4. Natural resource processing
The treatment of natural resources involves the use of separative techniques to concentrate the magnesite contained in a mineral assemblage or in the magnesium salts present in seawater: impurities or soluble salts interfering with subsequent metallurgical processes leading to the metal or its oxide are thus largely eliminated.
4.1 Magnesite mining and mineral processing
The type of deposit determines the mining method. Massive magnesite deposits are generally quarried. Small, narrow and deep deposits, on the other hand, are mined using tunnels and underground workings.
Mined ore is rarely used in its raw form, and more often than not, mineralurgical operations are required: metallurgical treatments based solely on calcination do not...
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Natural resource processing
Magnesium metal extraction
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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