A review on the advanced design techniques and methods of .
WEBApr 1, 2019 · A conventional largescale coal preparation process in China is shown in Fig. 1 [4]. After the raw coals are treated by the separator, vibrating screen, crusher, centrifuge, the particle size decreases from more than 100 mm to the final 2–25 mm, and meanwhile, the ash content decreases from % of the raw coal to % of the final .