Process development studies for the recovery of uranium and sodium sulphate from a low-grade dolostone hosted stratabound type uranium ore deposit

Abstract

An innovative hydrometallurgical process flowsheet comprising of ‘oxidative alkaline pressure leaching–counter-current filtration–direct precipitation–reagent regeneration cum recycle’ was developed for effective recovery of the uranium values from a low-grade dolostone hosted stratabound type uranium ore deposit in Southern Cuddapah basin of India. Many challenges inherent in the ore like: lean-tenor (U₃O₈ about 0·04%), absence of discrete uranium phases, distribution of majority of uranium values (about 90% by weight) as ultra-fine dissemination in carbonate matrix and presence of reactive sulphide minerals, were converted into opportunities leading to establishment of a process plant after elaborate laboratory and pilot-plant investigations. This paper discusses the results of the laboratory and pilot-plant investigations carried out for development of the process flowsheet.

Keywords

Uranium Alkaline leaching Carbonate host rock Sodium diuranate

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References

Anon

. 1993. Uranium extraction technology, IAEA Technical Report Series No. 359, IAEA, Vienna.

Anon

. 2009. World Distribution of Uranium Deposits (UDEPO) with Uranium Deposit Classification, 2009 Edition, IAEA-TECDOC-1629, 5–7, Vienna, IAEA.

Anon

. 2012. Uranium 2011: Resources, Production and Demand. A Joint Report by the OECD Nuclear Energy Agency and the International Atomic Energy Agency, Vienna. 485.

Banerjee

. 2011. BARC Newsletter, September–October 2011, 32, 6–9 [online]. Available from: http://www.dae.gov.in.html (accessed on 2012 Feb 28).

Bowell

, Grogana

, Mutton-Ashkennya

, Brougha

, Penman

and Sapsford

. 2011. Geometallurgy of uranium deposits, Miner. Eng., 24, 1305–1313.

Brown

. 2010. The re-emergence of resin-in-pulp with strong base resins as a low cost, technically viable process for the recovery of uranium, Proceedings of 42nd Annual Meeting of the Canadian Mineral Processors, January 19–21, 2010, Paper # 20, Ottawa, ON, Canada.

Chaki

. 2009. An overview of uranium exploration strategy in India, International Symposium on uranium raw material for the nuclear fuel cycle: exploration, mining, production, supply and demand, economics and environmental issues (URAM-2009) June 2009, Vienna, Austria.

Chaki

. 2010. Uranium occurrences and exploration experience in India, in Proceedings of the 3rd International Conference on Uranium, 2010, (eds. Lan

E K

, Rawson

J W

, and Ozberk

), Vol. I, 25–34, Saskatoon, Canada, Metsoc.

Caldeira

, Ciminelli

VST

and Osseo-Asare

. 2010. The role of carbonate ions in pyrite oxidation in aqueous systems, Geochim. Cosmochim. Acta, 74, 1777–1789.

10.

Connelly

. 2013. Current challenges with the processing of uranium ores. Proceedings of ALTA 2013 Uranium – REE Conference, Perth Western Australia. May–June 2013. Published by ALTA Metallurgical Services Publications

11.

Courtaud

, Auger

and Thiry

. 2012. A New Process for Uranium Precipitation. Proc. XXVI Int. ‘Mineral Processing Conference (IMPC 2012)’, 24–28 September, 2012, New Delhi, 977–984.

12.

Dhana Raju

, Roy

and Vasudeva

. 1993. Uranium mineralization in South-western part of Cuddapah basin: a petromineralogical and geochemical study, J. Geol. Soc. India, 42, 135–149.

13.

Edwards

and Oliver

. 2000. Uranium processing: a review of current methods and technology, J. Metals, 2000, 12–20.

14.

Dunn

, Vegenas

and Teo

. 2010. Uranium recovery by continuous ion exchange of alkaline leachate. Available from: http://www.altamet.com.au/wp-content/uploads/2012/12/2010-Uranium-Contents.pdf (accessed on 30 December 2013).

15.

Glen

. 2013. Uranium overview: Precipitation to convertor. Proceedings of ALTA 2013 Uranium REE Conference, Perth Australia, May 2013, Alta Metallurgical Services Publication, Melbourne, Australia, 109–128.

16.

Jain

. 2011. Inevitability of nuclear power in the Asian region, J. Nucl. Power, 24, (3–4), 55–65.

