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Patent Searching and Data


Title:
FINE COPPER POWDER, AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JP2011252224
Kind Code:
A
Abstract:

To provide a method by which fine copper powders having uniform particle diameter can be produced in high yield by a disproportionation reaction, and to provide the fine copper powder.

The method for producing fine copper powders by dissolving cuprous oxide in an acid to generate a metallic copper by disproportionation reaction is characterized by reacting while consistently maintaining the pH value of a liquid in the range of 2.0 to 2.5. It is preferable to collect fine copper powders generated by: performing disproportionation reaction comprising dissolving cuprous oxide in sulfuric acid; and reducing copper sulfate remaining in a reaction liquid with hydrazine to precipitate the copper powders. Thereby, the collection rate of the fine copper powders is enhanced.


Inventors:
SATO KAZUSUKE
Application Number:
JP2010000128963
Publication Date:
December 15, 2011
Filing Date:
June 04, 2010
Export Citation:
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Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B22F9/20; B22F1/00
Attorney, Agent or Firm:
千葉 博史