低品位铁矿资源开发经济性分析

Economic Analysis of the Exploitation of Low-grade Iron Ore Resources

通过引入经济品位等概念,从量上界定了低品位铁矿资源的具体范畴;以盈亏平衡为基点,导出了计算低品位矿产资源开发利用的临界品位的经济分析原理。在广泛收集相关参数及计算的基础上,认为:现阶段铁精矿价格为600元/t时,无论是露天开采还是地下开采,低品位铁矿资源开发都处于不经济状态;只有铁精矿价格超出600元/t时,低品位铁矿资源才逐步具备开发利用的经济可行性。在铁精矿价格达1 000元/t时,低品位铁矿资源普遍具有开发利用的经济可行性。

The concepts such as economic grade was introduced to define quantitatively the specific scope of low grade iron ore resources and based on the breakeven point, the principle of the economic analysis for the calculation of critical grade in the exploitation and utilization of low grade mineral resources was deduced. Based on the widely collected relevant parameters and the calculations, it is held that when the price of iron concentrate is 600 yuan/t, the exploitation of tow grade iron ore resources either by open-pit mining or by underground mining will not be economic and only when the price of iron concentrate exceeds 600 yuan/t, low grade iron ore resources will gradually have the economic feasibility of exploitation and utilization. When the price of iron concentrate exceeds 1000 yuan/t, low grade iron ore resources will generally have the economic feasibility of exploitation and utilization.