Effect of zircon surface coating on alumina grog and its influences on the properties of low‐cement castables

In this investigation, four types of low‐cement castables (LCC) were prepared with sintered mullite, high alumina grog, unfired, and fired zircon coated on alumina grog. These castables were evaluated in terms of their physical, thermal, and thermomechanical properties. The castables prepared using...

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Veröffentlicht in:International journal of applied ceramic technology 2022-01, Vol.19 (1), p.569-581
Hauptverfasser: Krishnan, M., Manikandan, R., Thenmuhil, D.
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Thenmuhil, D.
description In this investigation, four types of low‐cement castables (LCC) were prepared with sintered mullite, high alumina grog, unfired, and fired zircon coated on alumina grog. These castables were evaluated in terms of their physical, thermal, and thermomechanical properties. The castables prepared using sintered mullite showed good physical and thermal properties with higher TSR than castables with fired zircon coated on alumina grog due to higher mullite with lower anorthite phases. Fired zircon coated on alumina grog castables were superior with lower corrosion and higher TSR of castables to those of castables with unfired zircon coated on alumina grog and high alumina grog due to formation of zircon and zirconia phases and surface coated on alumina grog gave better corrosion resistance. Castables prepared using unfired zircon coated on alumina grog and high alumina grog showed poorer properties than the other castables due to formation of higher porosity of alumina grog.
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subjects Alumina
Aluminum oxide
Anorthite
Calcium aluminum silicates
Coating effects
coatings
Corrosion resistance
low‐cement castables
Mullite
refractories
scanning electron microscopy
Sintering (powder metallurgy)
Thermodynamic properties
Thermomechanical properties
Zircon
Zirconium dioxide
title Effect of zircon surface coating on alumina grog and its influences on the properties of low‐cement castables
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