high alumina brick used in blast furnace low apparent porosity,good strength good chemical performance Al2O3:65% c.c.s:58.8 high alumina brick used in blast furnaceItemGL-65GL-55GL-48Al2O3 %655548Fe2O3222P.L.C 1500’C*2h0- -0.20- -0.20- -0.2C.C.S58.84949A.P191918Refractoriness ‘C179017701760It has good performance such as low apparent porosity,good strength,good thermal resistence,good anti-acid, ...