How much Draft( i.e,.in mmWC ) should be maintaine at Mill inlet and Outlet to get optimum production for 5m x 15m ball mill with two chambers.
Raj Sahu
Pressure drop across mill should be 80-120mmwg.Mill inlet pressure should be slightly negative 10-20mmwg.
AN - Kuwait
Roughly the outlet draught is 30 times ID in mm .And you can calculate by taking the empty volume of mill,residence time of material ,area of mill cross section etc.