Optimized conditions for selective gold flotation by ToF-SIMS and ToF-LIMS

被引：27
|
作者：
Chryssoulis, SL [1 ]
Dimov, SS [1 ]
机构：
[1] Amtel, London, ON N6G 4X8, Canada
来源：
APPLIED SURFACE SCIENCE | 2004年 / 231卷
关键词：
ToF-SIMS; ToF-LIMS; organic collectors; gold flotation;
D O I：
10.1016/j.apsusc.2004.03.058
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This work describes a comprehensive characterization of the factors controlling the floatability of free gold from flotation test using reagents (collectors) at plant concentration levels. A relationship between the collectors loadings on gold particles and their surface composition has been established. The findings of this study show that silver activates gold flotation and there is a strong correlation between the surface concentration of silver and the loading of certain collectors. The organic surface analysis was done by ToF-SIMS while the inorganic surface analysis was carried out by time-of-flight laser ionization mass spectrometry (ToF-LIMS). The developed testing protocol based on ToF-LIMS and ToF-SIMS complementary surface analysis allows for optimization of the flotation scheme and hence improved gold recovery. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：265 / 268
页数：4
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