Core has carried out numerous bench and pilot scale test programmes relating to gold recovery processes. These have included beneficiation processes via flotation, gravity concentration, sulphide oxidation processes (pressure leaching, bacterial leaching, Albion Process), and cyanide leaching of oxidised concentrates or free milling ores.

Selected project experience:

Lihir Future Gold Ore Testing, Newcrest Mining Limited, Papua New Guinea
Romaltyn Tailings Retreatment Project, Romaltyn Mining, Romania
Gold/PGM Recovery Testwork, Moreton Gold, Australia
Certej Refractory Gold Testwork, European Goldfields, Romania
Wafi Gold Project, Morobe Mining Joint Venture, Papua New Guinea

Capabilities include:

  • Cyanide leach testing at bench and pilot scale using tank reactors ranging from 2 to 500 L capacity in batch or continuous flow mode
  • Rolling bottle leach tests using 2 or 5 L jars with continuous or intermittent agitation
  • Column leach testing equipment featuring 150 to 300 mm ID columns allowing up to 6 m ore height
  • Diagnostic leach tests to evaluate gold – mineral associations
  • Amalgamation of gravity concentrates for evaluation of liberated native gold component
  • Full cyanide detox testwork
  • Preg. robbing tests
  • Carbon loading kinetics tests
  • Oxygen uptake rate test
  • Gravity Recoverable Gold (GRG) test
  • ILR / Acacia reactor simulation tests

Equipment and facilities available include:

  • Batch CIP and CIL agitated leach stations
  • Bottle roll apparatus
  • Heap leaching columns
  • Gravity concentration equipment
  • Carbon activity testing equipment
  • Albion Process equipment (ultrafine grinding mills and atmospheric reactors)