广西某铁闪锌矿为超高铁闪锌矿,磁黄铁矿含量高。在矿石性质及浮锌抑硫试验基础上,进行预先脱硫-浮锌试验。结果表明:采用“预先脱硫-浮锌”流程方案获得了更好的分选指标,在原矿锌品位为12.47%时,锌精矿品位为49.62%,锌回收率为93.25%,优于“抑硫浮锌”流程的试验指标,达到了试验预期效果。 An iron sphalerite in Guangxi is a high-speed line sphalerite with high pyrrhotite content. On the basis of the properties of ore and the zinc-depressurization test, pre-desulfurization-float zinc test was carried out. The results showed that better sorting index was obtained by the scheme of “pre-desulfurization-float zinc” process. When the zinc grade was 12.47%, the grade of zinc concentrate was 49.62% and the zinc recovery was 93.25%, which was better than “Sulfur-suppressing zinc” process test indicators, to test the expected results.