METHOD FOR OPERATING A BLAST FURNACE

摘要

In a method for operating a blast furnace, the primary supply of reductant and heat is an hydrogen reducing blast. Oxygen or water vapor is injected into the blast furnace to control temperature. Coke is used to provide appropriate gas channels and carburization. Coke use rate can be reduced to less than 10 % of that of conventional blast furnace operation. A conventional blast furnace may be converted to this method with minor modification.