Diopside crystal precursor glass frit flux in production of sani

Details Diopside crystal precursor glass frit flux in production of sani Diopside crystal precursor glass frit flux in production of sani

1981-11-23

1982-10-05

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Clay containing

501142, 501143, 501144, C04B 3300, C04B 3324

Patent

active

043528902

ABSTRACT:
A process for producing feldspathic sanitary ware and the end product are disclosed in which a fluxing amount of a glass frit is used in the ceramic slip used to cast the sanitary ware. The frit contains both deflocculent oxides and flocculent alkaline earths which are leachable from the frit when it is placed in the ceramic slip. The deflocculent oxides counterbalance the effect of the flocculent alkaline earths to the extent they are respectively leached from the frit upon dispersal in a ceramic slip and maintain the slip at a workable viscosity. Upon casting and firing the slip, the present frit precipitates fine crystals of diopside having an average particle size of less than one micron which are particularly useful in lowering the firing temperature of feldspathic bodies by promoting the required degree of vitrification at lower temperatures than heretofore possible.

REFERENCES:
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patent: 2621131 (1952-12-01), Lathe
patent: 2897595 (1959-08-01), Lee
patent: 2910760 (1959-11-01), Jackson
patent: 3458331 (1969-07-01), Kroyer
Maretheu, A. et al., "Utilisation de Laitiers Siderurgiques pour la Fabrication de Carreaux de Faience", L'Industrie Ceramique, Jun. 1969, No. 619, pp. 405-414.
Mizuta H. et al., "Study on the Utilization of Granulated Slag (I), The Use for a Wall Tile Body"-Nagoya Kogyo Gijutsy Shikensho Hokuky 1976, 25(1), pp. 40-47.
Kurczyk H. G., "Synthetic Diopside and Synthetic Wollastonite-New Raw Materials for Ceramics", May 27-31, 1976, pp. 22-26; Proceedings of the 3rd CIMTEC, Rimini.

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