مطاحن الغروانية kekurangan. مطحنة الغروانية. mill Wikipedia. A mill is a machine that is used to reduce the particle size of a solid in suspension in a liquid, or to reduce the droplet size in emulsions. mills work on the rotorstator principle: a rotor turns at high speeds ( RPM).A high level of hydraulic shear [clarify] stress is applied on the fluid which results ...