METHOD OF SELECTIVE DISSOLUTION OF THE NON-FERROUS METALS CONTAINED IN PYRITIC ORES

摘要

1495854 Extracting non-ferrous metals from pyritic ores SOC MINI RE ET METALLURGIQUE DE PENARROYA 24 Feb 1975 [28 Feb 1974] 7717/75 Heading C1A A method of selective dissolution of the non- ferrous metals contained in a pyritic ore comprises crushing the ore, introducing the crushed ore at a temperature above 20 C. into a reaction vessel containing a solution of a chloride of iron or copper, and injecting gaseous chlorine into the reaction vessel at a rate such that the oxidationreduction potential remains between 300 and 700 uV w.r.t. hydrogen and the pH is controlled at - 1 to + 2 for iron and - 1 to +5 for copper. The contents of the vessel are preferably stirred while the crushed ore is being introduced.