Of copper ores oxides which are difficult to beneficiated

摘要

The method provides for preparation of a pulp, its sulphidizing and floatation. The sulphidizing of the pulp is effected with melted sulphur at a temperature of 115-180 DEG C and at a pressure of 1.5-10 atm in the presence of sodium sulphate or sodium chloride at a mass ratio between the sulphur and the oxidized copper of (0.2-1.5):1.