CN111286629A - Leaching process for cobalt-containing mineral aggregate - Google Patents
Leaching process for cobalt-containing mineral aggregate Download PDFInfo
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- CN111286629A CN111286629A CN201811494379.0A CN201811494379A CN111286629A CN 111286629 A CN111286629 A CN 111286629A CN 201811494379 A CN201811494379 A CN 201811494379A CN 111286629 A CN111286629 A CN 111286629A
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- leaching
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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
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/0423—Halogenated acids or salts thereof
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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
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a leaching process for cobalt-containing mineral aggregate, which specifically comprises the following steps: putting slurrying water and cobalt-containing mineral aggregate into a slurrying pool, adjusting the pH value of the solution, and fully slurrying to obtain first mixed slurry; continuously leaching and continuously removing iron from the first mixed slurry to obtain second mixed slurry; carrying out continuous filter pressing on the second mixed slurry and carrying out continuous slag washing on the slag after filter pressing; the invention continuously carries out each procedure in the hydrometallurgy process without intermission, thereby improving the production efficiency.
Description
Technical Field
The invention belongs to the technical field of wet metallurgy, and particularly relates to a leaching process for cobalt-containing mineral aggregate.
Background
Leaching process and the process of chemical treatment or organic solvent extraction, impurity separation and metal and its compound extraction of metal mineral material in acid medium or alkali medium water solution; the existing leaching process is discontinuous, and the production efficiency is reduced.
Disclosure of Invention
The invention aims to provide a leaching process for cobalt-containing mineral aggregate, which can continuously carry out all working procedures in the leaching process without interruption, and improves the production efficiency.
The technical scheme adopted by the invention is that,
a leaching process for cobalt-containing mineral aggregate comprises the following specific steps: putting slurrying water and cobalt-containing mineral aggregate into a slurrying pool, adjusting the pH value of the solution, and fully slurrying to obtain first mixed slurry; continuously leaching and continuously removing iron from the first mixed slurry to obtain second mixed slurry; and carrying out continuous filter pressing on the second mixed slurry and carrying out continuous slag washing on the slag subjected to filter pressing.
The present invention is also characterized in that,
and putting the slurrying water and the cobalt-containing mineral aggregate into a slurrying pool, and adjusting the pH value of the solution to be 2.5-3.0.
The specific method for continuous leaching comprises the following steps:
placing concentrated sulfuric acid and the first mixed slurry into a first leaching tank, and controlling the pH value of feed liquid in the first leaching tank to be 1.0-1.5 and the temperature to be 60-65 ℃;
overflowing the overflow liquid in the first leaching tank into a second leaching tank along with the reaction, adding concentrated sulfuric acid and sulfur dioxide into the second leaching tank, and controlling the pH value of the liquid in the second leaching tank to be 1.0-1.5, the temperature to be 60-65 ℃ and the potential to be 320-360 mv;
overflowing the overflow liquid in the second leaching tank to a third leaching tank along with the reaction, adding the sodium metabisulfite into the third leaching tank, and controlling the pH value of the feed liquid in the third leaching tank to be 1.0-1.5, the temperature to be 60-65 ℃ and the potential to be 280-320 mv;
and overflowing the overflow liquid in the third leaching tank into a fourth leaching tank along with the reaction, and adding the sodium chlorate into the fourth leaching tank to finish the continuous leaching of the first mixed slurry.
And continuously removing iron from the continuously leached first mixed slurry after passing through a leaching transfer tank, wherein the temperature in the leaching transfer tank is between 60 and 65 ℃, and the potential is between 380mv and 400 mv.
The specific method for continuously removing the iron comprises the following steps:
placing the mixed solution passing through the leaching transfer tank into a first iron removing tank, adding liquid alkali into the first iron removing tank, and controlling the pH value of the liquid in the first iron removing tank to be 2.5-3.0 and the temperature to be 60-65 ℃;
and (3) overflowing the overflow liquid in the first iron removing tank into a second iron removing tank along with the reaction, adding liquid alkali into the second iron removing tank, and controlling the pH value of the liquid in the second iron removing tank to be 3.0-3.5 and the temperature to be 60-65 ℃ to complete continuous iron removal.
