(武漢工業(yè)大學(xué)非金屬礦設(shè)計(jì)研究所，武漢 430070)
摘 要: 用苯乙烯膦酸與脂肪醇組成的復(fù)合捕收劑浮選金紅石礦取得了較好效果。為了解釋復(fù)合捕收劑在金紅石浮選中的協(xié)同作用，進(jìn)行了Hallimond管浮選試驗(yàn)、捕收劑溶液表面張力的測(cè)量、金紅石表面吸附量的測(cè)定以及X射線光電子能譜的測(cè)試，特別是角分辨X射線光電子能譜的測(cè)試，直接證明了復(fù)合捕收劑在固液界面和液氣界面的相互作用及取向。試驗(yàn)結(jié)果表明，苯乙烯膦酸在金紅石表面發(fā)生了化學(xué)吸附，脂肪醇與苯乙烯膦酸相互聯(lián)結(jié)，其疏水基指向水相，從而增加了金紅石表面的疏水性，提高了浮選回收率。
關(guān)鍵字: 復(fù)合捕收劑 金紅石 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
