序言前报研究了电解温度、电解质组成对镁电解中阳极效应的影响,温度在640～780℃范围内,临界电流密度随温度的增加而增大。在MgCl_2-NaCl-KCl-CaCl_2四元系电解质中,临界电流密度随 MgCl_2浓度的增加而增大。但是在四元系的工业电解质中,通常含有两类氧化物杂质,一类是可溶的,如 B_2O_3、Mn_2O、Cu_2O、BaO、Li_2O 和 PbO 等,一类是不溶的,如 MgO、NiO、ZnO 和 CaO 等。溶在熔体中的氧化物,可以释放出 O~(2-),如在 NaCl— The preamble reported on the electrolysis temperature, electrolyte composition of the anode effect of magnesium electrolysis, the temperature range of 640 ~ 780 ℃, the critical current density increases with increasing temperature. In MgCl_2-NaCl-KCl-CaCl_2 quaternary system electrolyte, the critical current density increases with the increase of MgCl_2 concentration. However, in the quaternary system of industrial electrolytes, there are usually two kinds of oxide impurities, one is soluble, such as B_2O_3, Mn_2O, Cu_2O, BaO, Li_2O and PbO, the other is insoluble, such as MgO, NiO, ZnO and CaO. Oxides dissolved in the melt, can release O ~ (2-), as in the NaCl-