The role of copper ions in sphalerite-pyrite flotation selectivity

被引：30

作者：

Dichmann, TK ^{[1
]}

Finch, JA ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Met Engn, Montreal, PQ H3A 2B2, Canada

来源：

MINERALS ENGINEERING | 2001年 / 14卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

sulphide ores; froth flotation; flotation activators;

D O I：

10.1016/S0892-6875(00)00177-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Microflotation, laboratory batch, and in-plant minicell continuous tests were conducted to determine if copper ions not only activate sphalerite but also depress pyrite when the minerals are together. Microflotation tests showed that pyrite recovery increased with addition of copper ions in the pH range of 5-10 when alone, but decreased when sphalerite was also present. Batch flotation rests (Red Dog ore) showed that upon addition of copper, pyrite recovery decreased significantly. The continuous tests (Louvicourt Mine) confirmed this and indicated that with excess copper pyrite recovery can increase. The results suggest there is competition for copper and xanthate in favour of sphalerite. To take advantage of this competition it may be necessary to control the sequence and rate of copper, collector, and lime addition. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：217 / 225

页数：9

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