Method and system for thermal treatment of fine-grained material

Details Method and system for thermal treatment of fine-grained material Method and system for thermal treatment of fine-grained material

1991-01-29

1992-03-24

Yuen, Henry C.

Heating

Processes of heating or heater operation

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

432106, 110246, F27B 702

Patent

active

050982850

ABSTRACT:
A method and apparatus for calcining fine grained material in the manufacture of cement clinker wherein material is preheated and partially calcined in a cyclone preheater, further partially calcined by a waste zone wherein waste material such as used tires are burned in an excess of oxygen, completely calcined in a kiln, the exhaust gases from the waste zone and kiln fed to a separate auxiliary burning zone which is supplied only with fuel and utilizes the excess oxygen from the waste zone reducing the presence of CO and the CO surges, and the heat from the burning zone is fed to the preheaters to further precalcine the material.

REFERENCES:
patent: 4201546 (1980-05-01), Herchenbach et al.
patent: 4295823 (1981-10-01), Ogawa et al.
patent: 4299564 (1981-11-01), Herchenbach et al.
patent: 4470849 (1984-09-01), Abelitis et al.
patent: 4514170 (1985-04-01), Kupper
patent: 4850290 (1989-07-01), Benoit et al.

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