S S, Amritphale and Sanjeev, Bhasin and Dr., Navin Chandra (2006) Energy efficient process for making pyrophyllite-based ceramic tiles using phosphoric acid and mineralizers. Ceramics International , 32. pp. 181-187. ISSN 0272-8842

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The processing parameters for making ceramic tiles in the pyrophyllite–phosphoric acid binder (P–PA) system have been optimized. The optimized raw material composition requires sintering at a lower temperature of 950 °C. The X-ray powder diffraction studies on the powdered sample of optimized composition have confirmed the presence of dehydroxylate pyrophyllite, tridymite (T-AlPO4), cristyoballite (C-AlPO4) forms of aluminium phosphate and formation of silico-phosphate (SiP2O7) and alkali aluminium silicates (NaAlSiO4, KAlSi3O8). The IR studies of the sample show Al–O, Si–O·P–O and Na/K–O linkages. The thermal analysis shows the formation of dehydroxylate pyrophyllite and different forms of AlPO4. Scanning electron microphotograph reveals the chunky morphology of the dehydroxylate pyrophyllite, the rhombohedral morphology of T-AlPO4 and spherical C-AlPO4 and silico-phosphate particles.

Item Type: Article
Subjects: CSIR-800 > Environmental Studies/Chemistry
Depositing User: Mr. B.K. Prasad
Date Deposited: 03 Oct 2013 09:33
Last Modified: 05 Mar 2014 10:35
URI: http://ampri.csircentral.net/id/eprint/641

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