Process for high temperature phosphate ore burning

Details Process for high temperature phosphate ore burning Process for high temperature phosphate ore burning

1979-04-16

1982-03-23

Thomas, Earl C.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423320, 432 14, 432 58, C01F 1146

Patent

active

043212387

ABSTRACT:
High temperature phosphate are burning process in which the ore is preheated by gases produced by the combustion of a fuel in the burning zone, and then enters the burning zone and is cooled by a current of cool air which is used, at least partly, as combustion in the burning zone, characterized by the fact that burning is carried out in a static combustion chamber in which the preheated ore is placed in suspension in the current of air which has cooled the burned ore and in which fuel is injected, whereby the combustion of air and fuel supplies the required heat for burning, and that the retention time of the ore in the combustion chamber is less than thirty seconds, the burned ore being blow out of the chamber by the gases resulting from the combustion of the fuel injected into the chamber.

REFERENCES:
patent: 2030628 (1936-02-01), Freeman
patent: 2733137 (1956-01-01), Swaine et al.
patent: 3266788 (1966-08-01), Jukkola
patent: 3452968 (1969-07-01), Shimiizu et al.
patent: 3869248 (1975-03-01), Hirai et al.
patent: 3872211 (1975-03-01), Wall
patent: 3998929 (1976-12-01), Leyshon
patent: 4017585 (1977-04-01), Angevine et al.
Reh, "Fluidized Bed Processing," Chemical Engineering Progress, vol. 67, No. 2 (Feb. 1971), pp. 58-63.

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