ボールミルによる石炭の油中粉砕に関する研究
1985 年 64 巻 12 号 p. 1027-1031
詳細
1985 年 64 巻 12 号 p. 1027-1031
The preparation of coal-oil slurry for the coal liquefaction plant has been studied using a ball mill (batch). The particle size distribution and the slurry viscosity, which vary with the grinding time, were measured for these three coals of Horonai, Taiheiyo and Wandoan.
Anthracene oil and creosote oil were used as the vehicle oil to be mixed with coals.
The following results were obtained.
1) The particle size distribution of the ground coal in the coal derived oil can be expressed by Rosin-Ra mmler's equation and the coefficient “n” in that equation does not vary with the grinding time.
2) The particle size varies with the grinding time to the power of 0.7∼0.84.
3) Slurry viscosity increases linearly with the decrease in the average particle size of coal. And the greatest increase in the slurry viscosity was observed in the case of Horonai coal. It appears that the swelling of coal causes the increase in the slurry viscosity.
