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一、近年来铁矿资源大幅度增长发现了大量富铁矿最近二十年来,世界铁矿储量有了显著的增长.五十年代中期,世界铁矿储量约有1600亿吨,资源总是量约3200亿吨.据不完全统计,目前全世界的铁矿储量已达3460亿吨,资源总量超过了7800亿吨.二十年左右的时间,铁矿储量和资源总量都增加了一倍以上.在新增加的铁矿储量中,估计有三分之二是在新区或边远地区发现或圈定的大型铁矿,约三分之一是靠老矿区深部和外围的扩大.其中,富铁矿(含Fe>50％)增长较快,估计约占70％以上.如六十年代期间澳
First, in recent years, a substantial increase in iron ore resources found a large number of iron ore rich In the last two decades, the world’s iron ore reserves have seen significant growth in the mid-fifties, the world’s iron ore reserves of about 160 billion tons, the total amount of resources About 320 billion tons.According to incomplete statistics, the world’s iron ore reserves have now reached 346 billion tons, the total resources of more than 7800 tons.Twenty years or so, the total iron ore reserves and resources have increased by one More than two-thirds of the additional iron ore reserves are estimated to be large-scale iron mines discovered or delineated in new or remote areas, with about one-third being expanded by deep and extensive old mines, of which, Iron ore (containing Fe> 50%) grew rapidly, accounting for about 70% of the total, as in the 1960s