| · Introduction |
Characteristics：Alumina bubble bricks use the hollow alumina sphere(bubble alumina), corundum powder, calcined powder as raw material, and are made through Homogenization, molding, high temperature sintering. High temperature resistance, low thermal conductivity, good thermal insulation, good chemical stability (acid-base erosion resistance), low bulk density (lighter than the same kind of material, thin kiln wall, low cost).
Application：Widely used in inner linings of various non-contacted melt high temperature kiln and thermal insulating layers of high temperature kilns.
| · Physical and chemical indicators |
|
Name |
MLQ84 |
MLQ90 |
LQ-1.2 |
LQ-1.5 |
LQ-1.7 |
LQ-2.0 |
|
Al2O3%≥ |
84 |
90 |
98.5 |
98.5 |
98.5 |
98.5 |
|
Fe2O3%≤ |
0.8 |
0.5 |
0.3 |
0.3 |
0.3 |
0.3 |
|
SiO2%≤ |
15 |
9 |
1.0 |
1.0 |
1.0 |
1.0 |
|
Bulk Density g/cm3≤ |
1.5 |
1.5 |
1.2 |
1.5 |
1.7 |
2 |
|
Compressive Strength at Normal Temperature MPa≥ |
16 |
15 |
13 |
12 |
15 |
20-25 |
|
Porosity %≥ |
58 |
60 |
62 |
60 |
58 |
52 |
|
Soften Point at 0.1MPa Load ℃ 0.1MPa≥ |
1650 |
1700 |
1700 |
1700 |
1700 |
1700 |
|
Refractoriness ℃≥ |
1800 |
1800 |
1800 |
1800 |
1800 |
1800 |
|
Thermal Conductivity W/m·K(1000℃)≤ |
1.2 |
1.15 |
0.95 |
1.05 |
1.15 |
1.2 |
Shi 13355226066 Li 18953381071
rockliyan0506@126.com
Wangcun County, Zhoucun District, Zibo City, Shandong Province, China.
