CN104651617A - Method for extracting indium from alkaline residues - Google Patents
Method for extracting indium from alkaline residues Download PDFInfo
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- CN104651617A CN104651617A CN201510083521.2A CN201510083521A CN104651617A CN 104651617 A CN104651617 A CN 104651617A CN 201510083521 A CN201510083521 A CN 201510083521A CN 104651617 A CN104651617 A CN 104651617A
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- indium
- alkaline residue
- hydrochloric acid
- pureed
- slag
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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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Abstract
The invention relates to the technical field of extraction of indium, in particular to a method for separating indium from alkaline residues. The specific operation comprises the following steps: washing, screening, acid dissolution and replacement. According to the extraction method provided by the invention, residual indium contained in the alkaline residues can be simply and efficiently extracted from the alkaline residues; other metal impurities contained in the alkaline residues are not dissolved and mixed into a recovery system of indium; the recovery rate of indium extracted from the alkaline residues reaches 98%; and the method is suitable for popularization and application in wide metallurgical enterprises.
Description
Technical field
The present invention relates to a kind of extractive technique field of indium, be specifically related to a kind of method extracting indium from alkaline residue.
Background technology
When ITO target obtains through soda boiling after sponge indium through displacement, after the impurity such as de-iron, zinc, aluminium, the alkaline residue on surface also contains the indium metal grain of about 25%, thus needs the indium in alkaline residue to extract, to promote the overall rate of recovery.
At present, vast smelter generally adopts acid-soluble technology to extract contained remaining indium metal grain in alkaline residue, but this technology can consume too much acid, also some metallic impurity is dissolved simultaneously, together brings in the recovery system of indium, is unfavorable for that the extraction of indium is reclaimed.Therefore, study and a kind ofly the simply efficient method extracting indium from alkaline residue can become the previous difficult problem urgently needing solution badly of order.
Summary of the invention
In order to make up the defect of prior art, the invention provides a kind of can the simply efficient method extracting indium from alkaline residue.
Technical scheme of the present invention is: provide a kind of method extracting indium from alkaline residue, comprises following washing screening, acid-soluble and displacement step:
1 washing screening:
A. be soaked in water by alkaline residue, the mass ratio of alkaline residue and water is 1:2 ~ 4, soak time 24 ~ 48 hours;
B. above soaked alkaline residue is put into wash machine and carry out rinsing 3 times, each 8-15 minute;
C. sieved by the alkaline residue that above rinsing is good, obtain thick indium grain, pureed slag and scavenging solution respectively, thick indium grain is made into positive plate, and scavenging solution does wastewater treatment;
2 is acid-soluble: the pureed slag of above step 1 gained is added concentration be 31% hydrochloric acid dissolve, and the mass ratio of pureed slag and hydrochloric acid is 1:2, and adjustment pH value to 5.5, separates zinc wherein, cadmium, lead, be precipitated thing;
3 displacement: the throw out of above step 2 gained is added concentration be 31% hydrochloric acid dissolve, the mass ratio of throw out and hydrochloric acid is 1:2, then adopts aluminium sheet to replace, and obtains thick indium.
Beneficial effect of the present invention is:
Extracting method of the present invention, remaining indium contained by it can be extracted simply efficiently from alkaline residue, and all the other metallic impurity contained in alkaline residue can not be dissolved in the lump and bring in the recovery system of indium, reach 98% to the rate of recovery extracting indium in alkaline residue, the method is adapted at promoting the use of in vast smelter.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
A kind of method extracting indium from alkaline residue of the present invention, as shown in Figure 1, comprises following washing screening, acid-soluble and displacement step:
1 washing screening:
A. be soaked in water by alkaline residue, the mass ratio of alkaline residue and water is 1:2 ~ 4, soak time 24 ~ 48 hours;
B. above soaked alkaline residue is put into wash machine and carry out rinsing 3 times, each 8-15 minute;
C. sieved by the alkaline residue that above rinsing is good, obtain thick indium grain, pureed slag and scavenging solution respectively, thick indium grain is made into positive plate, and scavenging solution does wastewater treatment;
2 is acid-soluble: the pureed slag of above step 1 gained is added concentration be 31% hydrochloric acid dissolve, and the mass ratio of pureed slag and hydrochloric acid is 1:2, and adjustment pH value to 5.5, separates zinc wherein, cadmium, lead, be precipitated thing;
3 displacement: the throw out of above step 2 gained is added concentration be 31% hydrochloric acid dissolve, the mass ratio of throw out and hydrochloric acid is 1:2, then adopts aluminium sheet to replace, and obtains thick indium.
