The effect of environment, oxidation and dissolved metal species on the chemistry of coal flotation

被引：42

作者：

Somasundaran, P

Zhang, L

Fuerstenau, DW

机构：

[1] Univ Calif Berkeley, Dept Mat Sci & Mineral Engn, Berkeley, CA 94720 USA

[2] Columbia Univ, Henry Krumb Sch Mines, NSF IUCS Ctr Surfactants, New York, NY 10027 USA

来源：

INTERNATIONAL JOURNAL OF MINERAL PROCESSING | 2000年 / 58卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

coal oxidation; coal hydrophobicity; coal flotation; coal weathering; surface functional groups;

D O I：

10.1016/S0301-7516(99)00022-8

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The wettability and hence the floatability of coal are influenced markedly by its oxidation as well as the presence of dissolved inorganics in the system. Oxidation results in the formation of oxygenated surface sites that reduce hydrophobicity. Hydrolyzable metal species, whether released from coal itself during processing or added in the process, can drastically affect the flotation process. These phenomena are reviewed and the mechanisms involved are discussed in this paper. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：85 / 97

页数：13

共 14 条

[1]

[Anonymous], 1994, NEW TRENDS COAL PREP

[2]

Berkowitz N., 1989, SAMPLE SELECTION AGI, P217

[3] THE EFFECT OF MULTIVALENT IONS ON THE FLOTATION OF COAL [J].