Refractory grade Magnesite

Magnesite ore is mined and classified then purified and calcined to provide the raw material for refractory grade magnesite products.

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Vicky Yates

Vicky Yates

Sales Manager, Refractory Minerals & Olivine

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As Magnesite is a natural ore identified as a magnesium carbonate, occurring as a primary mineral in igneous and sedimentary rocks. LKAB Minerals offer a range of Magnesites including Dead Burnt Magnesite, SKLS Magnesite and Nedmag Magnesia for a number of refractory applications.

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.

refractory grade magnesite different grades

Refractory grade magnesite standard grades

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

Other grades are available on request, please contact your representative for further information.

Refractory grade magnesite packaging

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

The typical properties of Refractory grade Magnesite are:

Physical properties of Refractory grade Magnesite

Bulk density [g/m³]
Total moisture [%]
App. Porosity [cm³s²]

Chemical properties of Refractory grade Magnesite

Dead Burnt Magnesite
SKLS Magnesite
Nedmag 99 Magnesia
MgO [%]
Al2O3 [%]
SiO2 [%]
Fe2O3 [%]

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.

Downloads on request