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综合利用矿产资源十分重要。一些稀散元素,如铋、钻、铼等大都通过综合回收来解决。本文试图在矿石综合利用时,通过多元回归分析查明物质间的依存关系来计算伴生元素储量。逐步回归是考察和研究各元素间联系密切程度的一种数学分析方法,参加回归方程的几个变量中,有些因子表面看来与Y(变量)的相关性很密切,但几个变量合起来逐步回归时因子的变化在Y的回归方程中意义不大。变量间本来有着相关联系,但在回归时它对Y的作用却被其他因子所代替,若留在回归方程中既增加计算的上麻烦,又增加回归方程的不稳
Comprehensive utilization of mineral resources is very important. Some scattered elements, such as bismuth, diamond, rhenium and other mostly through comprehensive recovery to solve. This paper attempts to calculate the amount of associated elements reserves by comprehensive regression analysis of the dependence of substances on the comprehensive utilization of ores. Stepwise regression is a mathematical analysis method that examines and studies the closeness between elements. Among the variables involved in the regression equation, some of the factors appear to be closely related to Y (variables), but several variables are combined Stepwise regression factor changes in the Y’s regression equation is of little significance. However, the function of Y is replaced by other factors at the time of regression. If it remains in the regression equation, it will not only increase the computational burden but also increase the instability of the regression equation