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10. Recycling
Secondary magnesium consumes only 5% of the energy required to produce primary magnesium by thermal processes, and 10% by electrolytic processes, i.e. around 3.5 kWh/kg of metal. .
10.1 Recycling magnesium metal
Around 200,000 tonnes a year of magnesium scrap are recycled and reused with primary magnesium metal in the HPDC (High Pressure Die Casting) process. The percentage of scraps in the feed for this process is between 40% and 60%, but only 25% in extrusion processes.
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Metal manufacturing processes and recycling
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Recycling
Substitutes
Bibliography
Reviews
Canadian Institute of Mining and Metallurgy
Chemical Engineering
Electro Chemical Society
Encyclopedia of Chemical Technology, Kirk-Othmer
Engineering and Mining Journal...
Events
Annual conferencesInternational Magnesium Association (IMA) (founded 1943). [email protected] .
Economic data
1. World magnesite production
In 2007, world mine production of magnesite totaled over 4.5 Mt (excluding the United States). It came mainly from China (1.87 Mt), Turkey (0.93 Mt), North Korea (1.85 Mt), Russia (0.35 Mt), Spain (0.15 Mt) and Greece (0.15 Mt). In addition to this production, some 10.1 Mt of magnesite were extracted from seawater and salt lakes; for Japan and the USA, production from seawater was 5...
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