Patent ID: 9709331
Date: 2017-07-18
CPC Classifications: C04B,F27B

Claim:
1. A plant for the production of cement clinker from cement raw meal, the plant comprising: a preheating zone for preheating the cement raw meal, a calcining zone for precalcining the preheated cement raw meal, the calcining zone in fluid communication with the preheating zone, a sintering combustion zone for completely burning the precalcined cement raw meal to cement clinker, the sintering combustion zone in fluid communication with the calcining zone, a cooling zone for cooling the hot cement clinker, the cooling, zone in fluid communication with the sintering combustion zone, and at least one additional combustion region for producing heat for the production of the cement clinker, the at least one additional combustion region has an intake opening for the admission of solid fuels, a discharge opening for the removal of the resulting combustion products, a firing region, at least one conveyor device for transporting the fuel and means for supplying oxygen-containing gas, the firing region being in such a form that the fuel introduced into the firing region forms a fuel bed and the means for supplying oxygen-containing gas having an inlet into the firing region and arranged above the fuel bed such that oxygen-containing gas flows over the fuel bed, the at least one additional combustion region is in the form of an underfeed furnace and the conveyor device is provided outside the firing region and is in such a form that it introduces the fuel into the firing region and thereby moves the fuel bed in the direction towards the discharge opening.