Investigation on alternative depressants for iron ore flotation

被引：80

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

页码：1066 / 1069

页数：4

共 12 条

[1] Reagents in iron ores flotation [J].

Araujo, AC ;

Viana, PRM ;

Peres, AEC .

MINERALS ENGINEERING, 2005, 18 (02) :219-224

[2]

GARGULAK JD, 2002, SME ANN M PHOEN AR

[3] Colloidal properties of humic substances [J].

Jones, MN ;

Bryan, ND .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1998, 78 (01) :1-48

[4] Current understanding of the mechanism of polysaccharide adsorption at the mineral/aqueous solution interface [J].

Laskowski, J. S. ;

Liu, Q. ;

O'Connor, C. T. .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2007, 84 (1-4) :59-68

[5] Exploiting the dual functions of polymer depressants in fine particle flotation [J].

Liu, Qi ;

Wannas, David ;

Peng, Yongjun .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2006, 80 (2-4) :244-254

[6] Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz [J].

Pavlovic, S ;

Brandao, PRG .

MINERALS ENGINEERING, 2003, 16 (11) :1117-1122

[7] An overview of the use of chemical reagents in mineral processing [J].

Pearse, MJ .

MINERALS ENGINEERING, 2005, 18 (02) :139-149

[8]

PEREIRA SRN, 2006, P 23 IMPC, P644

[9] Interfacial and rheological properties of humic acid/hematite suspensions [J].

Ramos-Tejada, MM ;

Ontiveros, A ;

Viota, JL ;

Durán, JDG .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2003, 268 (01) :85-95

[10] Surface chemical studies on pyrite in the presence of polysaccharide-based flotation depressants [J].

Rath, RK ;

Subramanian, S ;

Pradeep, T .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2000, 229 (01) :82-91

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