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magnesite

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magnesite (măg`nəsīt), mineral, magnesium carbonate, MgCO3, white, yellow, or gray in color. It originates through the alteration of olivine or of serpentine by waters carrying carbon dioxide; through the replacement of calcium by magnesium in calcareous rocks, sometimes limestone but more often dolomite; and through precipitation from waters rich in magnesium that have undergone reaction with sodium carbonate. Caustic magnesite is not thoroughly calcined, 3% to 4% of carbon dioxide being left; mixed with magnesium chloride it makes oxychloride cement, which is extensively 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 firebrick, brick that can withstand high temperatures, used to line flues, stacks, furnaces, and fireplaces. In general, such bricks have high melting points that range from about 2,800°F; (1.540°C;) for fireclay to 4,000°F; (2,200°C;) for silicon carbide.
..... Click the link for more information. . Magnesite is also used in the manufacture of Epsom salts, face powder, boiler wrappings, and disinfectants.
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said: "The acquisition of ASMAS, with its own kilns and sources of magnesite, represents an opportunity for vertical integration, which will enhance Minteq's ability to offer its state-of-the-art refractory technology to steel industry customers in the Middle East and Eastern Europe through an attractive delivered cost position.
Minerals Technologies Inc. to Acquire Refractories Business in Turkey by Business Wire
Magnesite has a wide variety of industrial applications (Simandl, 2002) and the same applies for silica.
Geological, ocean, and mineral C[O.sub.2] sequestration options: a ... by Simandl, George J. / Geoscience Canada
This report analyzes the worldwide markets for Magnesium, Magnesite and Dolomite in Metric Tons.
Global Magnesium, Magnesite, and Dolomite Markets Forecasted to 2010 by Business Wire
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