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Formation of Magnesia Slags of Sensible Composition with Converter Processing of High-Phosphorus Cast Iron and Application of a Wear-Resistant Slag Skull to a Lining Using a Magnesia-Alumina Flux1

Formation of Magnesia Slags of Sensible Composition with Converter Processing of High-Phosphorus... Processes are considered for conversion of high-phosphorus cast iron during steel smelting in 300-ton oxygen converters of AO Arselormittal Temirtau beneath magnesia slags of sensible composition. Technology is developed and assimilated, including application towards the end of blowing with oxygen of saturated magnesia slag (8 − 11% MgO) with basicity 3.0 − 3.4 and formation of a wear-resistant skull coating (with resistance of 1–2 melts) on the lining during slag blowing with high-pressure nitrogen with additions of magnesia alumina flux (MAF). Use of MAF flux provides an increase in slag MgO content (up to 9 − 10%) with maintenance of required metal dephosphorizing within the limits 97.1 − 98.1% with a phosphorus content in metal on average of 0.013 − 0.017%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Formation of Magnesia Slags of Sensible Composition with Converter Processing of High-Phosphorus Cast Iron and Application of a Wear-Resistant Slag Skull to a Lining Using a Magnesia-Alumina Flux1

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Publisher
Springer Journals
Copyright
Copyright © 2013 by Springer Science+Business Media New York
Subject
Material Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
DOI
10.1007/s11148-013-9538-2
Publisher site
See Article on Publisher Site

Abstract

Processes are considered for conversion of high-phosphorus cast iron during steel smelting in 300-ton oxygen converters of AO Arselormittal Temirtau beneath magnesia slags of sensible composition. Technology is developed and assimilated, including application towards the end of blowing with oxygen of saturated magnesia slag (8 − 11% MgO) with basicity 3.0 − 3.4 and formation of a wear-resistant skull coating (with resistance of 1–2 melts) on the lining during slag blowing with high-pressure nitrogen with additions of magnesia alumina flux (MAF). Use of MAF flux provides an increase in slag MgO content (up to 9 − 10%) with maintenance of required metal dephosphorizing within the limits 97.1 − 98.1% with a phosphorus content in metal on average of 0.013 − 0.017%.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Jul 18, 2013

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