calcination


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

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
..... 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.

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.
Mentioned in ?
References in periodicals archive ?
Calcination at 800 AdegC transformed MnCO3 to Mn2O3 particles, while particle shape integrity retained to a significant extent.
Synthesis and Characterization of uniform Fine particles of Manganese Oxide and its Morphological Stability towards Calcination Rates
69 for HAp obtained by the calcination method; and that it is very close to the stoichiometric value of 1.
High temperature C[O.sub.2] capture of hydroxyapatite extracted from tilapia scales/Captura de C[O.sub.2] a altas temperaturas, de hidroxiapatitas extraidas de escamas de tilapia/Captura de C[O.sub.2] a altas temperaturas por hidroxiapatita extraida de escamas de tilapia
From the Table 3 it is clear that after calcinations the quantity of quartz (raw impurities) was 82.
DEVELOPMENT OF CEMENT REPLACEMENT MATERIAL / POZZOLAN FROM WASTE PAPER SLUDGE
Non hydraulic / fat lime could be obtained by calcinations of nearly pure Lime-stone.
LIME MORTAR IN CONSERVATION FOR HISTORIC BUILDINGS OF PAKISTAN
The new calcination technology guarantees highly efficient process management that is optimized for quality.
Heubach expands production of Complex Inorganic Color Pigments
4] powder using two different fuels, and by varying the calcination temperature and the calcination time that can be used as oxygen carrier in CLC application.
Synthesis of NiO-Ni[Al.sub.2][O.sub.4] oxygen carriers by solution combustion method using palm oil derived fuel for chemical looping combustion
When calcination temperature increases, the fibers are mainly necklace-like well- crystallized nanofibers.
The microstructure and characterization of nickel ferrite nanofibers
A possible mechanism was that by calcination of PMMA@Fe[(OH).
Preparation of magnetic hybrid microspheres with well-defined yolk-shell structure
2] emissions reduction realized in alternative calcination.
Researchers eye reverse calcination for reduced-carbon cement production
The experimental calcination temperatures established in the rotary kiln were restricted between 750[degrees]C and 940[degrees]C, since according the STA analysis, the dehydroxilation of the kaolinite occurs from 400[degrees]C to 900[degrees]C Due to the formation of particle aggregates during the calcination process, some of the calcinated materials (MK-830, MK-850, MK-900 and MK-940) were submitted to a soft mechanical disaggregation (Table 4).
Pozzolanic activity of metakaolins by the French standard of the modified Chapelle test: a direct methodology
83) After calcination and conversion to zinc oxide, the size is reported to diminish to 25 nm, calculated by Scherrer equation.
Nanoparticulate inorganic UV absorbers: a review
In the second reaction, the so-called calcination reaction, CaC[O.
Carbon capture

Encyclopedia browser ?
Full browser ?