| Considering the occurrence features of gold in low-grade microgranular gold mine, high- pressure oxidation-cyanide leaching process was used for treating its flotation concentrate. The effects of temperature, liquid-solid ratio and oxidation time, during the process of high-pressure oxidation, on pre- treatment were investigated crucially. The pretreatment slag was ground and leached with sodium cyanide. The leaching rate of gold, for flotation concentrate, was 94.30%, and the residue rate was only 10.88%. |
