Anreicherung schwerer Yttererden aus Magnesiumnitrat-haltigen Lösungen durch basische Fällung mit MgO und fraktionierte Kristallisation der Nitrate in großem Maßstab
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Enrichment of heavy yttrium earths from solutions containing magnesium nitrate by basic precipitation with MgO and fractional crystallisation of the nitrates in large quantities
Partial basic precipitation by magnesium oxide concentrates the heavy yttrium earths in the precipitate, while yttrium and the lighter earths remain in solution. On fractionating the above solutions by crystallisation of the nitrates, yttrium and the heavy yttrium earths concentrate in the solutions; this method seems better for the treatment of large quantities than the former one. From solutions containing 68.9 kg mixed yttrium earth oxides the heavy ones were concentrated to a great extent in 35.8 kg oxide.
KeywordsBasic precipitation, partial of yttrium earths Fractional crystallisation, of yttrium earth nitrates Heavy yttrium earths, concentration
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