细粒浮选体系中界面极性相互作用理论及应用

来源期刊：中南大学学报(自然科学版)1993年第6期

论文作者：胡岳华 邱冠周 王淀佐

文章页码：749 - 754

关键词：细粒浮选; 颗粒; 界面极性相互作用

Key words：fine particle flotation; particle; interfacial polar interactions

摘    要：本文系统讨论了界面极性相互作用理论及其在细粒浮选研究中的应用。亲水矿粒间水化排斥作用及疏水矿粒间疏水吸引作用主要归因于颗粒间界面极性相互作用。通过测定矿物在已知表面能参数的液 体中的接触角,就可确定矿物的表面能参数值。由界面极性相互作用能确定水化或疏水相互作用能量常数,从而计算颗粒间水化或疏水相互作用能曲线,利用 EDLVO理论能很好解释矿粒间的凝聚、分散行为。

Abstract: Interracial polar interactions in flotation of fine particles have been discussed in this pa-per. The hydration repulsion between hydrophilic mineral particles and hydrophobic attraction between hydrophobic particles are of polar interaction origin. The surface tension parameters of one mineral can be determined by means of contact angle measurements with three liquids of different polarities provided one knows the surface tension parameter for all the three liquids. The interaction energy constants which can be used to calculate the hydrationrepulsive or hydrophobic attraction energies can be determined according to interracial polarinteraction energy. The behaviors of selective aggregation or dispersion between mineral particles can be explained based on EDLVO theory.