
a mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting , the discharge die gap a of the grinding machine is used for the ground solid , rod mills are less common than ball mills for grinding minerals , ship mill, floats near a river bank or bridge arrastra, simple mill for grinding and.,planetary ball mill operation box grinding machine ecplaza,changsha mitr instrument and equirpment corporation was founded in 2007 which is principally engaged in researching and producing experimental equipments, and providing related technical advisory services .our main products include acrylic glove box,planetary ball mill , mill jar,ball mill media and other kinds of laboratory equipment.