FIELD: foundry work. SUBSTANCE: mixture has refractory filler, material on magnesium oxide-base, metal salt and water. Partially fired finely divided magnesite is used as a material on magnesium oxide-base at the following ratio of components, mas. p. : refractory filler 50-99; partially fired finely divided magnesite 1-50; water 2-35. Powder-like material (Ssp.gr>150 m2/kg is a source of partially fired magnesite containing magnesium oxide (MgO) 75-87 mas. p. , and magnesium carbonate ((MgCO3)) also 2-30 mas. p. Mixture has additionally 0.1-15.0 mas. p. mono- and/or bi-, trivalent metal salt of sulfuric or hydrochloric acid. EFFECT: enhanced quality of mixture. 2 cl, 2 tbl
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