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每年用于金属冶炼的原料需求量,一多半靠铁矿石来满足。从地下开采并为冶炼工序准备铁矿石,需要大量的投资。因此,仅在高炉中把铁从氧化物还原为金属铁并排除废石,每吨生铁需消耗焦碳400～500公斤,在日常费用增加15～20卢布情况下,每吨生铁的总费用达到50～60卢布。所以,在金属冶炼部门寻找先进工艺,特别是发展无焦炼钢给以极大重视。目前,每年钢产量的1%是用该法冶炼的。但是,这种用天然气或固体燃料使铁矿原料金属化
The annual demand for raw materials for metal smelting, more than half by iron ore to meet. Mining from the ground and preparing iron ore for the smelting process requires substantial investment. Therefore, only the iron in the blast furnace is reduced from oxides to metallic iron and exclusion of waste rock, which consumes 400 to 500 kg of coke per ton of pig iron and the total cost per ton of pig iron reaches 15 to 20 rubles per day 50 ~ 60 rubles. Therefore, looking for advanced technology in the metal smelting sector, especially the development of non-coke to pay great attention. At present, 1% of the annual steel output is smelted by this method. However, this iron ore feedstock is metallized with natural gas or solid fuels