An investigation was carried out on the DRI production route in shaft furnace by using COREX off gas modified into reducing gas,and the effect of the process on the composition of reducing gas and the quality of DRI as well.

• 研究了把COREX尾气改质成还原煤气，并采用竖炉法生产海绵铁的工艺流程以及该工艺对还原气和海绵铁质量的影响。