APPARATUS FOR DIRECTLY REDUCING IRON OXIDE

摘要

Apparatus for the direct reduction of iron oxide utilizing sulfur-containing gas such as coke oven gas for the process gas. Sulfur-containing gas is heated by indirect heat exchange and injected into the furnace above the reduction zone to transfer the sulfur to the hot burden. The apparatus includes an upper bustle zone for prereduction and sulfur transfer, a lower bustle zone for the final reduction of the burden to metallized iron, and means to recycle spent top gas through cooling zone as cooling gas.