铝电解复杂电解质体系电导率研究

Electrical conductivity of complex electrolyte systems for aluminum electrolysis

研究复杂电解质中各种添加剂对电解质导电性的影响规律可为实现铝电解节能提供理论支持。本文研究了复杂电解质体系中添加剂及过热度对其电导率的影响规律,电解质的电导率随着分子比、氟化锂浓度、氟化钾浓度、过热度提高而提高,随着氟化镁浓度、氟化钙浓度、氧化铝浓度提高而降低。根据研究结果拟合了复杂电解质体系电导率与各参数间的关系公式,公式为:㏑κ=1.9548+0.1603CR-0.01835wt%(Al2O3)-0.003743wt%(CaF2)-0.009359wt%(MgF2)+0.02348 wt%(LiF)+0.0105 wt%(KF)-1832.8/T。

he influence of various additives on electrolyte conductivity in complex electrolytes can provide theoretical support for the realization of energy saving in aluminum electrolysis.In this paper,the influence of additives and superheat on the conductivity of complex electrolyte system was studied.The conductivity of electrolyte increased with the increase of molecular ratio,lithium fluoride concentration,potassium fluoride concentration,superheat,and decreased with the increase of magnesium fluoride concentration,calcium fluoride concentration,alumina concentration.According to the results,the formula of the relationship between conductivity and parameters of complex electrolyte system was fitted.The formula was as follows:㏑κ=1.9548+0.1603CR-0.01835wt%(Al2O3)-0.003743 wt%(CaF2)-0.009359wt%(MgF2)+0.02348wt%(L iF)+0.0105 wt%(KF)-1832.8/T.