Interaction of loparite concentrate with ammonium hydrodifluoride

Results obtained in a study of the interaction between the loparite concentrate and ammonium hydrodifluoride are reported. It was found that the reactions of the main components of the concentrate with NH 4 HF 2 yield complex ammonium fluorometallates. It was shown that water leaching of the fluorin...

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Published inRussian journal of applied chemistry Vol. 89; no. 4; pp. 540 - 546
Main Authors Krysenko, G. F., Epov, D. G., Medkov, M. A., Merkulov, E. B., Ivannikov, S. I., Nikolaev, A. I.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2016
Subjects
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Industrial Chemistry/Chemical Engineering
Inorganic Synthesis and Industrial Inorganic Chemistry
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Summary:Results obtained in a study of the interaction between the loparite concentrate and ammonium hydrodifluoride are reported. It was found that the reactions of the main components of the concentrate with NH 4 HF 2 yield complex ammonium fluorometallates. It was shown that water leaching of the fluorinated product makes it possible to transfer niobium and tantalum into solution together with fluoroammonium salts of titanium and silicon and to concentrate rare-earth elements in the insoluble residue in the form of complex salts of general formula NaLnF 4 .
ISSN:1070-4272
1608-3296
DOI:10.1134/S1070427216040030