Mineralpowder ball pressing machine consists of main motor:the V belt, togear reducer, gear reducer through coupling, to drive shaft by apairof open gear again, ensure that the two roller synchronous (constantspeedreverse) which the passive roller by the hydraulic cylinderpiston to resist (byoblique iron to resist constant pressure type),the hydraulic circuit andhydraulic pressure control valve and theaccumulator guarantee system, materialstorage bin by quantitativeequipment machine evenly into the hopper, throughthe adjustment damperadjustment on the hopper, evenly into the middle of theroll ofmaterial, constant speed reverse operation of the unit to compress rollmaterial molding pressure changes from small to big, peaked in the rollcenterline of the molding pressure, material after the line, themolding pressuredecreases rapidly make the material into a ball state,take off the ball.