西藏某超低品位铜钼矿强化浮选工艺技术研究

Study on the strengthening flotation technology of ultralow copper-molybdenum ore in Tibet

西藏某铜钼矿铜品位0.29%,钼品位0.0082%,属超低品位铜钼矿。该矿石中主要金属矿物有黄铜矿、辉钼矿、黄铁矿等,脉石矿物主要有石英和白云母。根据矿石性质,本文研究在粗选时使用新型高效硫化矿捕收剂BKAP,精选时使用新型高效黄铁矿抑制剂BKYN,采用全开路-多次粗选工艺流程,对矿石中的含铜矿物进行强化浮选捕收,最终实验室小型闭路试验获得了铜品位20.11%,铜回收率80.43%的铜精矿,其中含钼0.51%,钼回收率73.18%。

A copper-molybdenum ore with Cu grade of 0.29%,Mo grade of 0.0082%,belongs to ultralow grade copper-molybdenum ore.The main metal mineral in ore are chalcopyrite,molybdenite and pyrite;and the gangue minerals are mainly quarze and muscovite.According to the ore properties,this paper uses the new type and high efficient sulphide ore collector BKAP in roughing,and BKYN,which is a new type and high efficient depressant on pyrite,in cleaning,adopts full open-multiple rougning process,to strengthen collecting of copper minerals.The final laboratory closed-circuit test obtained the copper concentrate with Cu 20.11%,recovery Cu 80.43%,and Mo 0.51%,recovery Mo 73.18%.