Particle Size Distribution Models for Metallurgical Coke Grinding Products

Six different particle size distribution (Gates–Gaudin–Schuhmann (GGS), Rosin–Rammler (RR), Lognormal, Normal, Gamma, and Swebrec) models were compared under metallurgical coke grinding conditions (ball time). Adjusted R2, Akaike information criterion (AIC), the root mean of square error (RMSE) employed as comparison criteria. Swebrec RR presented superior criteria with higher goodness-of-fit lower AIC RMSE, containing minimum variance values among data. The worst model fitting was GGS, poorest a wider results variation. undulation parameter ball time-dependent, considering greater b (b > 3) at longer times. ? does not exhibit defined tendency related to conditions, while k presents smaller Both depend on are hence an indication behaviour. Finally, oversize ultrafine particles found sizes 4.0 cm according time. 2.54 shows slight changes in median diameter over time, 3.0 requires more time reduce particles.