Patents

An improved process for making ceramic tiles using glauconitic sand stone

An improved process for making ceramic tiles using glauconitic sandstone which comprises grinding glauconitic sandstone, china clay, pyrophyllite and an alkaline phosphatic binder separately to a fine powder of the size in the range of-l00 to -300BSS, mixing the powders so obtained to make a blend comprising of glauconitic sandstone in the range of 40-95wt clay in the range of 0 to 50 wt pyrophyllite in the range of and binder in the range of 5-12wt moistening the said blend with water and compacting in moulds of desired size at pressure in the range of 250 to 800kg/cm2 to obtain green tiles, firing the said green tiles at a temperature in the range of 650 to 825 C for a period in the range of 50 to 120 minutes to obtain ceramic tiles.

Filing Date: 12-09-1997

Issue Date: 20-11-2004

Patent No: IN194600-India

Application No: 2594/DEL/1997

Inventor(s): Rakesh Kumar Rawlley

IPC Classification: C04B

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