Production and producing apparatus for super fine cobalt powder by circulating technology

A technology of superfine cobalt powder and manufacturing method, applied in the field of cobalt powder manufacturing

Active Publication Date: 2006-08-16
JINGMEN GEM NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shape of the existing cobalt powder is irregular, and there is not a set of methods that can well control the particle siz

Method used

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  • Production and producing apparatus for super fine cobalt powder by circulating technology
  • Production and producing apparatus for super fine cobalt powder by circulating technology
  • Production and producing apparatus for super fine cobalt powder by circulating technology

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0095] Example 1:

[0096] The process flow chart of the manufacturing method for producing ultrafine spheres by the circulation technology of this embodiment is shown in figure 1 . The waste material (secondary coarse cobalt material) used in this embodiment is:

[0097] 1. Waste nickel-metal hydride / nickel-cadmium batteries and waste materials and side materials from the production process. Such waste materials contain 1.0-15% cobalt; other components are Ni, Fe, Cd, Zn, etc., Ni: 10- 60%, Fe: 1-10%. Cd: 0.1-10%, Zn: 0.1-10%

[0098] 2. Waste lithium-ion batteries and waste materials and side materials from the production process. In this type of waste materials, the content of Co is 5-50%, and the other components are Ni, Li, graphite, Mn, etc., Ni: 1-20%, Li : 1-20%. Graphite: 1-30%, Mn: 1-30%

[0099] Step 1: Dissolve

[0100] Add sulfuric acid or hydrochloric acid to the secondary cobalt-containing waste or cobalt slag, the concentration of which is 10-98% sulfuric acid or ...

Example Embodiment

[0175] Example 2:

[0176] This embodiment provides a manufacturing method for producing ultra-fine spheres by recycling technology. The waste materials used in this embodiment are:

[0177] 1. Waste catalyst in the diamond industry. This type of waste contains Co: 1-10%, Ni: 10-40%, Mn: 10-50%, trace amounts of Fe, Al, etc.

[0178] Step 1: Dissolve

[0179] Add hydrochloric acid to the secondary cobalt-containing waste or cobalt slag, the concentration of which is 5-30%, (weight percentage), and the amount of addition varies depending on the raw material, which is 100%-150% (weight percentage) (for waste Calculate the stoichiometric equivalent of the total amount of all metals), dissolve it, and the cobalt in the waste will form soluble cobalt chloride CoCl 2 ; Other components in the waste are also dissolved in hydrochloric acid to form soluble chlorides, thereby forming crude cobalt chloride CoCl 2 Solution

[0180] Since the raw materials used in this embodiment have many imp...

Example Embodiment

[0224] Example 3:

[0225] The secondary raw material used in this embodiment is cemented carbide scrap block, and the process flow chart is shown in image 3 As shown, the dissolution process uses an electrolytic dissolution method.

[0226] A hydrochloric acid solution with a concentration of 1.5-5 g equivalent / liter is injected into an electrolytic cell, and an anode basket made of a polyvinyl chloride perforated plate is set in it, and cemented carbide scrap blocks are placed in the basket as the anode. A conductive plate is inserted into the electrolytic cell as a cathode, which can be a graphite plate, preferably a titanium metal plate. The cathode and anode are connected to a DC power source. The tank voltage is controlled at 1.5-4.0V, and the current density is 50-300 A / m 2 When the concentration of hydrochloric acid in the electrolytic cell is always maintained at 1.5-5 g equivalent / liter, when its concentration drops during the electrolysis process, add hydrochloric acid ...

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Abstract

A process for preparing superfine spherical or fibrous Co particles from used battery by the circulation technique includes such steps as extracting twice for purifying, atomizing, hydrolyzing, depositing to obtain the Co compound precursor, and exploding for thermal reduction at multiple temp segments to obtain the superfine Co particles (0.1-0.2 microns) used for power battery and powder metallurgy. Its apparatus is also disclosed.

Description

technical field [0001] The present invention provides a method for manufacturing cobalt powder, especially a method for producing ultra-fine cobalt powder by recycling technology; the further object of the present invention is to provide the equipment used in the above-mentioned manufacturing method. Background technique [0002] Metal cobalt powder is a world-recognized strategic metal material, and has been a guest of the London Metal Futures Exchange for decades. In the past five years, due to the extensive use of metal cobalt powder in high-energy batteries, hard alloys, military industries and other fields, there has been a worldwide shortage of cobalt. It can be said that whoever masters cobalt resources and the manufacturing technology of related products will have the initiative in many key industrial fields such as chemical energy, communications, and military industry. [0003] Ultrafine cobalt powder material is one of the advanced representatives in the field of...

Claims

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Application Information

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IPC IPC(8): B22F9/08
Inventor 许开华聂祚仁何显达何广缪
Owner JINGMEN GEM NEW MATERIAL
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