1 (en) * | 2008-02-08 | 2009-10-08 | Vale Inco Limited | Process for production of nickel and cobalt using metal hydroxide, metal oxide and/or metal carbonate |
| CN101838736A (en) * | 2010-06-01 | 2010-09-22 | 河南豫光锌业有限公司 | Wet separation method for valuable metals in purified liquid cobalt slags of wet zinc smelting system |
| CN102534235A (en) * | 2012-02-13 | 2012-07-04 | 株洲冶炼集团股份有限公司 | Method for recovering valued metals from cobalt-nickel residue obtained through antimony trioxide purification in zinc hydrometallurgy |
| CN103014346A (en) * | 2012-12-03 | 2013-04-03 | 河池市津泰资源再生有限公司 | Process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag |
| CN106119560A (en) * | 2016-08-04 | 2016-11-16 | 西北矿冶研究院 | Zinc-cobalt separation method |
-
2018
- 2018-07-27 CN CN201810841117.0A patent/CN108893617B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090249921A1 (en) * | 2008-02-08 | 2009-10-08 | Vale Inco Limited | Process for production of nickel and cobalt using metal hydroxide, metal oxide and/or metal carbonate |
| CN101838736A (en) * | 2010-06-01 | 2010-09-22 | 河南豫光锌业有限公司 | Wet separation method for valuable metals in purified liquid cobalt slags of wet zinc smelting system |
| CN102534235A (en) * | 2012-02-13 | 2012-07-04 | 株洲冶炼集团股份有限公司 | Method for recovering valued metals from cobalt-nickel residue obtained through antimony trioxide purification in zinc hydrometallurgy |
| CN103014346A (en) * | 2012-12-03 | 2013-04-03 | 河池市津泰资源再生有限公司 | Process method for separating zinc, iron and cobalt and nickel ore concentrates from cobalt and nickel slag |
| CN106119560A (en) * | 2016-08-04 | 2016-11-16 | 西北矿冶研究院 | Zinc-cobalt separation method |
Non-Patent Citations (1)
| Title |
|---|
| 韩长日等编: "《精细无机化学品制造技术》", 31 August 2008, 科技文献出版社 * |
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| CN110894577A (en) * | 2019-09-10 | 2020-03-20 | 曾纪斌 | Method for improving leaching rate of zinc-cobalt slag produced by purifying electrolytic zinc solution |
| CN110894577B (en) * | 2019-09-10 | 2022-04-01 | 广东利昌新材料有限公司 | Method for improving leaching rate of zinc-cobalt slag produced by purifying electrolytic zinc solution |
| CN114196826A (en) * | 2020-09-17 | 2022-03-18 | 常宁市华兴冶化实业有限责任公司 | Method for recovering and producing cobalt sulfate heptahydrate from cobalt slag |
| CN112226623A (en) * | 2020-10-16 | 2021-01-15 | 烟台中科恩吉科创新产业园管理有限公司 | Method for separating and recovering zinc and cobalt in cobalt slag |
| CN113265548A (en) * | 2021-04-21 | 2021-08-17 | 内蒙古兴安铜锌冶炼有限公司 | Enrichment and recovery method of cobalt in cobalt removal agent cobalt slag |
| CN113930616A (en) * | 2021-10-12 | 2022-01-14 | 兰州大学 | Recovery method of Fumei slag in wet metallurgy |
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| CN114438334B (en) * | 2022-02-10 | 2024-01-16 | 刘云派 | Recovery process of green cobalt slag |
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