PREDICTION OF SPECIES DISTRIBUTION AT SPHALERITE WATER INTERFACE

The type and concentration of species present on the surface of sphale rite as a function of pH both in the presence and absence of ferrous i ons were predicted from zeta potential measurements using a model of t he electrical double layer. A qualitative description is given of the method which involves simultaneously solving surface and solution equi libria including charge and mass balances. The significance of the spe cies in terms of flotation is discussed.