CN100383261C - Process for extracting metal cobalt from waste hard alloy - Google Patents
Process for extracting metal cobalt from waste hard alloy Download PDFInfo
- Publication number
- CN100383261C CN100383261C CNB2005100127770A CN200510012777A CN100383261C CN 100383261 C CN100383261 C CN 100383261C CN B2005100127770 A CNB2005100127770 A CN B2005100127770A CN 200510012777 A CN200510012777 A CN 200510012777A CN 100383261 C CN100383261 C CN 100383261C
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- Prior art keywords
- hard alloy
- cobalt
- cobalt metal
- waste
- electrolytic solution
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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 present invention belongs to the technical field of recovering and reutilizing hard alloy, which specifically discloses a technical method for extracting metallic cobalt from waste and old hard alloy, which comprises: waste and old hard alloy with low cobalt content is crushed and is milled into tiny granules of 1 to 5 micrometers by a ball miller, the contact area of the waste and old hard alloy and electrolyte is enlarged, and the electrolytic speed is increased to make metallic cobalt completely dissolved in the electrolyte; the metallic cobalt is extracted through the procedures of extraction, heating for evaporation, drying, etc. If the technical method is utilized to extract metallic cobalt from waste and old hard alloy with low metallic cobalt content lower than 9%, metallic cobalt can be completely extracted. The technical method has great economic meaning.
Description
Technical field
The invention belongs to the Wimet technical field, relate in particular to a kind of processing method of from waste and old hard alloy in low cobalt, extracting cobalt metal.
Background technology
In the processing of scrap hard alloy, extracting the rare metal cobalt has a lot of methods.Utilize the method for electrowinning cobalt to be, scrap hard alloy is put into electrolyzer, with concentration be 15% hydrochloric acid as electrolytic solution, be anode with the copper coin, be negative electrode with the metallic titanium plate, feed electric current and make cobalt metal be dissolved in the hydrochloric acid, remaining bits can continue production electrolysis Tungsten carbide.
Be easier to realize at the above-mentioned high cobalt scrap hard alloy ratio that utilizes the electrolysis process extraction to contain 9% above cobalt metal, be about to scrap hard alloy and put into electrolytic solution, feed Faradaic current, Wimet can be realized successively peeling off, remain at last disintegrating slag, be that electrolysis finishes, electrolytic solution can be realized extraction to cobalt metal by extraction process.But the low cobalt scrap hard alloy that contains 9% following cobalt metal is utilized above-mentioned technology, then be difficult to finish electrolysis scrap hard alloy.Be that Wimet does not take place successively to peel off in the electrolytic process.Therefore, just the cobalt metal in the Wimet can not be extracted fully.
The content of invention
Purpose of the present invention just provides a kind of processing method that the cobalt metal that contains in the low cobalt scrap hard alloy of 9% following cobalt metal can be extracted.
Realize that the technical scheme that above-mentioned purpose of the present invention adopted is:
To hang down the fragmentation of cobalt scrap hard alloy, wearing into granularity with ball mill is 1---5 microns powder, increase the contact area of scrap hard alloy and electrolytic solution, accelerate electrolytic speed greatly, cobalt metal is dissolved in the electrolytic solution fully, cobalt metal is extracted by operations such as extraction, heating evaporation, oven dry.
Or at first scrap hard alloy is put into electrolytic solution, feed electric current Wimet is carried out electrolysis, when electrolysis when scrap hard alloy becomes honeycomb skeleton shape, again it proposition being worn into granularity with ball mill is 1---5 microns powder, electrolysis again, the electrolytic solution that will contain cobalt metal extracts cobalt metal by operations such as extraction, heating evaporation, oven dry.
The processing method of extracting cobalt metal from waste and old hard alloy in low cobalt provided by the present invention compared with prior art, have the following advantages: because before to the scrap hard alloy electrolysis or in the electrolysis, scrap hard alloy carried out broken to become granularity with the ball mill ball milling be 1---5 microns powder, make the contact area of scrap hard alloy and electrolytic solution increase, can accelerate electrolytic speed greatly and realize low cobalt scrap hard alloy, fully can be by electrolysis so that wherein contained cobalt metal is dissolved in the electrolytic solution, thus realize the extraction problem of cobalt metal.
Embodiment
First kind of mode:
To hang down the cleaning of cobalt scrap hard alloy water, fragmentation, wearing into granularity with ball mill is 1---3 microns powder, it is put in the electrolytic solution energising carries out electrolysis, cobalt metal is dissolved in the electrolytic solution fully, by operations such as extraction, heating evaporation, oven dry cobalt metal is extracted again.
The second way:
At first scrap hard alloy is put into electrolytic solution, feed electric current Wimet is carried out electrolysis, when electrolysis when scrap hard alloy becomes honeycomb skeleton shape, again it proposition being worn into granularity with ball mill is 1---3 microns powder, re-electrolysis again, the electrolytic solution that will contain cobalt metal extracts cobalt metal by operations such as extraction, heating evaporation, oven dry.
In above-mentioned two kinds of embodiments, utilizing ball mill that scrap hard alloy or the honeycomb skeleton through being electrolyzed to produce are worn into granularity is 3---5 microns powder, can make cobalt metal become ion through electrolysis process again is dissolved in the electrolytic solution, by operations such as extraction, heating evaporation, oven dry cobalt metal is extracted.
