Mineral Impurities, Arsenic and Antimony Removal

Core has worked on the following recent projects:

• Testwork and process engineering for the Toowong Process^TM for the removal of arsenic and antimony from multiple copper concentrates.
• Testwork, flowsheet design and engineering support for an antimony metal production plant (Russia).
• Testwork and recommissioning of an antimony process plant, along with antimony recovery from a tailings resource (South Africa).
• Testwork and process design for removing fluorine from a copper/gold concentrate (Australia).
• Electrowinning testwork, process modelling and design for removing antimony from gold (Australia).
• Testwork for removing antimony and bismuth from electrowinning tankhouse liquors using SX, IX and precipitation (Australia).

Core’s has various technologies for removing impurities:

• Toowong Process^TM for arsenic and antimony removal for copper/gold ores.
• Albion Process^TM technology for arsenopyrite removal from base metal concentrates.
• Novel ion exchange technology for the removal of impurities for example, antimony and bismuth from copper electrolyte, or earth alkali (Ca, Mg) removal from lithium solutions.

Core’s metallurgical testwork capabilities for impurity removal include:

• Comminution breakage testing.
• Beneficiation including cyclone separation.
• Flotation.
• Dewatering including thickening and filtration.
• Toowong Process^TM.
• Pressure Oxidation and Leaching.
• Ultrafine Grinding and Albion Process^TM Testing.
• Roasting.
• Crystallisation and precipitation.
• Electrowinning of antimony.