FIELD: steelmaking. SUBSTANCE: briquette suitable un manufacture of high-quality steel is made from compacted aluminum- and alumina-containing particles, in particular alumina-coated aluminum cuttings 1-2 mm thick. Bulk density of briquette is between 0.85 and 0.95 and aluminum-to-alumina ratio between 100: 6 and 100:13. Ratio of closed to open porosity of briquette is advantageously 3: 1 and its weight 2 to 15 kg. EFFECT: improved mechanical quality of finished rolled steel due to reduced amount of sulfur and oxygen impurities in the form of nonmetallic inclusions resulted from effective aluminum-assisted deoxidation and alumina-assisted refining. 3 cl, 2 tbl
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Authors
Dates
2004-04-10—Published
2002-12-27—Filed