Magnesia Refractory Fire Brick
Ruitai Lianxin magnesia refractory bricks are primarily made of sintered magnesium oxide, with an MgO content typically between 80% – 95%. Their refractoriness can reach approximately 2000℃, enabling them to withstand extremely high temperatures. As a reliable refractory brick supplier, Ruitai Lianxin consistently provides wholesale magnesia refractory bricks and direct factory supply.
Characteristics of Magnesia Fire Brick:
- High fire resistance;
- Excellent resistance to corrosion from iron oxide, alkaline slag, and high-calcium flux.
Magnesia Fire Brick Application
- Steelmaking furnace linings, ferroalloy furnaces, iron smelting furnaces, and non-ferrous metallurgical industrial furnaces;
- Lime kilns in the building materials industry;
- Regenerative mesh heat exchangers for the glass industry;
- Tunnel kilns and high-temperature calcining kilns.
Magnesia Brick
| Physical Property: | LX–SMZ–89 | LX–SMZ–91 | LX–SMZ–93 | LX–SMZ–95 |
| MgO (%) ≥ | 89 | 91 | 93 | 95 |
| SiO2 (%) ≤ | / | / | 3.5 | 2.0 |
| CaO (%) ≤ | 3.0 | 3.0 | 2.0 | 2.0 |
| Apparent Porosity (%) ≤ | 20 | 18 | 18 | 18 |
| Cold Crushing Strength (MPa) ≥ | 50 | 60 | 60 | 60 |
| Refractoriness Under Load (°C) ≥ | 1550 | 1560 | 1620 | 1650 |
| Permanent Linear Change on heating ( 1650℃×2h) (%) | -0.6-0 | -0.5-0 | -0.4-0 | -0.3-0 |
| Thermal conductivity coefficient (1000°C)(W/m.k)≤ | / | 3 | / | 3.8 |
Refractory Magnesia-Alumina Brick
Ruitai Lianxin Refractory Materials Manufacturer produces magnesia-alumina bricks by adding a specific proportion of industrial alumina to a magnesia matrix, which significantly improves the thermal shock resistance of the refractory bricks. Unlike fire magnesia bricks, magnesia-alumina bricks are less prone to spalling or cracking during temperature fluctuations in the furnace.
Features of Refractory Magnesia-Alumina Brick
- Excellent thermal shock resistance;
- Strong resistance to erosion;
- Good volume stability.
Application of Magnesia-Alumina Refractory Bricks
- Top of high temperature furnace;
- Open-hearth furnace and electric copper reverberatory furnace for steelmaking
Magnesia Alumina Brick
| Apparent Porosity(%) | ≤ | 18 | 19 |
| Bulk Density(g/cm3) | ≥ | 2.95 | 2.85 |
| Cold Crushing Strength(MPa) | ≥ | 45 | 40 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1700 | 1650 |
| Thermal Shock Resistance (950℃,Air Cooling)(Cycles) | ≥ | 120 | 100 |
| Thermal Expansion (1000℃) (%) | * | 1.2 | 1.2 |
| Thermal Conductivity (1000℃)(W/m.K) | ≤ | 4 | 3.8 |
| MgO | ≥ | 82 | 78 |
| Al2O3 | ≥ | 10 | 10 |
| SiO2 | ≤ | 1 | 3 |
| Note:All data are average values obtained at samples for laboratory purposes. | |||
Magnesium Aluminum Iron Spinel Bricks
Magnesium aluminum iron spinel bricks, developed by Ruitai Lianxin Refractory Materials Factory, are high-performance refractory fire bricks with magnesium aluminum iron spinel as the main crystalline phase. They have extremely strong slag resistance and are suitable for harsh working environments.
Features of Magnesium Aluminum Iron Tip Refractory Bricks:
- Good thermal shock stability and corrosion resistance;
- Low coefficient of thermal expansion;
- Low thermal conductivity;
- Good structural flexibility.
Application of Magnesium Aluminum Iron Spinel Brick:
- Areas with large temperature fluctuations at the top of various furnaces in the non-ferrous metallurgical industry;
- Bottom of the molten pool, furnace wall and rotary kiln lining
Magnesia-alumina-iron Spinel Brick
| MAFe-82A | MAFe-82B | MAFe-82C | ||
| Physical Property: | ||||
| Bulk Density(g/cm3) | ≥ | 2.95 | 2.92 | 2.90 |
| Cold Crushing Strength(MPa) | ≥ | 65 | 60 | 55 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1650 | 1600 | 1550 |
| Thermal Expansion( 1400℃) (%) | * | 1.4 | 1.3 | 1.2 |
| Apparent porosity | ≤ | 17 | 18 | 19 |
| Thermal Shock Resistance( 950℃,Air)(Cycles) | ≥ | 100 | 100 | 100 |
| Chemical Analysis(%) | ||||
| MgO | ≥ | 82 | 82 | 82 |
| Al2O3 | * | 11-13 | 11-13 | 11-13 |
| Fe2O3 | * | 1.5-3.0 | 1.5-3.0 | 1.5-3.0 |
| SiO2 | ≤ | 1.5 | 2.0 | 2.5 |
| Note:All data are average values obtained at samples for laboratory purposes. | ||||
Magnesium Aluminum Chromium Spinel Bricks
Combining the high-temperature stability of magnesia with the slag-resistant properties of chromite and alumina, we, as a leading manufacturer and supplier of refractory bricks, offer high-quality magnesia-alumina-chromium spinel refractory bricks for wholesale and direct supply.
