Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace
Patent
1991-02-20
1992-09-22
Andrews, Melvyn J.
Metallurgical apparatus
Means for treating ores or for extracting metals
By means applying heat to work, e.g., furnace
75444, 75446, C22B 514
Patent
active
051494876
ABSTRACT:
A prereduction furnace of a smelting reduction facility of iron ore includes of a fluidizing prereduction chamber at an upper part of the prereduction furnace wherein iron ores are fed and prereduced, a gas blowing chamber at a lower part of the prereduction furnace wherein a reducing gas is fed, a ceramic main body of a distributor mounted between the fluidizing prereduction chamber and the gas blowing chamber, a metal box attached to the bottom side of the ceramic main body, which prevent adhesion of dust in the reducing gas, nozzles passing through the ceramic main body and through the metal box for injecting the reducing gas in the blowing chamber, into the prereduction chamber and a discharge pipe for discharging prereduced iron ores mounted at a bottom center portion of the prereduction chamber and extending through the ceramic main body, through the metal box, and through a bottom of the gas blowing chamber.
REFERENCES:
patent: 2914388 (1959-11-01), Kelley
patent: 3398718 (1968-08-01), Pilloton
patent: 4886246 (1989-12-01), Maeda et al.
Ariyama Tatsurou
Isozaki Shinichi
Kanatani Genji
Kawata Hitoshi
Kitano Yoshiyuki
Andrews Melvyn J.
NKK Corporation
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