CERAMIC MIXTURE Russian patent published in 2011 - IPC C04B33/132 

FIELD: chemistry.

SUBSTANCE: invention relates to ceramic mixtures, which can be used in making ceramic facing materials. The ceramic mixture which contains a clay component and spent foundry sand, contains bentonite as the clay component and additionally contains gas cleaning sludge from aluminium production, scrap glass and a fluidising agent based on sodium salts, with the following ratio of components in wt %: bentonite 8-19, spent foundry sand 8-75, gas cleaning sludge from aluminium production 8-10, scrap glass 4.5-6.3, fluidising agent based on sodium salts 0.5-0.7. The sludge has the following composition in wt %: graphite 70-73, cryolite 8-10, corundum 5-6, fluorite 4-6, nepheline 4-8, diaspore 2.

EFFECT: obtaining ceramic facing materials with significantly improved physical and technical properties, specifically flexural strength.

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