CENTRIFUGAL EXTRACTION OF RARE-EARTH MOTHER LIQUID WITH NAPHTHENIC ACID

This invention relates to a process for extracting rare-earth oxide from the mother solution of rare-earth ore. Such additives such as efficient ammonia compounding agent, coextractant and extraction inhibitor are added to naphthenic acid-kerosene extraction system and a centrifugal extraction is co...

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Bibliographische Detailangaben
Hauptverfasser:	SHI ENDONG ET AL, XIAO YINONG, WANG FUSHAN
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	This invention relates to a process for extracting rare-earth oxide from the mother solution of rare-earth ore. Such additives such as efficient ammonia compounding agent, coextractant and extraction inhibitor are added to naphthenic acid-kerosene extraction system and a centrifugal extraction is conducted to solve the problem of organic-phase emulsifiaction loss. Compared with conventional oxalic acid deposition method, it has omited such technological steps such as deposition, burning, acid dissolving and removing impurities and advantages such as so featuring simple technology, less environmental pollution and high yield rate of rare-earth elements.