METHOD OF PREPARING MODIFYING ADDITIVE Russian patent published in 2001 - IPC

FIELD: lining of high-temperature units. SUBSTANCE: method comprises mixing aluminium and zirconium oxides at ratio of (6-95):(94-4) and also silicon oxide to carbon component and synthesizing by melting in electric furnace in non-oxidizing of modifying additive, ratios of said component in mixture being as follows, wt %: (Al₂O₃+ ZrO₂):SiO₂:C = (45-86):(6-20):(8-35). Aluminium, zirconium and silicon oxides are zirconium and aluminium silicates or mixture thereof with zirconium and aluminium oxides. Modifying additives synthesized by said method reduce substantially sintering temperature during oxidizing melting. EFFECT: improved properties of refractories, intended for lining of high-temperature units. 3 cl, 8 ex, 2 tbl