Process for purifying natural 3R-type graphite ore


Application Number: 00110587
Application Date: 2000.06.30
Publication Number: 1331048
Publication Date: 2002.01.16
Priority Information:
International: C01B31/04
Applicant(s) Name: Guo Dongzhang
Address:
Inventor(s) Name: Guo Dongzhang;Li Gui;Zhu Guizeng
Patent Agency Code: 21109
Patent Agent: liang yan
Abstract A process for purifying the natural 3R-type graphite ore includes crushing, acid treating with hydrofluoric acid and hydrochloric acid, washing in water, baking, classifying and packing. Its advantages include short technology route, simple operation, and high purity (more than 80% for 3R graphite and 99.9% for fixed carbon).