System for manufacturing cement clinker

A system for manufacturing cement clinker from cement raw meal comprising:

• a cyclone suspension-type heat exchanger system as a preheater for the raw meal,
• a sintering stage in the form of a rotary kiln and with a clinker cooler connected on a downstream side of the rotary kiln,
• a precalcination stage supplied with fuel and with tertiary air through a tertiary air line from the clinker cooler,
• a rotary drum-type reactor for carbonizing/burning secondary fuels having an inlet side and a delivery side, where carbonization gases/combustion gases from the carbonizing/burning of the secondary fuels are introduced into the precalcination stage and solid residues from the reactor are utilized in the system,
• a partial stream line of the tertiary air guided from the clinker cooler to the precalcination stage connected to the inlet side of the reactor,
• a highly ignitable fuel supplied on the inlet side of the reactor,
• the secondary fuel supplied on the inlet side of the reactor, and
• a partial stream line for the cement raw meal leading into the inlet side of the reactor, and
• the delivery side of the reactor connected via a line for carrying out the solid residues to at least one of a group consisting of a tertiary air channel ascending from a bottom to a top, a rotary kiln exit gas channel of the precalcination stage, an inlet chamber of the rotary kiln and an inlet chamber of the clinker cooler.