湿潤微粉炭の引張強度および内部摩擦係数(<小特集>粉体小特集)

概要

論文の詳細を見る
The tensil strength and other parameters of wet fine coal with various water contents were determined by tensil breskup and direct shearing tests, in which the perlod of aging after increasing the water content was also varied. On the basis of the results obtained, the flowability of wet fine coal was evaluated. The tensil strength of wet fine coal in the pendular to funicular states increased with an increase of water content. However, in a mixture of funicular and capillary states the tensil strength either stayed almost constant or decreased after reaching a maximum value. The flowability of wet fine coal (wet powders) may be better evaluated by the tensil strength and shearing fore rather than the internal friction factor. This implies that the higher the tensil strength and shearing force increase, the more the flowability is flowability is reduced. Furthermore, the prolongation of the aging period improvers the flowability of wet fine coal, because the tensil strength is reduced by penetration of wear into the coal particles.
社団法人日本材料学会の論文
1985-11-15