Overview On Extraction and Separation of Rare Earth Elements from Red Mud: Focus on Scandium

Akcil, Ata and Akhmadiyeva, Nazym and Abdulvaliyev, Rinat and Abhilash, and Meshram, Pratima (2018) Overview On Extraction and Separation of Rare Earth Elements from Red Mud: Focus on Scandium. Mineral Processing and Extractive Metallurgy Review, 39(3) (IF-1.219). pp. 145-151.

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The article provides an overview of the methods used for processing of red mud to extract rare earth elements (REEs). Red mud is a toxic and highly alkaline waste. Several methods have been adopted and been practiced all over the world for the processing of red mud. Complex processing of red mud is cost-effective since red mud contains elements such as iron, aluminum, titanium, calcium, and rare earth metals. It has been observed that the acid leaching of red mud can almost completely recover the rare earth elements in the solution with various individual techniques and also a combination of them. Therefore, the choice of extraction method depends on the form in which the element occurs in the solution. However, relatively low concentrations of rare earth in the solution and significant amounts of impurities increase the cost of getting the final commercial products. To ensure the cost-effectiveness of the process involving rare earth's extraction from red mud, it is necessary to increase their content by several times. This article presents the various studies that have been carried out in these aspects and the possibility of making this resource a sustainable one for REE extraction with a special focus on scandium replenishment.

Item Type:Article
Official URL/DOI:http://10.1080/08827508.2017.1288116
Uncontrolled Keywords:Aluminum; acid leaching; rare earth elements; red mud; scandium; separation,Bayer process; by-products; recovery; vanadium; gallium; metals; iron
Divisions:Mineral Processing
ID Code:7823
Deposited By:Sahu A K
Deposited On:22 Jun 2018 17:21
Last Modified:22 Jun 2018 17:21
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