On preparation of aluminum-magnesium alloys form magnesium oxide

In this paper, aluminum-magnesium alloys were prepared from magnesium oxide. In the whole test, liquid Al as cathode, and graphite as anode, CO and CO2 were released instead of a great number of toxic gases which were produced in traditional magnesium industry. It was proven that the content of Mg in Al can reach 1 similar to 10%(w), and the longer electrolysis time, the higher content of Mg in Al, and the content of Mg in alloys can be controlled by electrolysis time.2%(w) solubility of MgO in electrolysis can be reached if KCl was fed into electrolyte. CaF2 can reduce molting point, while viscosity was increased. 20%(w)MgF2-30%(w)LiF-50%(w)KCl as electrolysis, the best current efficiency was 74% during the first 105 minutes, then the current efficiency following the time of electrolysis, was reduced sharply, even below 40% after three hours.