Malli Minerals International, Inc supplies Magnetite mineral to customers worldwide. Our state-of-the-art processing facilities offer Magnetite in customized mesh sizes and forms (lumps, granules, powder) to suit industrial needs. Backed by access to abundant Magnetite reserves, we ensure a consistent supply of high-grade material across sectors including steel production, water treatment, energy, and more.

Magnetite (Fe₃O₄) is a naturally occurring iron oxide mineral and one of the most important sources of iron ore. Known for its magnetic properties, metallic luster, and high iron content, magnetite appears black to dark gray and exhibits strong magnetism. It is found in igneous, metamorphic, and sedimentary rocks and is widely used in heavy industry, chemical processing, and emerging green technologies.

Key Industrial Applications of Magnetite

• Steel and Iron Production
  Magnetite is a major iron ore used in the production of steel. Its high iron content (up to 72.4%) makes it an efficient feedstock in blast furnaces and direct reduction processes for iron and steel manufacturing.

• Heavy Media Separation (HMS)
  Due to its high specific gravity and magnetic properties, magnetite is used in coal washing and mineral separation processes. It enables dense media separation by enhancing the specific gravity of the separating liquid.

• Water Filtration
  Magnetite is used in industrial water treatment and wastewater filtration systems. Its granular form acts as an efficient filter media, removing impurities and heavy metals from contaminated water.

• Magnetic Applications
  Magnetite’s natural magnetism is leveraged in electromagnetic devices, magnetic recording media, and ferrite core manufacturing. It is also used in ferrofluids and magnetorheological fluids for motion control applications.

• Radiation Shielding
  High-density magnetite aggregates are used in concrete formulations for radiation shielding in medical, nuclear, and industrial facilities.

• Catalysis and Chemical Processing
  Magnetite is used as a catalyst and in catalyst support systems in chemical reactions, such as in ammonia synthesis and Fischer-Tropsch processes.

• Soil Remediation and Environmental Use
  Magnetite nanoparticles are increasingly applied in soil remediation to remove heavy metals and pollutants. It is also being studied for use in carbon capture and environmental cleanup technologies.

• Ballast and Weighting Applications
  In offshore drilling and construction, magnetite is used as a weighting agent for cement slurries and ballast in high-density concrete.

• Energy Storage (Emerging)
  Magnetite is under research for use in lithium-ion battery anodes and thermochemical energy storage systems due to its electrochemical and thermal properties.

• Pigments and Cosmetics
  Finely ground magnetite is used as a natural black pigment in paints, inks, and cosmetics, providing a rich, deep coloration with UV and chemical resistance.

Typical Characteristics of Magnetite