METHOD OF DECOMPOSING MONAZITE

FIELD: chemistry. ^ SUBSTANCE: invention pertains to the technology of rare and radioactive elements; solves the problem of decomposing monazite. The method of decomposing monazite involves its treatment in molten salts at temperature ranging from 400°C to 900°C and phosphorous removal. The salts us...

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Hauptverfasser:	NIZOV VASILIJ ALEKSANDROVICH, LEONT'EV VLADIMIR FEDOROVICH, KOSYNKIN VALERIJ DMITRIEVICH, MIKHEEV ANATOLIJ ALEKSANDROVICH, SMETANNIKOV VLADIMIR PETROVICH, SMIRNOV ALEKSEJ LEONIDOVICH, TERENT'EV GERMAN DMITRIEVICH, OBABKOV NIKOLAJ VASIL'EVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	FIELD: chemistry. ^ SUBSTANCE: invention pertains to the technology of rare and radioactive elements; solves the problem of decomposing monazite. The method of decomposing monazite involves its treatment in molten salts at temperature ranging from 400°C to 900°C and phosphorous removal. The salts used during treatment are nitrates of alkaline metals (MeNO3), and phosphorous removal is done by separation of the clear phase of the smelt and/or lightening the phosphate of alkaline metal (Na or K) in a water solution. ^ EFFECT: low treatment temperature and provision for separation of phosphorous as a commercial product. ^ 5 cl, 1 tbl, 6 ex