COPPER GALVANIC SLUDGE PROCESSING METHOD

摘要

FIELD: metallurgy.SUBSTANCE: charge is prepared by mixing of copper galvanic sludge with sodium carbonate, sodium chloride and with coal or coal and a cassiterite concentrate. Recovery of oxidised sludge metals is performed in a reaction tank by charge melting at the temperature of 1000-1100°C during 1.5 h. The obtained melt is cooled and hardened copper alloy is separated from sludge.EFFECT: increasing an extraction degree of copper from sludges of galvanic copper-plating; reducing the number of impurities as a part of a crude alloy.2 tbl, 3 ex