小型有色金属矿床在数量上比大型矿床多得多,其开采的合理性通常决定于是否盈利;只是在个别情况下才决定于对某种金属的需要。小型矿山矿石开采和运至选厂的全部费用,包括生产费用和基建投资折旧。费用的优化是急需解决的重要问题。 Small non-ferrous metal deposits are much larger in number than large ones, and the rationality of their mining generally depends on whether they are profitable or not; in only a few cases they depend on the need for a metal. The full cost of mining and transporting small mines to the beneficiation plant includes production costs and depreciation of capital investment. Cost optimization is an urgent need to solve the important issue.