Difference Between Cement Mill And Coal Mill. Jun 09, 2010 Difference between ASR MSO3. Can anyone explain the difference between the Alkali Sulfate Ratio (ASR) Alkali Sulfate Molar Ratio (MSO3). What it shows if both are on lower side In our Raw meal we have K2O - 0.42 , Na2O - 0.11 and Cl - 0.01 . Our kiln is coal fired and the Sulfur in coal is between 0.8 - 1.2 .Traditionally, ball mills ...