PROCESSING OF HIGH-CARBON GOLD-BEARING ROCK

摘要

FIELD: metallurgy.;SUBSTANCE: process comprises graphite flotation and gold extraction by etching with acid solution of thiourea. Note here that, prior to etching, flotation tailings are subjected to dry magnetic separation. Dry magnetic separation is conducted in magnetic field of 800-1000 Oersted with gold concentration in nonmagnetic fraction with gold content of 5.2-5.6 g per ton. Nonmagnetic fraction is subjected to etching with acid solution of thiourea.;EFFECT: reduced specific consumption of reagents at processing, higher process efficiency.;3 ex