流态化浮选技术概述

首先分析总结了粗颗粒矿物难浮的原因为粗颗粒矿物与气泡接触时间短,感应时间长,与气泡气固黏附强度低;其次介绍了流态化技术的发展以及该技术在粗颗粒分选中的应用,气固、液固两相流态化在煤分选领域普遍应用,由于有色金属矿分选领域的复杂性,气液固三相流态化浮选技术处于研究阶段;同时总结了流态化浮选技术原理和设备的研究进展,HydroFloat Separator和NovaCell是具有代表性的设备;分析了流态化浮选的主要研究方向和发展趋势为三相流态化浮选动力学过程研究,三相流场模拟策略研究,以及复合力场的加入提升矿物粒度浮选上限。

An Overview of Fluidized Flotation Technology

This paper firstly summarizes and analyzes the reasons for poor recovery of coarse-grained minerals: 1) the contact time between coarse-grained minerals and bubbles is short, but the induction time is long; 2) the gas-solid adhesion strength with bubbles is low. Next, we mainly introduce the fluidization technology and its application of this technology in coarse particle sorting. Though gas-solid, liquid-solid two-phase fluidization are widely used in the field of coal sorting, but due to the complexity of the field of non-ferrous metal ore sorting, gas-liquid-solid three-phase fluidized flotation technology is still in the research stage. At the same time, the research progress of the theory and equipment of fluidized flotation technology is summarized. HydroFloat Separator and NovaCell are representative equipments. The main research directions and development trends of fluidized flotation are analyzed. The study of fluidized flotation kinetics, three-phase flow field simulation strategy, and the addition of composite force fields increase the upper limit of mineral particle flotation.