Document Type : Research Paper
Authors
Abstract
Extraction of ytterbium from anomaly No.5 of Saghand leach solution using D2EHPA as extractant, kerosene as a diluent, and optimization of the effective parameters were investigated. In addition to uranium and thorium, rare earths elements also exist in Saghand ore. The effect of pH on the extraction of Yb and other existing elements shows that their extractions increase by increasing pH. The extraction of Yb, U, La, Y, Ce and Fe in pH=2 were 99.9, 83, 13.5, 99.8, 8.5 and 27.4%, respectively. The increasing of the A/O ratio decreases the extraction of other elements more than Yb where it resulted in the increasing of the Yb separation. The theoretical number of extraction stages were determined in pH=2 and A/O=9 using McCabe-Thiele diagram. Stripping of the organic phase was also carried out by different concentrations of nitric acid.
Highlights
- 1. R. Lundi, J.R. Wilson, “Rare earth metals find interesting new uses despite lack of engineering data,” Imperial College Press (2002).
- 2. J.B. Hedrick, “Rare earths,” U.S. Geological Survery Minerals Yearbook, 1, 60, 1-60, 16 (1999).
- 3. P. Jones, F. Wall, T. Williams, “Rare earth minerals,” Chapman & Hall Inc (1996).
- 4. J. Lefond, “Industrial minerals and rocks,” Vol. 2, Fifth Edition, American Society of Mining Engineers, New York (1983).
- 5. C.K. Gupta, N. Krishnamurthy, “Extractive metallurgy of rare earths,” CRC Press, (2005).
- 6. K. Memar, “Mineralogy and petrochemistry of a part of saghand area,” Ph.D Thesis University of Bombay, 1-43 (1991).
- 7. C.K. Gupta, T.K. Mukherjee, “Hydrometallurgy in extraction process,” CRC Press (1990).
- 8. م. عبداللهی، س. علمدار میلانی، م.ج. کلینی، م.ر. صمدزاده یزدی، ”استخراج ایتربیم از محیط‌های سولفوریکی با استفاده از استخراج‌کننده‌های آلی مختلف،“ پانزدهمین کنفرانس هسته‌ای، گرگان (1387).
- 9. J. Rydberg, M. Cox, C. Musikas, G. Choppin, “Solvent extraction and practice,” Second Edition, MARCEL DEKKER Inc (2004).
10. T. Sato, “Liquid-liquid extraction of rare-earth elements from aqueous acid solutions by acid organophosphorus compounds,” Hydrometallurgy, Vol. 22, 121-140 (1989).
11. ا. وکیلی‌میرزمانی، ”امکان‌سنجی فرآوری کانه‌های اورانیم و عناصر نادر خاکی به روش لیچینگ در آنومالی 5 ساغند،“ پایان‌نامه کارشناسی ارشد، دانشگاه باهنر کرمان (1383).
12. G.W. Mason, “Process for separation of the rare earths by solvent extraction,” U.S Patent, No. 4016237 (1975).
Keywords
- 1. R. Lundi, J.R. Wilson, “Rare earth metals find interesting new uses despite lack of engineering data,” Imperial College Press (2002).
- 2. J.B. Hedrick, “Rare earths,” U.S. Geological Survery Minerals Yearbook, 1, 60, 1-60, 16 (1999).
- 3. P. Jones, F. Wall, T. Williams, “Rare earth minerals,” Chapman & Hall Inc (1996).
- 4. J. Lefond, “Industrial minerals and rocks,” Vol. 2, Fifth Edition, American Society of Mining Engineers, New York (1983).
- 5. C.K. Gupta, N. Krishnamurthy, “Extractive metallurgy of rare earths,” CRC Press, (2005).
- 6. K. Memar, “Mineralogy and petrochemistry of a part of saghand area,” Ph.D Thesis University of Bombay, 1-43 (1991).
- 7. C.K. Gupta, T.K. Mukherjee, “Hydrometallurgy in extraction process,” CRC Press (1990).
- 8. م. عبداللهی، س. علمدار میلانی، م.ج. کلینی، م.ر. صمدزاده یزدی، ”استخراج ایتربیم از محیط‌های سولفوریکی با استفاده از استخراج‌کننده‌های آلی مختلف،“ پانزدهمین کنفرانس هسته‌ای، گرگان (1387).
- 9. J. Rydberg, M. Cox, C. Musikas, G. Choppin, “Solvent extraction and practice,” Second Edition, MARCEL DEKKER Inc (2004).
10. T. Sato, “Liquid-liquid extraction of rare-earth elements from aqueous acid solutions by acid organophosphorus compounds,” Hydrometallurgy, Vol. 22, 121-140 (1989).
11. ا. وکیلی‌میرزمانی، ”امکان‌سنجی فرآوری کانه‌های اورانیم و عناصر نادر خاکی به روش لیچینگ در آنومالی 5 ساغند،“ پایان‌نامه کارشناسی ارشد، دانشگاه باهنر کرمان (1383).
12. G.W. Mason, “Process for separation of the rare earths by solvent extraction,” U.S Patent, No. 4016237 (1975).
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