Process for extracting metal cobalt from waste hard alloy

A technology for hard alloy and metal extraction, applied in the field of hard alloy, to achieve the effect of increasing the contact area and speeding up the electrolysis speed

Inactive Publication Date: 2006-03-22
段立成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the metal cobalt in the cemented carbide cannot be completely extracted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The first way:

[0010] Wash and crush the low-cobalt waste hard alloy with water, grind it into a powder with a particle size of 1--3 microns with a ball mushroom machine, put it in the electrolyte and energize it for electrolysis, so that the metal cobalt is completely dissolved in the electrolyte, and then Metal cobalt is extracted through extraction, heating evaporation, drying and other processes.

[0011] The second way:

[0012] First, put the waste cemented carbide into the electrolyte, and pass through the electric current to electrolyze the cemented carbide. When the waste cemented carbide is electrolyzed into a honeycomb skeleton shape, it is then put forward and ground into a particle size of 1-- The 3 micron powder is electrolyzed again, and the cobalt-containing electrolyte is extracted, heated, evaporated, and dried to extract the cobalt metal.

[0013] In the above two implementations, the waste cemented carbide or the electrolyzed honeycomb skeleton i...

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Abstract

The present invention relates to hard alloy recovering and utilizing technology, and is especially the technological process of extracting metal cobalt from waste hard alloy. The technological process includes the following steps: crushing hard alloy with low cobalt content, grinding in ball mill into fine particle of 1-5 microns, dissolving cobalt inside electrolyte, extracting, heating to evaporate, stoving, etc. The technological process can extract cobalt completely from waste hard alloy with cobalt content lower than 9 %.

Description

technical field [0001] The invention belongs to the technical field of cemented carbide, and in particular relates to a process for extracting metal cobalt from waste cemented carbide. Background technique [0002] In the processing of waste cemented carbide, there are many ways to extract the rare metal cobalt. The method of extracting cobalt by electrolysis is to put the waste cemented carbide into the electrolytic cell, use hydrochloric acid with a concentration of 15% as the electrolyte, use the copper plate as the anode, and use the metal titanium plate as the cathode, and pass an electric current to make the metal cobalt dissolve in the electrolytic cell. In hydrochloric acid, the remaining slag can continue to produce electrolytic tungsten carbide. [0003] It is relatively easy to realize the above-mentioned high-cobalt waste cemented carbide containing more than 9% metal cobalt by electrolysis, that is, to put the waste cemented carbide into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/04C22B3/26C22B7/00C22B23/00
CPCY02P10/20
Inventor 段立成
Owner 段立成
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