Method for the treatment of finely grained material, particularl

Details Method for the treatment of finely grained material, particularl Method for the treatment of finely grained material, particularl

1977-09-14

1980-02-05

Yuen, Henry C.

Heating

Tumbler-type rotary - drum furnace

Having combustion products generated in or fed to drum

106100, 432 58, F27B 1500

Patent

active

041870719

ABSTRACT:
A method and mechanism for calcining cement wherein the material is preheated in a precalcining zone and a vertical conduit leads heated discharge gases upwardly from a main calcining furnace, a supply of fuel and a supply of oxygen is fed to a preoxidation zone beneath the precalcining zone and raw material is fed into an admixing area above the burner with a deflector preventing particles from falling down into the preoxidation zone with the fuel being partially oxidized so that controlled heating and controlled oxidation occurs in the precalcining zone.

REFERENCES:
patent: 3881862 (1975-05-01), Nishida et al.
patent: 3887326 (1975-06-01), Townley
patent: 3904353 (1975-09-01), Bosshard et al.
patent: 3910754 (1975-10-01), Weber et al.
patent: 3940236 (1976-02-01), Weber et al.
patent: 3958919 (1976-05-01), Kjell-Berger
patent: 3986818 (1976-10-01), Denssner et al.
patent: 4002420 (1977-01-01), Christiansen
patent: 4025295 (1977-05-01), Touborg
patent: 4060375 (1977-11-01), Weber et al.

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