RAW MIX FOR MANUFACTURING REFRACTORY MATERIAL Russian patent published in 1996 - IPC

FIELD: building materials industry. SUBSTANCE: composition comprises (wt%): 50-67 olivinite recrystallized or of cryptocrystalline form with modulus of basicity of 1.1- 1.2 having 0.15-3 mm fraction; 30-45 modified mixture of preclase or olivinte recrystallized or of cryptocrystalline form having not more than 2 mm fractions and magnesial spinel having 0.063 mm fractions in 4:1 to 1.5:1 ratio; and 3-5 inorganic bond consisting of sodium polyphosphate-lignosulfonate. EFFECT: reduced porosity, improved streungth, clinker resistance and thermal stability.