Magnesium Bricks for sale in Rongsheng Kiln Refractory is a kind of alkali refractory with over 90% MgO content and adopts the periclase as the main crystal phase with various properties of high refractoriness and good alkali slag erosion resistance, which is mainly used in basic open hearth furnace for steelmaking and hearth and wall of electric stove.
Description for Magnesium Bricks
Magnesium bricks are the main product of alkali refractory and is fired under the high temperature with high refractoriness and resistance to iron oxides and alkali slag and high calcium flux erosion, which is widely used for metallurgical furnaces.
Classification of Magnesium Bricks
Magnesia refractory has MgO as the main component and periclase as the main crystal phase, which is classified into the following types:
- Common magnesia brick
- Directly combine magnesia brick
- Magnesia silica brick
- Magnesia chrome brick
- Forsterite brick
- Magnesia alumina brick
- Magnesia-calcium brick
Technical Index
| Magnesia Brick | ||||
| Index | Brand | |||
| MZ-89 | MZ-91 | MZ-95 | MZ-97 | |
| MgO % ≥ | 89 | 91 | 94.5 | 96.5 |
| CaO % ≤ | 3 | 2.5 | 2.0 | 1.5 |
| Apparent Porosity % ≤ | 20 | 18 | 17 | 16 |
| Cold Crushing Strength Mpa ≥ | 50 | 60 | 65 | 70 |
| 0.2Mpa Initial Soften Temperature ℃ | 1540 | 1550 | 1620 | 1700 |
| The Volume Density (g/m2) | 2.8 | 2.86 | 2.95 | 3.1 |
| Reheating Linear Change (%) 1650 ℃ 2h | 0.6 | 0.5 | 0.4 | 0.4 |
| Reference Standard | GB2275-87 | |||
Performance of Magnesium Bricks
- With higher refractoriness
- Good resistance to alkali slag erosion
- High initial refractoriness under load
Application of Magnesium Bricks
Magnesium Brick can be used in the high heat furnace and stove for resistance to alkali erosion, such as:
- Basic open hearth furnace for steelmaking
- Hearth and wall of electric stove
- Permanent lining of oxygen converter
- Non-ferrous smelting furnace
- High-temperature tunnel kiln
- Lining of rotary cement kiln
- Hearth and wall of heating furnace
- Checker brick for regenerative chamber of glass melting furnace
Manufacturing Process
Burnt magnesite brick is made from raw material of periclase, after fired with 1550~1600℃ high temperature through crushing, mixing, melting and molding. High purity products have over 1750℃ burnt temperature. Unburnt magnesite brick is made of adding suitable chemical agent through melting, molding and drying.
Rongsheng can provide customers with high quality magnesia refractory bricks at your lower cost. If you have special requirements for magnesia bricks’ shape and sizes, Rongsheng has professional technology to meet you. We also have professional engineers to give you suitable suggestion on application of magnesium fire brick.
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