Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Rare earth metal
Patent
1989-03-10
1990-02-06
Stoll, Robert L.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Rare earth metal
423DIG14, 423263, 75121, 210634, 210638, 210639, 210681, 210688, C01F 1700
Patent
active
048987190
ABSTRACT:
A process for recovering the scandium present as a trace constituent in a mixture of iron, manganese and other oxides comprise bringing the scandium into solution along with much of the other base metals, reducing the dissolved iron to the ferrous state, adjusting the pH of the resulting solution to a value of about 2.0 and selectively extracting the scandium with an organic extractant consisting of thenoyltrifluoroacetone dissolved in an aromatic solvent. The scandium values are recovered quantitatively from the organic extractant by treating it with a dilute acid. The process effects a complete separation of the scandium from the base metals resulting in a scandium product of high purity.
REFERENCES:
patent: 2874039 (1959-05-01), Pruvot
patent: 3013859 (1961-12-01), Kuhlman, Jr. et al.
patent: 3146063 (1964-08-01), Moore et al.
patent: 4025602 (1977-05-01), Campbell et al.
patent: 4500494 (1985-02-01), Scher
patent: 4624703 (1986-11-01), Vanderpool et al.
patent: 4626280 (1986-12-01), Vanderpool et al.
patent: 4718996 (1988-01-01), Vanderpool et al.
Langade et al., "Solvent Extraction of Scandium (III)", Anal. Chem. 52, 2031-2033, Nov. 1980.
Sanad et al., "Extraction of Antimony with Tertiary Amines", Talanta, 1967, vol. 14, pp. 659-668 (Pergamon Press).
Selmer-Olsen, "Solvent Extraction of Chlorocomplexes by Triisooctylamine/Carbon Tetrachloride from Hydrochloric Acid Medium", ACTA Chemica Scandinavica 20 (1966), No. 6.
Spitzer, "The Use of Organic Chemicals for the Selective Liquid/Liquid Extraction of Metals", Ingenieursblad, vol. 41, 1972, pp. 418-423.
Lai Wen-Chao
Natansohn Samuel
Rourke William J.
Craig Frances P.
Ericson Ivan L.
GTE Laboratories Incorporated
Stoll Robert L.
LandOfFree
Liquid extraction procedure for the recovery of scandium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid extraction procedure for the recovery of scandium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid extraction procedure for the recovery of scandium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-440866