A HYDROMETALLURGICAL METHOD FOR LEACHING BASE METALS

摘要

A Hydrometallurgical method for leaching base metals, said method comprising the method steps of: i) combining an oxide ore material with a sulphide ore or concentrate in the presence of acid to form a slurry; and ii) leaching the slurry in a pressure acid leach (PAL) circuit to produce a leached autoclave discharge liquor, wherein the acid concentration in the slurry is sufficient to ensure some iron remains in its oxidised (ferric) form in the presence of the sulphide ore or concentrate.