calcination

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Related to Calcinated: calcined limestone

calcination

(kăl'sənā`shən), in metallurgymetallurgy
, science and technology of metals and their alloys. Modern metallurgical research is concerned with the preparation of radioactive metals, with obtaining metals economically from low-grade ores, with obtaining and refining rare metals hitherto not used, and with the
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, 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.

calcination

[‚kal·sə′nā·shən]
(chemical engineering)
A process in which a material is heated to a temperature below its melting point to effect a thermal decomposition or a phase transition other than melting.
References in periodicals archive ?
The catalyst was calcinated at 430[degrees]C for 3 h; the flow rate of lactic acid and carrier C[O.
The mixture was then filtered, rinsed with deionized water and ethanol, dried at 150 [degrees]C for 2 h, and calcinated at 800 [degrees]C for 6 h to prepare the core-shell Ni[Fe.
From time to time, scatter an activator over the surface - such as calcinated seaweed.
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.
After coating, the substrates were calcinated in air flow at 110[degrees]C during 1 h, and then at 700[degrees]C during 2 h (temperature ramp: 80[degrees]C/min).
At the end, the synthesized powder was calcinated at a high temperature, and auburn powder (hydroxyapatite encapsulated y-Fe2O3 nanoparticles) was obtained.
The sample of spent oil shale was ground to fine powders (<96 [micro]m) and calcinated at different temperatures for 1.
In the CIS territory GOST 4668 is valid, according to which for measurement of the anthracite SER a specimen of a lumpy material is sampled according to a respective standard from the calcinated material lot.
New discoveries at the site of Ile de Martigues show the presence of elements of grape as well as carbonized pips, peduncles of grapes and calcinated grapes which, according to Marinval (1988), recall 'strongly calcination residues of wine-must'.
After that, they did layer deposition by means of submerge method, dried resulting layers and calcinated them.
The residual fiber length in the injection molded specimens was determined in the following way: pieces cut from the middle section of dumbbell specimens were calcinated in ceramic pots with gas flame and in electric oven at 500[degrees]C.
SER value of produced thermoanthracite as the main parameter of the calcinated coal quality turned out to be rather low, which proves achievement of the coal thermal treatment goal.