Method of increasing the clinker output of an existing cement plant

摘要

In a method of increasing the clinker output of an existing cement plant, a raw mix feedstock is preheated in a first preheater (70) with kiln exhaust gases. The preheated raw mix feedstock is calcined, then burned in a rotary kiln (16) to form clinker. The clinker is cooled in a clinker cooler (20). The calcined raw meal - consisting essentially of lime and combustion residues like ash, carbon and desulfurization residues - is fed in a second preheater (50), in which process air from the clinker cooler (20) is directed in countercurrent flow to the direction of flow of the calcined raw meal. The calcined preheated raw meal is forwarded to the rotary kiln.