Through experiment, only wearing into granularity when scrap hard alloy or the honeycomb skeleton through being electrolyzed to produce is 1---during 5 microns powder, could make cobalt metal wherein all become metal ion by electrolysis process, just help cobalt metal being extracted by operations such as extraction, heating evaporation, oven dry.Extracting in the technology of cobalt metal from low cobalt scrap hard alloy, if without the operation of it being worn into granularity, cobalt metal is difficult to extract; And during the granularity thin more (being lower than 1 micron) that scrap hard alloy or the honeycomb skeleton through being electrolyzed to produce are worn into, its tooling cost will increase greatly---and when the granularity scrap hard alloy or the honeycomb skeleton through being electrolyzed to produce worn into through experiment was 0.5 and 2 micron, the raw materials cost of processing 1 ton differed 1200 yuans; During granularity big more (greater than 5 microns) that scrap hard alloy or the honeycomb skeleton through being electrolyzed to produce are worn into, its cobalt metal then has to be lost, and does not reach the purpose of extraction.
Claims (2)
1. from waste and old hard alloy in low cobalt, extract the processing method of cobalt metal, it is characterized in that comprising the following steps:
To hang down the fragmentation of cobalt scrap hard alloy, wear into 1 with ball mill---5 microns molecule, the contact area of increase scrap hard alloy and electrolytic solution is accelerated electrolytic speed, cobalt metal is dissolved in the electrolytic solution fully, cobalt metal is extracted by extraction, heating evaporation, baking operation.
2. from waste and old hard alloy in low cobalt, extract the processing method of cobalt metal, it is characterized in that comprising the following steps:
At first scrap hard alloy is put into electrolytic solution, feed electric current Wimet is carried out electrolysis, when electrolysis when scrap hard alloy becomes honeycomb skeleton shape, again it proposition is worn into 1 with ball mill---5 microns molecule, electrolysis again, the electrolytic solution that will contain cobalt metal extracts cobalt metal by extraction, heating evaporation, baking operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100127770A CN100383261C (en) | 2005-08-31 | 2005-08-31 | Process for extracting metal cobalt from waste hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100127770A CN100383261C (en) | 2005-08-31 | 2005-08-31 | Process for extracting metal cobalt from waste hard alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749420A CN1749420A (en) | 2006-03-22 |
| CN100383261C true CN100383261C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100127770A Expired - Fee Related CN100383261C (en) | 2005-08-31 | 2005-08-31 | Process for extracting metal cobalt from waste hard alloy |
Country Status (1)
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| CN (1) | CN100383261C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157982B (en) * | 2006-10-08 | 2011-04-06 | 中国恩菲工程技术有限公司 | Method for leaching bidery metal by sulfuric acid and inflation agitation leaching trough |
| CN108910966B (en) * | 2018-09-21 | 2020-06-09 | 湖南金雕能源科技有限公司 | Method for extracting tungsten carbide and cobalt from waste hard alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1770426C (en) * | 1990-07-11 | 1992-10-23 | С.А. Васильев и Е.Н. Кузнецова | Method for processing of dust, formed in tungsten-containing cemented-carbide tool grinding |
| CN1609279A (en) * | 2003-10-17 | 2005-04-27 | 鞍山科技大学 | Method for producing powder raw material of rigid alloy product from waste hard alloy |
-
2005
- 2005-08-31 CN CNB2005100127770A patent/CN100383261C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1770426C (en) * | 1990-07-11 | 1992-10-23 | С.А. Васильев и Е.Н. Кузнецова | Method for processing of dust, formed in tungsten-containing cemented-carbide tool grinding |
| CN1609279A (en) * | 2003-10-17 | 2005-04-27 | 鞍山科技大学 | Method for producing powder raw material of rigid alloy product from waste hard alloy |
Non-Patent Citations (1)
| Title |
|---|
| 含钻硬质合金废料的综合回收. 张愈祖，蔡传算.矿冶工程，第20卷第2期. 2000 * |
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| CN1749420A (en) | 2006-03-22 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Heibei Liulong Hard Alloy Group Co., Ltd. Assignor: Duan Licheng Contract fulfillment period: 2008.10.31 to 2016.12.31 contract change Contract record no.: 2008130000098 Denomination of invention: Process for extracting metal cobalt from waste hard alloy Granted publication date: 20080423 License type: Exclusive license Record date: 20081119 Assignee: Changsha Zhongnan Kaida Powder Metallurgy Co.,Ltd. Assignor: Duan Licheng Contract fulfillment period: 2008.9.30 to 2015.9.30 contract change Contract record no.: 2008430000029 Denomination of invention: Process for extracting metal cobalt from waste hard alloy Granted publication date: 20080423 License type: Exclusive license Record date: 20081119 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Heibei Liulong Hard Alloy Group Co., Ltd. Assignor: Duan Licheng Contract fulfillment period: 2008.10.31 to 2016.12.31 contract change Contract record no.: 2008130000098 Denomination of invention: Process for extracting metal cobalt from waste hard alloy Granted publication date: 20080423 License type: Exclusive license Record date: 20081119 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.30 TO 2015.9.30; CHANGE OF CONTRACT Name of requester: CHANGSHA ZHONGNAN KAIDA POWDER METALLURGY CO., LTD Effective date: 20081119 Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.31 TO 2016.12.31; CHANGE OF CONTRACT Name of requester: HEBEI LIULONG HARD ALLOY GROUP CO.,LTD. Effective date: 20081119 |
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