air through a line 22 from the clinker cooler 14 by means of a blower 23 to the suspension gas flow dryer the exhaust gases of this dryer are conveyed by means of an exhaust gas blower 24 and are purified in a dust removal installation such as a precipitator 4 a particularly advantageous variation of the method is shown in the installation of fig2 in that fig exhaust gases are shown leaving a three step cyclone preheater 26 through a line 25 and are supplied without an intermediate blower to a dryer consisting of an uptake or riser 27 a separator or sifter 28 a comminution device 29 and a separation device 30 the fine grained but agglomerated raw material is introduced by means of a line 31 together with if desired already dried raw comminuted material and or filter dust through a line 32 these materials are introduced into a feed line 33 the separation device by means of a line 34 introduces comminuted raw material directly without intermediate storage into the highest stage of a cyclone preheater 26 the preheater may be equipped with an additional heat source 35 a calcining kiln 37 is provided with a burner 38 to accomplish sintering and an exhaust vent 36 is provided for partial removal of the hot exhaust gases the calcining kiln 37 feeds a clinker cooler 39 from which the cooled clinker is discharged through a line 40 a blower 41 feeds exhaust gases from the calcining kiln 37 through the cyclone preheater and the dryer and additional heated air may be provided.