Process for non-ferrous metals production from complex sulphide ores containing copper, lead, zinc, silver and/or gold

摘要

Metal sulphide ore is leached by water under a low pressure and oxidizing atmosphere to dissolve zinc and copper, hydrolyze iron to hematite, and leave lead and precious metals as insoluble sulphates. The residue is leached by sodium chloride and calcium chloride to dissolve lead and the precious metals.