Process for smelting or melting ferrous or non-ferrous metal fro

Details Process for smelting or melting ferrous or non-ferrous metal fro Process for smelting or melting ferrous or non-ferrous metal fro

1989-01-05

1992-09-22

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75499, 75576, 75707, C22B 500, C22B 916

Patent

active

051493632

ABSTRACT:
Process and apparatus for producing ferrous or non-ferrous metals from a charge formed by self-reducing agglomerates (comprising pulverized ores, carbonaceous material plus a binder) consisting the apparatus of a shaft furnace, comprising a cylindrical or conical shaft (3), having, at the top portion thereof, loading gates or devices (1) and an outlet for gases through a chimney (19) or a chamber leading the same to heat regenerators (9) to pre-heat blown-in air and also having one or more rows of tuyeres (15) for blowing air; and a cylindrical or conical hearth (5) having a diameter greater than that of shaft (3) by an amount sufficient for positioning fuel feeders (4) directly over a fuel bed; and on the lower part, one or more rows of tuyeres (13) distributed so as to blow air oxygen enriched or not and injecting or not liquid gaseous, or pulverized fuels, this same apparatus being capable of melting 100% metallic charges of any metal and alloys or different proportions of metallic forms and self-reducing agglomerates.

REFERENCES:
patent: 2167596 (1939-07-01), Vial
patent: 3186830 (1965-06-01), Moore et al.
patent: 4111687 (1978-09-01), Syska
patent: 4564389 (1986-01-01), Yamaoka et al.
patent: 4874427 (1989-10-01), Hamada et al.

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