Hydrometallurgy – Metalloids

OMC has fostered a highly skilled team specialising in the field of hydrometallurgy. This group is lead by a world renowned Hydrometallurgist with extensive operating experience in projects spanning the globe

mineral processing
  • Often occurring in conjunction with value metals eg Cu, Ni, PGE etc
  • Pb, Bi, As, Sb, Se, Te, et

Leaching processes

  • pressure oxidation
  • pressure metathesis
  • alkali sulphide leaching
  • pressure nitrogen process
  • pressure alkali leaching


  • often immobilised to satisfy legislation
  • selenium and tellurium recovery using precipitation and reduction processes

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