FIELD: metallurgy.
SUBSTANCE: proposed mix is prepared by cladding quartz sand by premade suspension from solution of carboxymethyl cellulose and periclase powder hardener, processing cladded sand in boiling bed by warm air of 50-80°C, and adding solution of alumina-boron phosphate concentrate into said solution.
EFFECT: higher mechanical properties and strength.
2 cl, 3 tbl, 2 ex
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