THE INFLUENCE OF COAL RANK AND MINERAL MATTER CONTENT ON CONTACT-ANGLE HYSTERESIS

被引：38

作者：

CRAWFORD, RJ

GUY, DW

MAINWARING, DE

机构：

[1] Centre for Applied Colloid and BioColloid Science, Department of Applied Chemistry, Swinburne University of Technology, Hawthorn, 3122

来源：

FUEL | 1994年 / 73卷 / 05期

关键词：

AGGLOMERATION; MINERAL MATTER; HYSTERESIS;

D O I：

10.1016/0016-2361(94)90018-3

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The degree of surface hydrophobicity of a range of coal types has been previously shown to be dependent on the carbon to oxygen ratio (or coal rank). The surface hydrophobicity of these coals increases during agglomeration due to substantial removal of the mineral matter content of the coals. It has been found that the degree of hysteresis between the advancing and receding contact angles for light gas oil in water against the coal surfaces decreases as the rank of the coal decreases. This is due to the lower rank coals possessing an organic component which is closer in surface free energy to that of the inorganic constituent of the coal compared to that of the higher rank coals.

引用

页码：742 / 746

页数：5

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