河南某库存钼尾矿回收钨钼选矿试验

河南某库存钼尾矿钼品位为0.086%、钨品位为0.13%,由于长期堆放,其钼氧化率高达51.76%,而且粒度组成偏细,可浮性较差。为合理开发利用该库存尾矿资源,进行了选矿工艺流程和药剂制度试验研究。结果表明,原矿经过弱磁选除铁—非磁性物脱泥浓缩后,以碳酸钠为调整剂、水玻璃为抑制剂、W-189为捕收剂,采用1粗1精3扫流程浮选获得了Mo品位为0.86%、WO3含量为1.21%的钨钼混合粗精矿,钨钼混合粗精矿浓缩加温调浆后经1粗3精2扫流程精选,获得了Mo品位为12.78%、回收率为54.94%,WO3品位为21.96%、回收率为72.45%的钨钼混合精矿,从而使矿石中钨、钼得到了较好的综合回收。

Beneficiation Experiment of Recovery Molybdenum and Tungsten from a Tailing Pool from Henan

Molybdenum tailing，with molybdenum grade of 0.086%，tungsten grade of 0.13%，is discarding in tailing pool.Due to long-term piled up，the oxidation rate of molybdenum is as high as 51.76%，with fineness particle size distribution，and the floatability is poor.In order to develop and utilize the ore，systematic beneficiation technology process and regime of reagent is carried out.The results indicated that，after iron removal by low intensity magnetic separation-desliming for nonmagnetic products，using sodium carbonate as modifier，sodium silicate as depressor，W-189 as collector，through one roughing，three scavenging，one cleaning flotation operation and Mo-W mixed rough concentrate with Mo grade of 0.86%，WO3 contents of 1.21% is obtained.Through thicken，warming and pulp conditioning，and then one roughing，two scavenging，three cleaning operation dealing with the Mo-W mixed rough concentrate，Mo-W mixed concentrate with Mo grade of 12.78% and recovery of 54.94%，WO₃ contents of 21.96% and recovery of 72.45% is obtained，which realize comprehensive recovery of tungsten and molybdenum. 