EP3931165 (A1)

Method and device for the production of cement clinker

(22) 25.03.2021

(43) 05.01.2022

(57) Summary of the corresponding patent WO2021204549 (A1): The invention relates to a method for producing cement clinker, said method comprising the steps of: – preheating raw meal in a preheater (12), – calcining the preheated raw meal in a calciner (14), – burning the preheated, calcined raw meal in a kiln (16) to obtain cement clinker, – cooling the cement clinker in a cooler (18), – withdrawing, as a bypass gas, some of the exhaust gases flowing out of the kiln (16), – cooling the bypass gas in a mixing chamber (60) using a cooling gas, and – separating dust contained in the bypass gas, wherein at least some or all of the cooling gas is formed from the bypass gas and/or the exhaust gas from the calciner, and wherein the cooling gas is introduced into the mixing chamber (60) at a ratio of 2-10 to 1 in relation to the bypass gas.

(71) thyssenkrupp Industrial Solutions AG (DE)

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