Rotary hearth furnace with preheat conveyor

Details Rotary hearth furnace with preheat conveyor Rotary hearth furnace with preheat conveyor

1977-04-19

1978-09-05

Schwadron, Martin P.

Heating

Work chamber having heating means

Combustion products heat work by contact

432 82, 432138, 432177, F27B 916

Patent

active

041116445

ABSTRACT:
Rotary furnace and preheater structure, wherein a billet is heated on an enclosed preheat conveyor where waste gases from the rotary hearth furnace preheat the billet counter to the billet travel direction. The preheated billet is inserted into the rotary hearth furnace wherein combustion gases, exiting from burners mounted in the furnace roof or sidewalls, flow counter to the hearth rotation direction and exit into the enclosed preheat conveyor. A baffle, depending from the stationary furnace roof, controls combustion gas movement counter to the billet travel direction in the furnace, and forces the combustion gases out of the furnace through a flue communicating with the preheat conveyor. A source of aspiration is provided to communicate with the preheat conveyor, and thus to facilitate combustion gas movement therethrough.

REFERENCES:
patent: 457589 (1891-08-01), DeNavarro
patent: 1576371 (1926-03-01), Seeber
patent: 2296791 (1942-09-01), Keener et al.
patent: 2530595 (1950-11-01), Blaha

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