CN105420756A - Method for recycling indium from waste ITO target material through reduction method - Google Patents
Method for recycling indium from waste ITO target material through reduction method Download PDFInfo
- Publication number
- CN105420756A CN105420756A CN201510896090.1A CN201510896090A CN105420756A CN 105420756 A CN105420756 A CN 105420756A CN 201510896090 A CN201510896090 A CN 201510896090A CN 105420756 A CN105420756 A CN 105420756A
- Authority
- CN
- China
- Prior art keywords
- indium
- ito
- waste
- target
- ito target
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/22—Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups C25C1/02 - C25C1/20
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recycling indium from a waste ITO target material through a reduction method. The method includes the following steps that firstly, the waste ITO target material is subjected to ball grinding, the waste ITO target powder is obtained and contained in a container, hydrogen is led into the container under the condition of the high temperature of 780 DEG C, and indium and tin alloy is obtained through reduction; and secondly, under the environment with sulfuric acid with the PH of 2-2.5, 70-100 g/L of indium ions and 75-90 g/L of sodium ions at the temperature of 22-25 DEG C, the indium and tin alloy is electrolyzed, high-purity indium 4N is obtained, and tin enters anode mud. According to the method, pollution is avoided in production, the purity of indium can be ensured, and the purity of the indium can reach 4N or higher through one-time electrolysis. According to the method, production cost is saved by 50% compared with production cost of wet process production, and generation of waste water and waste gas is avoided.
Description
Technical field
The present invention relates to the method for a kind of reduction method recovery indium from ITO waste target.
Background technology
Indium is a kind of important dissipated metal element, and its compound has a wide range of applications in semi-conductor, electronic industry, nuclear industry etc.Wherein indium tin oxide (ITO) is the most large consumption of indium, accounts for more than seventy percent of aggregate consumption.Produce the scrap stock, the target after chip and waste product and sputter coating that produce in target process at ITO powder, this type of is the largest source of the secondary resource of indium.ITO principal constituent is: indium 70-75%, tin 7-8%, and other is oxygen, a small amount of impurity.
From ITO waste target, recovery indium key considers the separation of indium tin, the quality of thick indium, the yield of thick indium, environmental pollution, production cost.
Although adopt traditional technology, utilize the technique of replacing tin in Leaching in Hydrochloric Acid solution can obtain qualified thick indium by separating indium tin, but need every day the thick indium finished product of about 10% to return displacement tin operation, the rate of recovery <95% of indium, and the indium grade in spongy tin is up to 5-10%, is difficult to give up and sells as tin product.
Also have other wet method Ore Leachings to produce, all can produce a large amount of spent acid, cause environmental pollution.
Summary of the invention
For problems of the prior art, the technical problem that the present invention is intended to realize is: the method designing a kind of reduction method recovery indium tin from ITO waste target, realizes high-level efficiency in hydrogen reducing atmosphere and reclaims.
In order to realize foregoing invention object, its technical scheme adopted is: with hydrogen reducing, generates indium stannum alloy, then through the method for electrolysis, electrolysis production goes out high purity indium 4N (99.995%).
ITO waste target ball grinds, the target powder that given up by ITO is contained in vessel, under the condition of high temperature, passes into hydrogen, and Indium sesquioxide, stannic oxide are reduced into indium stannum alloy, then indium stannum alloy is cast into anode and carries out electrolysis, and tin enters the anode sludge.
Processing condition:
1, reductive condition: ITO powder, granularity: 200 orders, reductive agent: hydrogen, reduction temperature: 750 DEG C ~ 820 DEG C.
2, electrolysis system: sulfuric acid, PH=2-2.5, In
3+: 70-100g/L, Na
+: 75-90g/L, temperature: 22-25 DEG C.
