Process for burning limestone, dolomite or the like and annular

Details Process for burning limestone, dolomite or the like and annular Process for burning limestone, dolomite or the like and annular

1981-12-24

1984-02-14

Camby, John J.

Heating

Shaft type

Having combustion products generated in or fed to shaft

432 79, F27D 108, F27D 1502, F27B 1500

Patent

active

044314078

ABSTRACT:
A process for burning and sintering material in lump form in a shaft furnace in which part of the cooling air flowing in a counterflow through the cooling zone is removed from the shaft furnace before the upper end of the cooling zone and is introduced into the column of material in the burning zone area, accompanied by a mixture of air and fuel. As a result a reducing furnace atmosphere is obtained, which extends up to the plane of the upper combustion chambers. The invention also relates to an annular shaft furnace for performing this process.

REFERENCES:
patent: 3033545 (1962-05-01), Azbe
patent: 3142480 (1964-07-01), Azbe
patent: 3204936 (1965-09-01), Beckenbach
patent: 4205459 (1980-06-01), Koseki et al.
patent: 4212850 (1980-07-01), Deussner
patent: 4220631 (1980-09-01), Serbent et al.
patent: 4315735 (1982-02-01), Fussi et al.

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