A combination of fundamental work in the laboratory and experience from measurements on industrial cells has resulted in a good understanding of fundamental problems as well as the significance of various test methods. Typical problems may be linked to electrode processes where increased understanding is obtained through experimental techniques like voltametry and impedance measurements. Also the significances of metal and bath flow, bath-metal wave height, alumina distribution, anodic and cathodic overvoltage, and current efficiency (gas analysis), have been studied. Other activities are analysis of anode effect gases (CF₄, C₂F₆) and sulphurous gases (SO₂, COS).

Physical modelling of proprietary electrolysis cells has also been done in cooperation with the metal producers. We are also equipped to take part in development and testing of inert electrodes, i.e. ceramic wettable cathodes and oxygen-evolving anodes.

Photo: Melinda Gaal

Photo: Melinda Gaal