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Fused Magnesia | High Purity Fused Magnesia for Refractory & Industrial Applications
Product Overview
Fused magnesia, also known as fused magnesium oxide, is a high-purity, high-performance refractory raw material produced by melting high-grade magnesite or light-burned magnesia in ultra-high temperature electric arc furnaces above 2700°C. Through high-temperature fusion, crystallization, cooling, crushing and screening processes, the final product features dense crystal structure, extremely low porosity, excellent chemical stability and superior high-temperature mechanical properties. As one of the most essential advanced refractory materials, fused magnesia is widely recognized for its outstanding resistance to high temperature, corrosion, thermal shock and abrasion, serving as a core raw material for high-end refractory products and industrial high-temperature equipment manufacturing.
Different from ordinary sintered magnesia, fused magnesia forms complete and large magnesium oxide crystals after electro-fusion treatment. Its internal structure is tighter and more stable, with fewer internal defects. It can withstand long-term extreme high-temperature operating environments and resist erosion from molten steel, slag and high-temperature flue gas, which makes it irreplaceable in high-temperature industrial fields with harsh working conditions.
Key Product Features
Ultra-high Temperature Resistance: Fused magnesia boasts a melting point as high as 2800°C, with excellent structural stability under continuous ultra-high temperature operation. It will not soften, deform or collapse in long-term high-temperature environments, fully meeting the high-standard temperature resistance requirements of industrial furnaces and metallurgical equipment.
Dense Crystal Structure & Low Porosity: The high-temperature electro-fusion process creates uniform and dense crystal grains with extremely low internal voids. This unique structure greatly improves the product’s bulk density and structural firmness, effectively resisting high-speed flue gas scouring and mechanical abrasion.
Excellent Slag & Molten Metal Corrosion Resistance: It features stable chemical inertness at high temperatures, strong resistance to erosion and penetration of various metallurgical slags, molten steel and molten iron. It can effectively avoid lining damage caused by chemical corrosion and extend the service life of refractory linings.
Superior Thermal Shock Resistance: Fused magnesia has reasonable thermal expansion performance and strong structural toughness. It can adapt to frequent temperature rise and fall, effectively resisting thermal shock cracking and peeling, ensuring stable operation of equipment under intermittent working conditions.
Stable Physical & Chemical Properties: The finished product has high purity, low impurity content, stable quality and excellent weather resistance. It will not produce chemical deterioration or structural changes in complex high-temperature and high-pressure environments, ensuring long-term stable performance.
Common Product Grades & Specifications
We supply a complete range of fused magnesia products with customizable purity and particle size specifications to meet diverse industrial needs. The mainstream grades include high-purity fused magnesia, ordinary fused magnesia and large-crystal fused magnesia. The magnesium oxide content ranges from 95% to 99%, covering various particle sizes from coarse granules to fine powder. All products adopt strict grading and screening processes to ensure uniform particle size and stable batch quality, which can perfectly match the production requirements of different refractory products.
Wide Application Fields
Fused magnesia is a versatile industrial raw material, mainly applied in high-end refractory manufacturing and precision industrial fields:
Refractory Industry: It is the core raw material for producing magnesium carbon bricks, magnesia refractory castables, magnesia-alumina spinel bricks and other high-grade refractory products. Widely used in the lining of steelmaking converters, electric furnaces, ladles, tundishes and other metallurgical equipment.
Metallurgical Industry: Applied in high-temperature lining protection of iron and steel smelting, non-ferrous metal smelting furnaces, resisting molten metal and slag erosion to ensure continuous and efficient production.
High-temperature Industrial Furnaces: Suitable for industrial kilns, heating furnaces, ceramic furnaces and other high-temperature equipment linings, providing reliable high-temperature insulation and anti-corrosion protection.
Other Industrial Fields: It can also be used in the production of electrical insulating materials, high-temperature ceramic materials, abrasive materials and other high-end industrial products, with wide industrial applicability.
Our Product Advantages
Our fused magnesia adopts high-quality raw materials and advanced electric fusion production technology, with strict quality inspection from raw material selection, high-temperature melting, crystallization molding to finished product screening. Compared with peer products, our fused magnesia has higher purity, denser crystal structure, more stable performance and lower impurity content.
We support customized specifications and bulk stable supply, and can provide targeted product solutions according to customers’ production processes and usage scenarios. With professional technical support and perfect after-sales service, we help customers reduce production costs, improve product quality and create greater industrial value.
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