MONOLITHIC REFRACTORY FOR BLAST FURNACE TROUGH

摘要

PROBLEM TO BE SOLVED: To provide a monolithic refractory for a blast furnace trough, excellent in slag resistance and molten iron resistance and having a longer life compared to conventional refractories.SOLUTION: A refractory raw material consists of 30 to 60 wt.% of a first refractory raw material having particle size of less than 0.3 mm and 40 to 70 wt.% of a second refractory raw material having particle size of 0.3 mm or more. 100 wt.% of the first refractory raw material contains 0 to 40 wt.% of a silicon carbide raw material, 10 to 95 wt.% of an alumina raw material, 5 to 50 wt.% of a carbon raw material. 100 wt.% of the second refractory raw material contains 60 to 100 wt.% of the silicon carbide raw material and 0 to 40 wt.% of the alumina raw material.