roller mill for grinding of asphalt Pyrophyllite Grinding Method Using Raymond Roller Mill Used in cables to prevent asphalt adhesion 0044mm98 Fe2O31~15 loss on ignition 80 moisture content 05 and 80~85 pyrophyllite The Pyrophyllite Raymond mill is the further development of the proven Raymond roller mill and is suitable for fine grinding to mediumhard ground material Application examples include pyrophyllite