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经测算,截止2007年底全国铁矿尾矿排放总量大致为50亿t,平均铁品位至少在10.35%以上。在不需要大量投资情况下,700元/t的铁精矿价格将是大部分铁矿尾矿回收再选的经济底线;若考虑新建尾矿库(坝)所需的系列费用,预计铁精矿价格在1000元/t之上将是铁矿尾矿回收再选的必要条件。从目前情况来看,单一回收尾矿中的铁元素是没有经济意义的,只有在铁精矿价格超1000元/t之时,铁矿尾矿资源回收再选才具有获取经济利益的可能性。
After calculation, as of the end of 2007 the total amount of iron ore tailings emissions roughly 50 billion t, the average iron grade at least 10.35% or more. The iron ore concentrate price of 700 yuan / t will be the economic bottom line for the recovery and re-election of most iron ore tailings without a large investment. Considering the series of costs required for the new tailings dam (dam), it is expected that the iron concentrate Mine price of 1,000 yuan / t on the iron ore tailings will be the necessary conditions for recycling. From the current situation, the single recovery of tailings in the iron element is not economically meaningful, and only iron concentrate prices over 1000 yuan / t, iron ore tailings recycling re-election only have the possibility of economic benefits .