RedMud: A Secondary Resource for Rare Earth Elements

Abhilash, and Sinha, Shivendra and Meshram, Pratima and Pandey, B D and Behera, P K and Satapathy, B K (2014) RedMud: A Secondary Resource for Rare Earth Elements. In: International Bauxite, Alumina and Aluminium Symposium-IBAAS 2014, 27-29th November 2014, Vishakapatnam, India.

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Red mud is a solid waste of the Bayer process and is considered to be a harmful waste when it is stock piled in huge amounts. By the year of 2015, the alumina industry is estimated to produce 4 billion tons red mud worldwide at its current production rate. In India, alumina plants have 1.692 million tons of annual capacity with aluminum metal production of 0.6 million ton per annum and generate about 2 million tons of red mud every year. Disposal of red mud brings an environmental risk taking into consideration of the huge quantity. On the other hand, scattered efforts have been put worldwide for extraction of signicant amounts of REE’s such as La, Ce, Y, Sc. It is difficult to directly recover REE’s from red mud due to its low levels and presence of major minerals of Fe, Al, Ti. This article elicits a comprehensive review on the presence of REE’s in red mud, their mineralogical characterization and its association. Also would be presented the recent first of its kind results on extraction of these rare earth elements from red mud.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:red mud; rare earths; leaching; selective precipitation; La Ce Sc.
Divisions:Metal Extraction and Forming
ID Code:7145
Deposited By:Mrs Pratima Meshram
Deposited On:11 Dec 2015 10:25
Last Modified:11 Dec 2015 10:25

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