Method and apparatus for manufacturing cement clinker

Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing

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106103, 432106, C04B 702

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active

043425984

ABSTRACT:
Method of manufacturing cement clinker comprises preheating finely divided cement raw material, injecting this raw material by an air flow through the charge end of a rotary kiln, and decarbonizing suspension of the said raw material by a counterflow of the combustion gases resulting from burning fuel at the discharge end of the kiln. Thereafter, the decarbonized material is withdrawn by the peripheral portion of the combustion gas flow through said charge end of the kiln, separated from the gaseous combustion products, and delivered back into said kiln for being burned in a stirred bed into cement clinker.
Apparatus for realizing this method comprises a rotary kiln having a charge and a discharge ends, an ejectro coaxially introduced into said rotary kiln through the charge end thereof, a cyclone heat exchanger communicated with said ejector, a separator communicated with the charge end of said kiln, adapted for separating the decarbonized material from the combustion gases and having an inclined chute introduced into the charge end of said rotary kiln.

REFERENCES:
patent: 4187071 (1980-02-01), Brachthauser et al.

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