Title:
METHOD FOR PRODUCING ALUMINUM POWDER, AND METHOD FOR REDUCING INORGANIC METAL COMPOUND USING ALUMINUM POWDER
Document Type and Number:
Japanese Patent JP2014201793
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To micronize scrap or ingot-shaped aluminum by a simple and safe method and to use the same for a reducing agent.SOLUTION: Scrap or block-shaped aluminum is dissolved, is thereafter discharged from a heating furnace and is allowed to cool. The surface of the melted aluminum is covered with the powder of an inorganic metal compound for the purpose of reduction, such as an inorganic metal oxide, a hydroxide, or a carbonate, and the same is solidified while being strongly stirred to obtain a mixture of the inorganic metal oxide powder and the aluminum grains. This mixed powder is subjected to pulverization treatment by ball milling or the like to obtain aluminum powder containing the inorganic metal oxide. When the mixing is performed in such a manner that the amounts of the inorganic metal compound and aluminum are regulated, the raw material powder of thermit reaction can be obtained. The quantitative ratio between the raw material powder and inorganic metal compound is stoichiometrically re-blended, and heating is performed. In this way, the inorganic metal compound is reduced to obtain the objective metal.
Inventors:
ABE TOSHIHIKO
ABE TOMOYUKI
MORI HITOSHI
MORI KAZUMI
YASHIMA KENJI
ABE TOMOYUKI
MORI HITOSHI
MORI KAZUMI
YASHIMA KENJI
Application Number:
JP2013079252A
Publication Date:
October 27, 2014
Filing Date:
April 05, 2013
Export Citation:
Assignee:
NIPPON SOZAI KK
International Classes:
B22F9/08; B22F1/02; B22F9/04; C22B5/04; C22B13/02; C22B15/00; C22B19/00; C22B21/02; C22B23/02; C22B26/22; C22B34/32