Method for improved manufacture of cement in long kilns

Details Method for improved manufacture of cement in long kilns Method for improved manufacture of cement in long kilns

1994-03-09

1995-10-03

Yuen, Henry C.

Heating

Tumbler-type rotary - drum furnace

110246, 432106, F27B 700

Patent

active

054547156

ABSTRACT:
The present invention is directed to a method and apparatus for controlling the kiln gas stream in a conventional long wet or dry process cement kiln. A portion of the kiln gas stream can be withdrawn from the rotary kiln vessel at a point upstream, relative to kiln gas flow of the chain system in the mineral drying zone. Alternatively, or in conjunction with bypass formation, the apparatus can be used to add tertiary air to the kiln gas stream to promote combustion efficiency downstream of the clinkering zone. Use of the present apparatus to form a kiln gas bypass stream enhances operating efficiencies of long kilns by reducing dust loss, by facilitating isolation of high alkali by-product streams, by reducing alkali content of collected kiln dust, by increasing energy efficiency of long kiln operation, and by allowing greater overall control in the cement manufacturing process.

REFERENCES:
patent: 3507482 (1981-04-01), Kraszewski et al.
patent: 3865541 (1975-02-01), Wilson et al.
patent: 3888621 (1975-06-01), Williams
patent: 3915806 (1975-11-01), Giraud
patent: 4123332 (1978-10-01), Rotter
patent: 4126471 (1978-11-01), Herchenbach et al.
patent: 4249890 (1981-02-01), Graham
patent: 4276092 (1991-06-01), St. John et al.
patent: 4286993 (1981-09-01), Lovichi et al.
patent: 4329180 (1982-05-01), Herchenback et al.
patent: 4541346 (1985-09-01), Culliford
patent: 4583468 (1986-04-01), Reed et al.
patent: 5073107 (1991-12-01), Lask
patent: 5083516 (1992-01-01), Benoit et al.
patent: 5100314 (1992-03-01), Rierson
"Cenemt-Data-Book", 1976 Bauverlag GmbH; Wiesbaden and Berlin.

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