Finest Mineral


Malli Minerals International is a professionally managed enterprise actively engaged in the supplying of Magnesia Minerals to global market.

Magnesia, also known as magnesium oxide (MgO), is a versatile mineral recognized for its remarkable refractory properties and wide-ranging industrial applications. Derived from magnesite ore through calcination processes, magnesia serves as a critical component in refractory materials used for high-temperature applications like steelmaking and glass manufacturing. Its exceptional heat resistance, electrical insulating properties, and chemical stability also make it valuable in industries such as ceramics, construction, and environmental applications. Magnesia plays a pivotal role in enhancing the durability and performance of materials and processes in demanding industrial settings.

Typical applications include

  • Refractories: Magnesia is a key component in refractory materials used to line high-temperature industrial furnaces, kilns, and converters in industries such as steelmaking, glass manufacturing, and cement production.
  • Steel Industry: In steelmaking, magnesia-based refractories are used to line the basic oxygen converters and electric arc furnaces, where they withstand extreme temperatures and corrosive environments.
  • Glass Manufacturing: Magnesia is used to produce high-quality refractory bricks and materials for lining glass melting furnaces, ensuring consistent and efficient glass production.
  • Ceramics: It is used as a refractory and insulating material in the production of ceramics, including kiln furniture and insulating bricks for the ceramic industry.
  • Environmental Applications: Magnesia is used in environmental applications, such as flue gas desulfurization (FGD) systems in power plants, where it reacts with sulfur dioxide to reduce emissions.
  • Agriculture: Magnesia is used as a soil conditioner to correct magnesium deficiencies in soil, improving plant growth and crop yields.
  • Construction: It is used in the production of fire-resistant and insulating construction materials, including fire bricks and boards for high-temperature applications.
  • Chemical Industry: Magnesia is used in the chemical industry as a source of magnesium compounds and as a catalyst in various chemical processes.
  • Pharmaceuticals: Magnesium oxide, a derivative of magnesia, is used in pharmaceutical formulations as an antacid and laxative.
  • Electrical Insulation: Due to its electrical insulating properties, magnesia is used in electrical components, including heating elements and insulators.
  • Abrasives: Magnesia is used as a filler material in abrasive products, enhancing their wear resistance and durability.
  • Animal Feed: It is used as a dietary supplement in animal feed to provide magnesium to livestock and poultry.

Product Typical Characteristics

  • Chemical Composition: Magnesia products primarily consist of magnesium oxide (MgO), with varying levels of purity depending on the intended application.
  • Crystal Structure: Magnesia can exhibit different crystal structures, including periclase (cubic) and brucite (hexagonal), depending on its form and processing.
  • Color: Magnesia products are typically white or off-white in color, although impurities can influence coloration.
  • Hardness: Magnesia is a relatively soft material, with a hardness of about 5.5 on the Mohs scale.
  • Density: Magnesia has a density ranging from 3.5 to 3.6 grams per cubic centimeter (g/cm³), depending on its form and purity.
  • Melting Point: Magnesia has a high melting point of approximately 2,800 degrees Celsius (5,072 degrees Fahrenheit).
  • Thermal Conductivity: It has low thermal conductivity, making it valuable for insulating applications in high-temperature environments.
  • Electrical Insulation: Magnesia is an excellent electrical insulator, making it suitable for electrical components and insulating materials.
  • Chemical Stability: Magnesia is chemically stable and resistant to most chemicals, including acids and alkalis.
  • Refractory Properties: Magnesia products exhibit exceptional refractory properties, with the ability to withstand high temperatures and thermal shock.
  • Particle Size: The particle size of magnesia products can vary, with different grades available for specific applications, from fine powders to coarse granules.
  • Purity: The purity of magnesia products can vary, with high-purity grades preferred for applications where low impurity levels are critical.

Malli Minerals International, Inc supplies Magnesia mineral to worldwide customers. Our in-house manufacturing facility processes Magnesia in different mesh sizes as per our customer’s needs. We have access to abundant natural resources of Magnesia mineral to supply to our customers worldwide.

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1451 E 8th Street, Jacksonville, FL 32206




Offices located at

1451 E 8th Street, Jacksonville, FL 32206Chemiddi Village, Gudur Mandal, Nellor Dist., Andhra Pradesh, India


1451 E 8th Street, Jacksonville, FL 32206