Introduction
The main crystal phase of magnesia bricks is periclase. The MgO content in burned magnesia bricks typically ranges from 89% to 98%. Magnesia bricks are categorized into burned and unburned types. Burned magnesia bricks, made from sintered magnesite, are known as sintered magnesia bricks, while those made from fused magnesite are called fused magnesia bricks. Unburned magnesia bricks are further divided into chemically bonded and asphalt-bonded types.
Main components: High-purity magnesium oxide (MgO, content ≥95%) is used as the primary raw material, processed through sintering or chemical bonding.
Mineral phase: The main crystalline phase is magnesite (MgO), with some products containing a small amount of silicate phase (such as Mg₂SiO₄).
Characteristics: Alkaline refractory with strong resistance to both alkaline and acidic slag erosion.
Advantage
High Refractoriness: Typically above 2000°C, allowing stable operation in high-temperature environments such as steel smelting, glass melting, and other industries. It withstands extreme thermal cycles and thermal shock.
Higher Load Softening Temperature: Maintains structural stability and resists softening or deformation under high-temperature loads, ensuring the reliable operation of furnaces and thermal equipment.
Alkaline Slag Resistance: Excellent resistance to alkaline slags (e.g., slags containing iron oxide, calcium oxide), effectively preventing erosion and extending furnace lining life in steelmaking and non-ferrous metal smelting.
Resistance to Chemical Erosion:Demonstrates good resistance to corrosion by various acids, alkalis, and solvents, making it suitable for chemically aggressive environments.
Higher Strength: Offers high compressive strength at room temperature and excellent mechanical strength at high temperatures, allowing it to endure pressure and impact from furnace materials and components.
Good Volume Stability: With a relatively low coefficient of thermal expansion, it maintains dimensional stability during temperature fluctuations, reducing structural damage from thermal expansion and contraction.
Good Thermal Conductivity:Efficient heat conduction makes it suitable for applications requiring heat dissipation or heat transfer, such as certain heat exchange equipment.
Zinfon Refractory Technology Co.,Ltd.
We provide one-stop services from technical consultation to design, production, and after-sales support.
Raw Materials
magnesium oxide(mainly)
Physical and Chemical Specifications
| Grade / Specifications | Chemical Composition (%) | Apparent Porosity (%) | Bulk Density (g/cm3) | Cold Crushing Strength (MPa) | Refractoriness under Load ºC @0.2MPa | |||
| MgO % | CaO % | SiO2 % | ||||||
| Regular Magnesia Bricks | YXMZ-89 | 89 | - | 2.5 | 18 | 2.9 | 50 | 1480 |
| YXMZ-90 | 90 | - | 2.5 | 18 | 2.9 | 50 | 1520 | |
| YXMZ-92 | 92 | 3 | 2 | 18 | 2.92 | 50 | 1550 | |
| YXMZ-93 | 93 | 2.5 | 2 | 18 | 2.92 | 50 | 1560 | |
| High Purity Magnesia Bricks | YXMZ-94A | 94 | 2 | 2 | 18 | 2.95 | 50 | 1620 |
| YXMZ-94B | 94 | 2 | 2 | 18 | 2.95 | 50 | 1620 | |
| YXMZ-95 | 95 | 2 | 2 | 18 | 2.95 | 50 | 1650 | |
| YXMZ-96 | 96 | 1 | 2 | 18 | 2.96 | 50 | 1680 | |
| YXMZ-98-1 | 97 | 0.8 | 0.6 | 16 | 3 | 60 | 1700 | |
| YXMZ-98-2 | 95 | 0.8 | 2 | 16 | 3 | 60 | 1700 | |
| YXMZ-97 | 97 | 0.8 | 1 | 17 | 2.98 | 60 | 1700 | |
categorize
process
Raw material treatment → molding → drying → sintering/curing → post-processing → finished products
application
Magnesia refractory bricks, being alkaline refractories with magnesium oxide (MgO) as the primary component, are widely used due to their high-temperature resistance and excellent resistance to alkaline slag erosion.