Features of Magnesia-Alumina-Chrome Spinel Fire Brick:
- Excellent high temperature resistance;
- Ultra-high temperature corrosion resistance
- Good wear resistance
Application of Magnesia-Alumina-Chrome Fire Spinel Brick:
- Zinc kiln and non-ferrous metal smelting furnace top
- High-temperature kiln top in the steel industry.
Magnesia-alumina-chrome Spinel Brick
| LX-MLGe-80 | LX-MLGe-75 | ||
| Physical Property: | |||
| Cold Crushing Strength(MPa) | ≥ | 50 | 40 |
| Refractoriness Under Load(T0.6 ℃) | ≥ | 1680 | 1650 |
| Apparent porosity | ≤ | 18 | 18 |
| Thermal Shock Resistance( 1100℃,water quenching)(Cycles) | ≥ | 10 | 8 |
| Chemical Analysis(%) | |||
| MgO | ≥ | 80 | 75 |
| Al2O3 | * | 9-13 | 9-13 |
| Cr2O3 | * | 3-5 | 3-5 |
| Note:All data are average values obtained at samples for laboratory purposes. | |||
Why choose Ruitai Lianxin Magnesium Series Tiles?
Consistency In Refractory Brick Quality:
As a trustworthy refractory material supplier, Ruitai Lianxin conducts rigorous testing on every batch of refractory bricks before they leave the factory to ensure that they can perform as expected even under extreme high temperatures.
Custom Shapes And Sizes:
In addition to standard refractory bricks, Ruitai Lianxin can also produce custom-shaped and sized refractory bricks according to your kiln drawings.
Standardized Export Packaging And Delivery:
All of Ruitai Lianxin’s exported refractory bricks are securely packaged on sturdy fumigated wooden pallets, wrapped in film, and firmly secured with strapping to ensure safe container transport. With a stable production line, we can ship quickly within 10-20 days and offer expedited production services for urgent custom orders.
Factory Direct Sales Price:
As a premium refractory brick manufacturer, Ruitai Lianxin offers highly competitive refractory bricks wholesale prices. Contact us to get factory-direct prices within 24 hours.
Magnesia series Refractory Brick Prices
The main factors affecting the price of Ruitai Lianxin magnesia series refractory bricks include:Quantity and type.Ruitai Lianxin’s magnesia series refractory bricks are key refractory materials for kiln construction. The Ruitai Lianxin team will provide different pricing plans based on the customer’s specific needs. The price varies depending on the quantity and model of the selected magnesia series bricks. Customers ordering larger quantities of the same model of refractory bricks can enjoy greater discounts.
Ruitai Lianxin Refractory Brick Manufacturing Process
As a high-quality refractory bricks supplier, Ruitai Lianxin refractory brick company has always adhered to strict standardized production processes to ensure that every refractory brick has consistent quality and reliable performance.
Ruitai Lianxin Refractory Brick Customer Case
As one of China’s leading professional refractory material manufacturers, we focus on exporting high-standard refractory bricks and providing factory-direct refractory bricks to industrial clients worldwide. Our products and customized solutions are widely praised globally, and we have stable, long-term partners in many countries, including Uzbekistan, Syria, and Pakistan. Ruitai Lianxin will continue to pursue mutual benefit and win-win results through in-depth cooperation with global refractory brick customers.
Uzbekistan | Magnesium Aluminum Chromium Spinel Brick | Rotary Kiln
Syria | Refractory Cement | Blast Furnace Refractory Materials
Pakistan | Corundum Refractory Fire Brick | Rotary Kiln Lining
Indian | High Alumina Brick | Ladle Refractory Fire Bricks
Egypt | Sintered Zirconia Corundum Brick | Glass Furnace Bricks
Russia | Magnesium Chrome Refractory Brick | Cement Kiln Refractory Bricks
Contact Us
As a professional refractory brick manufacturer, supplier, and factory, we offer high-quality factory-direct refractory bricks and refractory bricks wholesale services, and can customize kiln solutions to meet your needs. Contact us now, and our team will reach out to you as soon as possible to provide you with the best factory quote.