The specific method for continuous filter pressing comprises the following steps:
carrying out primary filter pressing on the second mixed slurry to obtain a post-iron liquid and a post-iron slag; and (3) carrying out filter pressing on the iron post-liquid to obtain a fine filter liquid and fine filter residues, and separating and purifying the fine filter liquid through an extraction process.
The concrete method for continuously washing the slag comprises the following steps:
carrying out first slag washing on the second mixed slurry subjected to continuous filter pressing to obtain first slag washing water and first slag; and returning the first slag washing water to leaching for recycling, performing secondary slag washing on the primary slag, adding concentrated sulfuric acid in the process of slag washing to control the pH value of the first slag to be 1.5-2.0, controlling the temperature to be 70-80 ℃, performing filter pressing to obtain secondary slag and secondary slag washing water, returning the second slag washing water to the primary slag washing, performing third slag washing on the secondary slag, performing filter pressing to obtain third slag washing water and third slag, returning the third slag washing water to the secondary slag washing, performing alkali washing and filter pressing on the third slag to obtain alkali water and waste residue, and completing continuous slag washing.
The invention has the advantages that each procedure in the hydrometallurgy process is continuously carried out without intermission, thereby improving the production efficiency.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a leaching process for cobalt-containing mineral aggregate, which comprises the following specific steps: putting slurrying water and cobalt-containing mineral aggregate into a slurrying pool, adjusting the pH value of the solution, and fully slurrying to obtain first mixed slurry; continuously leaching and continuously removing iron from the first mixed slurry to obtain second mixed slurry; carrying out continuous filter pressing and continuous slag washing on the second mixed slurry to finish hydrometallurgy;
in addition, auxiliary material preparation, auxiliary material addition, material liquid pH value adjustment, continuous leaching, continuous iron removal, continuous filter pressing, material addition amount in continuous slag washing, solution temperature, pH value, potential and the like in the treatment process are all realized by adopting a PLC control system, remote distribution, quantitative filling, remote control discharging of the material liquid can be realized through each process of the PLC control system, the liquid level of each storage tank is automatically controlled, and each working condition is monitored and alarmed in real time.
The preparation process of the slurrying water comprises the following steps: pumping water in a ground pool in a workshop into a trench water collecting tank; pumping water which can be used for dissolving ores in a workshop and an outer workshop into a slurrying water rotary tank according to a set volume ratio; and after being uniformly stirred, the mixture is pumped into a slurrying pool for use.
And putting the auxiliary materials into a slurrying pool and adjusting the pH value of the solution to be 2.5-3.0.
The specific method for continuous leaching comprises the following steps:
placing concentrated sulfuric acid and the first mixed slurry into a first leaching tank, and controlling the pH value of liquid in the first leaching tank to be 1.0-1.5 and the temperature to be 60-65 ℃;
overflowing the overflow liquid in the first leaching tank into a second leaching tank along with the reaction, adding concentrated sulfuric acid and sulfur dioxide into the second leaching tank, and controlling the pH value of the liquid in the second leaching tank to be 1.0-1.5, the temperature to be 60-65 ℃ and the potential to be 320-360 mv;
overflowing the overflow liquid in the second leaching tank to a third leaching tank along with the reaction, adding the sodium metabisulfite into the third leaching tank, and controlling the pH value of the liquid in the third leaching tank to be 1.0-1.5, the temperature to be 60-65 ℃ and the potential to be 280-320 mv;
and overflowing the overflow liquid in the third leaching tank into a fourth leaching tank along with the reaction, and adding the sodium chlorate into the fourth leaching tank to finish the continuous leaching of the first mixed slurry.
And continuously removing iron from the continuously leached first mixed slurry after passing through a leaching transfer tank, wherein the temperature in the leaching transfer tank is between 60 and 65 ℃, and the potential is between 380mv and 400 mv.
