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- W3001816358 abstract "Scandium is a rare and expensive metal that is in increasing demand because of its unique properties. Laterite ore is known to contain scandium in appreciable amounts. In this study, a two-stage process called “acid roasting–water leaching” was developed to extract scandium from laterite ore with minimal co-extraction of iron. In this process, the ore was mixed with concentrated sulfuric acid (98 wt%) and roasted in a furnace at or above 600 °C. The roasted ore was then leached in water at ambient conditions. During acid roasting, Fe2(SO4)3 is decomposed to Fe2O3, which is insoluble in water, and thus it can be separated during the leaching process. A fractional factorial design methodology was utilized to investigate the effect of various operating parameters during the roasting and leaching processes and to optimize the processes. After optimization, 80% of scandium was recovered with less than 15% co-extraction of iron." @default.
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- W3001816358 date "2020-01-01" @default.
- W3001816358 modified "2023-09-25" @default.
- W3001816358 title "Selective Recovery of Scandium from Nickel Laterite Ore by Acid Roasting–Water Leaching" @default.
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- W3001816358 doi "https://doi.org/10.1007/978-3-030-36758-9_8" @default.
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