Embodiment 1:
The present invention extracts the method for indium from alkaline residue, comprises following washing screening, acid-soluble and displacement step:
1 washing screening:
A. be soaked in water by alkaline residue, the mass ratio of alkaline residue and water is 1:2, soak time 24 hours;
B. above soaked alkaline residue is put into wash machine and carry out rinsing 3 times, each 10 minutes;
C. sieved by the alkaline residue that above rinsing is good, obtain thick indium grain, pureed slag and scavenging solution respectively, thick indium grain is made into positive plate, and scavenging solution does wastewater treatment;
2 is acid-soluble: the pureed slag of above step 1 gained is added concentration be 31% hydrochloric acid dissolve, and the mass ratio of pureed slag and hydrochloric acid is 1:2, and adjustment pH value to 5.5, separates zinc wherein, cadmium, lead, be precipitated thing;
3 displacement: the throw out of above step 2 gained is added concentration be 31% hydrochloric acid dissolve, the mass ratio of throw out and hydrochloric acid is 1:2, then adopts aluminium sheet to replace, and obtains thick indium.
Embodiment 2:
The present invention extracts the method for indium from alkaline residue, comprises following washing screening, acid-soluble and displacement step:
1 washing screening:
A. be soaked in water by alkaline residue, the mass ratio of alkaline residue and water is 1:3, soak time 36 hours;
B. above soaked alkaline residue is put into wash machine and carry out rinsing 3 times, each 8 minutes;
C. sieved by the alkaline residue that above rinsing is good, obtain thick indium grain, pureed slag and scavenging solution respectively, thick indium grain is made into positive plate, and scavenging solution does wastewater treatment;
2 is acid-soluble: the pureed slag of above step 1 gained is added concentration be 31% hydrochloric acid dissolve, and the mass ratio of pureed slag and hydrochloric acid is 1:2, and adjustment pH value to 5.5, separates zinc wherein, cadmium, lead, be precipitated thing;
3 displacement: the throw out of above step 2 gained is added concentration be 31% hydrochloric acid dissolve, the mass ratio of throw out and hydrochloric acid is 1:2, then adopts aluminium sheet to replace, and obtains thick indium.
Embodiment 3:
The present invention extracts the method for indium from alkaline residue, comprises following washing screening, acid-soluble and displacement step:
1 washing screening:
A. be soaked in water by alkaline residue, the mass ratio of alkaline residue and water is 1:4, soak time 48 hours;
B. above soaked alkaline residue is put into wash machine and carry out rinsing 3 times, each 15 minutes;
C. sieved by the alkaline residue that above rinsing is good, obtain thick indium grain, pureed slag and scavenging solution respectively, thick indium grain is made into positive plate, and scavenging solution does wastewater treatment;
2 is acid-soluble: the pureed slag of above step 1 gained is added concentration be 31% hydrochloric acid dissolve, and the mass ratio of pureed slag and hydrochloric acid is 1:2, and adjustment pH value to 5.5, separates zinc wherein, cadmium, lead, be precipitated thing;
3 displacement: the throw out of above step 2 gained is added concentration be 31% hydrochloric acid dissolve, the mass ratio of throw out and hydrochloric acid is 1:2, then adopts aluminium sheet to replace, and obtains thick indium.
