The main varieties have magnesia bricks, middle-grade, magnesitebricks and high purity magnesia bricks. Its mineral is MgO, havehigh volume steady and corrosion resistant, it is used widely forhigh -tempera-ture furnace of steel and non-ferrous metalmaking.

CHEM.COMP(%) BRAND
MZ-91 MZ-93 MZ-95 MZ-97 DMZ-95 DMZ-97A DMZ-97B DMZ-98
MgO(%) ≥91 ≥93 ≥95 ≥97 ≥95 ≥97 ≥96.5 ≥97.5
CaO(%) ≤3 ≤2.5 ≤2.0 ≤1.5 ≤1.5 ≤1.2 ≤1.5 ≤1.0
SiO2(%) - - ≤2.0 ≤1.2 ≤1.5 ≤0.8 ≤1.2 ≤0.5
A.P. ≤20 ≤18 ≤18 ≤18 ≤17 ≤17 ≤17 ≤17
CCS ≥40 ≥50 ≥45 ≥45 ≥45 ≥50 ≥50 ≥50
0.2MPaç«ÂÂÂÂÂÂÂÂÂÂÂÂ??�0.6(oC)
Initial Softening
Temperature 0.2MPa≥(°C) ≥1520 ≥1550 ≥1650 ≥1700 ≥1650 ≥1700 ≥1700≥1700