Agrawal, P and Maiti, Kedar Nath (2008) Influence of hydrocyclone beneficiated clay blend on technological properties and colour indices of vitreous porcelain the body. Industrial Ceramics , 28 (3). pp. 195-204. ISSN 1121-7588

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Abstract

The possibility of utilizing Indian clays in vitreous porcelain the production with a view to replace imported Ukrainian clays in the composition was assessed. A ``Beneficiated Clay Blend'' (BCB) was prepared by blending of selected five different Indian clays. The crude blend was beneficiated through two different integrated techniques utilizing levigation and hydrocyclone classification. The prepared BCBs were characterized and incorporated singularly (35 wt%.) in a standard vitreous porcelain tile composition. Their effect on technological properties with emphasis on colour indices were studied. Hydrocyclone classification of clays resulted in kaolinite enrichment at the expense of free silica and other impurities. The vitrification parameters of hydrocyclone beneficiated BCB containing bodies conformed to WA. % <= 0.08, B. D. >= 2.2 g. cm(-3), fired MOR >= 4 7 Mpa, as per IS 15 622 : 2006 specification for pressed ceramic tiles with water absorption E <= 0.08%. The unfired and fired modulus of rupture and CIE whiteness were found superior to that of Ukrainian clay (20-25 wt%) containing bodies. The research established the possibility of replacement of Ukrainian clays by Indian clays in production of vitreous porcelain tiles through beneficiation.

Item Type:	Article
Subjects:	Whiteware
Divisions:	Advanced Clay & Traditional Ceramics
Depositing User:	Bula Ghosh
Date Deposited:	17 Jan 2012 09:41
Last Modified:	07 Mar 2012 11:11
URI:	http://cgcri.csircentral.net/id/eprint/197

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