一、概况铁矿石固态还原(即直接还原)早在几百年前就已问世,后被高炉炼铁所取代。直到1930年才在德国投产的具有工业规模的回转窑直接还原及同期在瑞典开发的反应罐法。就是熔融还原也有多年的历史。近些年 First, overview Iron ore solid state reduction (ie, direct reduction) as early as hundreds of years ago has been published, was replaced by blast furnace ironmaking. The direct reduction of an industrial-scale rotary kiln that was commissioned in Germany until 1930 and the reaction tank method developed in Sweden over the same period. It is also the history of melting reduction for many years. In recent years