White cement production

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

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Details

106100, C04B 708

Patent

active

045604126

ABSTRACT:
The invention relates to a method of producing white cement in which a reducing atmosphere is maintained over the entire length of a rotary kiln and precalcination takes place in a preheater supplied with heat exhaust gases from the kiln. Additional fuel is delivered to the preheater in such quantity that the CO contained in the kiln exhaust gases is burnt. As a result the essential reduction processes take place reliably in the rotary kiln without any problems occurring in the preheater as a result of a high CO content.

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