从硫精矿中浮选回收铅锌混合精矿的试验研究及工业应用

云南某高硫铅锌矿选矿厂硫精矿含铅、锌较高，铅、锌主要分别赋存在方铅矿和闪锌矿中；硫精矿中方铅矿、闪锌矿的粒度分别以微粒、细粒为主，且多为连生体，但闪锌矿的单体解离度相对较好。为综合回收该硫精矿中的铅、锌金属，以石灰为黄铁矿抑制剂、硫酸铜为闪锌矿活化剂及DF-341为捕收剂，经1次粗选、2次扫选—粗精矿再磨后4次精选的工艺流程，粗精矿再磨细度-45 μm占92%，获得了产率为3.16%、铅锌品位之和为54.96%的铅锌混合精矿。基于推荐的工艺流程，优化确定了合理的选矿工艺并选择了先进适用的选矿设备，建设了700 t/d再选车间投入生产使用，取得了较好的效益。 

The Experimental Research and Application of Flotation Recovering Pb-Zn Mixed Concentrate from the Sulfur Concentrate

The sulfur concentrate of a certain high sulfur lead-zinc mine in Yunnan province contains lead and zinc, they mainly exist in galena and sphalerite. The size of sphalerite is fine, and the size of galena is finer, they are mainly composed of a large number of rich aggregate, but the dissociation degree of sphalerite is relatively better. Experimental studies were carried out, that take lime inhibit pyrite, cupric activate sphalerite, DF-341 for collector, though once-roughing twice-scavenging and fourth-cleanings after that of rough concentrate regrinding was recommend, the fineness of regrinding is -45 μm 92%, the Pb-Zn mixed concentrate was got and the sum of lead and zinc grade is 54.96%, yield is 3.16%. Based on the recommended process, a 700 t/d mill plant was built, adopting advanced and applicable equipment after optimizing the reasonable processing technology, and good benefits have been achieved.