Equipment for and method of calcination of mineral materials wit

Details Equipment for and method of calcination of mineral materials wit Equipment for and method of calcination of mineral materials wit

1996-07-19

1998-02-03

Bennett, Henry A.

Heating

Tumbler-type rotary - drum furnace

Having combustion products generated in or fed to drum

432 14, 432 58, F27B 1500

Patent

active

057137340

ABSTRACT:
An equipment for and a method of calcining mineral materials comprising a precalciner consisting of a combustion zone followed by a reaction zone and then by a contact zone and by a post-combustion zone, the latter communicating itself with a separating cyclone, the reaction zone being fed with smokes coming from a firing furnace, the supply of mineral material being distributed between the combustion zone and the contact zone, the invention being applicable in particular to the manufacture of cement clinker while considerably decreasing the emission of nitrogen oxides.

REFERENCES:
patent: 4514170 (1985-04-01), Kupper
patent: 4530661 (1985-07-01), Herchenbach et al.
patent: 4568276 (1986-02-01), Fujisawa
patent: 4747879 (1988-05-01), Wolter et al.
patent: 4929178 (1990-05-01), Maury et al.
patent: 5364265 (1994-11-01), Paliard
patent: 5454714 (1995-10-01), Paliard
E. Steinbiss, "Erfahrugen mit der Vorcalcinierung unter Berucksichtigung von Ersatzbrennstoffen", Zement-Kalk-Gips, vol. 32, No. 5 (May 1979) pp. 211-221.
Y. Ueda et al., "Coal firing of reinforced suspension preheater (RSP) process", Zement-Kalk-Gips, vol. 36, No. 4 (Apr. 1983) pp. 199-207.
M. Champonnois, "Latest developments in precalcination", Zement-Kalk-Gips, vol. 41, No. 3 (Mar. 1988) pp. 118-124.
W.H. Duda, "Suspension preheaters with precalciner", Cement-Data-Book, vol. 1, 3rd. Ed. (1985) pp. 473-519.

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