磷灰石
吸附
化学
机制(生物学)
化学工程
脂肪酸
矿物学
有机化学
认识论
工程类
哲学
作者
ShuYong Liu,Baisui Han,Zhao Tonglin
出处
期刊:Physicochemical Problems of Mineral Processing
[Politechnika Wroclawska Oficyna Wydawnicza]
日期:2021-07-18
被引量:2
摘要
The synergistic effect of surfactants, i.e., Tween-80 (polyethylene glycol sorbitan monooleate), Span-80 (sorbitanoleate), and MES (fatty acid methyl ester sulfonates), on fatty acid collectors were investigated using single mineral flotation experiments, surface tension measurement, Fourier transform infrared spectrum, and contact angle measurements.The single mineral flotation experiments showed that it was possible to efficiently separate apatite from magnetite, quartz, and biotite by mixing fatty acids with surfactants.The surface tension measurement showed that the surfactants could significantly reduce the surface tension and Critical Micelle Concentration (CMC) of fatty acids.Fourier transform infrared spectroscopy analysis indicated that all of the surfactants did not react with the fatty acids, but only physically adsorbed on the surface of apatite, thus promoting the chemical adsorption of fatty acids on apatite.However, the surfactant chemisorbed on magnetite and competing with a fatty acid, which led to a decrease in the flotation recovery.The results for contact angle measurement showed that the contact angle difference between apatite and magnetite increased with the addition of surfactant, and resulted in an efficient separation.
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