Processing of plumbomicrolite of amazonite deposit Ploskaya Gora (Kola Peninsula)
A plumbomicrolite concentrate (PMC) was decomposed with the mixture of HF and H2SO4, HF and HCl, HF and HNO3 acids. Optimal conditions ensuring high recovery of tantalum and niobium (99%) into solution, and radionuclides into insoluble residue were determined. Fluoride-sulfuric acid and fluoride-nit...
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| Language: | unknown |
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2019
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| Online Access: | http://nbn-resolving.org/urn:nbn:nl:ui:13-0q-dcvs https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:116712 |
| Summary: | A plumbomicrolite concentrate (PMC) was decomposed with the mixture of HF and H2SO4, HF and HCl, HF and HNO3 acids. Optimal conditions ensuring high recovery of tantalum and niobium (99%) into solution, and radionuclides into insoluble residue were determined. Fluoride-sulfuric acid and fluoride-nitric acid schemes were proposed for PMC processing with an extraction separation of tantalum form niobium, lead and impurities and production of high-purity tantalum compounds. |
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