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calcination |
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calcination (kăl'sənā`shən), in metallurgy metallurgy (mĕt`əlûr'jē), science and technology of metals and their alloys . ..... Click the link for more information. , process of heating solid material to drive off volatile chemically combined components, e.g., carbon dioxide. It is sometimes a step in the extraction of metals from ores. Calcination is distinguished from drying, in which mechanically held water is driven off by heating, and from roasting, in which a material is heated in the presence of air to oxidize impurities. Originally calcination meant the method of obtaining lime (calcium oxide) from limestone by heating it to drive off carbon dioxide. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Many sprout farmers currently use calcium hypochlorite to eliminate bacteria from seeds, but organic farmers - who constitute about half the growers - resist this method, so Slade is researching alternative methods of treating seeds, such as thermal processing, electron-beam treatment, and disinfection with hydrogen peroxide or calcinated chloride. Nonnius (Nunez) is referred to as a Frenchman, and illustrations of Jordan almonds and candy (57 and 58) are misidentified as some kind of alchemical calcinated drug. TIPS produces up to five separate revenue streams, including electricity, CO2 sales, sales of industrial acids and gases, emission credits as well as a calcinated ash," added Cossey. |
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