近年来,出现了大量论述金属矿床露天开采时增加炸药单耗的合理性的文献,其中包括论述露天矿含铁石英岩在崩矿阶段增加炸药单耗使其强度弱化的合理性。这种想法的实质在于,预计在增加炸药单耗时使矿石坚固性受到极大削弱,而增加炸药单耗的附加费用,将因选矿工艺指标的改善(破碎和磨矿能耗下降,磨矿介质消耗减少,精矿产率增加)而在矿石选别处理阶段绰绰有余地得到补偿。难以捉摸的是这样一个因素,即炸药单 In recent years, there has been a great deal of literature on the rationality of increasing the unit consumption of explosives in the open-pit mining of metal deposits. This includes the rationale for discussing the rationality of increasing the unit consumption of explosives in the ore-drawing stage to weaken the strength of the iron-bearing quartzite in open-pit mines. The essence of this idea is that the robustness of the ore is expected to be greatly impaired in increasing the unit cost of explosives while the additional cost of increasing the unit consumption of explosives will be further reduced by the improvement of the beneficiation process indicators (reduction of crushing and grinding energy consumption, Reduced media consumption, increased concentrate yields) and more than enough for the ore sorting process. One of the things that is elusive is the dynamite bill