Apparatus for preheating a raw material charge for application t

Details Apparatus for preheating a raw material charge for application t Apparatus for preheating a raw material charge for application t

1975-09-18

1977-03-22

Camby, John J.

Heating

Work chamber having heating means

Combustion products heat work by contact

432209, 432 95, 266175, 266901, 13 33, 13 2R, F27B 304

Patent

active

040134016

ABSTRACT:
An improved arrangement for preheating a charge of raw material, illustratively an alloying charge, with hot gases prior to application of such charge to a ferroalloying kiln or other electric furnace is described. The charge to be preheated is loaded into a main vertically disposed reservoir which communicates at its bottom end with a combustion chamber adapted to generate the hot gases for preheating. A perforated transition cylinder is vertically disposed within the combustion chamber. Hot gases flow into the interior of the transition cylinder through the apertures and are directed upwardly through the charge stored in the main reservoir, thereby effecting the desired preheating action. The gases emerging from the top of the main reservoir enter a smoke chamber, from which they are discharged into suitable scrubbing and ventilating facilities. The preheated charge is selectively introduced into the electric furnace from the main reservoir via the transition cylinder.

REFERENCES:
patent: 1121559 (1914-12-01), Heslewood
patent: 2493218 (1950-01-01), Bergstrom
patent: 2607666 (1952-08-01), Martin
patent: 2948521 (1960-08-01), Heiligenstaedt
patent: 2996292 (1961-08-01), Graf et al.
patent: 3163520 (1964-12-01), Collin et al.
patent: 3598888 (1971-08-01), Tada
patent: 3702182 (1972-11-01), Leyshon
patent: 3789126 (1974-01-01), Brusa

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