Present method has following beneficial effect: this method is produced and do not polluted, and indium purity can ensure, once electrolytic indium purity can reach more than 4N.This method production cost reduces expenses 50% than wet production, and produces without waste water and gas.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment one: reduction method technique as shown in Figure 1: ITO waste target ball grinds, ITO gives up target powder particles: 200 orders; The target powder that given up by ITO is contained in vessel, under the condition of 780 DEG C of high temperature, passes into reductive agent hydrogen, Indium sesquioxide, stannic oxide are reduced into indium stannum alloy;
Again indium stannum alloy is cast into anode and carries out electrolysis, electrolysis system: sulfuric acid, PH=2; In
3+: 70/L, Na
+: 75g/L, temperature: 22 DEG C.Tin enters the anode sludge.Again tin is reduced afterwards.
Embodiment two: with embodiment one, wherein electrolysis system: sulfuric acid, PH=2; In
3+: 70/L, Na
+: 90g/L, temperature: 22 DEG C.
Embodiment three: with embodiment one, wherein electrolysis system: sulfuric acid, PH=2.5; In
3+: 100/L, Na
+: 75g/L, temperature: 22 DEG C.
Embodiment four: with embodiment one, wherein electrolysis system: sulfuric acid, PH=2.5; In
3+: 100/L, Na
+: 90g/L, temperature: 22 DEG C.
Embodiment five: with embodiment one, wherein electrolysis system: sulfuric acid, PH=2.5; In
3+: 100/L, Na
+: 90g/L, temperature: 25 DEG C.
Embodiment six: with embodiment one, when wherein passing into hydrogen, is the hot environment of 750 DEG C.
Embodiment seven: with embodiment one, when wherein passing into hydrogen, is the hot environment of 820 DEG C.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.The technology that the present invention does not relate to all is realized by existing technology.
Claims (3)
1. the method for reduction method recovery indium from ITO waste target, is characterized in that:
Step one: by ITO waste target through ball milling, obtain ITO and to give up target powder, the target powder that given up by described ITO is contained in vessel, under the condition of 750 DEG C of-820 DEG C of high temperature, pass into hydrogen, reduces to obtain indium stannum alloy;
Step 2: be sulfuric acid, the In of 2 ~ 2.5 at PH
3+content 70 ~ 100g/L, Na
+content 75 ~ 90g/L, under temperature 22 ~ 25 DEG C of environment, by described indium stannum alloy electrolysis, obtain high purity indium 4N, tin enters the anode sludge.
2. the method for reduction method according to claim 1 recovery indium from ITO waste target, is characterized in that: described indium stannum alloy is cast into anode and carries out electrolysis.
3. the method for reduction method according to claim 1 recovery indium from ITO waste target, is characterized in that: the described ITO target Powder Particle Size that gives up is 200 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896090.1A CN105420756A (en) | 2015-12-08 | 2015-12-08 | Method for recycling indium from waste ITO target material through reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896090.1A CN105420756A (en) | 2015-12-08 | 2015-12-08 | Method for recycling indium from waste ITO target material through reduction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105420756A true CN105420756A (en) | 2016-03-23 |
Family
ID=55499283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510896090.1A Pending CN105420756A (en) | 2015-12-08 | 2015-12-08 | Method for recycling indium from waste ITO target material through reduction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105420756A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642522A (en) * | 2018-05-17 | 2018-10-12 | 汉能新材料科技有限公司 | A kind of recovery method of the waste material containing indium |
| CN110042229A (en) * | 2019-04-28 | 2019-07-23 | 云南锡业集团（控股）有限责任公司研发中心 | A method of recycling indium metal from ITO waste target |
| CN112961985A (en) * | 2021-02-01 | 2021-06-15 | 韶关市欧莱高纯材料技术有限公司 | Fire recovery fine indium process for regenerating fine indium target by using target recovered material |
