摘要
本文讨论搅拌在疏水絮凝中的重要作用。作者通过试验发现,石英或菱锰矿微细矿粒的最大絮凝度仅在搅拌转速为800—1000rpm处出现,且与矿粒的原始粒度无关。文中提出的絮凝动力学总模型考虑了絮团形成及絮团破裂两个分过程。模型揭示了疏水絮凝及凝聚的重要的动力学差异。同时考察了非极性油对疏水絮凝的强化作用。
The important role of agitation in hydrophobic flocculation wsa discussed. It wsa found that maximum flocculation degree of fine quartz or rhodcchrositse particles is reached only at higher agitation speed e. g. 800-1000 r. p. m. regardless of the primal particle size. A general kinetic model considering both fioc formation and fioc breakup subprocesses was proposed, the model revealed the considerable kinetic distinction between hydrophobic flocculation and coagulation of fine mineral particles. The way of flocculation intensification by nonpolar cii addition was also examined.
关键词
徵细矿粒
疏水絮凝
动力学
Hydrophobic flocculation
Kinetics
fine particles
