Flotation techniques for separation of diaspore from bauxite usingGemini collector and starch depressant

来源期刊：中国有色金属学报(英文版)2010年第3期

论文作者：夏柳荫 钟宏 刘广义

文章页码：495 - 501

Key words：diaspore; bauxite; reverse flotation; Gemini surfactant

Abstract: The floatability of diaspore and three kinds of silicate minerals, including kaolinite, illite and pyrophyllite, by a cationic Gemini surfactant as collector and starch as depressant was investigated as function of reagents concentration and pulp pH. Further studies of artificially mixed minerals and bauxite ore were also detailedly conducted. At last, the pre-desliming reverse flotation separation process was adopted. It can be concluded that the combinational use of a Gemini cationic collector and the starch depressant is effective. The concentrates with Al₂O₃ to SiO₂ mass ratio of 9.66 and the recovery of Al₂O₃ of 71.73% are obtained from natural bauxite ore (A/S=5.70) at pH value of around 10.

基金信息：the National Natural Science Foundation of China
the Foundation for the Author of National Excellent Doctoral Dissertation of China
the National Basic Research Program of China