Smelting-acid leaching process is a way to treat high-content arsenic containing copper. However, smelting process makes a low recovery of valuable metals and acid-leaching process makes large amounts of arsenic-iron slag. Arsenic sulphuration volatilization at a low temperature was studied in this paper and valuable metals were recovered with different methods. Arsenic recycled as As_2O_3 was separated from other valuable metals selectively and calcines were treated by acid pressure leaching. Indium and copper in leaching liquor were made into sponge indium/copper after the processes of extraction-re-extraction-displacing process (ERD process) and displacing process. ZnSO_4·7H_2O was collected after concentrating while recovering zinc. Metals, such as tin, bismuth and lead, were recycled as raw materials for tin metallurgy.
展开▼
