Study on preformed and in situ spinel containing alumina castable for steel ladle: Effect of fume silica content

In the present study, the effect of fume silica content on preformed and in situ spinel containing alumina spinel castable was studied by varying fume silica content at 1 and 4 wt.%. Spinel content for preformed alumina spinel castables varied from 10 to 30 wt.% and MgO content for in situ alumina s...

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Bibliographic Details
Published inInternational journal of applied ceramic technology Vol. 19; no. 6; pp. 3311 - 3322
Main Authors Kumar, Satyam, Sarkar, Ritwik
Format Journal Article
LanguageEnglish
Published Malden Wiley Subscription Services, Inc 01.11.2022
Subjects
alumina spinel castable
Aluminum oxide
calcium hexa‐aluminate (CA6)
Castability
Densification
fume silica content
Heat treatment
Ladle metallurgy
Modulus of rupture
preformed and in situ spinel
Silicon dioxide
Spinel
Steel
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Summary:In the present study, the effect of fume silica content on preformed and in situ spinel containing alumina spinel castable was studied by varying fume silica content at 1 and 4 wt.%. Spinel content for preformed alumina spinel castables varied from 10 to 30 wt.% and MgO content for in situ alumina spinel castables varied from 2.8 to 8.4 wt.%, respectively, and the distribution coefficient (q value) was maintained at .21 and .29 as per Dinger and Funk model. Different castable compositions were processed as per conventional processing technique and further evaluated for densification and strength studies after heat treatment at 110, 1000, and 1550°C. Fired samples at 1550°C were further evaluated for the hot modulus of rupture study at 1400°C and phase analysis study of the matrix phase. Also, the fired samples were studied for microstructural evaluation.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.14127