TY - JOUR
T1 - Copper refining electrolysis at high current densities
AU - Gürmen, Sebahattin
AU - Orhan, Gökhan
AU - Arslan, Cüneyt
AU - Timur, Servet
PY - 2004/7
Y1 - 2004/7
N2 - In this study, the possibility of utilizing high current densities in copper refining electrolysis was investigated in relation to the cell design along with the surface characteristics of cathode material, and the changes observed in cell potential depending on the working conditions. Two groups of experiments were conducted. The first series of copper refining electrolyses were carried out without any additives to the bath whereas in the second series, the effect of glue, thiourea, and chloride additions to the bath on cathodic copper was examined. Electrolysis conditions, in accordance with industrial practice, kept constant in both sets of experiments and were as follows: 45 g Cu 2+/L, 150 g H2SO4/L, 55°C, electrolyte circulation of 15-20 L/min, anode dimensions of 78×74×4.5 mm, copper cathode of 47×85×0.1 mm, current density of 700 A/m2, and the aforesaid additives. Lab-scale high current density copper refining electrolysis was carried out in a, specially designed cell with a unique electrolyte feeding system and small amount of additives to the bath, resulting in considerably high current efficiencies (≈99%).
AB - In this study, the possibility of utilizing high current densities in copper refining electrolysis was investigated in relation to the cell design along with the surface characteristics of cathode material, and the changes observed in cell potential depending on the working conditions. Two groups of experiments were conducted. The first series of copper refining electrolyses were carried out without any additives to the bath whereas in the second series, the effect of glue, thiourea, and chloride additions to the bath on cathodic copper was examined. Electrolysis conditions, in accordance with industrial practice, kept constant in both sets of experiments and were as follows: 45 g Cu 2+/L, 150 g H2SO4/L, 55°C, electrolyte circulation of 15-20 L/min, anode dimensions of 78×74×4.5 mm, copper cathode of 47×85×0.1 mm, current density of 700 A/m2, and the aforesaid additives. Lab-scale high current density copper refining electrolysis was carried out in a, specially designed cell with a unique electrolyte feeding system and small amount of additives to the bath, resulting in considerably high current efficiencies (≈99%).
KW - Copper refining electrolysis
KW - High current densities
KW - Surface characteristics
UR - http://www.scopus.com/inward/record.url?scp=23444444179&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:23444444179
SN - 0254-4121
VL - 54
SP - 40
EP - 44
JO - Bulletin of the Technical University of Istanbul
JF - Bulletin of the Technical University of Istanbul
IS - 2
ER -