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Evaluation of Refractory Performance of Basic Castables Containing Magnesium-Aluminate Sol-Gel Coatings on Graphite

  • Review Papers
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Interceram - International Ceramic Review

Abstract

A study was conducted to compare the properties of carbon-containing basic castables that incorporated graphite with and without a magnesium! aluminate sol-gel coating. A thin sol-gel coating of magnesium aluminate spinel was prepared from inexpensive precursors. The castable batch containing hydrophilic coated graphite required less water (9.5 mass-%) for mixing than the uncoated graphite (12.5 mass-%). Basic cartable containing coated graphite showed better retention of graphite mside its refractory matrix. Consequently, slag corrosion and penetration resistance were noticeably improved in the coated graphite sample. X-ray diffraction, scanning electron microscopy and investigation of physical properties were performed on the castables at different temperatures to confirm the benefits of spinel-coated graphite.

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Authors and Affiliations

  1. Dept. of Chemical Technology (Ceram. Eng. Div.), University of Calcutta, 92 APC Road, Kolkata-9, India

    P. Das, S. BasuMallick, P. Maity, S. Palit, S. Ghosh &  S. Mukhopadhyay

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  1. P. Das
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  2. S. BasuMallick
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  3. P. Maity
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  4. S. Palit
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  5. S. Ghosh
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  6. S. Mukhopadhyay
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Correspondence to S. Mukhopadhyay.

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Das, P., BasuMallick, S., Maity, P. et al. Evaluation of Refractory Performance of Basic Castables Containing Magnesium-Aluminate Sol-Gel Coatings on Graphite. Interceram. - Int. Ceram. Rev. 65, 41–46 (2016). https://doi.org/10.1007/BF03401186

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  • DOI: https://doi.org/10.1007/BF03401186

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