The effect of sludge formed during electrolysis on the quality of copper powder

Summary An investigation was made of the effect of current density and electrolyte temperature on sludge formation during the electrolytic production of copper powder. With increase in current density, the relative amount of sludge formation increases and its dispersivity decreases. As the temperature rises from 25 to 55° C, the sludge formation rate changes, passing through a maximum.It is shown that, for normal industrial production of copper powder, the sludge does not significantly influence the chemical composition, dispersity or structure of the finished product particles.