|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Reducing Cathode Voltage Drop and Reducing Peak Current Density by Use of Cathode Nails across the Carbon to Cast Iron Interface
||Will Berends, Stephen Haley
|On-Site Speaker (Planned)
The solidification shrinkage of cast iron between the collector bar and carbon slot surfaces of a cathode assembly introduces low contact pressure and high electrical contact resistance, particularly at the top of the cathode slot. The use of steel nails to bridge the cast iron shrinkage gap lowers the contact resistance significantly. Recent laboratory testing of varying densities and diameters of nails in the cathode assembly demonstrates the reduction of resistance that is possible through the top of the cathode slot, and the corresponding reduction of resistance through the cathode. The selective use of cathode nails towards the centre of the collector bar is modeled to demonstrate the potential of improved current distribution with reduced peak current density.
||Planned: Light Metals