METHOD FOR UTILISING SULPHUR-CONTAINING WASTE GENERATED IN LEACHING OF SULPHIDE CONCENTRATES

摘要

The invention relates to a method for treating the leaching residue containing iron and sulphur that is generated in the leaching of a sulphidic non-ferrous metal concentrate. The sulphur-containing leaching residue or part of it is routed to fluidized bed treatment, in which the sulphur contained in the leaching residue is burnt to form sulphur dioxide and the valuable metals contained in the leaching residue are recovered, mostly as oxides, and routed to a metal recovery process.