Product Introduction
Corundum brick, Whose Alumina content is greater than 90%, are the hot selling which regard the corundum as the main crystalline phase. High normal temperature compressive strength (up to 340MPa). High load softening onset temperature (greater than 1700°C). Good chemical stability, strong resistance to acidic or alkaline slag, metal and glass. Thermal shock stability is related to its organizational structure. Dense products have good corrosion resistance but poor thermal shock stability. Divided into sintered corundum bricks and fused corundum bricks. Sintered alumina and fused corundum can be used as raw materials or alumina clinker with high ratio of Al2O3/SiO2 and sintered alumina respectively. Can also be made of phosphoric acid or other binders do not burn corundum brick.
Technical Data
| RongSheng Corundum brick | RS-G93 | RS-G98 |
| Al2O3 | ≥93 | ≥98 |
| SiO2 | ≤5.0 | ≤0.2 |
| Fe2O3 | ≤0.1 | ≤0.1 |
| CaO | ≤1.2 | ≤1.2 |
| Na2O | – | – |
| ZrO2 | – | – |
| Cr2O3 | – | – |
| Apparent Porosity % | ≤17 | ≤17 |
| Bulk density（g/cm3） | ≥3.15 | ≥3.2 |
| Cold Crushing Strength Mpa | ≥100 | ≥100 |
| High temperature flexural strength（1250℃ Mpa） | ≥9.5 | ≥9.5 |
| Refractoriness（℃） | ≥1900 | ≥1850 |
| Load softening temperature（0.2Mpa T0.6 ℃） | ≥1700 | ≥1680 |
| Burning line rate of change（1600℃×3h ％） | ≤±0.2 | ≤±0.2 |
Application
1. Iron and steel industry: used as lining materials for high-temperature smelting equipment such as converters, electric furnaces, and refining furnaces.
2. As well as components such as slide plates, stoppers, and pouring systems for continuous casting.
3. Nonferrous metal smelting: used for linings of smelting furnaces and refining furnaces for nonferrous metals such as aluminum, copper, and nickel.
4. Glass industry: used for regenerator checker bricks and feeder bricks in glass melting furnaces.
5. Cement industry: used for linings of high-temperature firing zones in cement rotary kilns.
6. Chemical industry: used for linings of high-temperature reactors and cracking furnaces.
7. Ceramic and refractory industry: used for linings of high-temperature kilns, such as ceramic kilns, tunnel kilns, etc.
8. Energy industry: used for linings of high-temperature exhaust gas treatment equipment and gasifiers.