含方黄铜矿-磁黄铁矿铜硫铁矿的分离工艺

Separation Technological Research on a Copper-pyrite-iron Ore Containing Chalmersite and Monoclinic Pyrrhotite

土耳其某铜硫铁矿,其原有的生产流程为硫化矿混浮—铜硫分离—浮选尾矿磁选回收磁铁矿工艺,因其生产的铜精矿品位过低而开展了新分离试验研究。本分离研究在原矿工艺矿物学研究基础上,对可能影响选矿指标的因素进行了分析。研究过程发现,该原矿中具有强磁性的方黄铜矿及单斜磁黄铁矿的存在是影响选矿指标的最大因素。分离研究在合理的药剂制度上最终确定了硫化矿混浮—硫化矿精矿磁选分离—磁选精矿及尾矿分别进行铜硫分离—混浮尾矿磁选回收磁铁矿工艺。新工艺可获得达入冶标准的铜精矿、硫精矿、铁精矿,极大地提高了原矿的产出价值。

The previous production process of a copper-pyrite-iron ore in Turkey was mixed flotation of sulphide ore-copper sulphur separation-magnetic separation of magnetite from flotation tailings. New separation technological research is conducted because of the low-grade copper concentrate in the previous production process. Based on researches of process mineralogy, possible factors which may affect the beneficiation indexes were analysed. The study found that the presence of ferromagnetic chalmersite and monoclinic pyrrhotite is the most important factor affecting beneficiation indicators. Separation study determines mixed flotation of sulphide ore, magnetic separation of sulphide ore, copper sulphur separation of magnetic and tailings respectively, and magnetic separation of magnetite from flotation tailings on the basis of fine reagent regime. The new technology can obtain copper, sulfur and iron meeting metallurgical standard, which greatly improves the output value of the ore.