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用双液浮选法研究了矿浆电位、捕收剂和抑制剂浓度对黄铁矿、黄铜矿和方铅矿可浮性的影响。用还原剂(Na2S和NaS2O4)和氧化剂(H2O2)调节矿浆电位。用氰化物和铬酸盐作为抑制剂,用戊基钾黄药作为巯基捕收剂。黄铁矿和黄铜矿具有无捕收剂可浮性。在应用还原剂Na2S时,3种硫化矿物均发生浮选。用或不用捕收剂时黄铜矿和黄铁矿均在相同的电位下发生浮选,而方铅矿在更高的还原电位下用捕收剂才能浮选。氰化物是通过调节电位的抑制剂,而铬酸盐是不通过调节电位的抑制剂。
The effect of pulp potential, collector and inhibitor concentrations on floatability of pyrite, chalcopyrite and galena was studied by two-liquid flotation method. Slurry potential was adjusted with reducing agents (Na2S and NaS2O4) and oxidant (H2O2). Cyanide and chromate are used as inhibitors and pentyl potassium xanthate is used as a mercapto collector. Pyrite and chalcopyrite have non-collector floatability. In the application of reducing agent Na2S, the three kinds of sulfide minerals are flotation. Both chalcopyrite and pyrite flotate at the same potential with or without collector, whereas galena flotation with collector at higher reduction potentials. Cyanide is an inhibitor of the regulation potential, while chromate is an inhibitor that does not pass through the regulation potential.