Silica Bricks For Hot Blast Stove
- Apparent Porosity:22
- True Density:2.32
- Cold Crush Strength:45
- Refractoriness Under Load:1650
Description
Description：
Silica brick is a type of acid refractory. Due to its advantages such as good volume stability and good creep resistance, it is used in the high-temperature parts of hot blast stove.
Silica brick used in hot blast stove mainly consists of tridymite. It has the following features:
1)Good volume stability and creep resistance at high temperature under load - it can be continuously used for one or two campaigns.
2)Good thermal shock resistance above 600℃ - it can be well adapted to the variability of the temperature and maintain the integrity of bricks and masonry.
3)Better corrosion resistance than fire clay brick and common high alumina brick - the alkali substances in the coal gas and smoke can form a layer of glass phase on the surface of silica brick and prevent further corrosion.
4)Higher thermal conductivity than fire clay brick and high alumina brick - this is conducive to store and release heat in a shorter time.
Application:
The silica brick refractories are used high-temperature load-bearing parts of the hot blast stove and acid open-hearth roof.
Silica brick is a type of acid refractory. Due to its advantages such as good volume stability and good creep resistance, it is used in the high-temperature parts of hot blast stove.
Silica brick used in hot blast stove mainly consists of tridymite. It has the following features:
1)Good volume stability and creep resistance at high temperature under load - it can be continuously used for one or two campaigns.
2)Good thermal shock resistance above 600℃ - it can be well adapted to the variability of the temperature and maintain the integrity of bricks and masonry.
3)Better corrosion resistance than fire clay brick and common high alumina brick - the alkali substances in the coal gas and smoke can form a layer of glass phase on the surface of silica brick and prevent further corrosion.
4)Higher thermal conductivity than fire clay brick and high alumina brick - this is conducive to store and release heat in a shorter time.
Application:
The silica brick refractories are used high-temperature load-bearing parts of the hot blast stove and acid open-hearth roof.
Specification
| Silica Bricks For Hot Blast Stove | RT-RG-95 | |
| Chemical Composition (%) | SiO2 ≥ | 95 |
| Al2O3 ≤ | 1.0 | |
| Fe2O3 ≤ | 1.3 | |
| Apparent Porosity (%) ≤ | 22(24) | |
| True Density (g/cm3) ≤ | 2.32 | |
| Cold Crush Strength (MPa) ≥ | 45(35) | |
| Residual Quartz (%) ≤ | 1.0 | |
| Refractoriness Under Load (T0.6, ℃) ≥ | 1650 | |
| Creep Rate (0.2MPa x 1550℃x50h) (%) ≤ | 0.8 | |
| Thermal Expansion (1000℃)(%) ≤ | 1.25 | |