绿色矿冶

Graphitized cathode, high conductive steel rod and phosphorus pig iron casting technology have been gradually applied in electrolytic production and achieved certain results. In this paper, the advantages of graphitized cathode and high conductive steel bar, as well as the steps and key points of phosphorus pig iron pouring were introduced. Based on the production practice, the economic indexes such as assembly voltage drop, furnace bottom pressure drop, voltage and current efficiency after start-up of cathode electrolytic cell assembled by graphitized cathode + high conductive steel bar + phosphorus pig iron casting and cathode electrolytic cell assembled by semi-graphitic cathode + ordinary steel bar + paste tamping were compared. The results show that the cathode structure assembled by graphitized cathode + high conductive steel rod + phosphorus pig iron casting can not only effectively reduce the iron-carbon voltage drop between the cathode carbon block and the steel rod, but also improve the current efficiency, reduce the power consumption and improve the stability of the electrolytic cell operation, which has a good effect of energy saving and consumption reduction.