Recent advances in beneficiation for low rank coals

被引：189
作者：
Xia, Wencheng [1 ]
Xie, Guangyuan [1 ]
Peng, Yaoli [1 ]
机构：
[1] China Univ Min & Technol, Sch Chem Engn & Technol, Minist Educ, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China
来源：
POWDER TECHNOLOGY | 2015年 / 277卷
关键词：
Low rank coal; Beneficiation; Gravity; Flotation; Bio-beneficiation; FINES CLEANING WASTES; NONIONIC REAGENT ADSORPTION; SELECTIVE OIL AGGLOMERATION; FLUIDIZED-BED ADMFB; LOW-ASH COAL; DENSE MEDIUM; TURKISH LIGNITES; MICROBIAL DESULFURIZATION; REVERSE FLOTATION; FROTH FLOTATION;
D O I：
10.1016/j.powtec.2015.03.003
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Coal beneficiation is one of the most effective methods for removing minerals (such as gangues and pyrite) and pollutants (such as sulfur) before the burning of coal. In general, the beneficiation process of low rank coals is more difficult to achieve than that of bituminous and/or anthracite coals. However, about 50% of the world's total coal deposits are low rank coals. It is urgently required to develop effective beneficiation technologies for low rank coals. This review highlights recent advances in beneficiation technologies for low rank coals. Physical (gravity and magnetic separation), chemical (leaching), physico-chemical (flotation and oil agglomeration) and bio-beneficiation technologies are summarized in detail. Effective beneficiation technologies for low rank coals in the future are also suggested throughout this paper. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：206 / 221
页数：16
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