Magnetic–hydrophobic coagulation of paramagnetic minerals: a correlation of theory with experiments

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• 作者：&Scaron ; kvarla ; Jií ; Zelená ; k ; Fridrich
• 关键词：magnetic&ndash ; hydrophobic coagulation ; paramagnetic minerals ; zeta potential
• 刊名：International Journal of Mineral Processing
• 出版年：2003
• 出版时间：January, 2003
• 年：2003
• 卷：68
• 期：1-4
• 页码：17-36
• 全文大小：332 K

文摘

A simple theoretical model of magnetic–hydrophobic coagulation considering the total interaction potential energy between two spheres exposed to an external magnetic field as a sum of the van der Waals, electrostatic, magnetic, and hydrophobic components is proposed. The model was used to interpret experiments on coagulation of fine siderite particles in distilled water and 10⁻² M KCl, hydrophobized by sodium oleate. In the experiments, a relative extent of the coagulation/stability equilibrium of the siderite suspension was evaluated photoelectrically. To estimate the model parameters, the ζ-potential and hydrophobicity of siderite particles were measured.