Buy low cost high performance "High Alumina Bricks" have the characteristics of strong volume stability at high temperatures, good thermal shock resistant, wear resistance and chemical corrosion resistance. They are usually used on transitional zone and reheater of cement rotary kiln and other thermotechnical equipment that requires thermal shock resistance.
 
Item
MGM-AB85
MGM-AB80
MGM-AB75
MGM-AB65
MGM-AB55
Al2O3 %
≥85
≥80
≥75
≥65
≥55
Apparent porosity %
≤23
≤22
≤23
≤23
≤22
Cold crushing strength Mpa
≥55
≥55
≥50
≥45
≥40
Refractoriness
≥1790
≥1790
≥1790
≥1790
≥1770
Refractoriness under loadin 0.2MPa
≥1550
≥1530
≥1520
≥1500
≥1450
Permanent linear change
1500×2h
-0.4~0.1
-0.4~0.1
0.4~0.1
-0.4~0.1
-0.4~0.1
1450×2h