Gas fired melting furnace

Details Gas fired melting furnace Gas fired melting furnace

1990-05-07

1992-01-07

Kastler, S.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

With means to discharge molten material

266900, 266200, 432138, F27B 916

Patent

active

050783688

ABSTRACT:
A high temperature gas fired heat transfer system ideally suited for melting metals is disclosed. The system generates a heated, reducing furnace atmosphere which prevents formation of metal oxides when the metal is melted. A unique arrangement is provided to draw a portion of the reducing atmosphere from the furnace and combust the drawn furnace atmosphere with high speeds jets of preheated combustion air which convectively impinge and heat the surface of an object to a super heat temperature. That surface is then moved into the furnace enclosure to indirectly heat by radiation and melt the metal at high throughput rates.

REFERENCES:
patent: 3782883 (1974-01-01), Nesbitt et al.
patent: 3819323 (1974-06-01), Hemsath et al.
patent: 3836320 (1974-09-01), Hemsath et al.
patent: 4581063 (1986-04-01), Oyabu et al.
patent: 4664702 (1987-05-01), Barnes et al.
patent: 4974817 (1990-12-01), Nakashima

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