Compositions for ceramic tiles
AssigneeBCT Limited
InventorsNiall Scarth, Timothy Strevens Evitt
Life of this patent
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Abstract
A composition for ceramic tiles, the composition having being formulated from materials including granite and comprising the following components, given in weight percent, based on the total weight of the composition: ______________________________________ SiO.sub.2 56-64 wt % Al.sub.2 O.sub.3 15-17 wt % K.sub.2 O 2-3 wt % Na.sub.2 O 0.5-1.5 wt % CaO 5-5.7 wt % MgO 0.5-0.6 wt % L.O.I. 6-7 wt %. ______________________________________
Claims20
A composition for ceramic tiles, the composition being formulated from materials including granite and comprising the following components, given in weight percent, based on the total weight of the composition:
- ______________________________________ SiO.sub.2 55.8-63.5 wt % Al.sub.2 O.sub.3 15-17 wt % K.sub.2 O 2-3 wt % Na.sub.2 O 0.5-1.5 wt % CaO 6.13-6.31 wt % MgO 0.5-0.6 wt % L.O.I. 6-7 wt %. ______________________________________
A composition for a tile body comprising 5-50 wt % sand, 20-60 wt % clay, 5-15 wt % limestone and 5-40 wt % granite.
Dependencies are inferred from the claim text.