(中南大學(xué) 資源加工與生物工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 采用浮選試驗(yàn)、紅外光譜和粒度分析研究Tween80對(duì)油酸鈉浮選一水硬鋁石的影響。結(jié)果表明：當(dāng)Tween80與油酸鈉以適宜的比例(質(zhì)量比為1׃9)混合時(shí)，有利于一水硬鋁石的浮選；隨著Tween80的增多，混合表面活性劑不利于一水硬鋁石的浮選。加入Tween80強(qiáng)化了細(xì)粒級(jí)一水硬鋁石的捕收，但沒(méi)有明顯改善油酸鈉在低溫下的捕收能力；油酸鈉主要以陰離子形式吸附于一水硬鋁石表面，且加入Tween80可能與油酸鈉在一水硬鋁石表面產(chǎn)生共吸附。
關(guān)鍵字: 油酸鈉；Tween80；一水硬鋁石；浮選；混合表面活性劑
（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
