本发明的详细就明对日本大量产出的含铜、铅、锌、硫化铁等有价矿物的复杂硫化矿,一般不易进行优先浮选分离,尤其是这种矿床如由于氧化等原因而变质了的时候,这几种矿物的浮游特性则十分近似,从而使它们的分离变得十分困难,用原 Detailed Description of the Invention It is generally not easy to carry out preferential flotation separation of complex sulfide ores containing large amounts of copper, lead, zinc, iron sulfide and other valuable minerals which are massively produced in Japan. In particular, such deposits are deteriorated due to oxidation or the like When the mineralization of these types of minerals are very similar to the characteristics of the so that their separation becomes very difficult to use the original