无论硫酸铜存在与否,象羊毛铬蓝黑B、羊毛铬黑T、二苯胺磺钡,荧光黄酸、溴酚蓝、藏红T、结晶紫和亚甲蓝这样的染料都能浮选方铅矿和闪锌矿。由于硫酸铜的添加既可改善闪锌矿的浮选也可抑制方铅矿,其中一些染料或许能用来从多金属矿石中选择性分离这些硫化矿。硫化矿-乙基黄原酸钾体系没有表现这种优越性。在氧化条件下,黄铁矿可以用荧光黄酸浮选。 Regardless of the presence or absence of copper sulfate, dyes such as wool chrome blue black B, wool chrome black T, diphenylamine barium sulfate, fluorescent yellow acid, bromophenol blue, saffron T, crystal violet and methylene blue are capable of flotation Lead and sphalerite. Because copper sulphate addition can both improve flotation of sphalerite and inhibit galena, some of these dyes may be used to selectively separate these sulphide minerals from polymetallic ores. Sulfide ore - potassium ethylxanthate system did not show this superiority. Under oxidative conditions, pyrite can be flotated with fluorescein.