Tripathi, Himansu Shekhar and Ghosh, A and Mukherjee, B and Das, S K (2004) Development of sintered mullite aggregate from off grade sillimanite. Industrial Ceramics , 24 (1). pp. 35-38. ISSN 1121-7588

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Abstract

Characterisation of off grade sillimanite ore and its reaction sintering with calcined alumina to develop mullite aggregate were studied. Off grade sillimanite ore was vibro milled in water for 8 hrs. The dilatometric study of powdered sillimanite ore indicates that densification starts from 973degreesC and mullite formation starts at 1425degreesC. TiO2 (addition favours the densification process upto 1550degreesC. The mullite formed is mostly acidular in nature. Microstructure shows intergranular vitreous phase. The main crystalline phase is mullite with very small amount of corundum. Mullite sample developed at 1600degreesC without any TiO2 shows the highest strength of 1442 MPa at 1200degreesC.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Refractory
Depositing User:	Subhra Lahiri
Date Deposited:	27 Jan 2012 12:59
Last Modified:	16 Mar 2012 05:59
URI:	http://cgcri.csircentral.net/id/eprint/547

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