Reduced emissions metal melting furnace

Details Reduced emissions metal melting furnace Reduced emissions metal melting furnace

1993-10-29

1995-03-14

Andrews, Melvyn J.

Metallurgical apparatus

With means to preheat gas

By remote heat exchanger

266217, 266900, C22B 916

Patent

active

053971094

ABSTRACT:
A vertical shaft furnace for melting non-ferrous metals, such as copper, aluminum, and their alloys, includes metal blocks disposed in an annular wall just beneath the charging section of the furnace. Preheated air is forced into the furnace shaft through openings in the wall of metal blocks to burn or oxidize substantially all the CO gas contained in the combustion gases rising from the melting chamber of the furnace. A pressurized plenum surrounding the shaft adjacent the charge opening is used to preheat ambient air which is then supplied under pressure to another plenum above the melting chamber where the preheated air is introduced into the shaft.

REFERENCES:
patent: 1889757 (1932-12-01), Miller
patent: 3545918 (1970-12-01), Frundl et al.
patent: 4309170 (1982-01-01), Ward
patent: 4311519 (1982-01-01), Berry
patent: 4842256 (1989-06-01), Bardenheuer
patent: 4844426 (1989-07-01), Barnes et al.

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