Cement shaft suspension furnace and process

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

1990-08-23

1991-09-03

Yuen, Henry C.

Heating

Shaft type

Having combustion products generated in or fed to shaft

432100, 432101, F27D 108

Patent

active

050449427

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: 3887326 (1975-06-01), Townley
patent: 3958919 (1976-05-01), Kjell-Berger
patent: 4747773 (1988-05-01), Predescu et al.
patent: 4764107 (1988-08-01), Sundermann et al.
patent: 4797092 (1989-01-01), Pieper
patent: 4850861 (1989-07-01), Poroshin
patent: 4886448 (1989-12-01), Schurmann

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