METHOD FOR SEPARATING COBALT - MITSUBISHI MATERIALS CORP

Title:

METHOD FOR SEPARATING COBALT

Document Type and Number:

Japanese Patent JP2016089209

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a method of efficiently separating and recovering cobalt from a cobalt-containing material such as carbide tool waste.SOLUTION: There is provided a method for separating cobalt characterized in that a carbon material is added to a cobalt-containing waste and is subjected to reduction roasting at 850°C or higher in a nonoxidizing atmosphere, the roasted matter is made into slurry, and the cobalt included in the slurry is subjected to magnetic selection. Preferably, in the cobalt-containing waste being the residue obtained by leaching and separating tungsten from the oxide roasted matter of the super-hard waste, the reduction roasted matter is pulverized and is added with a dispersant to make slurry, and magnetic selection is performed at the magnetic force of magnetic flux density of about 1,000 gauss.SELECTED DRAWING: Figure 1

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Inventors:

NISHIMURA KENJI
KAWASAKI HAJIME
HAYASHI HIROSHI
TOKORO CHIHARU
OKADA SHINTARO

Application Number:

JP2014223303A

Publication Date:

May 23, 2016

Filing Date:

October 31, 2014

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP
UNIV WASEDA

International Classes:

C22B23/02; B03C1/00; B09B3/00; B09B5/00; C22B1/00; C22B1/02; C22B5/10; C22B7/00; C22B23/00

Attorney, Agent or Firm:

Hiroshi Chiba

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