| abstract |
FIELD: metallurgy. n SUBSTANCE: refractory product based on periclase, alumina, chromite, zirconium oxide, silicates or mixtures thereof is caracterised by the pores 40-70% filled with oxides of aluminium, zirconium, chromium individually or with their mixtures. The method refractory product production includes impregnation of the product with aqueous solutions of hydroxysalts of aluminium, zirconium, chromium with oxides concentration within 15-50% individually or as mixture, and heat treatment is carried out at temperature not below 250°C. Filling of pores with metal hydroxysalts is carried out under vacuum repeatedly. Aluminium and/or zirconium hydroxychloride, aluminium and/or zirconium hydroxynitrate, and hydroxychromates of aluminium, sodium or zirconium are used for impregnation. n EFFECT: increased refractory resistance to corrosive action of slag melt, increased thermomechanical properties at operation temperature. n 4 cl, 1 tbl, 17 ex |