Projects in the Pipeline: Global update on magnesite resources and production

• Autores: Ian Wilson
• Localización: Industrial Minerals, ISSN 0019-8544, Nº. 552, 2013
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Production of magnesia from North Korea in 2011 was reported as 255,000 tonnes, with CCM (67%), CCM (23%) and FM (10%). Production was estimated to have decreased in 2012 by around 30% to 178,000 tonnes. Of this amount, 100,000 tonnes were exported with CCM (60%), DBM (25%) and FM (15%). Difficulties in the supply of coal and coke and transportation were the main reasons for this decrease.

    Magnezit has embarked on a programme of new capacity, which started in 2011 with an additional 235,000 tonnes, and will increase to an additional 650,000 tonnes in 2015. There will be an extra 400,000 tonnes from [Satka] and 250,000 tonnes from Krasnoyarsk in 2015. The split of the additional 650,000 tonnes will be 300,000 tonnes (CCM), 150,000 tonnes (DBM) and 200,000 tonnes (FM). A summary of these capacity increases from 2011-2015 is shown in Table 7.

    While most of the magnesite in China is the sparry type, there is a high-purity cryptocrystalline magnesite being developed by the Huayin Group based on the Kamaudo deposit in Tibet. Resources are reported as 120m tonnes and some trials have been carried out in Haicheng. The quality of the magnesite is reported as MgO (48.47%), SiO 2 (0.08%), [CaO] (0.55%), Fe 2 O 3 (0.03%), Al 2 O 3 (0.02%) and LOI (50.74%). A high-quality FM with MgO (99.9%), Fe 2 O 3 (<0.001%), SiO 2 (<0.001%) and CaO (<0.05%) suitable for PDP (plasma display panel) has been produced in a LPG high-temperature shaft kiln trial.