Electrolysis test of 1.35kA drained cathode reduction cell with TiB_2-coated cathode

For a 1.35kA new-type drained cathode reduction cell,detailed operations of cell building,packing,baking,starting-up and normal operations were presented.Cathode inclination angle was 10°.TiB_2-coated cathode was adopted.The cell was drily built,carbon-particulate baked and drily started up.All the operations of feeding,tapping and voltage adjustment were almost the same as those of commercial cells.After 100h of continuous electrolysis,it is found that the cell performs rather steadily.Cell noise is about 9mV and the cell performs exactly like industrial cell.Based on metal production and leftover,current efficiency is not lower than 86% which is approaching that of commercial cells.TiB_2 coating is firm without any damage and hence performs good protection for carbon cathode.The dissolution speed of TiB_2 into electrolyte is about 1.0g/(h·m~2).Test results not only verify the theoretic analysis beforehand,but also prove the feasibility of such kind of cell structure.