FIELD: chemistry.
SUBSTANCE: invention relates to refractory industry, in particular to production of refractory concrete mixtures, and can be used in metallurgy for lining of various thermal units, for example bottoms and walls of steel-pouring ladles, burners of rotary furnaces and other units. Refractory concrete mixture for making refractory concrete contains the following, wt.%: corundum aggregate with fraction 10-6 mm 4-8; corundum aggregate with fraction 6-3 mm 16-21; corundum aggregate with fraction 3-1 mm 13-18; corundum aggregate with fraction 1-0 mm 18-22; aluminium-magnesium spinel with fraction <0.063 mm 15-20; corundum aggregate with fraction <0.045 mm 3-6; modified reactive alumina with fraction <0.004 mm 6-9; high-alumina cement with fraction <0.045 mm 7-15; organic fibre 0.10-0.15 over 100 wt.%; dispersing alumina 1-3 over 100 wt.%.
EFFECT: high mechanical strength and heat resistance of the refractory concrete lining.
2 cl, 1 tbl, 3 ex
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