Magnesium Oxide Suppliers

The Production / Use of Magnesium Oxide

Magnesium Oxide (MgO) varies in reactivity according to the temperature at which it has been produced. Natural Magnesite is the raw material used most commonly for industrial grades of Magnesium Oxide. Magnesite (MgC03) can be calcined to produce highly reactive Magnesium Oxide generally known as Caustic Calcined Magnesite (CCM) at higher reaction temperatures the resultant Magnesium Oxide is considerably less reactive and colloquially known as Dead Burned Magnesite or Dead Burnt Magnesite. Electric arc furnaces producing very high temperatures to melt the magnesite create Fused Magnesite or Fused Magnesia. Another source of Magnesium Carbonate is sea water brine from which the Magnesium salts are precipitated and then calcined to produce Light Magnesium Oxide.

Calcined Magnesite

Calcined Magnesite is a cost effective source of chemical grade Magnesium Oxide used as an alkali for acid neutralisation both in process and in subsiquent effluent treatment. A range of purities are available along with a choice of particle size. 90% Magnesium Oxide is the most cost effective grade whereas 94% Magnesium Oxide introduces the lowest unwanted non reactives. Fine particle sizes are more reactive than course powder but can be found less easy to handle during processing.

Dead Burned Magnesite (also known as Dead Burnt Magnesite)

Dead Burned Magnesite is widely used as a basic refractory material. Dead Burnt Magnesite is produced in rotary kilns generally in Magnesium Oxide Purities of 90-95% MgO and widely used for gunning / ramming mass, for tundish linings and for fettling purposes. Dead Burned Magnesite can be supplied in lump for for end users to crush and grade or in ready sized form. Common sizings are 5-3mm, 3-1mm, -1mm, -0.5mm and DIN 70.

Fused Magnesia

Fused Magnesia is generally prepared in electric arc furnaces by fusing Calcined Magnesite. Fused Magnesia is a high performance basic refractory becoming more widely used for its durability under extreme conditions.

Light Magnesium Oxide

Light Magnesium Oxide (Magnesia) is a chemical grade Magnesium Oxide with low impurities used extensively for its consistent reactivity due to the controlled surface area. Light Magnesium Oxide is used in the surface coatings and rubber industries.

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