Calciothermic reactions are metallothermic reduction reactions (more generally, thermic chemical reactions) which use calcium metal as the reducing agent at high temperature.
Calcium is one of the most potent reducing agents available, usually drawn as the strongest oxidic reductant in Ellingham diagrams, though the lanthanides best it in this respect in oxide processes.[1] On the other hand, this trend does not continue to other compounds that are non-oxides, and for instance lanthanum is produced by the calciothermic reduction of the chloride, calcium being a more potent reducing agent than lanthanum involving chlorides.
An interesting way of performing calciothermic reductions is by in-situ generated metallic calcium, dissolved in molten calcium chloride, as shown in the FFC Cambridge Process.
^Kasimtsev, A. V.; Yudin, S. N.; Levinsky, Yu. V. (2020-12-29). "Calciothermic powders of rare metals and intermetallic compounds". Non-ferrous Metals: 31–50. doi:10.17580/nfm.2020.02.05. ISSN 2072-0807.
^Figueroa, Javier; Williamson, Mark A. (2014-09-25). Uranium Dioxide Conversion (Report). Argonne National Lab. (ANL), Argonne, IL (United States).
^Abdelkader, Amr Mohamed; El-Kashif, Emad (2007). "Calciothermic Reduction of Zirconium Oxide in Molten CaCl2". ISIJ International. 47 (1): 25–31. doi:10.2355/isijinternational.47.25.
calciothermic, reaction, metallothermic, reduction, reactions, more, generally, thermic, chemical, reactions, which, calcium, metal, reducing, agent, high, temperature, calcium, most, potent, reducing, agents, available, usually, drawn, strongest, oxidic, redu. Calciothermic reactions are metallothermic reduction reactions more generally thermic chemical reactions which use calcium metal as the reducing agent at high temperature Calcium is one of the most potent reducing agents available usually drawn as the strongest oxidic reductant in Ellingham diagrams though the lanthanides best it in this respect in oxide processes 1 On the other hand this trend does not continue to other compounds that are non oxides and for instance lanthanum is produced by the calciothermic reduction of the chloride calcium being a more potent reducing agent than lanthanum involving chlorides Calciothermic processes are used in the extraction of metals such as uranium 2 zirconium 3 and thorium 4 from oxide ores An interesting way of performing calciothermic reductions is by in situ generated metallic calcium dissolved in molten calcium chloride as shown in the FFC Cambridge Process See also editAluminothermic reaction Silicothermic reactionReferences edit Kasimtsev A V Yudin S N Levinsky Yu V 2020 12 29 Calciothermic powders of rare metals and intermetallic compounds Non ferrous Metals 31 50 doi 10 17580 nfm 2020 02 05 ISSN 2072 0807 Figueroa Javier Williamson Mark A 2014 09 25 Uranium Dioxide Conversion Report Argonne National Lab ANL Argonne IL United States Abdelkader Amr Mohamed El Kashif Emad 2007 Calciothermic Reduction of Zirconium Oxide in Molten CaCl2 ISIJ International 47 1 25 31 doi 10 2355 isijinternational 47 25 Vignes Alain 2013 02 28 Extractive Metallurgy 3 doi 10 1002 9781118617106 ISBN 9781118617106 nbsp This chemical reaction article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Calciothermic reaction amp oldid 1219736962, wikipedia, wiki, book, books, library,
