Planetary mill

The invention provides a planetary mill. The planetary mill comprises a feed inlet, a distribution plate, a planetary roller revolution driving arm, planetary rollers, a planetary roller sleeve, a planetary roller track bushing, a material to-be-milled step, a revolution driving mechanism, a machine body and the like. Ores which are crushed to be less than 20 millimeters in advance are subjected to step-by-step, repeated rolling and overflow discharge through six planetary rollers on an upper layer, a middle layer and a lower layer. Any fineness required by a process can be achieved only by controlling the feeding speed of materials and the revolution angular velocity of the planetary rollers. According to the process requirement, an external high-efficiency energy-saving powder concentrator can be configured to form closed-circuit grinding. 行星磨机，由进料口、分料盘、行星辊公转驱动臂、行星辊、行星辊套、行星辊轨道衬套、物料待磨台阶、公转驱动机构、机体等构成。把预先破碎到20毫米以下的矿石，经过上、中、下三层六个行星辊的逐级、多次、重复碾压、溢流排放。只要控制物料的进料速度和行星辊的公转角速度，就可以达到工艺要求的任意细度。可以根据工艺要求，配置外置高效节能选粉机，构成闭路磨