某高硫铜矿石的低碱铜硫分离试验研究

Test study on low-basicity separation of sulphur and copper for a high-sulphur and high-copper ore

在对某高硫铜矿石进行工艺矿物学研究的基础上,采用铜硫混合浮选—混合粗精矿再磨—铜硫分离的流程,以DT-4号代替部分石灰为抑制剂进行铜硫分离。结果表明,在原矿含铜0.18%,硫7.43%的条件下,最终可获得含铜为23.48%、含硫为28.71%、铜回收率为86.09%的铜精矿和含硫为47.69%、含铜为0.072%、硫回收率为74.58%的硫精矿,实现了铜硫在较低碱度下的有效分离。

Based on the process mineralogy study on a high-sulfur and high-copper ore, the process was applied that involved mixed flotation of copper and sulphur, regrinding of mixed primary concentrate and then separation of copper and sulfur, in which a part of lime were replaced by DT-4# as the depressor to participate in the separation of copper and sulphur. The results showed： while the raw ore contained 0.18% copper and 7.43% sulfur, the copper concentrate with 23.48% copper, 28.71% sulphur and 86.09% copper recovery as well as the sulphur concentrate with 47.69% sulfur, 0.072% copper and 74.58% sulphur recovery were obtained, thus the effective low-basicity separation of copper and sulphur realized.