METHOD OF PRODUCING CLINKER WITH CONTROLLED CO EMISSION Russian patent published in 2012 - IPC C04B7/43 

FIELD: chemistry.

SUBSTANCE: method of producing clinker from a crude mixture involves heating the crude mixture with flue gases, precalcination of the crude mixture, calcination of the crude mixture precalcinated in a rotary kiln in which flue gases containing CO₂ are formed during precalcination and calcination in the rotary kiln. Flue gases formed during precalcination undergo treatment to remove CO₂ without mixing said gases with flue gases formed during calcination in the rotary kiln. Precalcination gases are fed for contact heating of the crude mixture and flue gases formed during calcination in the rotary kiln are either removed from the process into a heat regenerating assembly without touching the heated crude mixture or precalcination products, or at least their portion is used for indirect heating of the treated mixture.

EFFECT: reducing CO₂ emission while reducing expenses for removal thereof.

17 cl