大型浮选机浮选流体动力学特性探讨及设计原则研究

在工艺条件合适的情况下,浮选技术经济指标的高低主要取决于浮选机的性能和操作。因此,要提高浮选技术经济指标,就必须保证一个良好的分选环境及流体动力学状态。本文从浮选过程动力学的角度出发,结合国内外许多学者的研究观点,根据浮选槽内不同粒级的矿物与气泡的碰撞、黏附、脱落过程及影响这些过程的原因,分析了浮选过程中能量消耗及分布情况,结合大型浮选机流体动力学的特性,分析矿物分选对大型充气机械搅拌式浮选机的具体要求,首次提出了在大型浮选机设计中要尽量扩大运输区的高度,在把矿粒带到槽内更高区域的同时,提高矿粒和气泡的上升高度,同时增加矿粒与气泡的碰撞机会,缩短矿化气泡到槽体表面的上升距离。

LARGE-SCALE FLOTATION CELL HYDRODYNAMIC CHARCCTERS EXPLORE AND THE DESIGN PRINCIPLES RESEARCH

With the suitable process conditions,flotation technical and economic indicators depends mainly on the performance and operation of flotation cell.So we must supply a good processing condition and hydrodynamics.This paper describe the flotation process and analysis the collision,adhesion,shedding process of the minerals and the bubbles and the impact of these processes causes;analysis the energy consumption and distribution;analysis the hydrodynamic character of large size flotation cell;analysis the requirement of mineral processing to large size flotation cell,extract the design principles of large size flotation cell.The first time in the large-scale flotation machine design to maximize the height of the transport area,improve mineral particles and air bubbles to a higher region,at the same time,increasing the opportunity of particle collisions with the bubble and reducing the distance of air bubbles to the surface.