Add time:08/09/2019         Source:sciencedirect.com

Scandium is one of the most important elements among lanthanides because of its promising applications in solid oxide fuel cells and high strength Al- Sc alloys. There are no primary mine sources for Scandium and the present supply is from stock piles and byproducts. Scarcity of reliable supply and high production costs hinders the use of Scandium in high end technologies. In this report, we discuss the development of a recovery process for scandium from the red mud. A recovery process based on roasting, leaching and selective precipitation is designed from available literature and optimized by lab scale experiments. A detailed economic analysis of the process using Monte Carlo simulations is presented. Uncertainties associated with the operating conditions like commodity prices, market etcis accounted for in this approach. The analysis shows that the developed process is profitable even at the lowest historical price of Sc2O3. The cumulative NPV cost profiles generated correlating the historical prices of different purity Sc2O3 (99 -99.99%) also were positive indicating that the developed process has a large scope in terms of commercial feasibility.

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