Grinding mill definition

Grinding mill means a device used to grind or disperse pigment throughout a paint.
Grinding mill means a machine used for the wet or dry fine crushing of any nonmetallic mineral. Grinding mills include, but are not limited to, the following types: hammer, roller, rod, pebble and ball, and fluid energy. The grinding mill includes the air conveying system, air separator or air classifier, where such systems are used.
Grinding mill means a cylindrical machine used to grind rock to a powder or liquid slurry in mines, industrial mineral processes and certain other applications by inducing movement and motion to the rocks contained within the mill body, which causes them to impact one another or to have impact with some form of grinding media (steel balls, steel rods, or ceramic balls) and, through repetition, causes the rocks to break apart and gradually wear down to small particles.