Investigation on alternative depressants for iron ore flotation

被引：77
|
作者：
Turrer, H. D. G. [2 ]
Peres, A. E. C. [1 ]
机构：
[1] Univ Fed Minas Gerais, Escola Engn, BR-31270901 Belo Horizonte, MG, Brazil
[2] Samarco Mineracao SA Ponta Ubu, BR-29230000 Anchieta, ES, Brazil
来源：
MINERALS ENGINEERING | 2010年 / 23卷 / 11-13期
关键词：
Iron ores; Flotation depressants; Flotation reagents; ADSORPTION; MECHANISM; HEMATITE; REAGENTS; STARCH;
D O I：
10.1016/j.mineng.2010.05.009
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Iron ore concentration through flotation represents an important application of reagents in mineral processing. Nowadays all Brazilian iron ore concentrators use starch as iron oxides depressant. This study evaluated the application of other depressants, which are commonly used in other flotation systems. Six carboxymethylcelluloses, three lignosulphonates, one guar gum, and four humic acids samples were investigated in the reverse cationic flotation. Laboratory flotation tests showed that only two polymers (one carboxymethylcellulose and guar gum) reached the same performance as starch. The superior performance of these reagents was due to the presence of the glucopyranose ring. The use of polymers blends led to promising results. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1066 / 1069
页数：4
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