Effect of Copper and Iron Ions on the Sulphidizing Flotation of Copper Oxide in Copper Smelting Slag

Figure 3

Recovery of CuO under different conditions: (a) different pH values (Na₂S 0.156 g/L); (b) different Na₂S concentrations (pH = 10, neither CuSO₄ nor Fe₃Cl addition); (c) different CuSO₄ concentrations (pH = 10, Na₂S 0.156 g/L); (d) different Fe₃Cl concentration (pH = 10, Na₂S 0.156 g/L).

(a)

(b)

(c)

(d)