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  • China’s magnesia export market flat ahead of new year holiday

    Tuesday, 25 January 2022

    China’s magnesia export market was flat in the week to Tuesday January 25 with the approach of the lunar new year holiday, January 31-February 6, with overseas buyers taking a watchful stance and in no hurry to buy. There will be limitations on magnesia production in Liaoning until the middle of March.

  • China acidspar export market quiet ahead of new year holiday

    Tuesday, 25 January 2022

    China’s acidspar export prices have been stable recently amid thin overseas trade, with most fluorspar acidspar producers preparing for the lunar new year celebrations on January 31-February 6. Meanwhile, the country’s exports and imports of fluorspar acidspar both showed year-on year declines in December 2021.

  • Spot spodumene prices continue uptrend amid lingering supply concerns

    Tuesday, 25 January 2022

    Spot prices for spodumene concentrate continued to post sharp gains over the past fortnight due to tight supply combined with continuously improving demand for downstream lithium chemicals amid booming electric vehicle (EV) demand worldwide.

  • Fastmarkets launches graphite electrodes prices with firm market facing rising costs

    Friday, 21 January 2022

    The first week of Fastmarkets’ coverage of China’s high power (HP) and ultra-high power (UHP) graphite electrodes prices examined a market in which prices were described as already high and expected to climb further, due to rising costs for raw materials, sources said.

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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.



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



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.