Method of producing cement from raw material containing harmful

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

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106103, 432 13, 432106, C04B 702

Patent

active

045766444

ABSTRACT:
A method of producing cement from raw material containing a harmful substance such as sulphur, alkali and/or chlorine. In order to reduce the circulation of harmful substances a proportion of the gas or material stream is extracted from a zone in the cyclone preheater at which the desired reduction in the content of the harmful substance is achieved with minimum heat loss.

REFERENCES:
patent: 4286993 (1981-09-01), Lovichi et al.
patent: 4329180 (1982-05-01), Herchenbach et al.

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