某锡石多金属硫化矿脱硫试验的研究

锡石多金属硫化矿的脱硫效果直接影响后续锡回收的相关作业,根据矿石的特性,研究了锡石多金属硫化矿高浓度浮选脱硫。研究表明粗颗粒浮选中高矿浆浓度比低矿浆浓度浮选有较大的优势,通过中矿单独处理,中矿未返回粗选作业,减少中矿循环量,简化浮选流程,加快硫化矿浮选速度,提高脱硫效率。粗选高浓度浮选脱硫闭路试验得到精矿中锌、铅回收率分别为94.75%、85.52%。

Study on the Desulfurization of Poly-metallic Sulphide Ore Containing Cassiterite

For poly-metallic sulphide ore which contains cassiterite, desulfurization result has a direct effect on the subsequent operations of recovering of Sn. Based on the property of poly-metallic sulphide ore, desulfurization experiments through high concentration flotation were conducted. The test results shown that the high concentration was better than the low concentration in the flotation separation of coarse mineral particles. By dealing with the middlings individually, reducing the circulation volume of middlings and simplifying the flotation flowsheet, sulfide ore flotation velocity was increased and the efficience of desulfurization was strengthened as well. Eventually, through closed circuit desulfurization experiment, the recovery of Zn and Pb of the concentrate was 94.75% and 85.52, respectively.