CN1163491A - Production of super fine cobalt powder for battary by natural cobalt oxalate reduction - Google Patents
Production of super fine cobalt powder for battary by natural cobalt oxalate reduction Download PDFInfo
- Publication number
- CN1163491A CN1163491A CN96118131A CN96118131A CN1163491A CN 1163491 A CN1163491 A CN 1163491A CN 96118131 A CN96118131 A CN 96118131A CN 96118131 A CN96118131 A CN 96118131A CN 1163491 A CN1163491 A CN 1163491A
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- Prior art keywords
- cobalt
- powder
- natural
- cobalt powder
- production
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Electrode And Active Subsutance (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention uses carbon monoxide gas, produced by the heated decomposition of cobalt oxalate, as reductant and produces superfine cobalt powder through the reaction in reduction furnace. With simple production process and without hydrogenation equipment, the present invention has low investment, low power consumption and stable product quality.
Description
The invention relates to a method for manufacturing cobalt powder.
The nickel-metal hydride battery is a new industry in China, and the cobalt powder is a main raw material of the nickel-metal hydride battery and is a main factor of the discharge capacity and the activity of the nickel-metal hydride battery. In the non-ferrous metal industry, the hydrogen reduction method is generally adopted for preparation, and the reaction formula is as follows: (1) (2) if direct reduction with cobalt hay was used, the reaction was: (3) the cobalt powder manufactured by the formulas (1) and (2) has the granularity which is difficult to reach below 1 mu, has low activity and is difficult to meet the process requirements of rechargeable batteries
Although the drill powder produced by the reaction of the formula (3) has finer granularity than the cobalt powder produced by the reaction of the formulas (1) and (2), the Fsss granularity is still difficult to reach below 1 mu, the activity is also low, and the process requirements of the rechargeable battery are still difficult to meet.
The invention aims to provide a method for manufacturing cobalt powder without hydrogenation reduction of oxalate diamond.
The invention uses the carbon monoxide gas decomposed by the cobalt oxalate itself in the heating process as the reducing agent, and the reaction is carried outThe formula is as follows:
the reaction is carried out in a reduction furnace.
The invention has simple production process, can save hydrogenation equipment, saves equipment investment, has low energy consumption and stable product quality.
The examples are as follows:
in a double-tube reduction furnace, 1.6Kg of cobalt oxalate is fed into each boat (the size of the boat is 400 multiplied by 500 multiplied by 45mm), the temperature of the first, second and third sections is controlled to be 450 ℃, 3 boats are fed every 45 minutes, and the particle size of the produced cobalt powder Fsss is 0.7 mu.
Claims (2)
1. A natural reduction method for producing superfine cobalt powder for batteries by using cobalt oxalate is characterized in that carbon monoxide gas decomposed in the heating process of cobalt oxalate is used as a reducing agent, and the reaction formula is as follows:
the reaction is carried out in a reduction furnace.
2. The method of claim 1, wherein 1.6Kg of cobalt oxalate is fed into each boat (boat size 400X 500X 45) in a double tube reduction furnace, the temperature of the first, second and third sections is controlled to 450 ℃, 3 boats are fed every 45 minutes, and the Fsss particle size of the produced cobalt powder is 0.7 μ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118131A CN1163491A (en) | 1996-04-24 | 1996-04-24 | Production of super fine cobalt powder for battary by natural cobalt oxalate reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118131A CN1163491A (en) | 1996-04-24 | 1996-04-24 | Production of super fine cobalt powder for battary by natural cobalt oxalate reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1163491A true CN1163491A (en) | 1997-10-29 |
Family
ID=5124819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96118131A Pending CN1163491A (en) | 1996-04-24 | 1996-04-24 | Production of super fine cobalt powder for battary by natural cobalt oxalate reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163491A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374231C (en) * | 2006-04-06 | 2008-03-12 | 北京工业大学 | Preparation method of nano-cobalt powder |
| CN102321797A (en) * | 2011-10-10 | 2012-01-18 | 攀枝花市立宇矿业有限公司 | Method for extracting cobalt from vanadic titanomagnetite and preparing superfine cobalt powder |
| CN105797785A (en) * | 2016-04-15 | 2016-07-27 | 西安向阳航天材料股份有限公司 | Pre-reduction type high-temperature methanation catalyst and preparation method thereof |
-
1996
- 1996-04-24 CN CN96118131A patent/CN1163491A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374231C (en) * | 2006-04-06 | 2008-03-12 | 北京工业大学 | Preparation method of nano-cobalt powder |
| CN102321797A (en) * | 2011-10-10 | 2012-01-18 | 攀枝花市立宇矿业有限公司 | Method for extracting cobalt from vanadic titanomagnetite and preparing superfine cobalt powder |
| CN105797785A (en) * | 2016-04-15 | 2016-07-27 | 西安向阳航天材料股份有限公司 | Pre-reduction type high-temperature methanation catalyst and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |