A simple method for establishing whether the adsorption of polysaccharides on talc is a reversible process

被引：19

作者：

Cawood, SR ^{[1
]}

Harris, PJ ^{[1
]}

Bradshaw, DJ ^{[1
]}

机构：

[1] Univ Cape Town, Mineral Proc Res Unit, ZA-7700 Rondebosch, South Africa

来源：

MINERALS ENGINEERING | 2005年 / 18卷 / 10期

关键词：

froth flotation; flotation depressants; precious metal ores;

D O I：

10.1016/j.mineng.2005.01.012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Polymeric depressants (modified guars and carboxy methyl celluloses) are used in the flotation of platinum-bearing ores in South Africa to reduce the recovery of naturally floatable gangue minerals such as talc. These polymers have always been considered to weakly adsorb (via physical adsorption forces) on gangue minerals and consequently the adsorption is considered to be an equilibrium process and therefore reversible. Micro-scale flotation tests on a talc sample showed that the floatability of the talc could be completely reduced by the adsorption of these polysaccharides but could be restored, depending on the conditions, by washing with water showing that the adsorption is reversible in a pure water system. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1060 / 1063

页数：4

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