Effect of ultrasonic preconditioning of pulp on the flotation of sulphide ores

被引：95

作者：

Aldrich, C ^{[1
]}

Feng, D ^{[1
]}

机构：

[1] Univ Stellenbosch, Dept Chem Engn, ZA-7602 Matieland, South Africa

来源：

MINERALS ENGINEERING | 1999年 / 12卷 / 06期

关键词：

sulphide ores; flotation froths;

D O I：

10.1016/S0892-6875(99)00053-9

中图分类号：

TQ [化学工业];

学科分类号：

0817 [化学工程与技术];

摘要：

The variables affecting flotation during ultrasonic preconditioning, i.e. pulp concentration, particle size and density, temperature, pressure, as well as ultrasound frequency and amplitude, were studied. An ultrasonic process for the batch flotation of sulphide ores from the Merensky reef in South Africa was designed to improve flotation performance, by selectively altering the surface properties of the target mineral particles. After ultrasonic excitation, the floatability of the sulphides improved significantly, and the silicates were also depressed to some extent. Compared to mechanical conditioning, ultrasonic radiation can improve the flotation rate, value grades and recoveries and reduce the dosages of flotation reagents appreciably. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：701 / 707

页数：7