A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting , A high pressure grinding roll, often referred to as HPGRs or roller press, consists out of two rollers with the same , Tower mills, often called vertical mills, stirred mills or regrind mills, are a more efficient means of grinding.
A cement mill is the equipment used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement Most cement is currently ground in ball mills and also vertical roller mills , The bed of material drawn between the rollers emerges as a slab-like agglomeration of highly fractured particl.