| 摘要 |
FIELD: metallurgy; complex processing of copper concentrate. ^ SUBSTANCE: proposed method includes sulphatizing roasting of starting concentrate and leaching-out of cinder at separation of metals; sulphatizing roasting of starting copper concentrate is performed in air at temperature of 500-600°C continued for 980-180 min; cinder thus obtained is leached-out with sulfuric acid solution or water at separation of cake and filtrate; copper is extracted from filtrate by electrolysis. Dried cake is blended with oxidizing agent and chlorides of alkaline and alkaline-earth metals and is subjected to heat treatment at temperature of 450-550°C for obtaining the cake which is leached-out by hydrochloric acid; noble metals are separated from filtrate by sorption method. ^ EFFECT: enhanced efficiency of extraction of metals; reduced power requirements; enhanced ecological safety. ^ 9 cl, 1 dwg, 1 tbl, 3 ex |
