Rotary hearth furnace

Details Rotary hearth furnace Rotary hearth furnace

1997-08-11

1999-05-04

Walberg, Teresa

Heating

Work chamber having heating means

Having means by which work is progressed or moved mechanically

432136, 432152, 432 72, F27B 916

Patent

active

058996885

ABSTRACT:
A rotary furnace for the treatment of minerals, includes an annular chamber provided with a material feeder apparatus and discharge apparatus for the material, disposed adjacent one another in a certain sector of the chamber. A plurality of burners are arranged all along the annular chamber on the side walls and on the top wall thereof. The furnace further includes a conduit for extracting the discharge gases. The gases from a first zone of the chamber downstream of the feeder means and upstream of the gas extraction means, with respect to the direction of rotation of said hearth, are transferred into a second zone upstream of the material discharge means and downstream of the gas extraction means through forced conveying of the gases by suction at the first zone and by pressure delivery at the second zone. A flow regulator is used to regulate the forced conveying.

REFERENCES:
patent: 3787171 (1974-01-01), Cromp
patent: 4133636 (1979-01-01), Flynn
patent: 4662840 (1987-05-01), Ellison
patent: 4701214 (1987-10-01), Kaneko et al.
patent: 5186741 (1993-02-01), Kotraba et al.

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