1.前言在从矿石中提取金属时,从矿山采掘出来的矿石,一般是不可能直接冶炼的。因为采掘出来的矿石,例如铜(黄铜矿CuFeS_2)、铅(方铅矿PbS)、锌(闪锌矿ZnS)、铁(黄铁矿FeS_2)及其它有用矿物通常是与以二氧化硅为主的脉石矿物混在一起产出的。在进入冶炼过程前,首先必须从共存的大量脉石中把有用矿物富集起来。并且还有必要将这些有用矿物进一步选 1. Introduction In the extraction of metals from the ore, the ore extracted from mines is generally impossible to smelt directly. Because the minerals that are excavated, such as copper (chalcopyrite CuFeS 2), lead (galena PbS), zinc (sphalerite ZnS), iron (pyrite FeS 2), and other useful minerals are often mixed with silica The main gangue minerals mixed together. Prior to entering the smelting process, it is first necessary to enrich the useful minerals from the coexisting mass of gangue. And there is still a need for further use of these useful minerals