Abstract
Specific features of the physicochemical processes occurring in the interaction of kyanite concentrates with ammonium hydrodifluoride, sublimation of ammonium hexafluorosilicate, recovery of alumina and aluminum fluoride, synthesis of amorphous silica particles, and reduction of additional reagents were studied. The thermodynamic parameters, rate constants, and activation energies of the occurring chemical reactions were determined. The optimal conditions of the fluoride processing of kyanite concentrates with integrated recovery of various useful components were found.
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Original Russian Text © V.S. Rimkevich, I.V. Girenko, A.A. Pushkin, 2013, published in Zhurnal Prikladnoi Khimii, 2013, Vol. 86, No. 10, pp. 1511–1518.
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Rimkevich, V.S., Girenko, I.V. & Pushkin, A.A. Study of fluoride processing of kyanite concentrates. Russ J Appl Chem 86, 1470–1477 (2013). https://doi.org/10.1134/S1070427213100029
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DOI: https://doi.org/10.1134/S1070427213100029