镁 砖
指　　标 牌 号
MZ-91 MZ-93 LMZ-95 LMZ-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
显气孔率 ≤20 ≤18 ≤18 ≤18 ≤17 ≤17 ≤17 ≤17
常温耐压强度 ≥40 ≥50 ≥45 ≥45 ≥45 ≥50 ≥50 ≥50