METHOD OF ARRESTING CEMENT DUST Russian patent published in 1998 - IPC

FIELD: production of cement; arresting cement dust from air flow escaping from rotary furnace or mill. SUBSTANCE: air mixture containing particles of cement flows to reservoir containing water-cement suspension through open damper in exhaust pipe line and then through intake branch pipe; while flowing through this suspension, cement particles (dust-laden air) get wetted adhering to cement particles of suspension, thus remaining in suspension; cleaned air escapes to atmosphere through discharge branch pipe. Mass relationship of suspension is as follows: water, 80 to 90 percent and cement. 10 to 20 percent. EFFECT: complete arresting of cement dust with no discharge into atmosphere. 1 dwg