FIELD: ceramics, building industry and materials.
SUBSTANCE: invention is designated for manufacturing wall ceramic articles. The raw mixture comprises the following components in the ratio, wt.-%: microsilica in manufacturing crystalline silicon, 33.9-54.5; ash fly after combustion of brown coals, 44.5-63.5, and electrofilter dust in basic manufacturing aluminum, 1.0-2.6. Electrofilter dust represents brown color waste and comprises calcium, magnesium and aluminum fluorides, cryolite and organic substances. Method involves preparing the charge, molding, drying, roasting at 800°C and moistening ready articles by keeping in water for 24 h. Invention provides enhancing resistance to cold, reducing average density and roasting temperature of material.
EFFECT: improved method for preparing, improved properties.
2 cl, 2 tbl, 2 ex
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