Numerical and experimental analysis of pulverized coal mill .
WEBOct 1, 2014 · Moreover, in previous studies, efficiency is defined as the ratio of coal mass flow rate to the burner to the total mass flow rate from the mill [5]. This ratio should be large for fine particles (less than 150 μm) and small for coarse particles (above 150 μm) [3] as coarse particles larger than 100 mesh (150 μm) are the primary cause of ...