Process for making cement using low-grade fuels

Details Process for making cement using low-grade fuels Process for making cement using low-grade fuels

1993-03-11

1994-08-09

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106744, 106755, 106758, C04B 745, C04B 1822, C04B 1824

Patent

active

053363175

ABSTRACT:
A process for producing cement, including preheating a mixture of ground raw materials (raw meal) in a preheating cyclone to form a preheated raw meal, calcining the preheated raw meal in a calciner to form a calcined raw meal, burning the calcined raw meal in a rotary kiln with the aid of a high-grade fuel to form a cement clinker, cooling the cement clinker in a rotary kiln and grinding the cooled cement clinker. The process is characterized by replacing 50 to 70% of the high-grade fuel with a low-grade fuel, gasifying the low-grade fuel in a fluidized bed to form a resulting fuel gas, supplying a first portion of the resulting fuel gas to a main burner of the rotary kiln, a second portion of the resulting fuel gas to the exhaust gas stream from the rotary kiln and a third portion of the resulting fuel gas to the calciner.

REFERENCES:
patent: 3955995 (1976-05-01), Touborg
patent: 4081285 (1978-03-01), Pennell
patent: 4110121 (1978-08-01), Rechmeier et al.
patent: 4123288 (1978-10-01), Stringer et al.
patent: 4533396 (1985-08-01), Herchenbach et al.
patent: 4627877 (1986-12-01), Ogawa et al.
patent: 4678514 (1978-07-01), Deyhle et al.
patent: 4913742 (1990-04-01), Kwech
Krupp Polysius, Zement-Report Mar. 91, "Spexielle Calainiersysteme Fur Individuelle, Anforderungen: NO.sub.x -Minderung Bis 50% MIT PREPOL-MSC".
A. Schweizer, et al, Zement-Kalk-Gips No. 5/1991 (44th year), pp. 217-220.

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