Reducing and smelting furnace having filter layer

Details Reducing and smelting furnace having filter layer Reducing and smelting furnace having filter layer

1994-10-06

1996-11-05

Andrews, Melvyn

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

266186, C21B 1302

Patent

active

055714757

ABSTRACT:
In a process and an apparatus for the production of liquid metal (4) from fine-grain metal oxide particles, the particles, together with hot reducing gas, are blown against a heated bulk material filter layer (9) of lump coal and/or ceramic pieces, a substantial proportion of the particles being retained on and in the filter layer and subjected to finishing reducing by the reducing gas. A high-temperature flame is produced in front of the filter layer (9) by an oxygen-bearing gas being blown against the filter layer, and the metallised particles which are retained in the filter layer are melted. They pass in the liquid condition through the filter layer (9) into a receiving space (3) for liquid metal (4).

REFERENCES:
patent: 2045639 (1936-06-01), Eulenstein et al.
patent: 2978315 (1961-04-01), Schenck
patent: 4012226 (1977-03-01), Geck et al.
patent: 4874427 (1989-10-01), Hamada et al.
patent: 4896810 (1990-01-01), Maschlanka et al.

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