mill addition of sodium cyanide in the ball mill

Figure 6 Extraction degree of copper from mill tailings at various concentrations of sodium cyanide in the presence of a paramagnetic catalyst 0 10 20 30 40 50 60 70 0 60 120 180 240 300 360 E Zn 2 PLQ 01 gdm3 03 gdm3 05 gdm3 Figure 7 Extraction of zinc from mill tailings at various concentrations of sodium cyanide in the presence of a