• Upgrading of PGM-rich leach residue by high pressure caustic leaching 

      Mwewa, Brian (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: There is a lack of clear understanding of the rate of selenium (Se), arsenic (As) and sulphur (S) dissolution during caustic (NaOH) batch leaching of PGM-rich leach residue in the presence of oxygen. This ...