某氧化铅锌矿石工艺矿物学研究

某氧化铅锌矿石中,锌矿物有闪锌矿、菱锌矿、红锌矿、异极矿,铅矿物有方铅矿、白铅矿、铅矾、铅铁矾、磷氯铅矿。目前条件下,矿石中可回收的矿物为闪锌矿、菱锌矿、方铅矿、白铅矿。闪锌矿、方铅矿粒度细小,嵌布复杂,应适度细磨。矿石中含有铅矾、铅铁矾、磷氯铅矿等易泥化矿物,磨矿后应首先考虑脱泥。脱泥后优先浮选回收闪锌矿、方铅矿,浮选尾矿中的菱锌矿、白铅矿可使用硫化钠等药剂使其表面硫化,然后通过浮选回收,或利用其与脉石矿物的密度差异采用重选回收菱锌矿、白铅矿。

Process Mineralogy Study of Lead-Zinc Oxidized Ore

In the lead-zinc oxidized ore,there are many kinds of zinc minerals,such as sphalerite,smithsonite,zincite,calamine,etc.,and many kinds of lead minerals,such as galena,cerusite,lead vitriol,plumbojarosite,pyromorphite,etc.In this ore,the grain size of sphalerite and galena is fine and ultrifine,and the dissemited circumstance is ratherish complex.Thus,suitable grinding operation may be considered.There are some minerals which are easy-to sliming occurred in this ore.After grinding operation,the de-sliming treatment should be considered.Upon completion of desliming treatment,selective flotation of sphalerite and galena may be carried out.The smithsonite and cerusite occurred in tailings can be recovered by flotation after sulphidizing treatment by using sulphidizing agents,such as Na2S.They also can be recovered by gravity separation methods.