Methods for concentrating rare-earth metals in phosphogypsum and removing thereof from wet process phosphoric acid

Methods for concentrating rare-earth metals in phosphogypsum and removing thereof from wet process phosphoric acid

The present invention relates to a method for producing rare-earth metals (REM) compounds by complex processing of apatite, in particularly to a method for concentrating rare-earth metals (REM) in phosphogypsum, where to a process of decomposition of the REM containing raw phosphate material with su...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Safiulina, Alfiya Minerovna, Evtushenko, Aleksey Vladimirovich, Komkov, Aleksey Aleksandrovich, Genkin, Mikhail Vladimirovich, Spiridonov, Vasiliy Sergeevich, Shvetsov, Sergey Vladimirovich
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The present invention relates to a method for producing rare-earth metals (REM) compounds by complex processing of apatite, in particularly to a method for concentrating rare-earth metals (REM) in phosphogypsum, where to a process of decomposition of the REM containing raw phosphate material with sulphuric acid, a sodium salt in the amount of 0.25-5.0 kg in terms of Na2O or a potassium salts in the amount of 0.25-5.0 kg in terms of K2O or a mixture thereof in the amount of 0.25-5 kg in terms of Na2O and K2O to 1 kg of REM (in terms of Ln2O3 present in raw phosphate material) is added. The yield of REM transfer into phosphogypsum is up to 98%.