Magnesite for refractories

Product information

LKAB Minerals offers a range of Magnesite minerals, including Dead Burnt Magnesite, SKLS Magnesite, and Nedmag Magnesia, for several refractory applications:

• Magnesite is a natural ore identified as magnesium carbonate, occurring as a primary mineral in igneous and sedimentary rocks, with 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 with high purity, stability and 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.

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 get in touch for further information.

Our Magnesite packaging

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

Applications

Magnesite is a high-purity magnesium carbonate mineral used in high-temperature applications due to its superior thermal resistance and stability. Some key applications include:

Refractory bricks & linings

• Used in furnace linings for steelmaking, cement kilns, and non-ferrous metal processing.
• Withstands extreme temperatures and protects against slag and chemical corrosion.

Steel & iron production

• Essential in basic oxygen furnaces (BOF) and electric arc furnaces (EAF) as a refractory material.
• Enhances furnace longevity by resisting high heat and aggressive slags.

Cement & lime kilns

• Applied in rotary kilns to prevent thermal wear and extend operational lifespan.
• Provides high resistance to alkali attack, improving kiln efficiency.

Glass & ceramics industry

• Used in glass tank regenerators and ceramic kilns due to its heat-resistant properties.
• Prevents contamination and ensures uniform heat distribution in production.

Thermal insulation materials

• Incorporated into castables and refractory mortars for insulation in high-temperature environments.
• Reduces heat loss and enhances energy efficiency in industrial processes.

Mineral information

Below are the typical properties of our refractory-grade Magnesite.

Physical properties of Magnesite

Chemical properties of refractory-grade Magnesite

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.

Toxicology

Magnesite products are inert and non-toxic. You can download the Material Safety Data Sheets from our company information page.