roller mill - in its simplest form, consists of two rolls of suitable material, mounted with their axes horizontal, running in opposite directions; used for crushing and mixing operations
Crusher made of a material which does not absorb moisture, is easy to clean, enables crushing to be effected quickly and evenly without overheating, limits contact with the outside air to the minimum, and meets the requirements mentioned in 2 (e.g. a detachable roller mill ).
