Methods for producing steel from iron sponge in electric furnaces

摘要

A method is provided for producing steel in an economically acceptable fashion from iron sponge with less than 66% Fe and with high acid slag formers. This is achieved by first determining the acid slag forming composition of the iron sponge, and, thereafter, lining an electro-slag-resistance furnace with a lining compatible with the iron sponge composition. Then, the iron sponge is charged to the furnace and the liquid metal formed is withdrawn to a conventional arc furnace, for example, for further processing.