Method of operating a smelting unit and smelting unit for...

Details Method of operating a smelting unit and smelting unit for... Method of operating a smelting unit and smelting unit for...

F - Mech Eng,Light,Heat,Weapons

27

B

307/20

F27B 9/38 (2006.01) C21C 5/56 (2006.01) F27D 3/00 (2006.01)

Patent

CA 2003156

ABSTRACT Method of operating a smelting unit and smelting unit for that method In a smelting unit comprising an arc furnace and at least one shaft-like charging material preheater which is arranged laterally on the furnace vessel of the arc furnace and the interior of which is connected in a region adjoining its bottom to the interior of the furnace vessel by way of a connecting zone, and in addition burners open in the lower region of the charging material preheater, in a sump mode of operation after the tapping step, of the amount of charging material which is required for the next bath of molten material, a part thereof is charged directly into the furnace vessel in order to reduce the smelting time. That part of the charging material is preheated in a preheating chamber which is connected downstream of the charging material preheater.

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