Patent ID: 8616877

Claim:
Method for preheating of cement raw meal for production of cement clinker, comprising the step of conveying cement raw meal towards a feed end of a cement clinker kiln ( 1 ) through four separate heat exchanger-lines in counter flow to hot gases, each of said heat exchanger-lines comprising second cyclone/fluidized bed-heat exchangers ( 5 ) connected in series, wherein the hot gases are drawn off via two first heat exchangers ( 2 ) connected to the feed end of the cement clinker kiln ( 1 ), and via two of the heat exchanger-lines ( 3 , 4 ) following each of the two first heat exchangers ( 2 ) in a direction of flow of the hot gases, so that the four separate heat exchanger-lines ( 3 , 4 ) are arranged in parallel with each other, and wherein the two first heat exchangers ( 2 ) have a greater volume as compared to volumes of said second heat exchangers ( 5 ).