Every mineral we produce is refined through decades of expertise to meet modern industrial demands. From construction and agriculture to advanced manufacturing, our materials help industries build stronger, cleaner, and longer-lasting solutions.
Keep your offshore wind turbine structures stable - whether floating or securely anchored to the seabed - using heavyweight MagnaDense natural minerals.
Offshore wind power structures
The global expansion of offshore wind power has created a growing demand for effective ballast solutions to stabilise renewable energy turbines. LKAB Minerals supplies high-density MagnaDense for offshore wind projects. Depending on the foundation design, MagnaDense can be used either as loose ballast or as an aggregate in concrete.
Manufactured from the natural mineral magnetite, MagnaDense achieves densities of up to 5.1 t/m³, making it ideal for applications where maximum weight, minimum volume, and high stability are required.
Wind turbine foundations stay in place with heavyweight ballast
Offshore wind turbine structures require secure foundations that can withstand undersea currents and long-term abrasion. By design, these foundations must have significant weight to resist ocean movements and the stresses generated by rotating turbine blades.
MagnaDense aggregate, produced from natural iron ore, plays a vital role in achieving this stability. Its high density and excellent performance in underwater conditions make the MagnaDense product range a perfect fit for offshore wind foundations.
Watch the offshore video below, which explains in detail the origin of our high-density natural mineral, the logistics routes, and the services we can provide to support your offshore wind power project.
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HyWind video
MagnaDense for floating wind farms
MagnaDense is used in both gravity-based and floating wind turbine structures, either as loose ballast or within high-density concrete. Thanks to its high density and favourable underwater conditions, the MagnaDense product range is an ideal solution for offshore wind turbine foundations.
MagnaDense enhances stability and long-term durability, ensuring reliable performance throughout the lifetime of floating wind turbine installations.
LKAB Minerals supplied MagnaDense to the world’s first commercial floating wind farm, Hywind, located offshore Scotland and completed at the end of 2017. A detailed case study is available upon request.
Key benefits of MagnaDense:
High density – more weight in less volume
Lower centre of gravity – improved structural stability
Chemically inert – not affected by seawater conditions
Non-leaching material – safe for use in water
Reusable – can be recovered and reused without loss of properties
Environmentally responsible – harmless in all forms
Secure availability – sourced from own resources
Consistent quality – controlled and reliable production
Flexible offshore installation – suitable for belt, fall-pipe, or pump placement
Logistics and global availability
Wherever your offshore wind power project is located, LKAB Minerals supports you in finding the most efficient logistics solution for MagnaDense supply.
Sourced from LKAB’s own mines in Kiruna and Malmberget in northern Sweden, the iron oxide aggregate is transported to the ports of Luleå (Sweden) or Narvik (Norway). From there, it is stored in silos or distributed to strategic stock locations. We also deliver directly to offshore project sites, ensuring reliable and flexible supply to meet your project requirements.
Contact our Sales Managers for a quotation, specification or a sample.
