Magnesite Brick, also known as Magnesia Brick or MgO Brick, is one of the most widely used basic refractory products in high-temperature industrial furnaces. With excellent refractoriness, strong resistance to alkaline slag, good thermal stability, and outstanding mechanical strength, magnesite bricks are essential materials in steelmaking, non-ferrous metals, cement, glass, and various thermal processing industries.
Highland Refractory, established in 1990, specializes in manufacturing high-quality magnesite bricks using advanced production technology and strict quality-control systems. With strong R&D capability and decades of export experience, we provide customized magnesia brick solutions to global furnace users seeking long service life and stable performance.
Highland Refractory aims to maximize your furnace availability and reduce total operating cost by providing bricks with long service life, stable performance, and reliable thermal resistance.
High refractoriness (＞1750°C)
Strong resistance to alkaline slag and metal penetration
Excellent thermal shock resistance and spalling resistance
High bulk density & cold crushing strength
Low porosity for improved corrosion resistance
Customized sizes, shapes, formulations available
Fast delivery, global logistics, complete documentation for import
Every batch of MgO bricks is produced using premium-grade fused or sintered magnesia and fired at extremely high temperatures to ensure chemical stability, high purity, and structural integrity.
Our magnesite bricks maintain structural stability even in harsh thermal cycles and high mechanical load environments.
Special formulas using high-purity magnesia ensure excellent corrosion resistance against basic slag and aggressive furnace atmospheres.
High cold crushing strength (CCS) provides superior load-bearing performance, ensuring long-term stable lining structure.
Optimized mineral phases such as periclase and spinel significantly improve thermal cycling performance and prevent premature spalling.
Below are the most commonly used types, each designed for different furnace zones and operating conditions.
Made from high-purity magnesite and fired at high temperature, this is the most widely used type.
Key Advantages:
High refractoriness
Strong basic slag resistance
Good thermal stability
Applications:
Permanent lining of Electric Arc Furnace (EAF)
Steel converters
Glass tank regenerators
Lime kilns
Non-ferrous furnaces
Produced using fused magnesia, pressed under high pressure, and fired at ultra-high temperature.
Key Advantages:
High bulk density
Extreme corrosion resistance
Excellent hydration resistance
Applications:
Converter tapping holes
Slag lines of non-ferrous furnaces
Glass tank regenerators
High-wear furnace areas
Manufactured from high-quality magnesia and alumina bauxite with a balanced mineral structure.
Key Advantages:
Good thermal shock resistance
Strong alkali slag resistance
High RUL (Refractoriness Under Load)
Applications:
Steel ladles
Lining of steel furnaces
Iron mixers
General high-temperature industrial kilns
Produced from magnesia and synthetic spinel, suitable for areas with strong temperature fluctuation.
Key Advantages:
Environmental friendly
Excellent spalling resistance
Enhanced thermal shock performance
Applications:
Transition zones in cement rotary kilns
Glass tank regenerators
Lime kilns
Made from sintered magnesia and chrome ore; fired at high temperature.
Key Advantages:
Good thermal resistance
Higher bulk density than standard MgO brick
Applications:
Cement kilns
Glass kiln regenerators
Steel furnace permanent lining
Produced using high-purity magnesia and low-impurity chrome ore, fired above 1700°C.
Key Advantages:
High slag corrosion resistance
Excellent high-temperature performance
Applications:
Cement rotary kilns
EAF furnace roofs and sidewalls
Non-ferrous smelting furnaces
Made using synthetic fused magnesia-chrome clinker, pressed and fired at ultra-high temperature.
Key Advantages:
High thermal resistance
Low permeability
Best-in-class corrosion resistance
Applications:
AOD furnaces
RH vacuum refining furnaces
High-temperature slag lines
Combines the thermal shock resistance of direct-bonded bricks and the corrosion resistance of fused rebonded bricks.
Applications:
Same as rebonded types
Specially suitable for areas with both thermal shock and chemical attack
Made from magnesia and dolomite clinker with excellent basicity balance.
Key Advantages:
Good anti-spalling behavior
Helps purify steel (removal of S & P)
Suitable for alternative to magnesia-chrome in cement kilns
Applications:
AOD and VOD refining furnaces
Ladle linings
Cement rotary kiln burning zone
Highland Refractory follows strict ISO 9001 quality management, ensuring:
Raw materials checked for purity, grain size, and density
Precise control of firing temperature
Dimensional checks for every batch
Physical and chemical tests (CCS, RUL, porosity, thermal shock, phase analysis)
Optional third-party inspection (SGS / BV / CIQ)
All products are guaranteed to be free from cracks, structural defects, and impurities. Custom shapes, technical drawings, and tailored formulations are available.
We ensure safe and reliable global transportation:
Strong fumigation-free wooden pallets
Moisture-proof packaging
Corner protection & shrink-wrap film
Delivery by sea, land, or rail
Complete export documents (CO, FORM E, MSDS, packing list, invoice)
Highland Refractory supports door-to-port, door-to-door, and DDP delivery options for customers worldwide.
Over 30 years of refractory manufacturing experience
Strong R&D and customization capability
Long service life, stable quality, competitive pricing
Fast production & stable supply capacity
Professional technical support for furnace selection
Our mission is to help customers reduce consumption, extend furnace life, and increase profitability.
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