NOUFERROUS METALLURGICAL EQUIPMENT

An experimental study is carried out for the chlorination leaching of low-nickel matte. The effect of initial acidity, potential and initial copper ion concentration on the leaching rate of Ni, Cu, Co and precious metal elements in the low-nickel matte is studied. The results show that under such leaching conditions as initial H⁺ concentration 0.5mol/L, initial Cu²⁺ concentration 5g/L, leaching potential 450~460mV and leaching duration 2h, the leaching rate of Ni, Cu, Fe and Co can reach above 98%, Ag leaching rate is more than 95% and Au leaching rate is appr. 5%; no Pt and Pd are leached out.