Oxidative weathering of a copper sulphide ore and its influence on pulp chemistry and flotation.

被引：27
|
作者：
Jacques, S. [1 ]
Greet, C. J. [2 ]
Bastin, D. [3 ]
机构：
[1] Magotteaux Andino SA, Panamer Norte Km 37 S-N, Santiago, Chile
[2] Magotteaux Australia Pty Ltd, Minerals Proc Res, POB 54, Mansfield Pk, SA 5012, Australia
[3] Univ Liege, Lab Minerals Engn & Recycling, Sart Tilman Campus B52, B-4000 Liege, Belgium
来源：
MINERALS ENGINEERING | 2016年 / 99卷
关键词：
Sulphide flotation; Ore oxidation; Grinding chemistry; SURFACE OXIDATION; COLLECTORLESS FLOTATION; CHALCOPYRITE CUFES2; GRINDING CONDITIONS; MINERAL SURFACES; METAL; PYRITE; CU; ACTIVATION; XANTHATE;
D O I：
10.1016/j.mineng.2016.09.023
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The influence of grinding chemistry on the flotation behaviour of sulphides minerals has been widely studied. However, its influence on partially oxidised sulphide ores is not well documented. Various oxidation events can affect a sulphide ore, either during in situ weathering of an ore body or during the different extraction and processing stages (mining operations, stockpiling, crushing, milling and flotation). In this study, a hypogene copper sulphide ore was artificially oxidised to various lengths of time by percolating a small quantity of acidic ferric sulphate solution inoculated with a mixed bacterial culture through packed columns. For each time interval a series of grinding-flotation tests using different grinding media alloys was completed. The grinding and flotation chemistry were compared and linked to the flotation behaviour of the ore samples. The results reveal that as oxidation progressed the copper metallurgy deteriorated. However, the deleterious effects of oxidation could be partially overcome through the application of the right grinding chemistry. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：52 / 59
页数：8
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