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Removing impurities from secondary alumina


Wet magnetic separation of a partly deagglomerated fines fraction of secondary alumina is an efficient way of separating the impurities P, S, Ti, V, Fe, and Ni from the process stream without sacrificing fluorine reclamation, and without significant loss of Al2O3. Although it is not carried out on an industrial scale today, increased purity requirements or deposition problems may make this process profitable.

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Correspondence to Petter Lossius Dr.ing..

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Lossius, P., Øye, H.A. Removing impurities from secondary alumina. JOM 43, 41–45 (1991). https://doi.org/10.1007/BF03222719

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  • Magnetic Separation
  • Ultrasonic Vibration
  • Electrostatic Precipitator
  • Norwegian Institute
  • Secondary Alumina