METHOD AND APPARATUS FOR MAKING CEMENT CLINKER BY FIRING

摘要

In order to efficiently make a high quality cement clinker by firing with a small heat loss in a sintering method of a cement clinker which granulates and fires pre-heated cement raw material in a fluidized bed granulation/firing furnace and then introduces the clinker so granulated and fired into a cooler, by using only one fluidized bed granulation/firing furnace, the clinker is discharged from the fluidized bed granulation/firing furnace (14) through a gas dispersion plate (22) or through a clinker drop port (26) disposed on the extension of the gas dispersion plate (22) in a radial direction, the open area of this drop port (26) is adjusted by a gate (34) so that a difference pressure of the fluidized bed (18) becomes constant, air for classifying and cooling the clinker is blasted into a discharge shoot (28) connected to the drop port (26), the blast air quantity is regulated so that an air velocity blown out from the drop port (26) is different from an inflow air velocity through a nozzle of the gas dispersion plates (22), and the clinker is introduced into the cooler (16) through air-tight discharge means (30) positioned below a classification/cooling air blast position.