DESULFURIZATION OF GASES IN THE PRODUCTION OF PIG IRON

摘要

The invention relates to a process for producing liquid pig iron (1), in which charge materials (2) containing iron oxide are reduced by means of a reducing gas (5) in a first reduction plant (4) to form a partially reduced first iron product (3) and are melted in a fusion gasifier ( 11) to form the liquid pig iron (1), wherein the spent reducing gas (5) is introduced as export gas (6) into a second reduction plant (7), and wherein a sulfur-containing gas (13) is introduced together with an oxygen-containing gas (9) and/or together with dust (16) into the fusion gasifier ( 11) and or into the reducing gas line (12). The invention further relates to a device for carrying out the process. It is therefore possible for sulfur-containing gas (13) to be used for the production of liquid pig iron (1), or DRI, with a simultaneous increase in productivity, without damaging the environment or adversely affecting the quality of the liquid pig iron (1) or of the DRI.