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Rovnushkin V.A.,OAO Ural Institute of Metals | Aksel'rod L.M.,OOO Gruppa Magnezit | Smirnov L.A.,OAO Ural Institute of Metals | Spirin S.A.,OOO Gruppa Magnezit | And 3 more authors.
Refractories and Industrial Ceramics | Year: 2015

Results are provided for a laboratory study of the reaction of industrial self-dissociating slag after steel treatment in an OAO NTMK furnace-ladle unit and synthetic slag of the system CaO–SiO2–Al2O3 with five forms of periclase-spinelid refractories produced by enterprises of Gruppa Magnezit in Russia and Slovakia (Slovmag), and also two Chinese producers. Refractory slag resistance is compared, and their mineral and phase compositions are studied before and after testing. © 2015 Springer Science+Business Media New York Source

Demidov K.N.,OAO Ural Institute of Metals | Vitushchenko M.F.,AO Arselormittal Temirtau | Smirnov L.A.,OAO Ural Institute of Metals | Zolin A.N.,AO Arselormittal Temirtau | And 9 more authors.
Refractories and Industrial Ceramics | Year: 2013

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%. © 2013 Springer Science+Business Media New York. Source

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