| 摘要 |
compositions of refractories, particularly, refractory bodies for stopping of pig iron tapholes of blast furnaces. SUBSTANCE: refractory body contains, mas.%: grog, 10-15; fireclay, 18-23; ground coke, 33-38; polymerized wash oil, 20-25; pitch-like product, 8-13. Pitch-like product is obtained by mixing of coal organic mass with fraction of coals tar in presence of iron components as catalysts, heating of mixture up to 300-400 C and dwelling under pressure of own gases. EFFECT: production of refractory body with optimal properties, low cost and harmless for ecology. 2 tbl
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