The specific method for continuously removing the iron comprises the following steps:
placing the mixed solution passing through the leaching transfer tank into a first iron removing tank, adding liquid alkali into the first iron removing tank, and controlling the pH value of the liquid in the first iron removing tank to be 2.5-3.0 and the temperature to be 60-65 ℃;
and (3) overflowing the overflow liquid in the first iron removing tank into a second iron removing tank along with the reaction, adding liquid alkali into the second iron removing tank, and controlling the pH value of the liquid in the second iron removing tank to be 3.0-3.5 and the temperature to be 60-65 ℃ to complete continuous iron removal.
The specific method for continuous filter pressing comprises the following steps:
carrying out primary filter pressing on the second mixed slurry to obtain a post-iron liquid and a post-iron slag; and (3) carrying out filter pressing on the iron post-liquid to obtain a fine filter liquid and fine filter residues, and separating and purifying the fine filter liquid through an extraction process.
The concrete method for continuously washing the slag comprises the following steps:
carrying out first slag washing on the second mixed slurry subjected to continuous filter pressing to obtain first slag washing water and first slag; and returning the first slag washing water to leaching for recycling, performing secondary slag washing on the primary slag, adding concentrated sulfuric acid in the process of slag washing to control the pH value of the first slag to be 1.5-2.0, controlling the temperature to be 70-80 ℃, performing filter pressing to obtain secondary slag and secondary slag washing water, returning the second slag washing water to the primary slag washing, performing third slag washing on the secondary slag, performing filter pressing to obtain third slag washing water and third slag, returning the third slag washing water to the secondary slag washing, performing alkali washing and filter pressing on the third slag to obtain alkali water and waste residue, and completing continuous slag washing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A leaching process for cobalt-containing mineral aggregate is characterized by comprising the following steps: putting slurrying water and cobalt-containing mineral aggregate into a slurrying pool, adjusting the pH value of the solution, and fully slurrying to obtain first mixed slurry; continuously leaching and continuously removing iron from the first mixed slurry to obtain second mixed slurry; and carrying out continuous filter pressing on the second mixed slurry and carrying out continuous slag washing on the slag subjected to filter pressing.
2. The leaching process for cobalt-containing mineral aggregate according to claim 1, wherein the slurrying water and the cobalt-containing mineral aggregate are fed into the slurrying tank and the pH of the slurry is adjusted to between 2.5 and 3.0.
3. The leaching process for cobalt-containing mineral aggregate according to claim 2, characterized in that the specific method of continuous leaching is:
placing concentrated sulfuric acid and the first mixed slurry into a first leaching tank, and controlling the pH value of feed liquid in the first leaching tank to be 1.0-1.5 and the temperature to be 60-65 ℃;
overflowing the overflow liquid in the first leaching tank into a second leaching tank along with the reaction, adding concentrated sulfuric acid and sulfur dioxide into the second leaching tank, and controlling the pH value of feed liquid in the second leaching tank to be 1.0-1.5, the temperature to be 60-65 ℃ and the potential to be 320-360 mv;
overflowing the overflow liquid in the second leaching tank to a third leaching tank along with the reaction, adding the sodium metabisulfite into the third leaching tank, and controlling the pH value of the liquid in the third leaching tank to be 1.0-1.5, the temperature to be 60-65 ℃ and the potential to be 280-320 mv;
and overflowing the slurry in the third leaching tank into a fourth leaching tank along with the reaction, and adding the sodium chlorate into the fourth leaching tank to finish the continuous leaching of the first mixed slurry.
4. The leaching process for the cobalt-containing mineral aggregate according to claim 3, wherein the first mixed slurry after the continuous leaching is subjected to continuous iron removal after passing through a leaching transfer tank, wherein the temperature in the leaching transfer tank is between 60 and 65 ℃, and the potential is between 380mv and 400 mv.
