Tunnel furnace

Metallurgical apparatus – Means treating solid metal – By contact with gas

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Details

193 17, 198631, F27B 914

Patent

active

041230442

ABSTRACT:
A tunnel furnace comprises an elongate hollow structure inclined to have one end higher than the other and is reciprocable about an axis parallel to its length, heaters for heating material to be treated being incorporated in the structure.

REFERENCES:
patent: 2404650 (1946-07-01), Newkirk et al.
patent: 2521591 (1950-09-01), Martin
patent: 2886303 (1959-05-01), Rusciano
patent: 3029141 (1962-04-01), Sibakin et al.
patent: 3942659 (1976-03-01), Burmeister
patent: 4039794 (1977-08-01), Kasper

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