纳米气泡在微细粒矿物浮选中的应用研究现状

我国矿石资源禀赋差,很大一部分微细粒矿物资源难以回收.提高微细粒矿物资源的综合利用率是解决我国现阶段面临的矿产资源匮乏问题最有效的途径之一.文中主要对微细粒矿物的分选现状、纳米气泡的发展历程、形成方法、稳定性研究现状及在矿物浮选中的应用现状进行讨论与分析.纳米气泡浮选是针对微细粒矿物粒度小、质量轻、比表面积大、表面能高...

Application Research Status of Nano-Bubbles in Micro-Fine Mineral Flotation

Due to low grade resource endowment in China,a large part of the fine-grained mineral resources is difficult to recover.Improving comprehensive utilization rate of fine-grained mineral resources is one of the most effective ways to solve the shortage of mineral resources in the country at this stage.This article mainly discusses and analyzes status quo of separation of fine-grained minerals,development history of nanobubbles,formation methods,stability research status and status quo of application in mineral flotation.Nanobubble flotation is a new type of flotation process that is aimed at the characteristics of small particle size,light weight,large specific surface area and high surface energy of fine minerals.It has three main characteristics.Firstly,reducing the size of bubbles can increase the collision and adhesion between bubbles and fine minerals.Secondly,the bridging between nano bubbles can make selective flocculation between fine minerals,and increase apparent particle size of minerals.Thirdly,a new type of chelating collector can modify the surface of nanobubbles to improve chemical selectivity of nanobubbles to useful mineral surface active particles.Nanobubble flotation would surely become one of the successful measures to improve comprehensive recycling of fine-grained mineral resources.