Studies on Test for Plastic Properties of Coal by the Gieseler Plastomer

Effective Utilization Method for Surface Tension Based Coal Blending Technique -Effect of Coal Fluidity-

“…In this type of bonding, the boundaries of the original particles are clear and the adhering particles do not form a continuous coke matrix. 6,7) Previous studies have mainly focused on coal properties that related to the fusion phenomenon: dilatation, 8) fluidity, 9) viscosity, 10) rheometry [11][12][13] and permeation distance. 14) Regarding the adhesion phenomenon, Arima et al [15][16][17] proposed the concept of "specific dilatation volume" and argued that voids remain between the coal particles when the amount of coal expansion is insufficient relative to initial void ratio of the coal packed bed.…”

Effective Utilization Technique for Coal Having High Fluidity and Long Maximum Permeation Distance by Coal Size Adjustment

“…According to previous studies investigating the effects of particle size on caking properties, fluidity (MF) decreases with coal size refinement. 4,5) Since the maximum permeation distance is one index of caking that has a substantially positive correlation with MF, there is a possibility that the maximum permeation distance may be reduced by size refinement. Moreover, as shown in the discussion in our previous report, 3) since the expansion pressure decreases, it can be inferred that the maximum permeation distance also decreases, as the expansion pressure is considered to be the main influential factor of the permeation phenomenon.…”