Patent ID: 6626662
Filing Date: 2003-09-30
Classification: C04B,F27B,Y02P

Abstract:
A system for manufacturing cement clinker from cement raw meal with a cyclone suspension-type heat exchanger system as a preheater for the raw meal, with a precalcination stage supplied with fuel and tertiary air through a tertiary airline from a clinker cooler, with a sintering stage in the form of a rotary kiln and with the clinker cooler connected on a downstream side of the rotary kiln, and with a rotary drum-type reactor for carbonizing/burning secondary fuels, where the carbonization gases/combustion gases are introduced into the precalcination stage and solid residues of the reactor are utilized in a cement clinker production line, comprising:a partial stream line of the tertiary air guided from the clinker cooler to the calcinator, a highly ignitable fuel, the low ignitable or low flammable secondary fuel and a partial stream line for the cement raw meal leading into the rotary drum-type reactor on an inlet side for the solids, and a delivery side for the material on the rotary drum-type reactor being connected via a line for carrying out the solid residues to one of a tertiary air channel ascending from a bottom to a top, a rotary kiln exit gas channel of the calcination stage, an inlet chamber of the rotary kiln and an inlet chamber of the clinker cooler.