【摘要】 采用红外光谱法对菱锌矿与Na2S,CA及氧锌灵浮选药剂的作用机理进行了研究.研究结果表明:Na2S活化菱锌矿的机理为S2-与菱锌矿矿粒中的CO23-发生置换反应,生成了疏水的ZnS薄膜层,促进了捕收剂的吸附;CA通过N-与菱锌矿矿粒表面上的Zn2+螯合而形成疏水的配合物;氧锌灵与菱锌矿表面的Zn2+发生化学吸附生成疏水的脂肪酸锌Zn(OOCR)2.同时进行了加温对比试验,结果表明:适当加温对菱锌矿的选别有利.更多还原

【Abstract】 In this paper,the flotation action of smithsonite and mechanism of flotation agents such as Na₂S,CA,YXL reagent are studied by infrared spectrometry.The results show that the mechanism of Na₂S’ activating smithsonite is surface replacement of S^2- and CO^2-₃ that in smithsonite particles and hydrophobic ZnS thin-film layer is formed.The absorption of collecting agent is promoted.The N-in CA reagents take part in chemical binding on smithsonite particle surface and the hydrophobic chelate is formed through the reaction of the N-in reagent with a zinc ion on mineral surface.YXL agent and smithsonite react and form hydrophobic Zn（OOCR）₂ while chemical absorption is taking place on the surface of smithsonite.Meanwhile the warming comparative experiments are carried out.The results show that it is beneficial to choose smithsonite when heating in proper range.更多还原