湖南某钨多金属矿选钨新工艺研究

Research on New Processing Technology of Tungsten from Certain Polymetallic Ore in Hunan

湖南某钨多金属矿采用磁选铁—浮选硫化矿—钨粗选—加温精选工艺流程回收其中的铁、硫化矿和钨,其中钨精矿品位65%以上,回收率在65%~70%,其中钨加温精选作业添加了大量的水玻璃,药剂成本高、能耗高、环保压力大。针对该问题,本文进行了详细的试验研究,最终推荐磁选铁—浮选硫化矿—钨粗选—钨粗精矿重选联合工艺流程,其闭路试验结果为钨精矿含钨65.89%、回收率72.09%。

The flowsheet of magnetic seperation-sulfide flotation-tungsten flotation-heating concentration process was applied to recover iron, sulfide, and tungsten from certain polymetallic ore in Hunan. The tungsten concentrate containing WO3 more than 65% with recovery 65% -70% was obtained. A large amount of water glass was added to the tungsten heating concentration stage, which led to high reagent cost, high energy consumption and environmental pollution. In order to solve the problem, systematic study was carried out. Finally, the flowsheet of combined magnetic separation-sulfide flotation-tungsten flotation-rough concentrate gravity separation was adopted. The tungsten concentrate of 65.89% WO3 with recovery 72. 09% was obtained.