Steelmaking:Used for linings in electric arc furnaces, ladle furnaces, and converters. For example, in electric arc furnace walls, furnace bottoms, covers, and converter slag lines, these bricks resist high temperatures and slag erosion, extending equipment life. They are also applied in refining furnaces and iron ladles to enhance durability and efficiency.
Non-ferrous Metal Smelting:In processes such as copper and tin smelting, magnesia bricks withstand high temperatures and harsh conditions. The bottom of tin smelting furnaces, for instance, often uses these bricks for their resistance to alkaline melts and iron-rich corrosion.
Cement Industry:Used in cement rotary kiln linings to provide thermal insulation and chemical erosion resistance.
Glass Industry: Applied in glass kilns to maintain stable working temperatures and avoid contamination of molten glass.
Photo-thermal Power Generation: Utilized in solar concentrators, reflectors, and key components requiring high thermal stability and conductivity. These bricks help maintain the structural integrity of concentrators and improve heat transfer efficiency.
Wind Power Generation: Used in combustion chambers, heat exchangers, and exhaust ducts of wind turbines, where they help manage high-temperature gases, maintain system temperature, and enhance energy efficiency.
Hydrogen Industry:Applied in high-temperature reactors for steam and methane reforming. Magnesia bricks provide stability, corrosion resistance, and thermal conductivity to ensure reactor performance and efficiency.
Biomass Energy: Installed in biomass combustion boiler hearths and gasification reactors to resist the impact of high-temperature combustion gases and corrosive agents, ensuring stable equipment operation.
Additionally, magnesia refractory bricks are used in high-temperature industrial equipment such as waste incinerators, industrial boilers, and power plants. They are also suitable for use in solid heat storage systems, where magnesia bricks serve as heat storage media to retain and release thermal energy efficiently.
Why chooes us?
01/Customized dimensions and shapes
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Customized Brick Shape
Provide Sample Sheets--Mold Opening & Quotation--Mold Opening & Sample Making--Bulk Production Quotation--Contract Signing--Bulk Production
02/Delivery cycle and logistics
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Sea freight, land freight. Determine the mode of transportation according to the needs
About 30 days, customized products delivery time depends on the actual situation.
03/Customized packaging
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Customize your brand
Logo customization, custom fonts, taglines and messages for packaging, signage, websites or printed materials.
Take your brand to the next level, contact us today to discuss your project!
04/Purchase ZINFON refractory Bricks at Reasonable Prices
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The price of refractory bricks is a known key factor influencing customers' purchasing decisions. Therefore, we offer affordable refractory bricks for sale. Here are several reasons why ZINFON provides refractory bricks at competitive prices:
Factory price
By collaborating with ZINFON, we ensure that customers enjoy the ex-factory price of refractory bricks, reducing costs from middlemen or distributors. This allows customers to obtain the most cost-effective pricing directly from the source.
Low raw material cost
ZINFON is surrounded by abundant mineral resources. With these high-quality materials, customers can obtain products that are both affordable and excellent in performance.
Mass production
ZINFON possesses advanced production equipment and technologies, enabling the factory to achieve economies of scale and reduce unit production costs. Meanwhile, it ensures a continuous supply of high-quality products at preferential prices.
It is worth noting that while price is an important factor, it should not be the sole determinant of your purchasing decision. When buying refractory bricks from ZINFON, quality, reliability, and technical support are equally important considerations.
By choosing ZINFON as your supplier, you can access high-quality refractory bricks, a wide range of other refractory materials, and comprehensive support. Contact ZINFON Refractories immediately to discuss your specific requirements and obtain customized solutions!
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Provide professional after-sales protection
Our address
Qinghua Management Dist., Dashiqiao City, Yingkou City, Liaoning, China
Phone Number
+8613700131695
+8618540210631
info@zinfon-refractory.com
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