5. The leaching process for the cobalt-containing mineral aggregate according to claim 4, wherein the specific method for continuously removing iron is as follows:
pumping the mixed slurry passing through the leaching transfer tank into a first iron removing tank, adding liquid caustic soda into the first iron removing tank, and controlling the pH value of feed liquid in the first iron removing tank to be 2.5-3.0 and the temperature to be 60-65 ℃;
and (3) overflowing the overflow liquid in the first iron removing tank into a second iron removing tank along with the reaction, adding liquid alkali into the second iron removing tank, and controlling the pH value of the liquid in the second iron removing tank to be 3.0-3.5 and the temperature to be 60-65 ℃ to complete continuous iron removal.
6. The leaching process for the cobalt-containing mineral aggregate according to claim 5, wherein the specific method of continuous pressure filtration is as follows:
carrying out primary filter pressing on the second mixed slurry to obtain a post-iron liquid and a post-iron slag; and (3) carrying out filter pressing on the iron post-liquid to obtain a fine filter liquid and fine filter residues, and separating and purifying the fine filter liquid through an extraction process.
7. The leaching process for the cobalt-containing ore material according to claim 6, wherein the specific method of the continuous slag washing is as follows:
carrying out first slag washing on the second mixed slurry subjected to continuous filter pressing to obtain first slag washing water and first slag; and returning the first slag washing water to leaching for recycling, performing secondary slag washing on the primary slag, adding concentrated sulfuric acid in the process of slag washing to control the pH value of the first slag to be 1.5-2.0, controlling the temperature to be 70-80 ℃, performing filter pressing to obtain secondary slag and secondary slag washing water, returning the second slag washing water to the primary slag washing, performing third slag washing on the secondary slag, performing filter pressing to obtain third slag washing water and third slag, returning the third slag washing water to the secondary slag washing, performing alkali washing and filter pressing on the third slag to obtain alkali water and waste residue, and completing continuous slag washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811494379.0A CN111286629A (en) | 2018-12-07 | 2018-12-07 | Leaching process for cobalt-containing mineral aggregate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494379.0A CN111286629A (en) | 2018-12-07 | 2018-12-07 | Leaching process for cobalt-containing mineral aggregate |
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| CN111286629A true CN111286629A (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811494379.0A Pending CN111286629A (en) | 2018-12-07 | 2018-12-07 | Leaching process for cobalt-containing mineral aggregate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388742A (en) * | 2021-05-31 | 2021-09-14 | 浙江中金格派锂电产业股份有限公司 | Method for continuously removing iron from leached liquid of cobalt intermediate product |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101629238A (en) * | 2009-07-30 | 2010-01-20 | 浙江华友钴业股份有限公司 | Residue washing method in cobalt hydrometallurgy industry |
| CN101921914A (en) * | 2010-09-17 | 2010-12-22 | 浙江华友钴业股份有限公司 | Iron removal process for copper cobalt ore leach liquor |
| CN106756003A (en) * | 2017-01-12 | 2017-05-31 | 江苏凯力克钴业股份有限公司 | The production method that a kind of use potential control is continuously leached |
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2018
- 2018-12-07 CN CN201811494379.0A patent/CN111286629A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629238A (en) * | 2009-07-30 | 2010-01-20 | 浙江华友钴业股份有限公司 | Residue washing method in cobalt hydrometallurgy industry |
| CN101921914A (en) * | 2010-09-17 | 2010-12-22 | 浙江华友钴业股份有限公司 | Iron removal process for copper cobalt ore leach liquor |
| CN106756003A (en) * | 2017-01-12 | 2017-05-31 | 江苏凯力克钴业股份有限公司 | The production method that a kind of use potential control is continuously leached |
Non-Patent Citations (1)
| Title |
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| 汪家鼎，陈家镛主编: "《溶剂萃取手册》", 31 January 2001, 北京：化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388742A (en) * | 2021-05-31 | 2021-09-14 | 浙江中金格派锂电产业股份有限公司 | Method for continuously removing iron from leached liquid of cobalt intermediate product |
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Application publication date: 20200616 |
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