Zn-Co sludge treating method

Application Number: 00102775
Application Date: 2000.02.21
Publication Number: 1310242
Publication Date: 2001.08.29
Priority Information:
International: C22B3/14;C22B7/00
Applicant(s) Name: Beijing Non-ferrous Metallurgy Design and Research General Inst.
Inventor(s) Name: Li Guomin;Liu Cheng;Dong Aiguo
Patent Agency Code: 11234
Patent Agent: wan huatang
Abstract The present invention relates to the method of treating Zn-Co sludge at 40-90 deg.c while stirring, adding zinc powder to eliminate impurity, filtering, ammonia evaporation of pure zinc-ammonia liquid, re-filtering and calcination at 400-700 deg.c to obtain active zinc oxide with 99 % over purity. The process of the present invention is simple, low in the anticorrosive requirement of equipment, easy in operation, low in loss and high in metal recovery rate.