It is produced by foam coagulation technique.
Features:
1. It has advantages with small bulk density, high cold crushing strength, and high refractoriness under load, small dimension tolerance and good thermal shock resistance.
2. It has the lowest and most stable thermal conductivity in various insulating refractory bricks.
3. It can reduce the total weight of furnace body and the thickness of furnace wall effectively, improve heat efficiency, lower energy consumption, improve work conditions and production efficiency, and considerable economic benefit can be obtained.
Application:
It is not only widely used in insulating layers of various of thermal processing equipments, such as hot blast furnace, coke oven, glass kiln, etc, but also apply to linings in parts of furnace without strong high-temperature molten material erosive.
Item High Alumina Insulating
LG-1.0 LG-0.9 LG-0.8 LG-0.7 LG-0.6 LG-0.5 LG-0.4
Al2O3 % 48
Fe2O3 % 2.0
Bulk Density g/cm3 1.0 0.9 0.8 0.7 0.6 0.5 0.4
Cold Crushing Strength Mpa 3.92 3.43 2.94 2.45 1.96 1.47 0.78
Thermal Conductivity Coefficient w/m.k 0.45 0.45 0.35 0.35 0.3 0.25 0.20
Test Temperature of Permanent Linear Change Rate 2% C 1400 1400 1400 1350 1350 1250 1250
Advantages:
â?¢CUNSE has its own crystalline silica mine in Tie men Town which is famous for its silica mine.
â?¢High purity, good thermal conductivity, high refractoriness under load and high tridymite content, low true density, low expansion, low creep and low residual quartz content, good dimension and appearance.
Areas of Application:
â?¢Widely used in hot blast stoves.
â?¢Used in high temperature sections of the checker chamber in hot blast stoves.
â?¢Used as low-cost alternative to andalusite and mullite checker bricks in hot blast stoves.
â?¢High refractoriness, average thermal shock resistance makes it suitable in consistent temperature environment.
Physical and Chemical Properties:
â?¢Mineralize â?¢Silica content exceeds 95% â?¢Refractoriness up to 1710â??
Cunse silica brick for glass kiln has the characteristics of high purity, high density, high strength and high soft, high refractoriness.
It also has the ability of resistance to acidic and alkalic steam attack with high performance of flushing resistance.
