摘要
在实验室测定了与含氟化钙的冰晶石熔体相平衡的熔融铝中钠和钙的含量。在氟化钙的浓度低于3％时,铝中钙的浓度与钠的浓度之比与氟化钙浓度之间的关系为线性关系。而当氟化钙的浓度高于3％时,这种关系呈现正的偏差。
The contents of Na and Ca, as impurities contained in liquid aluminium which is in equilibrium with molten cryolite containing different amounts of CaF2, were measured.It is revealed that there is a linear relationship between CNa/CCa and CCaF2 when the concentration of CaF2 in molten cryolite reaches a value of 3wt%, and a positive fluctuation will take place if exceeding the value.
关键词
冰晶石
氟化钙
活度
铝
电解
cryolite, calcium fluoride, activity.
