Arc furnace roof

摘要

The invention relates to an arc furnace roof. The roof is comprised of a metal cover which is bolt-connected to the furnace shell. Secured to the lower side of the cover is a plurality of shackle hooks, each of said shackle hooks having an anchor bolt hooked therein. The metal cover has a first layer of insulating concrete applied to its lower side and a second layer of refractory concrete applied to the hard first layer of insulating concrete, the two layers of insulating and refractory concrete, respectively, embedding the shackle hooks and anchor bolts.