一、世界直接还原铁发展现状1770年,第一个直接还原铁专利在英国诞生。随后又有众多直接还原方案相继问世,但是绝大多数没有实用价值,没有实现工业化。瑞典于1932年开发的WIBERG法是第一个实现工业化的竖炉直接还原流程,其还原气是通过焦炭气化的方法制取的。1957年墨西哥希尔 First, the status quo of the world’s direct reduced iron In 1770, the first direct reduced iron patent was born in the United Kingdom. Then there are many direct reduction programs come out one after another, but the vast majority have no practical value, did not achieve industrialization. The WIBERG method developed by Sweden in 1932 was the first industrial direct shaft furnace direct reduction process and the reduction gas was produced by coke gasification. 1957 Mexican Hill