CN102976394A - Method for extracting gallium hydroxide from vanadium slag - Google Patents
Method for extracting gallium hydroxide from vanadium slag Download PDFInfo
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- CN102976394A CN102976394A CN2012105419120A CN201210541912A CN102976394A CN 102976394 A CN102976394 A CN 102976394A CN 2012105419120 A CN2012105419120 A CN 2012105419120A CN 201210541912 A CN201210541912 A CN 201210541912A CN 102976394 A CN102976394 A CN 102976394A
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- vanadium slag
- gallium hydroxide
- gallium
- extracting
- extracting gallium
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Abstract
The invention relates to a method for extracting gallium hydroxide from vanadium slag, particularly a method for extracting gallium hydroxide from vanadium slag in a process of extracting gallium from a sodium aluminate solution. The method is characterized by comprising the following steps: (1) adding vanadium slag, which is generated in a process of extracting gallium from a sodium aluminate solution, into alkali liquor to carry out high-pressure leaching; (2) filtering to obtain a leaching solution; (3) purifying the leaching solution; and (4) adding acid to neutralize the purified solution to obtain the gallium hydroxide. The method provided by the invention fully utilizes waste in industrial production, is simple to operate, easy to implement and convenient to use, and has the advantages of stable and reliable raw material sources and low price.
Description
Technical field
A kind of method of extracting gallium hydroxide from vanadium slag relates to a kind of method of extracting gallium hydroxide from the vanadium slag of sodium aluminate solution extraction gallium process.
Background technology
Vanadium slag is to extract from sodium aluminate solution in the process of gallium, purifies the main solid waste that the sodium aluminate solution process produces, and its main component is lime.
At present, the vanadium slag that purification sodium aluminate solution process produces is to process as solid waste, owing to contain the valuable metals such as more rich gallium, vanadium in the vanadium slag, owing to there is not effective treatment process, has caused the waste of these valuable metals.The increasing of production cost and the pollution of environment have been caused.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists for above-mentioned prior art, provides a kind of industrial waste that can take full advantage of to reclaim valuable metal, reduce production costs, and realizes the method for extracting gallium hydroxide from vanadium slag of environmental protection.
The objective of the invention is to be achieved by the following technical programs.
A kind of method of extracting gallium hydroxide from vanadium slag is characterized in that its step comprises:
(1) leaching process is produced sodium aluminate solution is extracted the gallium process produces vanadium slag and add in the alkali lye and carry out high pressure digestion;
(2) filtration obtains dissolution fluid;
(3) dissolution fluid is purified;
(4) purify rear liquid acid neutralization, make gallium hydroxide.
A kind of method of extracting gallium hydroxide from vanadium slag of the present invention is characterized in that the alkali liquor oxidized na concn that adds in its step (1) is 60-250g/L.
A kind of method of extracting gallium hydroxide from vanadium slag of the present invention is characterized in that in its step (1) leaching process being produced the amount that sodium aluminate solution is extracted in the gallium process generation vanadium slag adding alkali lye is 10-50g/L.
A kind of method of extracting gallium hydroxide from vanadium slag of the present invention, it is characterized in that the temperature of process in leaching in its step (1) is: 80-200 ℃, after insulated and stirred 10-120 minute, stripping pressure is 1-1.25MPa.
A kind of method of from vanadium slag, extracting gallium hydroxide of the present invention, liquid acid neutralization process after it is characterized in that purifying in its step (1), the acid of adding is hydrochloric acid, the pH value of N-process is 6-8.
A kind of method of extracting gallium hydroxide from vanadium slag of the present invention, liquid adopts existing resin tower adsorption cleaning after the filtering separation.
A kind of method of extracting gallium hydroxide from vanadium slag of the present invention take full advantage of the waste material in the industrial production, and operation is simple, and raw materials enjoy stable sources is reliable, and is cheap, easy to use.
Description of drawings
Fig. 1 is the process flow sheet of the inventive method.
Embodiment
A kind of method of extracting gallium from vanadium slag adopts alumina producer processing waste vanadium slag and liquid caustic soda as raw material.After sodium oxide concentration is adjusted to 60-250g/L in the liquid caustic soda, vanadium slag joined in the adjustment liquid that configures by a certain percentage carry out high pressure digestion, add-on is: 10-50g/L, and temperature is: 80-200 ℃, pressure is: 1-1.25MPa, after insulated and stirred 10-120 minute, obtain dissolved mineral slurry, it is carried out liquid-solid separation, molten rear slag discards, solution is by behind the resin tower adsorption cleaning, and acid neutralization obtains the gallium hydroxide suspension liquid, it is carried out liquid-solid separation obtain gallium hydroxide.
Embodiment 1
Get alumina producer gallium workshop vanadium slag and liquid caustic soda, liquid caustic soda is configured to the alkali lye that sodium oxide concentration is 200g/L, measure the whole liquid of 10 rising tunes, add 3 kilograms of vanadium slags, carried out 1 hour, 150 ℃ of strippings, after dissolved mineral slurry filtered, gallium content was 3.776g/L in the dissolution fluid that obtains, and alumina concentration is 18.09 g/L, content of vanadium is 0.015 g/L, solution is by behind the resin tower adsorption cleaning, and gallium content is 2.956 g/L in the scavenging solution, and alumina concentration is 1.015 g/L, content of vanadium is 0.001g/L, add the hydrochloric acid neutralization and obtain gallium hydroxide, its purity reaches more than 99.99%, and the gallium rate of recovery can reach 70%.
