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.

• 在氟化钙的浓度低于3%25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%25时,这种关系呈现正的偏差。