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The powder fineness made by Raymond roller mill usually can be adjusted between 50-450 mesh, and the maximum capacity of Raymond mill can up to 28 t/h. Our Friend Need a Raymond Roller Mill for Coal Powder Making . Local: Kemerovo, Russia. Product: YGM1720 Raymond Roller Mill. Process Materials: Coal. Powder Fineness: 325-400 mesh. Capacity: 25 t/h