Magnetite

Product information

Magnetite is available in a wide range of high‑purity products, from fine to coarse grades and from wet to oven‑dried material. This flexibility allows us to meet the requirements of thermal storage and other diverse industrial applications.

Benefits of Magnetite

• Exceptionally high‑purity natural Magnetite (up to 71.5% Fe)
• Sourced from our own mines in Sweden, ensuring reliability and traceability
• Low levels of trace elements, supporting demanding industrial processes

Magnetite packaging and logistics

For your convenience, we can deliver our product in bulk or bags by:

• Ship
• Barge
• Container
• Train
• Individual truckload

As part of the international LKAB Group, LKAB Minerals operates 12 countries worldwide, providing you valuable local expertise. Most locations have their own storage facilities, enabling us to supply Magnetite on time, cost-effectively, and all year-round – always of the highest quality.

Use cases of Magnetite

• Energy storage
• Heavy media separation
• Alloy production
• Foundry applications
• Glass manufacturing
• Magnets and magnetic components
• Brake pads

From our natural Magnetite, we have developed product lines that meet industry‑specific requirements:

• MagnaDense for concrete and ballast
• MagnaChem for chemical processes
• MagniF as a functional filler in polymers and coatings

In addition to these specialised applications, our wide Magnetite product range is suitable for a broad variety of other uses.

Applications

Magnetite stands out for its versatility. This flexibility enables us to meet the requirements of a wide range of industrial applications such as thermal storage. Below is a brief overview of some of its applications:

Energy storage

• Ideal mineral for sensible heat storage due to excellent thermophysical properties.
• Used in different forms of energy storage that cycle between iron oxide and metallic iron.
• High density enhances potential energy storage capacity.

Heavy media separation

• Particle density up to 5.1 t/m³
• Ferrimagnetic properties enable efficient recovery, minimising material losses.

Alloy production

• Source of iron for the production of ferrosilicon, ferromanganese, and ferrochrome.
• Controlled particle size distribution ensures consistent processing.

Foundry

• Good thermal conductivity supports efficient heat transfer.
• Delivers high-quality metal surface finish.
• Provides anti-finning properties.

Catalyst

• Reduces required reaction temperatures in certain processes.
• Enhances chemical processes such as ammonia production, gas-to-liquid (GTL) processes, and oxidation reactions.

Thermite welding

• High-purity material ensures reliable performance.
• Controlled particle size distribution supports consistent reactions.

Mineral information

Magnetite mineral origin

Mined from our group resources, we can ensure our products’ long-term availability and consistent quality. Kiruna and Malmberget, in the northern part of Sweden, are the places where our Magnetite mines are located. The ore is mined and processed at the mine site and railed to one of the two ports – Luleå (Sweden) or Narvik (Norway). The ports are part of the LKAB Group logistics structure and are operated year-round.

Toxicology

Magnetite for foundry applications is harmless to the environment, non-toxic in all its forms and, for all practical purposes – inert.