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一、露天矿破碎问题的重要性在露天矿生产总费用中,运输费用所占的比重很大。随着开采深度增加。运距会逐渐延长,运费将随之增加。据国外许多矿山的统计,采深在250米以内,运费占开采总费用的25～50％;采深为250～350米者,占开采总费用的50～60％;采深超过400米以上者,运费将达开采总费用的70％以上。因此许多年来,各国都在设法研究新的生产运输工艺、新设备,以便解决矿石成本随着运费增加而增长的问题。破碎问题对每种运输方式都有直接影响。
First, the importance of opencast mining problem In the total cost of open-pit mines, transportation costs account for a large proportion. As mining depth increases. Transport distance will be gradually extended, shipping costs will increase. According to the statistics of many mines abroad, the mining depth is within 250 meters and the freight rate accounts for 25-50% of the total exploitation cost; the mining depth is 250-350 meters, accounting for 50-60% of the total mining cost; the mining depth is over 400 meters , Shipping costs will reach 70% of the total cost of mining. Therefore, for many years, all countries are trying to study new production and transportation technology and new equipment so as to solve the problem of increasing the cost of ore as shipping costs increase. The problem of crushing has a direct impact on each mode of transport.