(中南大学 资源加工与生物工程学院，长沙 410083)
摘 要: 采用浮选试验、红外光谱和粒度分析研究Tween80对油酸钠浮选一水硬铝石的影响。结果表明：当Tween80与油酸钠以适宜的比例(质量比为1׃9)混合时，有利于一水硬铝石的浮选；随着Tween80的增多，混合表面活性剂不利于一水硬铝石的浮选。加入Tween80强化了细粒级一水硬铝石的捕收，但没有明显改善油酸钠在低温下的捕收能力；油酸钠主要以阴离子形式吸附于一水硬铝石表面，且加入Tween80可能与油酸钠在一水硬铝石表面产生共吸附。
关键字: 油酸钠；Tween80；一水硬铝石；浮选；混合表面活性剂
（School of Minerasl Processing and Bioengineering, Central South University, Changsha 410083, China）
Abstract:The effect of Tween80 on flotation of diaspore with sodium oleate was investigated by flotation test, IR spectroscopy and particle size analysis. The results indicate that the mixed surfactant of Tween80 and sodium oleate with mass ratio of 1׃9 is helpful for the flotation of diaspore, but further increasing Tween80 is not benefit for the flotation by mixed surfactant. The addition of Tween80 promotes the collection of fine particles. The collecting capacity of sodium oleate with Tween80 is not improved obviously at low temperature. The adsorption of sodium oleate on diaspore is mainly in the form of anions, and the co-adsorption between sodium oleate and Tween80 will take place on the surface of diaspore.
Key words: sodium oleate; Tween80; diaspore; flotation; mixed surfactant
