Open/Close Mobile Menu Open/Close Mobile Menu

Magnesia

Latest News

More from Latest News

Pricing News

More from Pricing News

Features

  • Talk From The Top: What those at the helm make of the last two years in industrial minerals markets

    Saturday, 21 May 2016

    While the majority of industrial mineral market participants are bracing themselves for another tough year, IM spoke to key industry players about adapting to current conditions and seeking out new markets.

  • Magnesia: A Sino-Soviet split?

    Friday, 18 March 2016

    China remains the world’s dominant magnesia supplier, but domestic overcapacity and shrinking international demand are unsettling the sector, particularly as the country looks set to lose one of its largest export markets – Russia. Albert Li, IM Analyst and Laura Syrett, Acting Editor, examine Chinese export trends over the last year and look at Russia’s efforts to establish its own magnesia industry.

  • Yukon’s mineral industry – looking back and moving ahead

    Wednesday, 24 February 2016

    Low metal prices are keeping a lid on exploration, but as the Yukon Government’s Department of Energy, Mines and Resources explains, the territory is using the downtime to improve the industry’s regulatory framework, ready for a turnaround.

  • Magnesite and magnesia in Turkey

    Monday, 25 January 2016

    Turkey is a magnesite-rich country and has a long history of mining the mineral, both for export and increasingly for its own internal refractories and speciality materials sectors. Aykut Karaca, IM Correspondent, gives an overview of Turkey’s geological background and profiles some of the country’s main magnesite and magnesia producers.

More from Features

Market Brief

Magnesia is the term for magnesium oxide (formula: MgO). Magnesia is produced by mining and processing mainly the hard rock mineral, magnesite, which occurs in two main forms: cryptocrystalline and crystalline.

 

Rarely, magnesia may be produced from other hard rock minerals such as dolomite, brucite, huntite, and serpentinite.

 

Another commercially important source of magnesia is from chemical processing of seawater and magnesia-rich brines, which produces what is sometimes referred to as synthetic magnesia.

 

Grades produced include:

·         Crude magnesite

·         Caustic calcined magnesia (CCM)

·         Dead burned magnesia (DBM)

·         Fused magnesia (FM)

·         Magnesium compounds derived from CCM, eg. magnesium hydroxide, magnesium sulphate.

 

The source of the magnesia determines critical chemical and physical characteristics of the derived magnesia, such as MgO purity (ranges low to high, 85%-99% MgO), ratio of CaO:SiO2, bulk density, and magnesia crystal size.

 

Supply

The world’s total resource of magnesite, the main source of magnesia, is about 13bn tonnes. Six countries host 92% of this, in descending order: China (26%), North Korea (23%), Russia (21%), Slovakia (10%), Australia (7%), and Brazil (5%).

 

World magnesia production (derived from the magnesite) is about 8.5m. tpa, and is dominated by China (49%). Other leading producers include Austria, Brazil, Greece, Russia, Slovakia, Spain, and Turkey.

 

World synthetic  magnesia production (derived from seawater, brines) is about 925,000 tpa, from Brazil, Japan, Mexico, the Netherlands, Norway, Republic of Ireland, Russia, South Korea, and the USA.

 

Leading magnesia producers include:

Grecian Magnesite – Greece

Houying Group – China

Kumas-Kuthaya Magnesite Works Corp. – Turkey

Magnesita Refratarios – Brazil

Magnezit Group – Russia

Martin Marietta Magnesia Specialties – USA

Nedmag Industries Mining & Manufacturing – Netherlands

Queensland Magnesia – Australia

SMZ Jelsava – Slovakia

Ube Material Industries – Japan

 

Markets

Each end use requires different specifications of the preferred magnesia form, so there are many different grades of magnesia on the market. Certain magnesite deposits are better suited to produce certain magnesia grades than others.

 

Crude magnesite: agriculture, glass and ceramics.

 

CCM: agriculture; environment; cement; abrasive binder; pulp and paper; fillers; feedstock for DBM, FM, and magnesium compound production.

 

DBM: refractories.

 

FM: refractories; steel coatings; ceramics.