KCl对镁电解槽分解电压的影响

The influence of KCl on the decomposition voltage in magnesium cells

氯化镁分解电压是镁电解生产过程中的一项重要指标,研究它对于降低槽电压、节能降耗和降低粗镁生产成本,都具有较为现实的意义;氯化钾是配制电解质的主要成分之一,它对于氯化镁的分解电压影响较大,研究氯化钾的加入多少是配制好电解质的关键。本文主要讨论了在MgCl2-KCl二元系和MgCl2-KCl-NaCl三元系电解质中,KCl/MgCl2的分子比对MgCl2活度系数和分解电压的影响。

The decomposition voltage of MgCl2 is a main index during electrolysis of magnesium chloride, the research about it is a significance for reducing cell voltages,energy saving and production costs. KCl is one main components of electrolytes, and it has influence on the decomposition voltage of MgCl2. In this paper,the influences of KCl/MgCl2 on the activity coefficient and decomposition voltage of MgCl2 are discussed in MgCl2 -KCl and MgCl2 -KCl -NaCl electrolyte system.