| CN113652717A (en) * | 2021-08-13 | 2021-11-16 | 恩施市致纯电子材料有限公司 | Recovery process of ITO waste target material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673416A (en) * | 2004-01-19 | 2005-09-28 | 住友化学株式会社 | Method for producing indium-containing aqueous solution |
| CN104711638A (en) * | 2014-11-21 | 2015-06-17 | 株洲冶炼集团股份有限公司 | Method for extracting indium and tin from waste ITO targets through reduction and electrolysis |
-
2015
- 2015-12-08 CN CN201510896090.1A patent/CN105420756A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673416A (en) * | 2004-01-19 | 2005-09-28 | 住友化学株式会社 | Method for producing indium-containing aqueous solution |
| CN104711638A (en) * | 2014-11-21 | 2015-06-17 | 株洲冶炼集团股份有限公司 | Method for extracting indium and tin from waste ITO targets through reduction and electrolysis |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642522A (en) * | 2018-05-17 | 2018-10-12 | 汉能新材料科技有限公司 | A kind of recovery method of the waste material containing indium |
| CN110042229A (en) * | 2019-04-28 | 2019-07-23 | 云南锡业集团（控股）有限责任公司研发中心 | A method of recycling indium metal from ITO waste target |
| CN112961985A (en) * | 2021-02-01 | 2021-06-15 | 韶关市欧莱高纯材料技术有限公司 | Fire recovery fine indium process for regenerating fine indium target by using target recovered material |
| CN113652717A (en) * | 2021-08-13 | 2021-11-16 | 恩施市致纯电子材料有限公司 | Recovery process of ITO waste target material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8012337B2 (en) | Method for collection of valuable metal from ITO scrap | |
| CN101701292B (en) | Method for recovering indium and tin from ITO waste targets by utilizing oxidation method | |
| CA2667234C (en) | Method for collection of valuable metal from ito scrap | |
| US8003065B2 (en) | Method for collection of valuable metal from ITO scrap | |
| US8007652B2 (en) | Method for collection of valuable metal from ITO scrap | |
| CN104340995B (en) | A kind of method of red mud comprehensive utilization | |
| CN102719675B (en) | Method for comprehensively recovering zinc, lead and silver from waste residues generated in zinc smelting | |
| US8012335B2 (en) | Method for collection of valuable metal from ITO scrap | |
| CN105420756A (en) | Method for recycling indium from waste ITO target material through reduction method | |
| CN104032136B (en) | A kind of method reclaiming copper-indium-galliun-selenium from waste material | |
| CN103482680B (en) | A kind of technique of being produced nano zine oxide by secondary zinc oxide | |
| CN104831073A (en) | Technology for recovering platinum, palladium and rhodium from spent auto-catalyst | |
| CN103103356B (en) | Process for recovering crude indium and tin from ITO (indium tin oxide) waste target | |
| CN104711638B (en) | Method for extracting indium and tin from waste ITO targets through reduction and electrolysis | |
| CN103979704A (en) | Hexavalent chromium-containing wastewater treatment method | |
| WO2014112198A1 (en) | Method for recovering indium-tin alloy from ito target scrap and methods for producing indium oxide-tin oxide powder and ito target | |
| CN106756101A (en) | A kind of wet method preparation process of nickel | |
| CN102912155A (en) | Recovery processing process of stanniferous electrofacing sludge | |
| CN101994011A (en) | Method for treating and refining copper, tin, zinc and lead-containing waste residues | |
| CN104711426A (en) | Method for extracting indium and tin from waste ITO targets through reduction and electrolysis | |
| CN106467937B (en) | A kind of method of recovery indium and tin | |
| CN104651881A (en) | Method for recovering indium from indium residues | |
| CN103818947B (en) | Method for preparing thallium iodide by using lead zinc ore smelting wastewater as raw material | |
| CN115446322A (en) | Method for preparing molybdenum powder by recycling waste molybdenum targets | |
| CN104032127B (en) | A kind of slurry electrolysis is the technique of Leaching Molybdenum from nickel-molybdenum ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |