The relationship between the peak in air recovery and flotation bank performance

被引：73

作者：

Hadler, K. ^{[1
]}

Cilliers, J. J. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Royal Sch Mines, Dept Earth Sci & Engn, Froth & Foam Res Grp, London SW7 2AZ, England

来源：

MINERALS ENGINEERING | 2009年 / 22卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

Froth flotation; Flotation bubbles; Flotation froths; Air recovery; Air profiling; FROTH STABILITY COLUMN; IMAGE-ANALYSIS; MODEL; FOAM;

D O I：

10.1016/j.mineng.2008.12.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Air recovery, or the fraction of air entering a cell that overflows the cell lip as unburst bubbles, is an important measure of froth stability as it affects the flow of bubble surface to the concentrate. An experimental campaign was carried out over the first four cells of the rougher bank at a South African platinum mine in order to find the relationship between froth stability and flotation performance as a function of air flowrate. The results showed that a peak in air recovery was observed as the air rate increased. Furthermore, this corresponded to the air flowrate at which the highest overall recovery was obtained. This can be explained by understanding the resulting changes in the structural features of the froth such as bubble loading and the flow of bubble surface and suggests that improved flotation performance can be achieved by operating a bank under conditions that result in a maximum in froth stability. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：451 / 455

页数：5

共 22 条

[1] Stability of solids-coated liquid layers between bubbles [J].