... properties good thermal insulation performance High-Alumina Brick for Blast FurnaceFireproof BrickFeatures:high -temperature endurable ... blast furnace with a good result.Specifications:IndexHigh-alumina brick for blast furnaceGL-55GL-65GL-75Al2O3, % ≥556576Fe2O3, ... hot blast stove, blast furnace, metallurgy, construction, chemical industry, electric power and machine building. High-Alumina Brick for ...