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Steelmaking by the Electroslag Process Using Prereduced Iron Ore Pellets.

Authors
Nafziger-RH; Armantrout-CE
Source
U S Pat 3 997 332 1976 Dec; :
Link
NIOSHTIC No.
10012015
Abstract
Structurally sound steel ingots are produced by the conventional electroslag process using prereduced iron ore pellets containing as much as 2.8 pct oxygen pressed into a bar shape as a consumable electrode. A carbon source, such as silicon carbide or titanium carbide, is dispersed in the flux to prevent oxygen transfer from the flux to the ingot thus preventing blowhole porosity caused by the oxygen and allowing production of a structurally sound ingot. Alternatively, ferroalloys can be mixed with the iron ore pellets before pressing. This not only deoxidized the melt, but also permits the production of specific alloy steel compositions.
Publication Date
19761201
Document Type
PA;
Fiscal Year
1977
NTIS Accession No.
NTIS Price
Identifying No.
PAT 3,997,332
NIOSH Division
ALRC;
Source Name
U.S. Pat. 3,997,332, Dec. 14, 1976; Chem. Abstr. Not Found
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