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The process of calcining.


Etymology: L, calcinare, to burn lime
the heating of inorganic materials to drive off water. It is used in dentistry to manufacture plaster and stone from gypsum. Compare calcification.


The process of heating a solid (e.g., an ore) in air below its melting point to effect thermal decomposition, phase transition or remove volatiles, thereby changing the original solid into something else—e.g., heating calcium carbonate to release CO2 gas and form calcium oxide.

calcination (kal´sinā´shən),

n a process of removing water by heat; used in the manufacture of plaster and stone from gypsum.
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References in periodicals archive ?
x] layer onto the metallic foam, the sample was calcinated in the conditions previously determined for plates (no post-treatment, 1[degrees]C/min heating rate, final temperature 650[degrees]C during 1 h).
Presented data on measurements were obtained on specimens of 7 x 7 x 40 [micro]m size cut from pieces of coal calcinated in the rotating drum furnace.
By using mentioned formula one can calculate SER value not just for separate fractions of thermoanthracite, but also for calcinated in the furnace coal charge as a whole.
Carbon charge of mentioned blocks consisted at that time of 60 % of gas calcinated thermoanthracite, 20 % of graphite dust, and 20 % of coal-tar pitch.
The experiments were carried out with thermogravimetric equipment (Q-derivatograph, MOM and Labsys, Setaram), the samples were calcinated in dynamic heating conditions (5 or 10 K per min) in the atmosphere of air, and carbonised or sulphated in isothermal conditions (at the temperature interval 400-800[degrees]C) in the atmosphere of C[O.
Calcinated samples of Karinu limestone and Hellamaa dolostone bound 0.
Other on-site disposal activities may have included dumping furnace dust in an isolated pond and burial of 900 drums of calcinated phosphate sand contaminated with 20 percent elemental phosphorus.
After determining the approximate calcination temperature, we calcinated dry gel at 600AC, 650AC, and 750AC," he added.
Then the variation of the concentration with time was inferred from the weight of the calcinated samples.
2) showed the formation of particles of high porosity and sponge-like structure when calcinated at lower temperatures, but formation of liquid phase and pore blocking at higher temperatures (over 950[degrees]C).
Then, they dried the mixture and calcinated it at different temperatures and finally synthesized a proper composition of the desired nanocomposite with the least phase decomposition at 950AC.
Silica was used as tracer, the variations of its concentration with time at each location being inferred from the weight of calcinated samples.