Embodiment 2
Get alumina producer gallium workshop vanadium slag and liquid caustic soda, liquid caustic soda is configured to the alkali lye that sodium oxide concentration is 180g/L, measure the whole liquid of 10 rising tunes, add 3 kilograms of vanadium slags, carried out 1 hour, 150 ℃ of strippings, after dissolved mineral slurry filtered, gallium content was 3.552g/L in the dissolution fluid that obtains, and alumina concentration is 16.39 g/L, content of vanadium is 0.016 g/L, solution is by behind the resin tower adsorption cleaning, and gallium content is 2.684 g/L in the scavenging solution, and alumina concentration is 1.003 g/L, content of vanadium is less than 0.001g/L, add the hydrochloric acid neutralization and obtain gallium hydroxide, its purity reaches more than 99.99%, and the gallium rate of recovery can reach 70%.
Claims (5)
1. method of extracting gallium hydroxide from vanadium slag is characterized in that its step comprises:
Leaching process produced sodium aluminate solution is extracted the gallium process produce vanadium slag and add in the alkali lye and carry out high pressure digestion;
Filtration obtains dissolution fluid;
Dissolution fluid is purified;
(4) purify rear liquid acid neutralization, make gallium hydroxide.
2. a kind of method of extracting gallium hydroxide from vanadium slag according to claim 1 is characterized in that the alkali liquor oxidized na concn that adds in its step (1) is 60-250g/L.
3. a kind of method of extracting gallium hydroxide from vanadium slag according to claim 1 is characterized in that in its step (1) leaching process being produced the amount that sodium aluminate solution is extracted in the gallium process generation vanadium slag adding alkali lye is 10-50g/L.
4. a kind of method of extracting gallium hydroxide from vanadium slag according to claim 1, it is characterized in that the temperature of process in leaching in its step (1) is: 80-200 ℃, after insulated and stirred 10-120 minute, stripping pressure is 1-1.25MPa.
5. a kind of method of extracting gallium hydroxide from vanadium slag according to claim 1 is characterized in that purifying rear liquid acid neutralization process in its step (1), and the acid of adding is hydrochloric acid, and the pH value of N-process is 6-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105419120A CN102976394A (en) | 2012-12-14 | 2012-12-14 | Method for extracting gallium hydroxide from vanadium slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105419120A CN102976394A (en) | 2012-12-14 | 2012-12-14 | Method for extracting gallium hydroxide from vanadium slag |
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| CN102976394A true CN102976394A (en) | 2013-03-20 |
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| CN2012105419120A Pending CN102976394A (en) | 2012-12-14 | 2012-12-14 | Method for extracting gallium hydroxide from vanadium slag |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740940A (en) * | 2013-12-14 | 2014-04-23 | 中国铝业股份有限公司 | Processing method for lime slag generated during purifying process of gallium pregnant solution |
| CN109234541A (en) * | 2018-11-16 | 2019-01-18 | 攀枝花学院 | The method that basic roasting tailings in vanadium extraction mentions gallium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH414174A (en) * | 1960-04-06 | 1966-05-31 | Pechiney Prod Chimiques Sa | Gallium extraction process |
| EP0206081A1 (en) * | 1985-06-10 | 1986-12-30 | Sumitomo Chemical Company, Limited | Recovery of gallium |
| CN1035484C (en) * | 1992-08-28 | 1997-07-23 | 北京科技大学 | Method for extracting gallium from vanadic slag containing gallium |
| CN101117662A (en) * | 2007-08-23 | 2008-02-06 | 内蒙古蒙西高新技术集团有限公司 | Method for producing metal gallium with coproduction of alumina |
-
2012
- 2012-12-14 CN CN2012105419120A patent/CN102976394A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH414174A (en) * | 1960-04-06 | 1966-05-31 | Pechiney Prod Chimiques Sa | Gallium extraction process |
| EP0206081A1 (en) * | 1985-06-10 | 1986-12-30 | Sumitomo Chemical Company, Limited | Recovery of gallium |
| CN1035484C (en) * | 1992-08-28 | 1997-07-23 | 北京科技大学 | Method for extracting gallium from vanadic slag containing gallium |
| CN101117662A (en) * | 2007-08-23 | 2008-02-06 | 内蒙古蒙西高新技术集团有限公司 | Method for producing metal gallium with coproduction of alumina |
Non-Patent Citations (2)
| Title |
|---|
| 吴文伟等: "《从碱性铝酸钠溶液中提取镓的研究进展》", 《湿法冶金》 * |
| 李宏等: "《从含镓浸钒渣中浸出镓的试验研究》", 《钢铁钒钛》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740940A (en) * | 2013-12-14 | 2014-04-23 | 中国铝业股份有限公司 | Processing method for lime slag generated during purifying process of gallium pregnant solution |
| CN109234541A (en) * | 2018-11-16 | 2019-01-18 | 攀枝花学院 | The method that basic roasting tailings in vanadium extraction mentions gallium |
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Application publication date: 20130320 |