| Additive roasting-cyanide leaching process was adopted for treating manganese-silver ore. The rotary kiln was continuously operated for 80 hours, and the ore was roasted for 30±5 minutes. The results showed that the content of silver and manganese was 237.73 g/t and 24.68% in the calcine, and that the recovery of silver and manganese was 99.19% and 98.70%, respectively. The resulted calcine was leached in 500 L reactor with a solid liquid ratio of 2:1~2.2:1, 6~15 h of leaching time, and 700 g/t of NaCN. Leaching results showed that the leaching ratio of silver was up to 86.5%, and that the residue met the standards of manganese ore for metallurgy. |