Abstract
A thermodynamic calculation of the possibility of mass transfer of metal compounds in conditions of filtration combustion of metal-containing mixtures was carried out. According to the results the metals were divided into two groups: the first group includes metals that form both condensed and gaseous phases, and the second group includes metals that are only in the condensed phase. Under conditions of filtration combustion wave due to continuous evaporation and condensation, it is possible to organize mass transfer of compounds of the first group metals in order to concentrate them in a specific zone of the reactor. Metals of the second group do not participate in mass transfer under the conditions of a filtration combustion wave and will remain in solid combustion products (in ash). Their concentration is possible only if there is a large amount of a combustible component in the initial mixture. In this case, due to the burnout of the combustible part and the preservation of metal compounds in the ash residue, their concentration will occur. Concentration of metals will allow performing their further economically justified recovery by traditional methods.
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The research was carried out with the financial support of the Russian Foundation for Basic Research within the framework of scientific project no. 18-29-24029-MK and state assignment no. 0089-2019-0018, state registration number АААА-А19-119-022690098-3.
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Salgansky, E.A., Podlesniy, D.N., Tsvetkov, M.V. et al. Thermodynamic Estimating the Mass Transfer of Compounds of Rare Metals under Conditions of a Filtration Combustion Wave. Russ J Appl Chem 93, 1096–1101 (2020). https://doi.org/10.1134/S1070427220070228
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DOI: https://doi.org/10.1134/S1070427220070228