000			01794nab a2200205 4500
005			20260520000836.0
008			260224s2009 xxu
245	0	0	_aStudy of the flowability of pulverized coals
260			_a _b _cnov./dic. 2009
270			_a08/06/2010 ; 08/06/2010
300			_a6 p. ; 5529-5535
520			_aTranscripción del resumen del autor. This paper presents the effects of particle size, moisture content, and coal type on the flowability of pulverized coals. A plexiglas hopper for visualizing the coal discharge and a Jenike-type shear apparatus for measuring friction characteristics were used to investigate the flowability. The fine coal displays weaker flowability because of its larger specific surface area and stronger agglomeration in comparison to the relatively large-size pulverized coal. The number of agglomerated particles C0 increases with the decrease in the particle size, which is also confirmed by the scanning electron microscopy (SEM) images. Increasing the moisture content tends to make the pulverized coal more cohesive. Cohesive forces acting among wet coal particles are mainly due to capillary forces associated with liquid bridging, which increases with the moisture content. However, the moisture content to some extent may act as a lubricant and improve flow along the wall surface. The coal type also has a significant effect on the flowability because of the differences in their compositions and physical structures. The measuring results show that the flowability of pulverized coal improves with the increasing coal rank.
581			_a6
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aLu, Haifeng _942271
100	1		_aGuo, Xiaolei _942272
100	1		_aGong, Xin _942273
999			_c170786 _d170786