(武汉工业大学非金属矿设计研究所，武汉 430070)
摘 要: 用苯乙烯膦酸与脂肪醇组成的复合捕收剂浮选金红石矿取得了较好效果。为了解释复合捕收剂在金红石浮选中的协同作用，进行了Hallimond管浮选试验、捕收剂溶液表面张力的测量、金红石表面吸附量的测定以及X射线光电子能谱的测试，特别是角分辨X射线光电子能谱的测试，直接证明了复合捕收剂在固液界面和液气界面的相互作用及取向。试验结果表明，苯乙烯膦酸在金红石表面发生了化学吸附，脂肪醇与苯乙烯膦酸相互联结，其疏水基指向水相，从而增加了金红石表面的疏水性，提高了浮选回收率。
关键字: 复合捕收剂 金红石 苯乙烯膦酸 脂肪醇
（Non-metallic Mines Design and Research Institute,
Wuhan University of Technology, Wuhan 430070, P. R. China）
Abstract:From experimental study, a composite collector, composed of styryl phosphoric acid (SPA) and octanol had been found to be an efficent and selective flotation collector for rutile. To explain the synergistic effect of com posite collector on the flotation of rutile, microflotation, surface tension measurement, adsorption measurement, X-ray photoelectron spectroscopy (XPS) and an gle resolution X-ray photoelectron spectroscopy(ARXPS) had been made. Direct evidence had been obtained regarding interaction and orientation of composite collector at the solid-liquid and liquid-gas interfaces. It seems that while SPA chemically adsorbs on the rutile surface, octanol associates with SPA, pointing their long hydrocarbon chains towards bulk solution. In this way rutile surface hydrophobicity is enhanced and its flotation response is improved.
Key words: composite collector rutile styryl phosphoric acid octanol
