DEVELOPMENT OF A MATHEMATICAL MODEL FOR
2011-1-18 · of coal is fed to the hammer mill, the mill discharge size distribution should correspond to the breakage distribution function, b*, of this size fraction. For this purpose, test samples of crushed PCC and imported coal were screened to obtain +10, 6/10, 3/6 and 1/3 mm size fractions. About 400 g of each size fraction was slowly fed to the mill