Cement Kiln Preheater Air Flow Velocities

new installations include a precalciner with tertiary air duct, so that the preheater and precalciner have become one unit.However, the preheater has a specific task and is not principally connected to the.The heat exchanger is a gas duct with velocities from 10 to 20 m/s,.Co-processing sewage sludge in cement kiln in china - clinker.