Process for the calcination of a pulverized mineral material

Details Process for the calcination of a pulverized mineral material Process for the calcination of a pulverized mineral material

1984-10-29

1986-07-22

Yuen, Henry C.

Heating

Processes of heating or heater operation

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

432106, 110347, 110245, 110229, F27B 702

Patent

active

046016570

ABSTRACT:
Pulverized mineral material is calcined by suspending it in a current of gas constituted by a combustive gas and a fuel whose combustion furnishes the necessary calories for the calcination. To enable solid fuels rich in ash, substantially inert and difficult to condition to be used, the fuel is gasified in a fluidized bed hearth by blowing air from below through the bed whereby a gaseous fuel is disengaged from the bed and flows upwardly with the very finest particles of the solid fuel suspended therein. This is mixed with air and the mineral material to calcine the same.

REFERENCES:
patent: 4236886 (1980-12-01), Ansen et al.
patent: 4250820 (1981-02-01), Lautenschlager
patent: 4280418 (1981-07-01), Erhard
patent: 4336769 (1982-06-01), Daman
patent: 4344371 (1982-08-01), Zoschak
patent: 4419940 (1983-12-01), Cosar et al.
patent: 4430094 (1984-02-01), Gorzegno
patent: 4465460 (1984-08-01), Cosar
patent: 4477251 (1984-10-01), Cosar et al.

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