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Magnesia Alumina Spinel Bricks
Brand: HongTai Refractory
Category: Magnesia Brick
MgO: 82-88%
Al2O3: 6-9%
Bulk Density: 2.8-2.9g/cm3
Payment Terms: T/T, Credit Cardse, E-Checking, Alibaba Trade Assurance
Product Information
Magnesia alumina spinel bricks, also known as MgO-Al2O3 spinel bricks, are a type of high-performance refractory material made primarily from magnesia (MgO) and alumina (Al2O3), with spinel (MgAl2O4) as the main crystalline phase.
They exhibit excellent properties, such as high refractoriness, good thermal shock resistance, strong resistance to alkali and basic slag corrosion, and resistance to abrasion and spalling. As a result, they are suitable for use in various high-temperature applications, particularly in the steel and cement industries.
| Iterms | SH-1 | SH-2 | SH-3 | SH-4 |
| МgО％, ≥ | 88 | 86 | 84 | 82 |
| Аl2О3％, ≥ | 6 | 9 | 9 | 8 |
| SiО2％, ≥ | 0,5 | 0,5 | 0,8 | 1,0 |
| Bulk density, g/cm3 | 2.9 | 2.9 | 2.85 | 2.8 |
| Open porosity,%, ≤ | 18 | 18 | 19 | 20 |
| Compressive strength, N/mm², ≥ | 60 | 60 | 50 | 45 |
| Softening onset temperature, ℃, ≥ | 1700 | 1700 | 1680 | 1650 |
| Thermal resistance, ≥, times | 10 | 10 | 10 | 10 |
| Thermal conductivity, 1000℃, W/m K | 2.9 | 2.9 | 2.8 | 2.7 |
- High temperature resistance
- Good thermal shock resistance
- Low thermal expansion
- Resistance to slag and metal penetration
- High strength and abrasion resistance
- Resistance to alkaline environments
| Industry/Application | Usage |
|---|---|
| Steel Industry | Steel-making electric arc furnaces, converters, and ladles |
| Cement Industry | Transition and burning zones of rotary cement kilns |
| Non-Ferrous Metallurgy | Copper smelting furnaces, nickel smelting furnaces, and aluminum reduction cells |
| Glass Industry | Regenerator checker bricks for glass melting furnaces |
| Refractory Industry | High-temperature masonry and repair of various industrial furnaces |
