Burner and method for metallurgical heating and melting

Heating – Processes of heating or heater operation – Controlling flame position or work atmosphere

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Details

432103, 431 2, 431 10, 431354, F27D 700, F23M 304

Patent

active

051453614

ABSTRACT:
An object of this invention is to reduce the amount of substantially pure oxygen required during heating, refining and melting operations in metallurgical processes.
In accordance with the invention, a burner (10) is provided in which air is aspirated and mixed with fuel and substantially pure oxygen. Additionally, swirl vanes (26) are provided to impart a swirling motion to the gasses in the burner, producing a flame which is distributed over a greater volume of the charge to be heated in the furnace. The aspirated air contains nitrogen which is heated by the combustion flame and is dissipated through the charge to assist in the melt down of the charge. Oxygen is introduced into the burner through a nozzle (22), which extends into the throat of the burner tube (12), forming a venturi (20,21) to aspirate the air into the burner.

REFERENCES:
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patent: 3404199 (1968-10-01), Hoffmann
patent: 3441634 (1969-04-01), Iken et al.
patent: 3488700 (1970-01-01), Iken et al.
patent: 3888621 (1975-06-01), Williams
patent: 4017253 (1977-04-01), Wielang et al.
patent: 4130388 (1978-12-01), Flanagan
patent: 4189914 (1980-02-01), Marek et al.
patent: 4329932 (1982-05-01), Takahashi et al.
patent: 4517020 (1985-05-01), Steinbiss et al.

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