Thermal treatment of granular or lumpy material, particularly fi

Details Thermal treatment of granular or lumpy material, particularly fi Thermal treatment of granular or lumpy material, particularly fi

1974-12-23

1976-05-11

Camby, John J.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

432 19, 432 96, F27B 1518

Patent

active

039559157

ABSTRACT:
In vertical continuous furnace calcining of lime, dolomite, magnesite, or the like, part of the air which is introduced at the lower end of the furnace chamber is drawn off in the area of the cooling zone within the chamber and is then reintroduced in encompassing relation into the material column in the firing zone within the furnace chamber and which is located immediately above the cooling zone, the remainder of the air flowing up through the column of material being treated in the chamber. Cleaning of the withdrawn cooling air and addition of fresh air are provided for.

REFERENCES:
patent: 3285590 (1966-11-01), Parsons
patent: 3355158 (1967-11-01), Campbell et al.
patent: 3544090 (1970-12-01), Peeters

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