A PROCESS FOR THE DIRECT REDUCTION OF PARTICULATE IRON-CONTAINING MATERIAL AND A PLANT FOR CARRYING OUT THE PROCESS

摘要

Described is a method of directly reducing a particulate iron-containing material, the method calling for reformed gas to be at least partly freed of CO2, fed as the reducing gas to the reduction zone of a fluidized bed and drawn off from the zone as top gas, at least part of the top gas being used again, mixed with reformed gas, in the direct reduction. In order to reduce the number of plant components which come into contact with the reducing gas and to lower the heating costs, at least part of the CH4 and N2 is removed, in addition to CO2, from 50 to 100 % of the reformed gas and 0 to 100 % of the top gas by adsorption, and the tail gas removed by adsorption from the reformed gas and top gas is used for heating purposes.