The index of magnesia brick
indexMGe-20 MGe-16 MGe-12 MMGe-8 DBMK-A DBMK-B DBMK-C
MgO≥(%) 40 45 55 60 80 80 80
Cr2O3≤(%) 20 16 12 8 6-8 6-8 6-8
SiO2≤(%) --- --- --- --- 2.0 2.5 3.0
Room temperature compressive strength≥(MPa)(15-25-)24.5-24.5-24.5-24.5-40-40-40