铝电解质(NaF/AlF_3)摩尔比与f(游离AlF_3%)的插值研究

Study on interpolation between the molar ratio( NaF/AlF_3) of aluminum electrolyte and f( free AlF_3%)

应用现代数值逼近中的重要内容诸如n次Iagrangian、Newton差商、差分插值、较好地导出了铝电解质摩尔比与f(游离Al F3%)量相互换算的数学表达式。本文经用文献中的式子作了大量计算值校核、并借助于非参数Wilcoxon符号秩对样本进行统计推断、获得了令人满意的结果、且表达式直观、简单、准确度高、完全能适用于铝电解工程发展的需要。

Important contents in numerical approximation are applied to derive mathematical expression by which the molar ratio （ NaF/AlF3 ） of aluminum electrolyte and f （ free AlF3% ） are converted each other, such as degree n Iagrangian, Newton difference quotient, difference interpolation. After chec- king a large of calculating values by formulas in references and based on statistical inferences of samples by signed rank of nonparametric Wicoxon, satis- factory results are gain, which this expression is visual, simple and high accuracy and can completely fitted for requirements of aluminum reduction pro- ject.