Process for the endothermic calcination of raw material

Details Process for the endothermic calcination of raw material Process for the endothermic calcination of raw material

1977-01-19

1978-08-08

Poer, J.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106103, C04B 702

Patent

active

041054601

ABSTRACT:
Endothermic calcination of raw material is effected at a temperature lower than that required for sintering or a chemical reaction, and whereby the calcination is performed in a rotary kiln in which the raw material is in the form of a slurry consisting initially of raw mix and water, the water being partially removed to form a sludge cake which is pelletized and fed downwards through a vertical calciner in the form of a bed consisting of packed pellets, and heat from an axially arranged burner is supplied in a downward stream through the calciner, and the flue gases of the rotary kiln are fed to the calciner to form an upwards directed countercurrent gas flow turbulently passing at a high velocity through the interstices between the packed pellets.

REFERENCES:
patent: 2769719 (1956-11-01), De Vaney
patent: 2792312 (1957-05-01), Geary et al.
patent: 2969227 (1961-01-01), Ludwig
patent: 3584850 (1971-06-01), Brandvold et al.

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