SEPARATION OF IRON FROM RARE-EARTH ELEMENTS

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Collection Czechoslov. Chem. Communs.

DOI:https://doi.org/10.1135/cccc19590198· OSTI ID:4152125

Krepelka, J H; Vetejska, K; Mazacek, J

The possibility was ascertained of a separation of Fe from rare-earth elements (REE) by means of strongly basic anionite OAL (anionite particle size 0.52 to 0.25 mm, column 1 cm in diameter. and holding capacity 20 to 25 ml). In mcdel-study experiments on sorption of FeCl/sub 3/ and chlorides of REE, depending on the concentration of HCI, the anionite-containing column was washed with a solution of HCl (100 ml) of the same concentration as that of the solutions being analyzed; the latter were prepared by dissolving 30 mg of oxides of REE (obtained by fractionation of mona zite concentrate) and 40 rug Fe/sub 2/O/ sub 3/ in 50 ml HCl of different concentration. The analyzed solutions were passed through the anionite column at a rate of 0.5 nfl/minute, and filtrate fractions of 5 ml were taken for analysis. Presence of REE was determined by precipitation with 2% solution NH/sub 4/OH and staining of precipitates with Alizarin S; for quantithtive estiruation the precipitates were calcined and weighed. Fe was determined photometrically with KSCN. It . was found that in the interval of HCl concentration 0.1 to 9 N, no sorption of Ce, La, Pr, Nd, Sm, and Y took place. Ratio of the elution constants shows that separation of Fe from REE by means of anionite OAL can be effected in a medium of approximately 8 N HCl. Under these conditions Fe is quantitatively retained by the anionite, while REE pass in the filtrate. The anion-exchange method is applicable for determination of Fe in monazite concentrate. In such a case Zr as well as Fe undergoes sorption on anionite, but it does not interfere with determination of Fe; Th passes in the filtrate together with REE. On analysis of a number of synthetic samples and of natural minerals, good results were obtained.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-022957
• OSTI ID: 4152125
• Journal Information: Collection Czechoslov. Chem. Communs., Journal Name: Collection Czechoslov. Chem. Communs. Journal Issue: 1 Vol. Vol: 24; ISSN 0010-0765
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADSORPTION
AMMONIUM COMPOUNDS
CERIUM
CHEMICAL REACTIONS
CHEMISTRY
CYANATES
DYES
FILTERS
HYDROCHLORIC ACID
HYDROXIDES
ION EXCHANGE
IRON
IRON CHLORIDES
IRON OXIDES
LANTHANUM
MINERALS
MONAZITES
NEODYMIUM
PHOTOMETRY
POTASSIUM COMPOUNDS
PRASEODYMIUM
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
RARE EARTHS
SEPARATION PROCESSES
SOLUTIONS
SULFUR COMPOUNDS
VELOCITY
YTTRIUM
ZIRCONIUM