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The main products are contents:mullite light-weight brick，high-temperature bonder and indeterminate from fireproofing material etc.
classification
Application
Thermal insulation material of various industrial furnaces. such as wall and furnace top material of ceramic tunnel furnace, roller kiln, steel ladle in steel industry and lining thermal insulation material of airheater.
Feature
Manufactured by high quality raw material and special process, it is of high compression strength, uniform structure, low heat capacity, light weight, low cost and remarkable energy conservation effect.
Physical and chemical indicators
| Name of commodity
Performance and index |
clay based | High alumina based | |||||||||
| NG 0.6 | NG 0.8 | NG 0.9 | NG 1.0 | NG 1.2 | LG 0.6 | LG 0.8 | LG 0.9 | LG 1.0 | LG 1.2 | ||
| Bulk density g／cm3 | 0.6 | 0.8 | 0.9 | 1.0 | 1.2 | 0.6 | 0.8 | 0.9 | 1.0 | 1.2 | |
Compressive strength at ambient temp Mpa |
1.5 | 2.5 | 2.5 | 3.0 | 3.5 | 2.0 | 3.0 | 3.5 | 4.0 | 4.5 | |
| Linear change on reheating ℃×hr %≤ | 1200×4 2 | 1300×4 2 | 1350×4 2 | 1400×4 2 | 1400×4 2 | 1350×4 1.5 | 1400×4 1.5 | 1400×4 1.5 | 1400×4 1.5 | 1450×4 1.5 | |
| AL2O3 %≥ | 37 | 40 | 40 | 42 | 42 | 50 | 50 | 52 | 52 | 55 | |
| SiO2% | 59 | 56 | 56 | 54 | 54 | 46 | 46 | 44 | 44 | 41 | |
| Fe2O3 %≤ | 3.0 | 2.5 | 2.5 | 2.5 | 2.5 | 1.8 | 1.8 | 1.5 | 1.5 | 1.5 | |
| Heat conductivity w/m.k | 0.25 | 0.35 | 0.4 | 0.5 | 0.6 | 0.25 | 0.3 | 0.35 | 0.45 | 0.55 | |
| Highest use temp ℃ | 1150 | 1200 | 1250 | 1300 | 1300 | 1250 | 1280 | 1280 | 1300 | 1350 | |