Method and apparatus for the thermal treatment of fine-grained m

Details Method and apparatus for the thermal treatment of fine-grained m Method and apparatus for the thermal treatment of fine-grained m

1978-08-14

1980-08-19

Camby, John J.

Heating

Processes of heating or heater operation

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

106100, F27B 1500, C04B 702

Patent

active

042182093

ABSTRACT:
Method and apparatus for heat treatment of comminuted raw material of the type used, for example, for the production of cement in which the material is preheated in a preheater by means of hot exhaust gases from a kiln, the material is separately calcined for the deacidification of a portion of the calcium carbonate present and is subsequently burnt to completion in the kiln. The specific improvement of the present invention involves utilizing undispersed coarse pieces of fuel for the separate calcination and conducting the separate calcination at the material inlet end to the kiln.

REFERENCES:
patent: 2043459 (1936-06-01), Windecker
patent: 4004876 (1977-01-01), Sylvest
patent: 4083676 (1978-04-01), Ritzmann et al.

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