Appraisal of the Operation of Horizontal-Stud Cells with the Addition of Lithium Fluoride

The addition of lithium fluoride to normal Hall-Heroult electrolyte (hereafter referred to as lithium electrolyte) effectively reduces the freezing point and improves the electrical conductivity of the electrolyte. Operating procedure for this process, that is, adding lithium fluoride to horizontal stud cells, at an industrial-scale operation, while intensifying current from 55KA to 60KA, is described. Analyses of lithium electrolyte and heat flow determined the optimum operating conditions for such cells. Possible decrease in fluoride emission due to lower operating temperature is also referred.