Apparatus for calcining powder materials

Details Apparatus for calcining powder materials Apparatus for calcining powder materials

1976-05-25

1977-11-22

Camby, John J.

Heating

With heating gas conveying, agitating, scattering or...

432 14, 432106, F27B 1500

Patent

active

040593932

ABSTRACT:
The combustion air, which is induced into a calcining furnace (calciner) from the lower end thereof and is vigorously swirled upward along the furnace wall, is burned by a plurality of burners and the negative pressure region may be developed at the center portion of the furnace. The exhaust gases leaving a rotary kiln, in which the calcined raw materials are burned to clinker, are led upwardly from the center of the furnace bottom into the said negative region and mixed with combustion gases. The raw material particles may be fed directly into the said negative region or to kiln exhaust gases so as to be entrained into the said region.

REFERENCES:
patent: 2100907 (1937-11-01), McGehee et al.
patent: 3140862 (1964-07-01), Schoppe
patent: 3869248 (1975-03-01), Hirai et al.

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