Reducing and smelting furnace having filter layer
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United States of America Patent
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-
Nov 5, 1996
Issued Date -
N/A
app pub date -
Oct 6, 1994
filing date -
Mar 14, 1991
priority date (Note) -
Expired
status (Latency Note)
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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).
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