Title: Method for making black powder
Application Number: 86100842 Application Date: 1986.02.01
Publication Number: 1008076 Publication Date: 1987.01.31
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C09C1/48
Applicant(s) Name: Chengdu Univ. of Science and Technology Address:
Inventor(s) Name: He Lianghui, Qiu Daochang
Attorney & Agent:
Abstract:
     The invention is a black powder making method which uses coal as raw material or main raw material and may replace some applications of carbon black in plastics, coating, dye, printing ink and rubber peces. Anthracite is separated from gangues and powdered by several stages to the grain size less than 500 micrometre and then treated with acid and alkali to take apart soluble impurities. The black powder is produced from the treated coal powder after washing baking and regrinding.
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