Cement Kiln Feed Control

Cement is pyroprocessed in long, cylindrical kilns that rotate axially at a rate 30 to 250 revolutions per hour. The axis of the kiln is slightly sloped, typically 1-4º, enabling the raw mix or meal that’s fed into the upper end of the tube to be properly processed at the prescribed rate. A burner pipe located at the opposite end of the kiln produces  charge temperatures of approximately 1450º C.