The feed ore was prepared to a P80 of 90 microns by wet milling at 60% w/w solids in a laboratory rod mill. The ground sample was transferred to a 5 L bottom driven batch flotation cell, and the
required amount of tap water was added to the system (25% w/w solid ratio). The measured pH of the flotation pulp was between 8.4 and 8.8. Brisbane tap water was used in the flotation experiments.