Burhanuddin, . and Kumar, A and Kumar, P and Ghosh, A and Sinhamahapatra, S and Tripathi, Himansu Sekhar (2015) Effect of zirconia on densification and properties of natural Indian magnesite. International Journal of Mineral Processing, 144. pp. 40-45. ISSN 0301-7516

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Abstract

Indian magnesite mineral has substantial amount of impurities like CaO, SiO2 & Fe2O3. During sintering at elevated temperature these impurities react to form low melting phases like monticellite (CMS), which can degrade the high temperature properties of magnesite. In the present study, ZrO2 was added to reduce the formation of low melting phase in order to improve the hot strength. Amount of additive was varied between 2 and 6 wt.% with respect to raw magnesite. It was observed that addition of ZrO2 reduces the formation of low melting CMS at higher temperature and improves the flexural strength at 1200 degrees C. Periclase grain shape also changed from rounded to subrounded in the presence of zirconia. (C) 2015 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Bidhan Chaudhuri
Date Deposited:	11 Jan 2016 09:02
Last Modified:	11 Jan 2016 09:02
URI:	http://cgcri.csircentral.net/id/eprint/3125

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