Patent ID: 8021479

Claim:
A plant for the production of cement clinker from cement raw material, having a. a preheater for preheating the cement raw material, b. a calcining apparatus for precalcining the preheated cement raw material, c. a sintering kiln for completely burning the precalcined cement raw material to cement clinker and d. a cooler for cooling clown the hot cement clinker, e. wherein between the cooler and the calcining apparatus there is provided a tertiary air duct, via which tertiary air is supplied to the calcining apparatus, and f. a dust combustion reactor for heat-treating separated dusts, having means for supplying the dust, means for supplying combustion air and means for supplying fuel, wherein the cooler is connected in such a way to the means for supplying combustion air that at least a part of the tertiary air is supplied to the dust combustion reactor as combustion air and the means for supplying the dust and the means for supplying combustion air are arranged so that the dusts to be treated and the combustion air pass through the dust combustion reactor in co-current flow and the calcining apparatus is connected to the sintering kiln via a meal chute and the dust reactor has an outlet that is connected to the meal chute, so that the dust preheated in the dust reactor reaches the sintering kiln together with the precalcined cement raw material via the meal chute.