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Magnesia

Latest News

  • Ohio will host new HarbisonWalker refractories plant

    Tuesday, 28 March 2017

    HarbisonWalker's has chosen South Point, Lawrence Country as the best location for its $30m monolithic refractories facility due to existing infrastructure.

  • Bauxite & Alumina ’17: Monolithics to continue growth trend

    Monday, 20 March 2017

    Unshaped refractories are expected to gain further traction in emerging markets, while penetration in mature markets will be slow, according to leading refractories producer Calderys.

  • Price Briefing 10-16 March

    Friday, 17 March 2017

    Antimony trioxide spot prices spike; magnesia unchanged but supply to remain tight; China-origin soda ash falls.

  • IM in Liaoning: China's magnesia supply set to remain tight until H2

    Wednesday, 15 March 2017

    During a recent trip to visit magnesia companies in Haicheng and Dashiqiao, in China’s Liaoning province, IM’s Albert Li learned that supply has become very tight, as a result of severe environmental restrictions. This has led to a surge in domestic prices and an expectation of a similar rise in export prices.

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Features

  • 2016 Year in Review

    Thursday, 15 December 2016

    A round up of the year's main events in major global industrial minerals markets such as lithium, agriminerals, rare earths and titanium dioxide.

  • Chinese magnesia and refractories: The new normal

    Monday, 22 August 2016

    The Chinese economy is entering a transition from a primarily export-orientated economy to a more consumer-driven economy. At the same time, increasing debt, slower growth and excess production capacity are contributing to what has been labelled as the “new normal” for China. Richard Flook and Ian Wilson examine the effect of this on the Chinese magnesia industry and the Chinese refractory industry.

  • India’s refractories industry: Ready to recover?

    Monday, 22 August 2016

    India’s economy and steel sector have been among a select few worldwide to post healthy levels of growth amid stagnant global GDP rates, but Chinese steel dumping and overcapacity have curtailed growth in the country’s refractories industry, Sunder Singh, IM Correspondent, explains.

  • Smelting point? An update on major refractories for glass smelters

    Monday, 22 August 2016

    Fused cast blocks have dominated the market for glass refractories since the early 20th century. Carlo Ratto takes a look at some of the alternative products which have emerged over the years and assesses the future uptake prospects for these materials.

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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.