Life after steel: : Is there more for magnesia?
- Autores: Cameron Perks
- Localización: Industrial Minerals, ISSN 0019-8544, Nº. 592, 2017 (Ejemplar dedicado a: Abril)
- Idioma: inglés
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Resumen
According to the US Geological Survey (USGS), US imported and locally produced magnesia is predominantly caustic calcined magnesia (CCM) for use in the chemical industry, agricultural supplements and environmental applications. [...]fine-grained (cryptocrystalline) magnesite, under the correct calcination conditions, produces fine-grained magnesia, which has a higher population of reactive sites along the extended grain boundaries. According to its NI 43-101 report released in June 2016, Karnalyte's synthetic magnesium carbonate product can be used in the paint and printing industries as well as in fireproofing, fire-extinguishing, flooring, polishing compounds and as fillers and smoke suppressants in the paper, plastics and rubber industries. According to the USGS, the leading end use of magnesia continues to be in refractories for the steel industry. According to the World Steel Association (worldsteel), world crude steel production increased by 0.8% last year from 2015 to 1.63bn tonnes, although this was still 1.8% lower than the 1.66bn tonnes produced in 2014. Better technology and investment in R&D are also helping to create new applications for magnesia, which may benefit from a shift towards speciality chemicals as traditional bulk markets come under increasing pressure. *Conversions made March 2017 Magnesia and magnesite Magnesia is commonly produced by either calcination of naturally occurring magnesium-bearing minerals or by calcination of magnesium hydroxide that has been precipitated from liquid sources
