摘要
新疆某铁尾矿中钴含量为0.038%,钴主要赋存于黄铁矿中,为了有效回收此部分钴,进行了详细的选矿试验研究,结果表明:当磨矿细度为-0.074 mm占45%时,在粗选石灰用量2 000 g/t、硫酸亚铁用量300 g/t、丁基黄药用量100 g/t、2号油用量80 g/t的条件下,采用两次粗选一次精选两次扫选的闭路浮选流程,可以获得含Co 0.44%、含S 32.72%的合格钴硫精矿,Co回收率达85.58%。试验工艺可为同类资源回收钴提供参考。
The cobalt content in an iron tailings in Xinjiang is 0.038% and mainly exists in pyrite. The test results showed that the optimal conditions were grinding fineness(calculated as-0.074 mm) of 45%, lime dosage of 2 000 g/t for roughing, ferrous sulfate dosage of 300 g/t, butyl xanthate dosage of 100 g/t, and 2# oil dosage of 80 g/t. Through the process of two stages of roughing, two stages of scavenging and one concentrating, the cobalt-sulfur concentrate containing 0.44% Co and 32.72% S with a Co recovery of 85.58% was obtained. Therefore, this valuable associated resource could be effectively recovered.
引文
[1] 美国地质调查局.钴统计数据[EB/OL].http://minerals.usgs.gov/minerals/pubs/commodity/cobalt/,2002-2012.
[2] 刘彬.中国钴资源产业形势与对策建议[J].资源与产业,2014(6):113-119.
[3] 王奉水.新疆某铁尾矿综合回收钴、硫、铁的试验研究[J].现代矿业,2009(11):40-43.
[4] 邓杰.钒钛磁铁矿选铁尾矿中硫钴资源综合回收研究[J].有色金属(选矿部分),2015(2):30-33.
[5] 沈旭.国外某铁金钴矿选矿试验研究[J].中国矿业,2015(12):136-141.
[6] 王淀佐.硫化矿物无捕收剂浮选对经典浮选理论的挑战[J].有色金属,1992(2):22-26.
[7] 王竹生.石灰在黄铁矿浮选中的作用[J].化工地质,1981(1):9-11.
[8] 赵军伟.硫化矿浮选电化学研究现状[J].矿产保护与利用,2003(4):32-36.