Abstract:An alkaline carbonate copper-bearing gold mine was treated by ammonium cyanide leaching process. The results show that the optimum conditions include particle size of -0.074 mm of 95%, lime dosage of 4.0 kg/t, dosage of ammonium sulfate of 8.0~9.0 kg/t, total dosage of sodium cyanide of 0.5~0.7 kg/t, cyanide leaching time in roller bottles of 52~72 h, and adsorption time of 20~24 h with activated carbon density of 10 g/L. After 12 times cyclic test, the average gold leaching rate is about 86.0%, the final copper-gold loaded carbon ratio is about 2.0, and the gold adsorption rate is nearly 100% without gradual accumulation of copper and TDS.