改善“三率”指标的经济效益计算

Calculation of Economic Benefit by Improving "Threc Ration" Indexcs

文章分析了“三率”各项指标的改善对矿山企业产生的物质效果，并以此物质效果为载体计算其价值量，建立了各种条件下的经济效益的计算公式．

Abstract The paper analysed the innuence of the improvement of hthree ration indexes (such as ore loss ratio,ore dilution ratio and concentrate recorery) on the material effect produced by mine enterprise,and it's value guantity based on the material effect as carrier was calculated,and the calculation formulas of the economic benefit under different condition was derived.