STUDY OF THE INTERACTION OF PRASEODYMIUM CHLORIDE WITH SODIUM AND POTASSIUM CHLORIDES IN MELTS

Journal Article · Thu Nov 01 04:00:00 EST 1962 · Zh. Neorgan. Khim.

OSTI ID:4779344

Shevtsova, Z N; Korzina, E N; Korshunov, B G

The interaction between PrCl/sub 3/ and NaCl-KCl is of great interest for the development of treatment methods for ores containing rare earths and for the preparation of metallic Pr by molten bath electrolysis. The co- crystallization method was used for the studies, which involved the determination of cooling curves. The component binaries PrCl/sub 3/KCl and NaCl-KCl were previously investigated. The PrCl/sub 3/- NaCl system was studied under dry HCl atmosphere to prevent the decomposition of the PrCl/sub 3/. It was found to contain a eutectic at 37 mole % PrCl/sub 3/ with a melting point of 488 plus or minus 2 deg C. The ternary system itself was examined in 6 internal sections. The stable K/sub 3/PrCl/sub 6/- NaCl system contained a eutectic at 18.4% PrCl/ sub 3/, 26.4% NaCl and 55.2% KCl (in mole%), with a melting point of 530 plus or minus 2 deg C; at 585 deg C a polymorphic transformation of the compound K/sub 3/ FrCl/sub 6/ takes place. On the basis of the data obtained the phase diagram of the system could be determined: the surface of the liquidus consists of 5 primary crystallization fields, corresponding to the separation of PrCl/sub 3/, NaCl, KCl, K/sub 2/PrCl/sub 5/, and K/sub 3/PrCl/sub 6/ from the melt. (TTT)

• Research Organization: Moscow State Univ.
• NSA Number: NSA-17-003002
• OSTI ID: 4779344
• Journal Information: Zh. Neorgan. Khim., Journal Name: Zh. Neorgan. Khim. Vol. Vol: 7
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

CHEMICAL REACTIONS
CHEMISTRY
CONCENTRATION
CRYSTALLIZATION
DECOMPOSITION
ELECTROLYSIS
ENERGY LEVELS
ERRORS
EUTECTICS
FUSED SALTS
GAMMA RADIATION
HYDROCHLORIC ACID
MEASURED VALUES
MELTING POINTS
ORE PROCESSING
PHASE DIAGRAMS
POTASSIUM CHLORIDES
PRASEODYMIUM
PRASEODYMIUM CHLORIDES
PREPARATION
QUANTITATIVE ANALYSIS
RARE EARTHS
RODS
SCINTILLATION COUNTERS
SODIUM CHLORIDES
SPECTRA
STABILITY
URANIUM 235