PROCESS FOR RECOVERING COPPER FROM A HIGH ACID MIXED METAL SOLUTION

摘要

This invention relates to a process for recovering copper from a high acid mixed metal solution, said high acid mixed metal solution having a pH of about 0.5 or less and comprising copper ions, ions of at least one additional metal and sulfuric acid, said process comprising: (A) separating said high acid mixed metal solution (10) into a first fraction (14) comprising copper ions and ions of said at least one additional metal, and a second fraction (16) comprising said sulfuric acid; (B) separating said copper ions from said first fraction; (C) forming an electrolyte solution comprising said copper ions from step (B); and (D) electrodepositing copper from said electrolyte solution. The copper that is electrodeposited may be in the form of copper powder or copper foil.