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菱镁矿通常含有的3％左右的CaO,在氯化过程中几乎全部变为CaCl_2进入MgCl_2熔体。因此电解这种MgCl_2熔体时,难于降低电解质中CaCl_2的含量。而采用NaCl/CaCl_2=1.0左右的MgCl_2-KCl-NaCl-CaCl_2四元系
Magnesite usually contains about 3% of CaO, almost all in the chlorination process into CaCl_2 into the MgCl_2 melt. Therefore, electrolysis of this MgCl 2 melt, it is difficult to reduce the content of CaCl 2 in the electrolyte. While using NaCl / CaCl 2 = 1.0 about MgCl_2-KCl-NaCl-CaCl_2 quaternary system