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Masloboeva S.M., Lebedev V.N., Arutyunyan L.G.
Extraction reprocessing of fluoride-sulphuric acid solutions resulting from plumbomicrolite concentrate decomposition
Abstract. The paper discusses solvent extraction of high-purity tantalum and niobium compounds from fluoride-sulphuric acid solutions resulting from the acidic decomposition of plumbomicrolite concentrate, proposing a flowsheet for sequential selective extraction of target components. The extraction of Ta(V) was studied using triisoamylphosphate and octanol-1 (OCL-1). The latter has proved to be effective for extracting both Ta(V) and Nb(V). There have been selected optimal regimes for all extraction stages to provide a high quality of target products (Ta2O5, K2TaF7, Nb2O5).
Keywords: plumbomicrolite concentrate, fluoride-sulphate solutions, solvent extraction, triisoamyl phosphate, octanol, tantalum and niobium compounds
Printed reference: Masloboeva S.M., Lebedev V.N., Arutyunyan L.G. Extraction reprocessing of fluoride-sulphuric acid solutions resulting from plumbomicrolite concentrate decomposition // Vestnik of MSTU. 2010. V. 13, No 4. P. -.
Electronic reference: Masloboeva S.M., Lebedev V.N., Arutyunyan L.G. Extraction reprocessing of fluoride-sulphuric acid solutions resulting from plumbomicrolite concentrate decomposition // Vestnik of MSTU. 2010. V. 13, No 4. P. -. URL: http://vestnik.mstu.edu.ru/v13_5_n42/articles/12_maslo.pdf.
