云南某含钨硫精矿选矿试验研究

针对云南某含钨硫精矿进行了综合回收钨的选矿试验,磁选脱硫试验可以有效脱除产率达44.02%的磁黄铁矿,获得硫品位36.68%,硫回收率58.89%的硫精矿及WO_3品位2.27%,WO_3回收率98.27%的非磁性产品。非磁性产品经浮选抑硫选钨后可获得WO_3品位10.31%,WO_3回收率72.86%的钨粗精矿。钨粗精矿经加温精选后可以获得WO_3品位63.17%,WO_3回收率62.82%的钨精矿。试验结果表明,采用"磁选脱硫—抑硫选钨—加温精选"工艺可以综合回收给矿中的钨。

Research on Mineral Processing Technology of a Tungsten Contained Sulfur Concentrate of Yunnan

Experiments to comprehensively recover tungsten were conducted in view of the properties of sulfur concentrate which contained tungsten. Magnetic separation of desulphurization could efficiently remove 44.02% of the pyrrhotite, producing a sulfur concentrate with sulfur grade and recovery of 36.68% and 58.89%, respectively, and a non-magnetic product with tungsten trioxide grade and recovery of 2.27% and 98.27%, respectively. Suppression of sulfur and flotation of tungsten obtained a rough tungsten concentrate with tungsten trioxide grade and recovery of 10.31% and 72.86%, respectively. After heating and concentration, the rough tungsten concentrate yielded a tungsten concentrate with tungsten trioxide grade and recovery of 63.17% and 62.82%, respectively. Results suggested that by adopting the technological process of Magnetic separation of desulphurization- Suppression of sulfur and flotation of tungsten- Heating and concentration, tungsten could be effectively recovered.