本文通过测量硫砷铜矿的Zeta电位、硫砷铜矿电极的静电位和哈利蒙特管试验 ,研究了硫砷铜矿的表面性质和可浮性。Zeta电位 -pH曲线表明 ,在pH 2 -12的范围内 ,硫砷铜矿的Zeta电位为负值 (-2 0mV到 -4 5mV) ,并且在pH 5 5和pH 11处有两个峰。从As-H2 O体系的热力学平衡图和硫砷铜矿的Eh -pH图可以推断 ,硫砷铜矿表面的带电基团是由硫代砷酸盐的平衡反应产生的。在试验的pH值范围内 ,硫砷铜矿没有自然可浮性 ,但是 ,在 pH值为 10时 ,用 0 1mg/l异丙基黄药为捕收剂 ,硫砷铜矿的浮选回收率就可以大于 80 %。这说明 ,硫砷铜矿与溶液界面上的成分取决于硫代砷酸盐的化学状态 ,它使硫砷铜矿的可浮性与其它铜矿物的不同。硫砷铜矿不受氧化剂抑制的性质是明显的 In this paper, the surface properties and floatability of arsenic copper mine are studied by measuring the zeta potential of arsenic copper mine, the electrostatic potential of arsenic copper arsenide copper mine and the test of the Harmont tube. Zeta potential-pH curves show that the Zeta potential of pyrethroid copper is negative (-2 0 mV to -4 5 mV) in the pH range of 2 to 12 and that there are two peaks at pH 5 5 and pH 11. From the thermodynamic equilibrium diagram of As-H 2 O system and the Eh-pH diagram of arsenopyrite, it can be inferred that the charged groups on the surface of arsenopyrite are produced by the equilibrium reaction of thiosodium arsenate. In the pH range tested, there is no natural buoyant arsenic copper mine, but at pH 10, with 0 1mg / l isopropyl xanthate as a collector, arsenic copper flotation recovery Rate can be greater than 80%. This shows that the composition of the interface between arsenic and copper and the solution depends on the chemical state of the arsenate, which makes the arsenic copper mine floatability and other copper minerals are different. The properties of arsenic-copper minerals from oxidant inhibition are evident