Equipment used to disperse pigments; usually comprising a steel cylinder lined with ceramic blocks, and containing ceramic or porcelain balls or pebbles as grinding media The cylinder rotates at a relatively slow speed, allowing the balls to cascade through the mill base, thus grinding or dispersing the pigment
A porcelain jar filled with flint pebbles and rotated with either a wet or dry batch of chemicals inside It is used to blend and to grind glaze and body ingredients
A horizontal rotating steel cylinder which grinds ore to fine particles The grinding is carried out by the pounding and rolling of a charge of steel balls carried within the cylinder