17.

Kakodkar

. 2005. Energy in India for the coming decades. Available from: www.dae.gov.in/iaea/ak-paris0305.doc (accessed on 15 February 2010).

18.

Kakodkar

. 2008. Evolving Indian nuclear power programme: rationale and perspective, Nucl. India, 41, 11–12.

19.

McKay

and Miezitis

. 2001. Australia's uranium resources, geology and development of deposits. In: AGSO-Geoscience Australia, Mineral Resource Report, 1, 184.

20.

McGarvey

and Ungar

. 1981. The influence of resin functional group on the ion exchange recovery of uranium, J. S. Afr. Inst. Mining Metall., 81, (4), 93–100.

21.

Merritt

. 1971. The extractive metallurgy of uranium, Colorado School of Mines Research Institute, Golden Colorado, United States Atomic Energy Commission, Colorado.

22.

Mudd

. 2014. The future of yellow cake: a global assessment of uranium resources and mining, Sci. Total Environ., 472, 590–607.

23.

Norgate

, Haque

and Koltun

. 2013. The impact of uranium ore grade on the greenhouse gas footprint of nuclear power, J Clean Prod. Available: http://dx.doi.org/10·1016/j.jclepro.2013·11·034

24.

Parihar

. 2013. Uranium and thorium resources in India: UNFC system, Proc. Conf. ‘Sustainable Mining and the United Nations Framework Classification (UNFC) UNFC workshop’, New Delhi. 30 October 2013, Ministry of Mines, Government of India.

25.

Panaou

and Bellino

. 2011. Designing of uranium plants. Proceedings of ALTA 2011 Uranium Conference, Perth, Australia. ALTA Metallurgical Services, Melbourne, Australia.

26.

Reddy

LSR

. 2007. Unpublished Internal Report of Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Government of India, (Report No.: AMD/PET/HYD/ODG – 17/2007).

27.

Rodriguez-Navarro

, Doehne

and Sebastian

. 2000. How does sodium sulfate crystallize? Implications for the decay and testing of building materials, Cement Concrete Res., 30, 1527–1534.

28.

Sharma

, Bhattacharya

, Swami

, Tangri

and Mukherji

. 1996. Studies on the kinetics of UO₂ dissolution in carbonate-bicarbonate medium using sodium hypochlorite as oxidant, J. Radioanal. Nucl. Chem. Lett., 214, (3), 223–233.

29.

Sinha

. 2013. IAEA International Ministerial Conference on Nuclear Power in the 21st Century, St. Petersburg, Russia, June 27–29, 2013. Available: www.dae.nic.in (accessed on 30 December 2013).

30.

Taylor

. 2012a. Innovations and trends in uranium ore treatment. Available: http://www.altamet.com.au/wp-content/uploads/2012/12/Innovations-and-Trends-in-Uranium-Ore-Treatment.pdf (accessed on 16 December 2013).

31.

Taylor

. 2012b. Uranium heap leaching gaining popularity. Available from: www.altamet.com.au/conferences/alta-2012 (accessed on 30 December 2013).

32.

Toman

. 2006. Production of yellow cake in branch plant GEAM – Long term experience with alkaline leaching. Presentation at IAEA Technical Meeting on Aerial and Ground geophysical techniques for uranium exploration and advanced mining and milling methods and equipment, conducted at M/s. U.C.I.L. Narwapahar, Jharkhand, India (March, 2006).

33.

Tromans

. 1998a. Temperature and pressure dependent solubility of oxygen in water: a thermodynamic analysis, Hydrometallurgy, 48, 327–342.

34.

Tromans

. 1998b. Oxygen solubility modeling in inorganic solutions: concentration, temperature and pressure effects, Hydrometallurgy, 50, 279–296.

35.

Youltona

and Kinnaird

. 2013. Gangue-reagent interactions during acid leaching of uranium, Miner. Eng., 52, 62–73.

36.

Zhu

, Pranolo

and Cheng

. 2012. Solvent extraction of uranium and its separation from vanadium in alkaline solutions. Proceedings of ALTA 2012 Conference on Uranium, Perth, Australia, May–June 2012. Alta Metallurgical Services, Melbourne, Australia.

37.

Zoller

. 2009. Handbook of detergents, part F: production, surfactant science series, Vol. 142, 435. Boca Raton, CRC Press.