Rückgewinnung von Metallwerten aus Feststoffen durch Aufschluß in einem Schwefelsäuremedium enthaltend ein Reduktionsmittel

摘要

A process for recovering metal values from a metal containing material including the metal values comprising digesting the metal containing material in a sulfuric acid solution comprising sulfuric acid, a reducing agent, and a carbon source, heating the digestion mixture and separating the resulting solution from the remaining solids. The sulfuric acid solution may additionally include hydrofluoric acid (HF) as a source of fluoride ion.