ELECTRIC FURNACE WITH TILTABLE AND REMOVABLE HEARTH

摘要

1501057 Arc furnace construction T F REESE 1 Sept 1976 36193/76 Heading F4B An electric arc furnace comprises a tiltable base 12, Fig. 1, a hearth 30, Fig. 3, having an outer wall 34 and removably pivoted to the base, a shell 44 and a cover 58, the lining 72, Fig. 3, of the shell resting on the refractory lining of the hearth, so that the shell 44 can be removed, the shell lining collapsed into the hearth, and the hearth tilted to dump the refractory material. The hearth may be removed from the base and inverted to remove its refractory lining, Fig. 3. The hearth includes the pouring spout 26 and slag spout 28 and pivot pins 76 in either side of the pouring spout engage open-topped slots in brackets 80. Connectors 88 engaging lugs 92 on the base are carried by plates 90 at either side of the slag spout 28. Releasable fasteners 54 connect the shell wall to the wall of the hearth. A rope may be passed round the lining utilizing the connectors 88 to collapse it into the hearth when the shell is removed (Fig. 4).