Claims (1)
1. from alkaline residue, extract a method for indium, it is characterized in that, comprise following washing screening, acid-soluble and displacement step:
1) washing screening:
A. be soaked in water by alkaline residue, the mass ratio of alkaline residue and water is 1:2 ~ 4, soak time 24 ~ 48 hours;
B. above soaked alkaline residue is put into wash machine and carry out rinsing 3 times, each 8-15 minute;
C. sieved by the alkaline residue that above rinsing is good, obtain thick indium grain, pureed slag and scavenging solution respectively, thick indium grain is made into positive plate, and scavenging solution does wastewater treatment;
2) acid-soluble: the pureed slag of above step 1) gained is added concentration be 31% hydrochloric acid dissolve, and the mass ratio of pureed slag and hydrochloric acid is 1:2, and adjustment pH value to 5.5, separates zinc wherein, cadmium, lead, be precipitated thing;
3) replace: by above step 2) throw out of gained add concentration be 31% hydrochloric acid dissolve, the mass ratio of throw out and hydrochloric acid is 1:2, then adopts aluminium sheet to replace, and obtains thick indium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510083521.2A CN104651617A (en) | 2015-02-16 | 2015-02-16 | Method for extracting indium from alkaline residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510083521.2A CN104651617A (en) | 2015-02-16 | 2015-02-16 | Method for extracting indium from alkaline residues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104651617A true CN104651617A (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510083521.2A Pending CN104651617A (en) | 2015-02-16 | 2015-02-16 | Method for extracting indium from alkaline residues |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603434A (en) * | 2004-11-02 | 2005-04-06 | 昆明理工大学 | Method for preparing sponge indium from indium slag |
| CN101104883A (en) * | 2007-07-07 | 2008-01-16 | 王树楷 | Method for reclaiming indium and tin from ITO waste material by pickling-vulcanization deposition combined technique |
| JP2008297607A (en) * | 2007-05-31 | 2008-12-11 | Mitsubishi Materials Corp | In-Sn SEPARATING/RECOVERING METHOD |
| JP4470689B2 (en) * | 2004-10-29 | 2010-06-02 | 三菱マテリアル株式会社 | Indium recovery method using tin smelting |
| CN101760654A (en) * | 2008-12-24 | 2010-06-30 | 深圳市东江环保股份有限公司 | Method for recovering indium from indium-containing waste |
| CN101831550A (en) * | 2010-05-21 | 2010-09-15 | 葫芦岛锌业股份有限公司 | Method for extracting indium from alkali oxidation scum rich in indium |
| CN102321815A (en) * | 2011-09-24 | 2012-01-18 | 葫芦岛锌业股份有限公司 | Method for extracting indium from indium-containing zinc oxide |
| CN102899502A (en) * | 2012-10-08 | 2013-01-30 | 来宾华锡冶炼有限公司 | Method for extracting indium-zinc and recovering tin from high tin high indium-zinc leaching residues |
-
2015
- 2015-02-16 CN CN201510083521.2A patent/CN104651617A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4470689B2 (en) * | 2004-10-29 | 2010-06-02 | 三菱マテリアル株式会社 | Indium recovery method using tin smelting |
| CN1603434A (en) * | 2004-11-02 | 2005-04-06 | 昆明理工大学 | Method for preparing sponge indium from indium slag |
| JP2008297607A (en) * | 2007-05-31 | 2008-12-11 | Mitsubishi Materials Corp | In-Sn SEPARATING/RECOVERING METHOD |
| CN101104883A (en) * | 2007-07-07 | 2008-01-16 | 王树楷 | Method for reclaiming indium and tin from ITO waste material by pickling-vulcanization deposition combined technique |
| CN101760654A (en) * | 2008-12-24 | 2010-06-30 | 深圳市东江环保股份有限公司 | Method for recovering indium from indium-containing waste |
| CN101831550A (en) * | 2010-05-21 | 2010-09-15 | 葫芦岛锌业股份有限公司 | Method for extracting indium from alkali oxidation scum rich in indium |
| CN102321815A (en) * | 2011-09-24 | 2012-01-18 | 葫芦岛锌业股份有限公司 | Method for extracting indium from indium-containing zinc oxide |
| CN102899502A (en) * | 2012-10-08 | 2013-01-30 | 来宾华锡冶炼有限公司 | Method for extracting indium-zinc and recovering tin from high tin high indium-zinc leaching residues |
Non-Patent Citations (3)
| Title |
|---|
| 张伟健: "《铅锌密闭鼓风炉冶炼》", 31 December 2010 * |
| 邹建新等: "《钒钛产品生产工艺与设备》", 31 January 2014 * |
| 马荣骏等: "《循环经济的二次资源金属回收》", 30 June 2014 * |
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Application publication date: 20150527 |