JPS5550408A - Production of cobalt powder - Google Patents
Production of cobalt powderInfo
- Publication number
- JPS5550408A JPS5550408A JP12372278A JP12372278A JPS5550408A JP S5550408 A JPS5550408 A JP S5550408A JP 12372278 A JP12372278 A JP 12372278A JP 12372278 A JP12372278 A JP 12372278A JP S5550408 A JPS5550408 A JP S5550408A
- Authority
- JP
- Japan
- Prior art keywords
- salt
- inorganic
- aqueous solution
- acid
- cobalt
- 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
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To produce the high purity cobalt of fine bar form as a binding material for super hard sintered alloy by hydrogen-reducing the basic cobalt carbonate formed from inorganic cobalt salt under high temperature.
CONSTITUTION: To the aqueous solution of Na salt, K salt or NH3 salt of hydrogen carbonic acid or the aqueous solution of Na2CO3, K2CO3, (NH4)2CO3 or the like in which CO2 is saturated under pressure is added the inorganic Co salt containg Co of 0.3W0.5 based on weight of CO3 in said aqueous solution. Inorganic Co salts such as sulfuric acid, nitric acid, hydrochloric acid, acetic acid, etc. are used for the inorganic CO salt and its aqueous solution is mixed and stirred at 40°C or under to make its final pH to 7W7.4. The basic carbonate of Co prepared through filteration and washing of the precipitate having been thus formed is dried at 80W130°C in a still state. Next, it is reduced to metal Co in the hydrogen gas flow of 500W700°C. This has the fine bar-form crystals of 1W2μ in diameter and 10W20times these in length and is suited as the metal for binding of super hard sintered alloy.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12372278A JPS5550408A (en) | 1978-10-06 | 1978-10-06 | Production of cobalt powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12372278A JPS5550408A (en) | 1978-10-06 | 1978-10-06 | Production of cobalt powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5550408A true JPS5550408A (en) | 1980-04-12 |
Family
ID=14867734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12372278A Pending JPS5550408A (en) | 1978-10-06 | 1978-10-06 | Production of cobalt powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550408A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0770693A1 (en) * | 1995-10-27 | 1997-05-02 | H.C. Starck GmbH & Co. KG | Ultrafine cobalt metal powder, method of preparing same and also use of cobalt metal powder and of cobalt carbonate |
CN104722778A (en) * | 2013-12-19 | 2015-06-24 | 荆门市格林美新材料有限公司 | Method of synthesizing low-oxygen superfine cobalt powder |
CN108526476A (en) * | 2018-04-08 | 2018-09-14 | 南京寒锐钴业股份有限公司 | A kind of preparation method of diamond tool cobalt powder |
CN109692969A (en) * | 2019-03-04 | 2019-04-30 | 江苏萌达新材料科技有限公司 | A kind of preparation method of hypoxemia superfine spherical cobalt powder |
-
1978
- 1978-10-06 JP JP12372278A patent/JPS5550408A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0770693A1 (en) * | 1995-10-27 | 1997-05-02 | H.C. Starck GmbH & Co. KG | Ultrafine cobalt metal powder, method of preparing same and also use of cobalt metal powder and of cobalt carbonate |
AU714709B2 (en) * | 1995-10-27 | 2000-01-06 | H.C. Starck Gmbh & Co. Kg | Ultrafine cobalt metal powder, process for the production thereof and use of the cobalt metal powder and of cobalt carbonate |
CN100352583C (en) * | 1995-10-27 | 2007-12-05 | H·C·施塔克公司 | Ultrafine cobalt metal powder, process for production thereof and use of cobalt metal powder and of cobalt carbonate |
CN104722778A (en) * | 2013-12-19 | 2015-06-24 | 荆门市格林美新材料有限公司 | Method of synthesizing low-oxygen superfine cobalt powder |
CN104722778B (en) * | 2013-12-19 | 2017-07-25 | 荆门市格林美新材料有限公司 | A kind of synthetic method of hypoxemia super-fine cobalt powder |
CN108526476A (en) * | 2018-04-08 | 2018-09-14 | 南京寒锐钴业股份有限公司 | A kind of preparation method of diamond tool cobalt powder |
CN109692969A (en) * | 2019-03-04 | 2019-04-30 | 江苏萌达新材料科技有限公司 | A kind of preparation method of hypoxemia superfine spherical cobalt powder |
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