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近十年来,在大多数金属矿山的坑内矿仓系统中设置了矿石破碎装置。在矿石运到地表之前进行破碎(不需破碎的平炉矿除外)的经济合理性,已无可争辩地为国内外多年的实践所证实。
For the last ten years, ore crushing plants have been installed in pit systems in most metal mines. The economic rationality of crushing (except for open hearth mines without breaking) before they are transported to the surface has been indisputably confirmed by years of practice at home and abroad.