ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Corrosion of Nozzle Refractories by Liquid Inclusion in High Oxygen Steels
Mun-Kyu ChoIn-Ho Jung
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JOURNALS OPEN ACCESS

2012 Volume 52 Issue 7 Pages 1281-1288

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Abstract

In order to understand the corrosion mechanism of stopper refractories by liquid MnO–SiO2–FeO–MnS inclusion in high oxygen steels, the chemical reaction between the liquid MnO–SiO2–FeO–MnS slag and several refractories including Al2O3–C, Spinel–C, Al2O3–AlN–C and ZrO2–C were performed at 1550°C. It is found that the reduction of the liquid inclusion can occur by C in the refractories to produce Mn–Fe–Si metallic phase and the degree reduction is important factor influencing to the chemical composition and amount of liquid inclusion. From this experimental and thermodynamic study and in plant test, it is found that ZrO2–C(13%) refractory has excellent corrosion resistance against high oxygen steel containing liquid MnO–SiO2–FeO–MnS inclusion.

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© 2012 by The Iron and Steel Institute of Japan
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