Specific surface free energy component distributions and flotabilities of mineral microparticles in flotation—An inverse gas chromatography study

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• 作者：Martin Rudolph^a ; ^{m.rudolph@hzdr.de} ; ^{mrudolph83@gmail.com} ; Robert Hartmann^b
• 关键词：Flotation ; Inverse gas chromatography ; Hyrophobicity ; Wettability ; Surface free energy ; Heterocoagulation
• 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
• 出版年：2017
• 出版时间：5 January 2017
• 年：2017
• 卷：513
• 期：Complete
• 页码：380-388
• 全文大小：3134 K
• 卷排序：513

文摘

Mineral microparticle surfaces exhibit heterogeneous surface free energies. Wettability heterogeneities are well characterized by inverse Gas Chromatography. Surfactants have most effect on and reduce the high energy sites of surfaces. Surface area fraction relevant to render a surface flotable is less than 1%. Energy-of-interaction vs. flotability correlate stronger at small fractional area.