CAM-TYPE GRINDER FOR PRODUCING FERTILIZER FROM HARD COMBUSTIBLE MINERALS Russian patent published in 1997 - IPC

FIELD: fertilizer production industry. SUBSTANCE: grinder has charging unit 3 and cylindrical body 1. Mounted inside body on shaft 5 are disks 7 forming together with body 1 a circular channel, and carrying cams fastened on them. Body 1 has discharge opening 4. Located on periphery of disks are teeth which are positioned at acute angle to axis of shaft 5. Primary material through charging unit 3 goes down inside cylindrical body 1 where it is ground by cams fastened on disks 7 during rotation of shaft 5. Ground material is brought out from grinding zone through discharge opening 4. EFFECT: high efficiency. 3 dwg