Magnesia

Latest News

More from Latest News

Pricing News

More from Pricing News

Features

  • Impact of China’s environmental push on mineral downstream sectors

    Tuesday, 04 February 2020

    Most provinces in China are still facing strict environmental restrictions during the winter months, with raw materials production and demand from the downstream sector affected to some degree, report Carrie Shi and Sybil Pan.

  • China’s magnesia recovery slows

    Friday, 03 January 2020

    Overcapacity in China’s magnesia sector and shrinking international demand have roiled the domestic market this year, dragging prices to a two-year low and prompting producers to lower output, reports Carrie Shi.

  • INTERVIEW: ‘I am going to transform our company’ - Severstal CEO

    Friday, 03 January 2020

    Alexander Shevelev, CEO of Russian steelmaker Severstal, says that the company has changed its culture quite quickly and substantially to focus on being a solutions provider. Richard Barrett asked him to explain that mission and to recall his path from the shop floor to the top of a company that employs 50,000 people

  • Brick by brick: Building an international refractory maintenance company

    Friday, 30 August 2019

    US-based Bricking Solutions has been in the refractories kiln maintenance business for more than 50 years and has been led by managing director Heather Harding since January 2019. She shares her views on the business she runs and the wider refractories industry.

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.