细粒复合铅-锌矿的浮选动力学表明,闪锌矿在方铅矿浮选时的后期显示出相当大的可浮性,导致锌损失在铅精矿中。X-射线光电子分光镜(XPS)检验了第二段铅粗选后期得到的铅精矿。结果表明,表面的铅/锌原子比明显高于铅精矿。显示了由于矿浆中铅离子的活化作用导致闪锌矿的上浮。检验浸到浮选矿浆和其他含铅离子溶液中的闪锌矿矿样,进一步表明了活性机理。XPS分析表明,闪锌矿表面存在相当数量的铅。将此矿样先浸在矿浆中后再浸在黄原酸盐溶液中,矿样的傅里叶转换红外谱线(FTIR)表明有黄原酸铅和二黄原酸铅存在。按照文献中的热力学资料,讨论了所提出的活化机理。 The flotation kinetics of the fine-grained lead-zinc ore shows that sphalerite shows considerable flotation during the late galena flotation, resulting in the loss of zinc in the lead concentrate. The X-ray photoelectron spectroscopy (XPS) examined the lead concentrate obtained in the second stage of lead roughering. The results show that the surface lead / zinc atomic ratio was significantly higher than the lead concentrate. Shows the sphalerite floating due to the activation of lead ions in the slurry. Testing the sphalerite samples immersed in flotation slurries and other lead-containing solutions further demonstrated the active mechanism. XPS analysis shows that there is a significant amount of lead on the surface of the sphalerite. The ore samples were first soaked in the slurry and then dipped in the xanthate solution. The FTIR spectra of the samples showed the presence of lead xanthate and lead xanthate. According to the thermodynamic data in the literature, the proposed activation mechanism is discussed.