Rate of Rare Earths Leaching in HCl, H2SO4 and HNO3

Meor Yusoff Meor Sulaiman

doi:10.4028/www.scientific.net/AMR.795.1

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Rate of Rare Earths Leaching in HCl, H₂SO₄ and HNO₃
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 795Rate of Rare Earths Leaching in HCl, H2SO4 and...

Rate of Rare Earths Leaching in HCl, H₂SO₄ and HNO₃

Abstract:

Leaching plays an important role in the recovery of rare earth elements. A study on optimizing the relevant parameters such agitation, leaching time and temperature in the dissolution of these elements in HCl, H₂SO₄ and HNO₃ acids were carried out. The recovery of the rare earths is much depended upon the type of acid used in the leaching system. The H₂SO₄ system shows the highest leached with a rate of 82% while the leaching rate recorded for HCl and HNO₃ system were lower at 67% and 59% respectively. Comparative rate of leaching study was also done on the light and heavy rare earths for the three different acid leaching systems and the result shows that the light group has a better rate of leaching than the heavy group.

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Advanced Materials Research (Volume 795)

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1-4

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https://doi.org/10.4028/www.scientific.net/AMR.795.1

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September 2013

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Meor Yusoff Meor Sulaiman

Keywords:

Heavy, Leaching, Light, Optimum Parameters, Rare Earth

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