at 10% bentonite concentration beyond which the apparent viscosity
was significantly increased with significantly decreased copper
recovery. Clay minerals may affect copper flotation through the
modification of pulp rheology. As demonstrated by Bakker et al.
(2009), Shabalala et al. (2011), Patra et al. (2012), the increased
pulp viscosity interfered with the hydrodynamics within flotation
cells and adversely affected mineral flotation