中国国土资源经济
中國國土資源經濟
중국국토자원경제
NATURAL RESOURSE ECONOMICS OF CHINA
2013年
1期
10-16
,共7页
级差品位指标制%影子价格%初等丰度资源%平均品位%边界品位
級差品位指標製%影子價格%初等豐度資源%平均品位%邊界品位
급차품위지표제%영자개격%초등봉도자원%평균품위%변계품위
differential grade index system%shadow price%elementary abundance resources%average grade%cut-off grade
品位指标的作用是：在利用初等丰度矿量的产品成本相当于目标市场价格的前提下，控制其有用成分含量的下限，并以此为准来拓宽矿体。当矿量的规模足够大时，品位指标随开发程度的上升而下降，因为处在各个开发阶段因而具有相应级别的矿量需要进一步投入的开发费用呈下降的趋势，它们各自的品位指标也依次递减。
品位指標的作用是：在利用初等豐度礦量的產品成本相噹于目標市場價格的前提下，控製其有用成分含量的下限，併以此為準來拓寬礦體。噹礦量的規模足夠大時，品位指標隨開髮程度的上升而下降，因為處在各箇開髮階段因而具有相應級彆的礦量需要進一步投入的開髮費用呈下降的趨勢，它們各自的品位指標也依次遞減。
품위지표적작용시：재이용초등봉도광량적산품성본상당우목표시장개격적전제하，공제기유용성분함량적하한，병이차위준래탁관광체。당광량적규모족구대시，품위지표수개발정도적상승이하강，인위처재각개개발계단인이구유상응급별적광량수요진일보투입적개발비용정하강적추세，타문각자적품위지표야의차체감。
This paper introduces the functions of grade index using the production costs of elementary abundance ore quantity equivalent to target market price to control the lower limit of useful component content and with this accurate to broaden the ore body.When the size of the ore is big enough, the grade index will decrease along with the rise of development degree. As at various stages of development, the development costs for further investment with regard to corresponding level of ore will be a downward trend with their grade index decreased in turn.
