Refractory brick 60%

Item:

LZ-85

LZ-80

LZ-75

LZ-65

LZ-55

LZ-48

Al2O3 %

≥85

≥80

≥75

≥65

≥55

≥48

Apparent porosity %

≤23

≤22

≤23

≤23

≤22

≤22

Cold crushing strength Mpa

≥55

≥55

≥53.9

≥49

≥44.1

≥39.2

Refractoriness

≥1790°C

≥1790°C

≥1790°C

≥1790°C

≥1770°C

≥1750°C

Refractoriness under loadin 0.2MPa

≥1550°C

≥1530°C

≥1520°C

≥1500°C

≥1450°C

≥1420°C

Permanent linear change

1500°C×2h

-0.4~0.1

-0.4~0.1

-0.4~+0.1

-0.4~0.1

-0.4~0.1

1450°C×2h

-0.4~0.1