BASIC MONOLITHIC REFRACTORY MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a magnesia-chromium-based monolithic refractory material usable in e.g. electric furnaces for steel manufacture, excellent in sinterability and affording improved durability. SOLUTION: This refractory material, a magnesia-chromium-based ramming material, is obtained by mixing 95-55 wt.% of a combination of a magnesia aggregate with chromium ore so as to result in 90-50 wt.% MgO and 5-20 wt.% Cr2 O3 with 5-45 wt.% of a dolomite aggregate containing 70-15 wt.% CaO. This refractory material affords a robust monolithic structure with markedly improved durability from the initial stage of its use through sintering process.