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A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering. It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell. . High quality ball mills are potentially expensive and can grind mixture.
A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting .. A typical type of fine grinder is the ball mill. . in laboratories where they are used for grinding sample material for quality assurance. .. or bridge; Arrastra, simple mill for grinding and pulverizing (typically) gold or silver ore.