摘要
研究用浸出—沉淀法从浮选尾矿中回收镍。尾矿中的镍矿物多为难选矿物 ,浮选镍精矿品位 2 75 % ,回收率18 6 3%。用浸出—沉淀法处理浮选尾矿 ,浸出条件为 :酸度 0 5 %～ 1% ;浸出时间 2小时 ;添加合适的氧化剂 ;搅拌浸出。沉淀获得含镍 2 0 %～ 30 %的镍硫化物 ,回收率为 6 0 %～ 75 %。静置浸出回收率低 ,但可采用堆浸 。
Leaching depositing process used in recovering nickel as sulfide from floatation tailings is investigated Only 2 75% Ni contained in concentrate and 18 63% recovery are obtained by floatation from the tailings because of nickel minerals characteristics The optimal condition for leaching is 0 5%～1% acidity; 2h retention time; oxidizing agent; properly stirring The sulfide depositing from leaching solution contains 20%～30% nickel, and recovery of nickel reaches 60%～75% Although leaching without stirring has relatively low nickel recovery, it can be applied to less expensive heap leaching
出处
《有色金属》
CSCD
2001年第4期26-28,共3页
Nonferrous Metals
