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Applications of Magnesium Oxide in Industry BY:Cynthia
time2025/09/03
- Magnesium oxide (MgO) is a white inorganic compound known for its high melting point, excellent thermal stability
Applications of Magnesium Oxide in Industry
1. Introduction
Magnesium oxide (MgO) is a white inorganic compound known for its high melting point, excellent thermal stability, strong chemical resistance, and superior electrical insulation. With these outstanding properties, magnesium oxide plays a vital role in modern industry and is widely used in metallurgy, construction materials, chemical engineering, environmental protection, agriculture, and pharmaceuticals.
2. Metallurgical Applications – A Core High-Temperature Material
In the metallurgical industry, magnesium oxide is one of the most widely used and essential materials.
Refractory Materials: MgO is a key raw material for producing magnesia bricks, magnesia-carbon bricks, and other high-grade refractory products. These are extensively used as linings in steel furnaces, electric arc furnaces, cement kilns, and glass furnaces due to their exceptional resistance to heat and corrosion.
Flux and Desulfurizer: Magnesium oxide effectively removes sulfur and impurities from molten steel, improving its purity and mechanical properties.
Sintered and Fused Magnesia: Produced by calcining magnesite at high temperatures, sintered or fused magnesia can withstand temperatures up to 2800°C, making it ideal for high-temperature industrial environments.
3. Construction Industry – Building Greener, Stronger Materials
Magnesium oxide is becoming increasingly important in the building materials sector:
Magnesia Cement (Sorel Cement): Formed by reacting magnesium oxide with magnesium chloride and water, this cement type offers high strength, fire resistance, and moisture resistance. It is widely used for flooring, partition walls, and fire doors.
Magnesia Boards: New eco-friendly boards made from magnesium oxide reinforced with glass fibers or plant fibers are resistant to fire, water, and mold—making them an excellent alternative to traditional gypsum boards.
4. Chemical and Environmental Applications – Supporting Sustainability
Magnesium oxide serves various roles in the chemical and environmental protection industries:
Catalyst and Adsorbent: Due to its alkaline surface and large specific surface area, MgO can act as a catalyst or carrier in reactions such as hydrogenation, dechlorination, and alcohol synthesis.
Flue Gas Desulfurization and Wastewater Treatment: MgO neutralizes acidic gases and wastewater, converting them into magnesium sulfate or precipitates for resource recovery.
Eco-Friendly Material Production: It is also used in manufacturing flame retardants, adsorbents, and environmentally friendly composite materials.
5. Agriculture and Animal Husbandry – Enhancing Soil and Animal Health
Soil Conditioner: Magnesium oxide helps neutralize acidic soils, improve soil structure, and enhance nutrient absorption by crops.
Feed Additive: As a magnesium supplement, MgO prevents magnesium deficiency in livestock, promotes bone development, and improves overall animal health.
6. Future Outlook
With the advancement of new materials and energy technologies, magnesium oxide is finding increasing applications in energy storage, battery separators, high-performance ceramics, and eco-friendly composites. Its potential in emerging industries continues to grow rapidly.
CNMGO Group has a deep understanding of the diverse needs of different customers. Our Magnesium Sulphate products, including some high-quality Caustic Calcined Magnesite and Dead Burned Magnesia for related industrial chains, are derived from a strict quality control system. This ensures that every batch meets high standards for purity, solubility, and safety, helping customers maximize their production potential and economic benefits.
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