针对某高铁铜硫矿石的性质，将原矿磨至细度为≤74μm占70%、以碳酸钠为pH调整剂、丁基黄药+丁铵黑药为组合捕收剂混合浮选铜硫，铜硫粗精矿再磨至≤45μm占85%后，主要以新型无机抑制剂DT-2#（次氯酸钙为有效成分）为黄铁矿抑制剂进行铜硫分离，浮选尾矿进行磁选选铁.试验结果表明，采用“铜硫混浮-粗精矿再磨-铜硫分离-浮选尾矿磁选”流程，在原矿含铜0.52%、硫2.31%、铁49.26%的条件下，可获得含铜22.36%、回收率为87.29%的铜精矿，含硫38.43%、回收率为62.88%的硫精矿，含铁66.98%，回收率为91.34%的铁精矿.所用工艺流程简单，选矿指标较佳.%In light of the characteristics of a high iron Cu-S ore, under the condition of <75μm grinding fineness being 70 %,using sodium carbonate as pH adjusting agent ,with butyl xanthate and ammonium butyl as the combination collector of copper sulfide mixed flotation ,iron is recovered from magnetic flotation tailings after the copper sulfide crude concentrate is regrinded to <45 μm which accounts for 85 %, with DT-2# [The active ingredient is Ca (ClO)2]as the new inorganic inhibitor of pyrite to separate copper and sulfide. The test results show that using the process of “copper sulfide mixed flotation-crude concentrate regrinding-copper sulfide separation-magnetic flotation tailings”, copper concentrate, sulfur concentrate and iron concentrate can be obtained containing 22.36 % of Cu with copper recovery rate of 87.29 %,38.43 % of S with sulfur recovery rate of 62.88 %,and 66.98 % of Fe and iron recovery rate of 91.34 % respectively from a feed ore containing 0.52%Cu, 2.31%S and 49.26%Fe. The process is simple to use with a good beneficiation index.
展开▼
