某含锡尾矿锡石浮选试验研究

Experimental study on flotation of cassiterite from a tin-bearing tailings

云南某锡铜硫化矿的重选尾矿,生产采用摇床重选的方法对其进行回收,存在作业效率低等问题。为了提高尾矿再选作业回收率,降低丢尾锡品位,对某高锡原矿的重选尾矿开展了锡石浮选试验研究。试验结果表明,采用"旋流器脱粗—旋流器脱泥—除硫浮选—锡石浮选"工艺,获得了锡精矿锡品位4.05%、锡石浮选作业回收率63.48%、对重选尾矿回收率19.46%的指标。与原重选工艺相比,采用浮选工艺选别锡尾矿,作业效率得到了提高,并对同类别尾矿资源的再利用具有一定的借鉴意义。

Table concentrator gravity separation is adopted for recovery of the gravity separation tailings of a tin-copper sulfide ore from Yunnan,which has the problem of low operation efficiency.In order to improve the operation recovery rate of tailings reconcentration and reduce the tin grade of tailings,the cassiterite flotation experiments on the tailings from a high tin raw ore were carried out.The test results show that Sn grade of tin concentrate of 4.05%,operation recovery of cassiterite flotation of 63.48%and recovery of the gravity separation tailings of 19.46%were obtained with adoption of hydrocyclone de-coarsening-hydrocyclone de-slime-de-sulfur flotation-cassiterite flotation process.By using of the flotation process for tin tailings,the operation efficiency was improved comparing to the original gravity separation process,and has a certain reference significance for the re-utilization of the same kind of tailings resources.