叙述了世界直接还原铁工艺方法、地区以及主要生产国的生产现状和展望 ,以及MIDREX工艺在直接还原厂中球团矿、块矿使用的比例 ,及对原料的化学成分、物理性能和还原性能的要求。对比了MIDREX工艺和采用粉矿Finmet工艺的生产费用和基建投资 Describes the world direct reduction of iron process methods, production status and prospects of the region and the major producing countries, as well as MIDREX process in the direct reduction plant pellets, lump ore use ratio, and the chemical composition of raw materials, physical properties and reduction performance Request. Contrast the MIDREX process and the use of powder metallurgy Finmet process production costs and capital investment