Abstract

The diagram and the electric conductivity of magnesium electro-bath have a great effect on magnesium electrolysis. They were measured, especially for MgCl2-CaCl2-NaCl.In the electric conductivity measurement, Wheats stone bridge was used. The amplifier and the cell was designed to be accurate. The diagram was made by the thermal-analysis.The results are sa fallows:1) The electric conductivity decreases linearly as temperature.2) The electric conductivity decreases suddenly near the melting-point.3) Calcium chloride have a large effect on the electric conductivity of bath.4) The knick pointn ear the melting point in the electric conductivity-temperature curve has the same temperature as in the thermal analysis.5) A ternary eutectic is formed at 432°C. MgCl2 33%, CaCl2 21%, NaCl 46%.

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