Apparatus for calcining raw material

Details Apparatus for calcining raw material Apparatus for calcining raw material

F - Mech Eng,Light,Heat,Weapons

27

B

39/18, 39/34

F27B 7/20 (2006.01)

Patent

CA 1062460

ABSTRACT OF THE DISCLOSURE An apparatus for calcining raw material such as the raw material used for making Portland cement. The apparatus is used in conjunction with a preheater and a calciner, such as a rotary kiln, and a cooler. The calciner includes a vessel with means for supplying combustion gas to the bottom of the vessel, an outlet at the top of the vessel, for spent combustion gas and calcined material, a burner for producing a combustion zone intermediate the combustion air supply and the calcined material outlet. Raw material can be supplied to the vessel either from above the combustion zone and below the outlet or from below the combustion zone. The combustion air may be supplied from the cooler or a combination of the cooler and the exhaust gases from the clinkerer. The apparatus is primarily designed for using coal as a fuel.

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