Improving Characterization of Low Grade Diasporic Bauxite to be Utilize in Jajarm Alumina Plant

  • Mohammadtaghi Shadloo
  • Mohammad Zarbayani
  • Esmaeil Jorjani
  • Mojtaba Aram
Part of the The Minerals, Metals & Materials Series book series (MMMS)


To increase the proportion of lower grade bauxite in the utilized feed and also possibility of increasing A/S ratio in the plant feed (4.66), some investigations on improving A/S ratio of Elburz Bauxite, especially lower grade ones, by gravitational method and flotation has been carried out. To evaluate heavy media separation, using heavy liquids with different specific gravities between 2.8–3.4 (g/cm3) on various size fractions of this bauxite with initial A/S ratio between 1.3–8.5, resulted that a special specific gravity can produce the concentrates (in sunk fractions) with the A/S ratios and productivities which can economically be used as plant feed. Pilot plant tests also carried out on a 25t sample of Bauxite with a A/S ratio of 2.0 and concentrate A/S and recovery in DMS tests were 3.30 and >40%, respectively.


Elburz Bauxite Jajarm Alumina plant Diaspore Aluminosilicate Heavy liquid Dense Media System 


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Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  • Mohammadtaghi Shadloo
    • 1
  • Mohammad Zarbayani
    • 2
  • Esmaeil Jorjani
    • 3
  • Mojtaba Aram
    • 4
  1. 1.Jajarm Alumina PlantJajarmIran
  2. 2.General mechanics CompanyBabolIran
  3. 3.Science and Research BranchIslamic Azad UniversityTehranIran
  4. 4.Mineral Processing DivisionsIMPRC (Iran Mineral Processing Research Center)KarajIran

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