Cement kiln dust (CKD) methods for reduction and control

Cement kiln dust (CKD) is a waste product generated during the manufacture of Portland Cement. Volatile compound buildup in cement kilns results in the need to purge the system which stabilizes the process or brings the product quality within specifications. This paper outlines a stepwise approach for reducing CKD generation. The present cost penalties for generating CKD along with potential future liabilities of stored dust should make CKD reduction a main priority. Many cement plants have gone through similar investigations in the past, however most could benefit from re-examining their present dust wasting situation and applying new testing programs now available. This investigative process can be relatively simple and should be a high priority on any cement plant´s agenda. Following a stepwise, organized approach can often result in large reductions in dust wasting. Today´s technology allows the improved sampling and rapid chemical analysis needed for each plant to establish and follow a volatile management program resulting in the reduction of CKD generation