High Alumina Refractory Ball
Hot blast stove refractory ball is made of bauxite,industrial alumina,mullite ,corundum,zirconia corundum,chrome corundum,cordierite,magnesia etc and other refractory raw materials, and processed by international nanotechnologies and advanced ceramic crafts and sintered under high temperature with mechanical frictional pressure moulding and isostatic compaction.
Technical data sheet
|
Item |
High alumina |
Low creep |
Mullite |
Corundum |
|
Size (mm) |
40-80 |
40-80 |
40-80 |
40-80 |
|
AL2O3 (%) |
65 |
70 |
75 |
95 |
|
Refractoriness under load (°C) |
1450 |
1460 |
1530 |
1650 |
|
Apparent Porosity (%) |
25 |
23 |
22 |
18 |
|
Bulk Density (g/cm3) |
2.3 |
2.4 |
2.5 |
3.1 |
|
Cold crushing strength (Mpa) |
13 |
14 |
32 |
36 |
|
Thermal shock resistance (1100°Cwater cooling) cycle |
≥15 |
≥10 |
≥20 |
≥7 |
|
Refractoriness(°C) |
1710 |
1750 |
1800 |
1800 |
Features
1.Large volume density,
2.High refractoriness under load,
3.Low creep rate, and
4.Good resistance to erosion,hydration,chalking and stripping.
5.Relatively good thermal shock resistance,
6.Easy operation,convenient replacement and recycling usage.
Application
Refractory ball is specially used for hot blast stove of iron steel industry.
