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在需要将矿石磨碎到细小粒度以便满足选别要求的金属矿山中，爆破所产生的过量细粒一般不认为是个问题。这些矿山应该根据采矿和选矿两者后续工序的费用来选择单位炸药的消耗量一在爆破中改善爆破块度不仅可以降低破碎和磨矿的工作负荷，而且可以提高矿石的装载速率和降低维护
In metal mines where the ore needs to be ground to fine grain size to meet the sorting requirements, the excess fine particles produced by blasting are generally not considered to be a problem. These mines should choose unit explosives consumption based on the cost of follow-up operations for both mining and beneficiation-improving blasting fragmentation during blasting would not only reduce the workload of crushing and grinding but would also increase ore loading rates and reduce maintenance