Overview of tungsten tailings re-election

Tungsten is often associated with many metals and non-metallic mineral ore symbiotic, so Tailings selected from tungsten, certain metals can be recovered non-metallic minerals or ore. As the main tungsten-producing country in China, eight tungsten-selecting plants have recovered molybdenum from tungsten tailings. For example, the bleaching tailings of the Wutang Tungsten Mine contain 0.0992% MoO ₃ , and after flotation, the molybdenum concentrate containing 47.83% MoO ₃ is obtained, the recovery rate is 83%, and the output value of the recovered molybdenum accounts for 18% of the total output value of the plant; election bismuth recovery rate of 34.46%. The tungsten tailings from Xiangdong Tungsten Mine contain 0.18% Cu. After grinding, the copper is obtained by flotation of copper to obtain concentrates containing 14% to 15% of Cu. The tungsten ore stellite ore dressing tailings contain 17.5% fluorite , which is produced by flotation. A fluorite concentrate containing 95.67% of CaF ₂ and a recovery rate of 64.93%. Brain wolframite Kowloon tailings re-election with BeO0.05%, accounting for 92.96% of beryllium ore containing amount, using alkaline roughing, selection acid method, flotation output with BeO8.23%, the recovery rate of 63.34% Beryl concentrate.

The grade of associated silver in quartz vein black tungsten ore in China is very low, generally 1~2g/t, and the high one is only 10g/t. Although the grade is very low, most of the silver enters the mixed sulfide mineral concentrate with sulfide minerals. Nearly 50% of the silver is lost in the sulfide ore flotation silver mine during separation. Tungsten Iron Mountain ridge this part Sulfide Ore Flotation test recovery of silver, silver-containing grade obtained 808g / t, the recovery rate of 76.05% of the bismuth-containing silver concentrate, leaching using ferric hydrochloric acid solution, and finally A sponge crucible and a silver-rich slag are obtained.