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Magnesite
Magnesite carbonate, also known as magnesite when found
in nature, is a white or colourless chemical used to make magnesium
oxide. Its formula is MgCO3.
Magnesite belongs to the calcite group, a group of related carbonates
that are isomorphous with one another. Similar in many physical
properties, they may partially or fully replace one another,
forming a partial solid solution series.
Caustic magnesite is not completely calcined, 3% to 4% of carbon
dioxide being left. Mixed with magnesium chloride it makes oxychloride
cement, mainly used for floorings and as a stucco. Dead-burned
magnesite is calcined in kilns until it contains less than 1%
of carbon dioxide. It is made into an excellent firebrick.
83% of the magnesite produced is used in the refractory industry.
Elsewhere, magnesite is used as animal feed and fertiliser,
in the paper industry, in the manufacture of Epsom salts, face
powder, boiler wrappings and disinfectants.
Links:
-
MADKIM Maden San.ve Tic Ltd.
-
British Geological Survey
- Euopean Mineral Statistics 2002-2003
-
Grecian Magnesite S.A.,
- Kümas
Kütahya Manyezit AS,
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Magnesitas Navarras S.A.,
- Magnesitas
de Rubian S.A.,
- Nedmag
Industries Mining & Manufacturing B.V.,
-
RHI Refractories,
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Slovenské Magnezitové Závody AS Jelsava,
- Styromagnesit
Steirische Magnesitindustrie GmbH (Styromag)
Magnesite Production
Thousand Tonnes
| |
1999 |
2000 |
2001 |
2002 |
2003 |
| Europe |
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| Austria |
748.635 |
725.832 |
680.534 |
728.235 |
766.525 |
| Greece |
495.144 |
492.780 |
483.296 |
558.057 |
549.049 |
| Poland |
34.000 |
54.830 |
23.000 |
24.000 |
33.000 |
| Russia (Europe) |
2.160.000 |
2.250.000 |
2.340.000 |
1.350.000 |
1.080.000 |
| Slovakia |
917.700 |
1.000.700 |
1.239.000 |
930.000 |
900.000 |
| Spain |
211.000 |
160.000 |
214.000 |
185.000 |
150.000 |
| Turkey |
2.146.127 |
2.672.089 |
2.738.086 |
2.800.000 |
3.224.278 |
| Yugoslavia |
82.000 |
80.000 |
78.000 |
75.000 |
73.000 |
| total |
6.794.606 |
7.436.231 |
7.795.916 |
6.650.292 |
6.775.852 |
| |
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| Africa |
|
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| South
Africa |
63.700 |
97.446 |
98.000 |
99.000 |
100.000 |
| Zimbabwe |
5.356 |
5.800 |
6.000 |
6.200 |
6.400 |
| total |
69.056 |
103.246 |
104.000 |
105.200 |
106.400 |
| |
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| Asia |
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| China |
2.200.000 |
2.500.000 |
3.500.000 |
3.600.000 |
3.500.000 |
| Korea |
800.000 |
650.000 |
650.000 |
450.000 |
580.000 |
| India |
345.000 |
340.000 |
330.000 |
280.000 |
300.000 |
| Russia (Asia) |
240.000 |
250.000 |
260.000 |
150.000 |
120.000 |
| total |
3.585.000 |
3.740.000 |
4.740.000 |
4.480.000 |
4.500.000 |
| |
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| America |
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| Brazil |
208.800 |
300.000 |
265.749 |
310.000 |
330.000 |
| Canada |
200.000 |
270.000 |
300.000 |
200.000 |
150.000 |
| Colombia |
7.300 |
7.100 |
7.000 |
6.900 |
6.700 |
|
total |
416.100 |
577.100 |
572.749 |
516.900 |
486.700 |
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| Oceania |
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| Australia |
341.067 |
349.933 |
540.000 |
540.000 |
553.847 |
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total |
341.067 |
349.933 |
540.000 |
540.000 |
553.847 |
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| WORLD TOTAL
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11.205.829 |
12.206.510 |
13.752.665 |
11.775.492 |
12.422.799 |
Source: Österreichisches Bundesministerium für Wirtschaft
und Arbeit, Abteilung IV/7: World Mining Data, April 2005
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