ROLL-TYPE PRESS FOR GRINDING MINERAL RAW MATERIAL Russian patent published in 2003 - IPC

FIELD: disintegration of ores and other raw material. SUBSTANCE: proposed roll-type press includes bearing frame which holds at spaced relation in movable and fixed supports cylindrical rolls, loading metering bin mounted above clearance and drive for rolls. Roll on fixed support is coated with wear-resistant material and roll on movable support is made in form of hollow cylinder manufactured from flexible material and provided with central hole; it is provided with coat made from ring-shaped segments mounted for vertical motion in way perpendicular to axis of shaft; they are interconnected together and are connected with end face of bearing flange by means of rigid fastener. Movable and fixed supports of rolls are interconnected by means of rigid coupling; cavity of roll is connected to pressure control system through central hole and revolving joint. EFFECT: enhanced efficiency of grinding; possibility of keeping crystalline minerals intact. 2 dwg