Treatment of base metal concentrate by a two-step bioleaching process

摘要

A method of recovering at least one base metal from a concentrate wherein a residue of a primary bioleach of the concentrate, under mesophilic and moderate themophilic conditions, is processed to recover at least one metal, and the base metal is recovered from a solution, produced by a secondary bioleach under thermophilic conditions, of a residue of the metal recovery process.