site logo

Introduction to the classification of high alumina refractory bricks according to the content of Al2O3

Introduction to the classification of high alumina refractory bricks according to the content of Al2O3

High alumina refractory bricks are divided into three grades according to the content of Al2O3: Class I (Al2O3>75%); Class II (Al2O3 is 60%~75%); Class III (Al2O3 is 48%~60%). According to the mineral composition, it can be divided into: low mullite (including sillimanite) and mullite (Al2O3 is 48%~71.8%), mullite-corundum and corundum-mullite (Al2O3 is 71.8%~95%), corundum (Al2O3 is 95%~100%) and other refractory bricks.

13 XNUMX