Nanobubble generation and its applications in froth flotation(part Ⅱ):fundamental study and theoretical analysis  

作　　者：TAO Daniel HONAKER Rick 

机构地区：[1]Department of Mining Engineering,University of Kentucky

出　　处：《Mining Science and Technology》2010年第2期159-177,共19页矿业科学技术（英文版）

基　　金：The Center for Advanced Separation Technologies (CAST) and the National Natural Science Foundation of China (Nos.50921002 and 90510002) for the financial support

摘　　要：Froth flotation is a commonly employed technology to improve the quality of raw coal and minerals.Coal and minerals particle size and surface hydrophobicity are two main parameters that affect three key steps in froth flotation process:particle-bubble collision,adhesion,and detachment.This paper fundamentally investigated the effects of nanobubble on coal and phosphate flotation.It has been found that the presence of nanobubble in flotation pulp could widen the coal and phosphate flotation particle size range,increase the particle surface hydrophobicity,and thus improve the coal and phosphate froth flotation recovery.Froth flotation is a commonly employed technology to improve the quality of raw coal and minerals.Coal and minerals particle size and surface hydrophobicity are two main parameters that affect three key steps in froth flotation process:particle-bubble collision,adhesion,and detachment.This paper fundamentally investigated the effects of nanobubble on coal and phosphate flotation.It has been found that the presence of nanobubble in flotation pulp could widen the coal and phosphate flotation particle size range,increase the particle surface hydrophobicity,and thus improve the coal and phosphate froth flotation recovery.

关 键 词：COAL PHOSPHATE froth flotation CAVITATION NANOBUBBLE Zeta potential 

分 类 号：TD923.7[矿业工程—选矿]