Separating copper and arsenic has always been a major problem in the copper slag flotation process, which influences copper slag utilization and the environmental safety. A comparative study of flash smelting furnace (FSF) slag and its flotation products (concentrate and tailing) reveals the factors affecting the separation of copper and arsenic in the beneficiation process from the perspective of mineralogy and morphology. The elemental fractionation in the process shows a positive correlation of As, Cu and Cd and an obvious correlation between speciation transformation of copper and arsenic was observed. The occurrence of arsenic and copper in FSF slag correlate the key phases of arsenic copper alloys, accounted for 88.91 % of total arsenic-bearing phases and 32.28% of copper-bearing phases. Closely-embeded matte and copper-arsenic alloys incerease the difficulty of the separation suggesting the finer grinding is needed for slag. Arsenic is liberated and oxidized into arsenate compounds while the recombination of As-O and Cu-S happened in the process affecting the selectivity of copper and arsenic. Arsenic fixed in silicate minerals is discharged into tailing which suggested to induce and fix arsenic into silicate minerals can facilitate arsenic removal from concentrate. FSF slag and its flotation concnetrate show risks of some of some of HMs which should be cautiously transported, disposed, and utilized.

铜和砷的分离一直是铜渣浮选过程中的主要问题，这会影响铜渣的利用和环境安全。对闪速熔炉炉渣及其浮选产物（精矿和尾矿）的比较研究从矿物学和形态学的角度揭示了在选矿过程中影响铜和砷分离的因素。该过程中的元素分馏显示As，Cu和Cd呈正相关，并且观察到铜与砷的形态转化之间存在明显的相关性。FSF炉渣中砷和铜的存在与砷铜合金的关键相相关，分别占总含砷相的88.91％和含铜相的32.28％。紧密嵌入的哑光和铜-砷合金增加了分离的难度，表明需要对矿渣进行更精细的研磨。砷被释放并氧化成砷酸盐化合物，而As-O和Cu-S的重组在此过程中发生，从而影响了铜和砷的选择性。固定在硅酸盐矿物中的砷排放到尾矿中，这表明将砷诱导并固定在硅酸盐矿物中可以促进从精矿中去除砷。FSF渣及其浮选物显示出某些HM的风险，应谨慎运输，处置和利用。砷被释放并氧化成砷酸盐化合物，而As-O和Cu-S的重组在此过程中发生，从而影响了铜和砷的选择性。固定在硅酸盐矿物中的砷排放到尾矿中，这表明将砷诱导并固定在硅酸盐矿物中可以促进从精矿中去除砷。FSF渣及其浮选物显示出某些HM的风险，应谨慎运输，处置和利用。砷被释放并氧化成砷酸盐化合物，而As-O和Cu-S的重组在此过程中发生，从而影响了铜和砷的选择性。固定在硅酸盐矿物中的砷排放到尾矿中，这表明将砷诱导并固定在硅酸盐矿物中可以促进从精矿中去除砷。FSF渣及其浮选物显示出某些HM的风险，应谨慎运输，处置和利用。