Interaction Forces between Diaspore and Kaolinite in NaOL Solution Probed by EDLVO Theory and AFM Analysis

Molecular force plays an important role in the interaction between collector and minerals, which directly reflects intrinsic reason for selectivity collection of to minerals. In this work, forces sodium oleate (NaOL) minerals (kaolinite diaspore) were characterized by atomic microscopy (AFM) combined with EDLVO theory. The results show that after interacting NaOL, zeta potentials kaolinite diaspore more negative, hydrophobicity increased. calculation indicate electrostatic repulsion dominated mineral particles, van der Waals energy, hydrophobic energy increased NaOL treatment. AFM measurements attraction diaspore-diaspore kaolinite-kaolinite increase particles was larger than consistent results. adhesion surface kaolinite, confirming fact had better kaolinite. This work improves understanding mechanisms collector, diaspore,