CN104674012A - Method of separating indium from tin slag - Google Patents
Method of separating indium from tin slag Download PDFInfo
- Publication number
- CN104674012A CN104674012A CN201510082821.9A CN201510082821A CN104674012A CN 104674012 A CN104674012 A CN 104674012A CN 201510082821 A CN201510082821 A CN 201510082821A CN 104674012 A CN104674012 A CN 104674012A
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- CN
- China
- Prior art keywords
- indium
- solution
- tin
- scruff
- separating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
Abstract
The invention discloses a method of separating indium from tin slag. The method is characterized by comprising the following steps: rinsing the tin slag with water, adding an alkaline solution into the rinsed cleaning fluid to regulate a pH value to be 2-3, standing, precipitating, adding an acid solution into the filtered filtrate to regulate a pH value to be 1-1.5, then replacing tin by an indium plate, and finally, replacing indium in the solution by an aluminum plate. The method is capable of completely separating indium and tin and is beneficial to recovering indium.
Description
Technical field
The present invention relates to the separation technology field of indium, specifically a kind of method of separating indium from scruff.
Background technology
Indium is a kind of rare metal, and be widely used in the fields such as electronic semi-conductor, solder and alloy, ITO target, nuclear industry, wherein ITO target is its main Application Areas, accounts for 70% of global indium consumption.ITO target is produced and has mainly been used sputter coating technology, but target utilization is generally about 60%, all the other are waste target, due to the oxidate sintered body that ITO target is made up of In2O3 and SnO2, so waste target is most important indium renewable resource, the quantity of waste target recovery indium and cost are also the important factors pining down indium transaction and indium valency, want the indium in its waste material of efficient recovery, indium is needed to be separated with tin, one is had to be dissolved by waste target with acid in existing separation method, then the tin in solution is displaced with indium plate, but because the impurity contained in solution is more, the stannide displaced is colloidal precipitate thing, wherein still containing more indium, be separated not thorough.
Summary of the invention
Technical problem to be solved by this invention is: a kind of method providing separating indium from scruff, and it is comparatively thorough that the method can make indium be separated with tin, is beneficial to the recovery of indium.
The technical solution adopted in the present invention is: a kind of method providing separating indium from scruff, step is as follows: by scruff water rinse, scavenging solution after rinsing adds alkaline solution, pH value is adjusted to 2 ~ 3, staticly settle, filtrate after filtration adds acid solution and pH value is adjusted to 1 ~ 1.5, then displaces tin with indium plate, is finally cemented out by the indium in solution with aluminium sheet.
As preferably, described alkaline solution is NaOH solution, and acid solution is hydrochloric acid soln.
The method of the present invention's separating indium from scruff effectively can isolate indium from the colloidal precipitate thing of the tin displaced, and working method is simple, and cost is lower, and indium is separated thoroughly, by being separated, to indium the rate of recovery reach more than 96%.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the present invention's method of separating indium from scruff.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
as shown in Figure 1, the method for the present invention's separating indium from scruff, the step of the method is as follows: by scruff water rinse, clean out becoming the tin of metal simple-substance, scavenging solution after rinsing adds NaOH alkaline solution, and pH value is adjusted to 2, and the tin in solution and NaOH reaction generate
with
, leaving standstill will
with
precipitation, the filtrate after filtration adds the hydrochloric acid soln of concentration 31%, and pH value is adjusted to 1.5, and residual tin indium plate cements out, and is finally cemented out by the indium in solution with aluminium sheet.The present invention effectively can isolate indium from the colloidal precipitate thing of the tin displaced, and working method is simple, and cost is lower, and indium is separated thoroughly, by being separated, to indium the rate of recovery reach 97%.
Embodiment 2
As shown in Figure 1, the method for the present invention's separating indium from scruff, the step of the method is as follows: by scruff water rinse, clean out becoming the tin of metal simple-substance, scavenging solution after rinsing adds NaOH alkaline solution, and pH value is adjusted to 2.5, and the tin in solution and NaOH reaction generate
with
, leaving standstill will
with
precipitation, the filtrate after filtration adds the hydrochloric acid soln of concentration 31%, and pH value is adjusted to 1, and residual tin indium plate cements out, and is finally cemented out by the indium in solution with aluminium sheet.Indium of the present invention the rate of recovery reach 98%.
Embodiment 3
As shown in Figure 1, the method for the present invention's separating indium from scruff, the step of the method is as follows: by scruff water rinse, clean out becoming the tin of metal simple-substance, scavenging solution after rinsing adds NaOH alkaline solution, and pH value is adjusted to 3, and the tin in solution and NaOH reaction generate
with
, leaving standstill will
with
precipitation, the filtrate after filtration adds the hydrochloric acid soln of concentration 31%, and pH value is adjusted to 1.5, and residual tin indium plate cements out, and is finally cemented out by the indium in solution with aluminium sheet.Indium of the present invention the rate of recovery reach 97%.
Claims (2)
1. the method for a separating indium from scruff, it is characterized in that, step is as follows: by scruff water rinse, scavenging solution after rinsing adds alkaline solution, pH value is adjusted to 2 ~ 3, staticly settles, the filtrate after filtration adds acid solution and pH value is adjusted to 1 ~ 1.5, then displace tin with indium plate, finally with aluminium sheet, the indium in solution is cemented out.
2. the method for separating indium from scruff according to claim 1, is characterized in that: described alkaline solution is NaOH solution, and acid solution is hydrochloric acid soln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510082821.9A CN104674012A (en) | 2015-02-16 | 2015-02-16 | Method of separating indium from tin slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510082821.9A CN104674012A (en) | 2015-02-16 | 2015-02-16 | Method of separating indium from tin slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104674012A true CN104674012A (en) | 2015-06-03 |
Family
ID=53309594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510082821.9A Pending CN104674012A (en) | 2015-02-16 | 2015-02-16 | Method of separating indium from tin slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104674012A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1757768A (en) * | 2005-11-01 | 2006-04-12 | 株洲冶炼集团有限责任公司 | Separation method of indium tin mixture |
| CN101701292A (en) * | 2009-10-20 | 2010-05-05 | 南京中锗科技股份有限公司 | Method for recovering indium and tin from ITO waste targets by utilizing oxidation method |
| CN102199706B (en) * | 2011-05-21 | 2013-05-15 | 南京中锗科技股份有限公司 | Method for comprehensively recovering valuable metal in diode core |
| KR101470123B1 (en) * | 2013-02-05 | 2014-12-08 | 순천대학교 산학협력단 | Refining method of Tin sludge |
-
2015
- 2015-02-16 CN CN201510082821.9A patent/CN104674012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1757768A (en) * | 2005-11-01 | 2006-04-12 | 株洲冶炼集团有限责任公司 | Separation method of indium tin mixture |
| CN101701292A (en) * | 2009-10-20 | 2010-05-05 | 南京中锗科技股份有限公司 | Method for recovering indium and tin from ITO waste targets by utilizing oxidation method |
| CN102199706B (en) * | 2011-05-21 | 2013-05-15 | 南京中锗科技股份有限公司 | Method for comprehensively recovering valuable metal in diode core |
| KR101470123B1 (en) * | 2013-02-05 | 2014-12-08 | 순천대학교 산학협력단 | Refining method of Tin sludge |
Non-Patent Citations (2)
| Title |
|---|
| 余成华: "铟锡合金碱法分离的研究", 《稀有金属》 * |
| 刘家祥 等: "利用ITO废靶材回收金属铟", 《稀有金属》 * |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |
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| RJ01 | Rejection of invention patent application after publication |