Effects of Coal Characteristics on the Properties of Coal Water Slurry

Authors: Yuchi, Wei¹; Li, Baoqing¹; Li, Wen¹; Chen, Haokan¹

Source: Coal Preparation, Volume 25, Number 4, Number 4/October-December 2005 , pp. 239-249(11)

Publisher: Taylor and Francis Ltd

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Abstract:

The effects of coal characteristics on the properties of coal water slurry (CWS) were systemically studied using sixteen Chinese coals of different ranks from lignite to anthracite. The correlation between coal properties and CWS characteristics were investigated by multivariate progressive regression analysis. CWS properties examined in this study included slurryability (concentration of slurry that gives an apparent viscosity at 1200 mPa · s at a shear rate of 28.38 s −1 ), rheological behavior (represented by a flow index), and static stability (days for formation of soft sediment). Coal properties examined in the study included coal rank, air equilibrium moisture (M ad ), maximum moisture holding capacity (MHC), ash content, surface properties, petrographic macerals, pore structure, and adsorption characteristics of dispersants.

Keywords: Coal properties; Coal water slurry; Slurry rheology; Static stability

Document Type: Research article

DOI: 10.1080/07349340500444489

Affiliations: 1: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences, Taiyuan, China

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