EFFECT OF ADSORPTION CHARACTERISTICS OF DISPERSANT ON FLOW AND STORAGE PROPERTIES OF COAL-WATER MIXTURES

被引：12

作者：

KIKKAWA, H ^{[1
]}

TAKEZAKI, H ^{[1
]}

OTANI, Y ^{[1
]}

SHOJI, K ^{[1
]}

OGAWA, J ^{[1
]}

KANAMORI, S ^{[1
]}

机构：

[1] JAPAN COM CO LTD,ONAHAMA RES LAB,ONAHAMA,FUKUSHIMA,JAPAN

来源：

POWDER TECHNOLOGY | 1988年 / 55卷 / 04期

关键词：

ANIONIC DISPERSANTS ADSORPTION - APPARENT SURFACE AREA - COAL PROPERTIES EFFECTS - COAL-WATER MIXTURES - PULVERIZED COAL - STORAGE PROPERTIES;

D O I：

10.1016/0032-5910(88)80038-X

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The flow and storage properties of coal-water mixtures (CWM) have been studied with respect to adsorption of anionic dispersants. The amount of adsorbed dispersants increased slightly for several days after the formulation of the CWM and then reached equilibrium, but was further increased by agitation. The adsorption of the dispersants increased as the surface propertyof coals became more hydrophobic and increased with the apparent surface area for a given coal. The adsorption also increased with the molecular weight of dispersants. The apparent viscosities of CWM depended on the amount of adsorbed dispersant and the viscosity of the carrier liquid. The yield stress at a given viscosity became larger as the adsorption of the dispersant increased, while the viscosity index decreased. There was a good relationship between the rheological behavior and the flow property and static stability. The optimum yield stress and viscosity index were found to be 1-5 Pa. s and 0. 7-0. 8, respectively.

引用

页码：277 / 284

页数：8

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