CRUDE MIXTURE FOR MAKING CERAMIC HEAT-EFFICIENT WALL ARTICLES Russian patent published in 2012 - IPC C04B33/13 

FIELD: chemistry.

SUBSTANCE: invention relates to industry of construction materials, particularly ceramic materials, and can be used in making heat-efficient wall articles. The crude mixture for making ceramic heat-efficient wall articles contains montmorillonite clay and carbonate-silicic rock, with the following ratio of components in wt %: montmorillonite clay 30-70; carbonate-silicic rock 30-70. The montmorillonite clay contains the following in wt %: montmorillonite 35-46; hydromica 5-8; kaolinite 5-7; quartz 40-45; calcite 0.5-1.5; and the carbonate-silicic rock contains the following in wt %: calcite 40-45; quatz 5-8; opal-crystobalite 10-20; montmorillonite 10-15; zeolite 14-16; hydromica 8-12, with the following grain composition: particle size 0.5-0.063 mm - 16-20%; 0.063-0.001 mm - 70-74%; less than 0.001 - 10-15%.

EFFECT: low density and high strength of articles.

6 ex, 1 tbl