Cement shaft suspension furnace and process

Details Cement shaft suspension furnace and process Cement shaft suspension furnace and process

1990-01-18

1990-12-04

Yuen, Henry O.

Heating

Processes of heating or heater operation

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

432 99, 432100, 432101, 432102, F27B 1500

Patent

active

049750461

ABSTRACT:
Process and furnace for producing clinkered cement pellets from pellets of cement-forming batch materials without melting, fusion and agglomeration of said pellets. The furnace comprises an elongate vertical suspension shaft having top, intermediate and bottom portions. Pellets are fed at the top and heated to calcining temperatures before exiting the shaft into a pre-clinkering zone beyond the bottom. The pellets are heated to pre-clinkering temperatures and deposited on a porous pellet bed through which cooling air is forced to control the exothermic clinkering reaction and to regulate the speed at which the pellets migrate through the shaft.

REFERENCES:
patent: 2742276 (1956-04-01), Azke
patent: 2948521 (1960-08-01), Heilgenstaedt
patent: 4008994 (1977-02-01), Namasaki et al.
patent: 4797092 (1989-01-01), Pieper

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