【摘要】 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。更多还原

【Abstract】 The estimated total discharge of iron tailings in China reached about 5 billion tons by the end of the 2007,and the average iron content of the tailings at least was above 10.35%.Under no need of heavy capital investment,700 yuan/t is the bottom price of iron concentrate that the most of iron tailings can be reprocessed to recover iron.If the expenses for new tailings reservoir(dam) are considered,the necessary condition of reprocessing iron tailings is that the price of iron concentrate is above 1000 yuan/t.From current situations,it has no economic significance only to recover iron from iron tailings.Only while the price of iron concentrate is above 1000 yuan/t,the reprocessing of iron tailings can achieve economic benefit.更多还原