High alumina brick High alumina bricks main raw material is high alumina,which is chosen,screened,removing iron and sintered.The acid-resistance,alkali-resistance are good.And the refractoriness is high.It can be used in blast furnace,hot-blast furnace,the roof of electric stove and ladle backing layer.Main Properties IndexItemLZ-75LZ-65LZ-55LZ-48Al2O3%≥75655548refractoriness,≥ ...