PDF Dry grinding studies of coal in a rod mill Springer
coal. Inthisflowsheet, the runofminecoalof 75mm size is fed to an impactor to reduce the size to below 20 mm. Ina roll crusher, the size is further reduced to less than 6 mm, which is fed to the wet grinding rod millto obtainthe particlesize distribution required for slurrytransportation. In the present investigation, the runofminecoal is