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辉钼矿一般作为伴生矿物赋存在铜矿石中。在用浮选方法选别这种矿石时,黄药和黑药作为捕收剂。浮选辉钼矿时,硫化铜和硫化铁同时浮起。铜-钼精矿的优先浮选,或是用药剂抑制辉钼矿,或是用药剂抑制铜矿物。在已知的一些方法中,抑制铜矿物而辉钼矿分离在泡沫产品中,比如,采用亚铁氰化物-氰化物工艺:通常用亚铁氰化钠和氰化钠抑制铜矿物,用非极性油捕收剂浮选辉钼矿;同样,用次氯酸钠和亚铁氰化钠能够抑制铜矿物,用非极性捕收剂和起泡剂浮选辉钼矿;有时也采用苛性钠和五硫化二磷作为铜矿物的抑制剂。但是用这些方法获得的指标不够稳定,而且还需要采用昂贵的药剂。
Molybdenites are generally found in copper ores as associated minerals. When flotation is used to select such ores, xanthate and black drug act as collectors. When flotation of molybdenite, copper sulfide and iron sulfide float at the same time. Preferential flotation of copper-molybdenum concentrates, either with agents to suppress molybdenite, or with agents to suppress copper minerals. In some known methods, copper minerals are inhibited while the molybdenite is separated in the foam product, for example with a ferrocyanide-cyanide process: copper minerals are usually inhibited with sodium ferrocyanide and sodium cyanide, Flotation of molybdenite with a non-polar oil collector; similarly, the use of sodium hypochlorite and sodium ferrocyanide to inhibit copper mineralization, flotation of molybdenite with non-polar collectors and foaming agents; and sometimes with Caustic soda and phosphorus pentasulfide as copper mineral inhibitor. However, the indicators obtained with these methods are not stable enough and expensive pharmaceuticals are required.