(南方冶金學(xué)院經(jīng)濟(jì)管理系， 贛州 341000)
摘 要: 為了克服在低品位礦石利用的研究中現(xiàn)行方法只以企業(yè)效益為目的的局限性， 試圖建立起一套以國民經(jīng)濟(jì)整體效益優(yōu)化為目標(biāo)的系統(tǒng)的分析方法，研究中運(yùn)用了費(fèi)用效益分析技術(shù)并輔之以半投入產(chǎn)出法、增量分析法和動(dòng)態(tài)經(jīng)濟(jì)分析法。在以露天開采作業(yè)為對象的基礎(chǔ)上，提出了三個(gè)臨界品位計(jì)算的數(shù)學(xué)模型(這些模型很容易擴(kuò)展到地下開采的情形之中)，最后給出了一個(gè)計(jì)算實(shí)例。
關(guān)鍵字: 邊際品位 露天礦 經(jīng)濟(jì)效率分析
（Department of Management,The South Institute of Metallurgy, Ganzhou 341000）
Abstract:In order to overcome the limits of current approaches which aim at the maximization of corporate profits in the analysis of utilizing low-grade ores, a systematic analytical methodology for economic efficiency analysis was established, which aimed at the optimum allocation of national resources, utilizing cost benefit analysis and assisted by semi-imput-output analysis, in cremental analysis and dynamic economic analysis. Three mathematical models for critical grade calculations were presented based on openpit operations and they may be easily extended to underground mining. Finally, a working example was given.
Key words: cut-off grade openpit economic efficiency analysis
