US 2016/0052822 A1

Process and device for ­cement clinker production

(22) 08.04.2014

(43) 25.02.2016

(57) In a process for the production of cement clinker, in which raw meal is preheated in a preheater (3) using the hot exhaust gases from a clinker kiln, and the preheated raw meal, which is optionally calcined in a calciner (4), is burned to clinker in the clinker kiln (2), wherein the preheater (3) comprises at least one string of a plurality of cyclone suspension-type heat exchangers (8, 9, 10), through which the kiln exhaust gas successively flows and in which the raw meal is preheated in stages, a partial stream of the kiln exhaust gas is diverted such that only a remaining residual stream of the kiln exhaust gas is utilized for preheating the raw meal.

(71) Holcim Technology Ltd., Rapperswil-Jona (CH)

(73) Holcim Technology Ltd., Rapperswil-Jona (CH)

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