Method and apparatus for the thermal treatment of alkali-contain

Details Method and apparatus for the thermal treatment of alkali-contain Method and apparatus for the thermal treatment of alkali-contain

1978-09-14

1980-05-06

Yuen, Henry C.

Heating

Tumbler-type rotary - drum furnace

Having combustion products generated in or fed to drum

432 58, 106100, F27B 1500, F27B 702

Patent

active

042015464

ABSTRACT:
A method and apparatus for the thermal treatment of alkali-containing pulverent raw material used in the manufacture of cement in which the material is preheated in a preheater and after sintering in a furnace is conveyed to a cooler. Alkali free exhaust air from the cooler is conveyed into the preheater for heating the material and the alkali-containing furnace exhaust gases are cooled by means of adding a portion of the pulverized raw material to them in a heat exchanger. The alkali salts are condensed and are separated off in a dust collecting chamber.

REFERENCES:
patent: 3235239 (1966-02-01), Petersen
patent: 3452968 (1969-07-01), Shimizu et al.
patent: 3864075 (1975-02-01), Christiansen
patent: 3869248 (1975-03-01), Hirai et al.
patent: 3873331 (1975-03-01), Kondo et al.
patent: 3923536 (1975-12-01), Kobayashi
patent: 3926651 (1975-12-01), Ichikawa et al.
patent: 4071310 (1978-01-01), Chestem
patent: 4105396 (1978-08-01), Ritzmann

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