Refractory grade Magnesite

Magnesite is a natural ore identified as a magnesium carbonate, occurring as a primary mineral in igneous and sedimentary rocks. The magnesite ore is mined and classified; this material is then purified and calcined to provide the raw material for refractory grade magnesite products.

LKAB Minerals offer a range of Magnesites including Dead Burnt Magnesite, SKLS Magnesite and Nedmag Magnesia for a number of refractory applications.

Refractory grade Magnesite product uses


Due to their magnesia contents, our Magnesite materials are utilised in general and exacting refractory applications including:

  • MagCarbon Bricks
  • MagSpinel Bricks
  • Magnesite Bricks
  • MagDolomite Bricks
  • Refractory Specialities

LKAB Minerals offer a range of refractory grade magnesites including Dead Burnt, SKLS and Nedmag materials

Refractory grade Magnesite properties

Dead Burnt Magnesite is made by calcining the magnesite ore in a rotary kiln to produce a high purity product that has high purity, is stable and has good sintering properties.

SKLS Magnesite, also known as Periclase, is made using a calcination and seawater process.

Nedmag 99 is a high purity synthetic Dead Burned Magnesia produced by Nedmag Industries. It has a magnesia content of 99% min.

                                                                  MgO         Al2O3      SiO2      Fe2O3

Dead Burnt Magnesite 95.82 0.24 1.48 0.8
SKLS Magnesite 97.20 0.07 0.25 0.20
Nedmag 99 Magnesia 98.50 0.06  0.13  0.48

Contact your local representative to find out more or to request a datasheet.

Refractory grade Magnesite standard grades

LKAB Minerals range of magnesite materials are available in the following grades as standard:

5-8mm (-8+5mm)
3-5mm (-5+3mm)
1-3mm (-3+1mm)
0-5mm (-1mm)
0-250μm (-60#)
0-150μm (-100#)
0-15μm (-200#)

Other grades are available on request.

Refractory grade Magnesite packaging

Our magnesite materials are available in 25kg paper sacks, 1000kg bulk bags or as bulk as standard.

Refractory grade Magnesite origins

The origins of our magnesite materials are as follows:

  • SKLS Magnesite - originates from Ireland.
  • Dead Burnt (DB) Magnesite - originates from the Liaoning province in China.
  • Nedmag 99 Magnesia - sourced from the Netherlands.

Refractory grade Magnesite toxicology

Magnesite products are inert and non-toxic. Click on the links opposite to download the Material Safety Datasheets.

Please contact us for datasheets on a single grade or further information on our Refractory grade Magnesite product range. You can find our sales contact by choosing your country in the upper right expert box of this page.

Related products

  1. Magnesia recycled materials
    • LKAB Minerals offer a portfolio of magnesia based recycled refractory materials, sourced and processed at our own sites in the UK and Netherlands.

      More on Magnesia recycled materials
  2. Chrome Alumina
    • Chrome Alumina is produced by fusing high purity calcined alumina and chromium oxide. The end product has excellent hardness and resistance properties.

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  3. Mulcoa
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  4. Sarca Chamotte
  5. Mullite
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  6. Brown Fused Alumina
    • Brown Fused Alumina is a dense material produced from bauxite raw material which is fused in an electric arc furnace. This product is from a high quality consistent Chinese source. The end product has a low iron content making it particularly valuable in refractory applications.

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  7. Bauxite
    • LKAB Minerals process and supply a range of refractory grade Bauxites. The majority of global bauxite ore is used in the production of aluminium metals. However, refractory bauxite is the ore calcined at 1600 - 1650°C which produces a dense, high purity, stable aggregate.

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  8. Calcined Kaolin
    • Calcined Kaolin is an aluminosilicate material produced by heating natural kaolin to high temperatures in a kiln. This calcination process ensures consistent chemical and physical properties, making it ideal for refractory applications.

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  9. Olivine
    • Olivine is a naturally occurring mineral magnesium iron silicate sourced from Norway with a high melting point and density.

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Product expert

Vicky Yates
Sales Manager, Refractory Minerals & Olivine

Ask me a question. Contact information.