湖北某铜尾矿资源化利用研究

湖北某铜尾矿中有价组分为WO3、Cu、S、Fe，为实现该铜尾矿的资源化利用，开展了详细的综合回收试验研究。结果表明：① 采用铜硫混合浮选、铜硫混合精矿再磨后铜硫分离浮选工艺流程处理试样，闭路试验可获得产率0.10%、Cu品位13.80%、Cu回收率21.71%的铜精矿以及产率1.22%、S品位44.50%、S回收率50.89%的硫精矿。② 采用2粗2扫1精常温浮选处理铜硫混浮尾矿，常温精矿浓缩至60%，再加温至90 ℃，搅拌、解吸80 min后采用1粗2扫5精加温精选、中矿顺序返回的工艺流程，最终获得产率0.93%、WO3品位15.31%、WO3回收率55.07%的钨精矿产品；该钨精矿进行酸浸提质，最终获得产率0.40%、WO3品位34.19%、WO3回收率53.04%的酸浸钨精矿。③ 针对钨粗选尾矿，采用弱磁选工艺可获得产率3.73%、TFe品位60.45%、回收率15.66%的铁精矿。

Research on Resource Utilization of a Copper Tailing in Hubei

In order to realize the resource utilization of a copper tailings in Hubei,a detailed experimental study on comprehensive recovery was carried out.The results showed that:① The copper concentrate with yield of 0.10%,Cu grade of 13.80% and Cu recovery rate of 21.71% and the sulfur concentrate with yield of 1.22%,S grade of 44.50% and S recovery rate of 50.89% could be obtained in closed circuit test by using copper sulfur mixed flotation and copper sulfur separation flotation process after regrinding of copper sulfur mixed concentrate.② Two roughing,two scavenging and one cleaning were used to treat copper sulfur mixed floating tailings by flotation at room temperature.Next,the room temperature concentrate was concentrated to the concentration of 60%,then heated to 90 ℃,stirred and desorbed for 80 min,followed by one roughing,two scavenging and five cleaning for heating cleaning,middling back in sequence.Finally,the tungsten concentrate with yield of 0.93%,WO3 grade of 15.31% and WO3 recovery rate of 55.07% was obtained.The tungsten concentrate quality was improved by acid leaching.Finally,an acid leaching tungsten concentrate with yield of 0.40%,WO3 grade of 34.19% and WO3 recovery rate of 53.04% was obtained.③ For tungsten roughing tailings,iron concentrate with yield of 3.73%,TFe grade of 60.45% and recovery rate of 15.66% could be obtained by low intensity magnetic separation process.