Abstract: A channel type induction furnace with a furnace floor that is inclined downwards from an operative rear of the furnace hearth towards an opposing operative front of the hearth, with a wall at the front comprising a bottom section and a top section, with the bottom section extending further into the hearth than the top section, and the bottom section terminating in an upper edge in abutment with the top section, with a down-passage to an induction heater, located proximate the front wall, having an inlet in the floor at a location proximate the base of the front wall and up passage(s) having an outlet in the floor at a location in abutment with the base of the bottom section and with the bottom section being provided with a vertical slot extending upwards above the or each up-passage through it and opening onto the upper edge of the bottom section.

Abstract: Disclosed is a channel type induction furnace (50) provided with a furnace floor (71) that is inclined downwards from an operative rear of the furnace hearth (50) towards an opposing operative front of the hearth (50), with a wall (73A) at the front of hearth (50) comprising a bottom section (76) and a top section (77), with the front wall bottom section (76) extending further into the hearth (50) than the front wall top section (77), and the front wall bottom section (76) terminating in an upper edge (78) in abutment with the front wall top section (77), with a down-passage (9) to an induction heater (79), located proximate the front wall (73A), having an inlet in the floor (71) at a location proximate the base of the front wall (73A) and the or each up-passage (54A, 54B) having an outlet in the floor (71) at a location in abutment with the base of the front wall bottom section (76) and with the front wall bottom section (76) being provided with a vertical slot (59A, 59B) extending upwards above the or each

Abstract: The invention comprises a double loop channel type induction furnace of which the floor has a base on a first side of its hearth and a ramp which rises from the base to terminate in a plateau above the passages at a location distal from the first side. The ramp and plateau extends at least partly between opposing end walls of the furnace, and the plateau includes a trench which extends at least partly between opposing ends of the plateau. The trench is in fluid communication with the passages and the bottom of the trench is located in a plane higher than the plane in which the furnace floor is located. The base of the furnace floor is in fluid communication with the central passage by means of a floor passage that extends from the base of the floor to the central passage through the ramp below the trench.

Abstract: An induction-heated furnace having a shell with at least a portion lined with refractory material having walls and a floor. At least one induction heater is mounted to the floor of the furnace refractory material that communicates with the interior of the furnace through a throat. The throat length is substantially longer than the throat length of the induction heater to aid the distribution of molten metal in the furnace.

Abstract: An induction-heated furnace is disclosed. The furnace comprises a shell lined with refractory material and has walls and a floor. At least one induction heater is located in the floor of the furnace, the induction heater communicating with the interior of the furnace through a throat. The throat length is a substantial part of the service length of the induction heater. The invention also discloses structures in the induction heater throat that aids the distribution of molten metal in the furnace.

Abstract: Apparatus for a metal reduction and melting process, in which a metal and carbon-containing burden is heated in an induction furnace including a heating vessel in which the burden can float in at least one heap on a liquid metal bath in the vessel, is characterized in that the apparatus includes at least one induction heater or inductor located at the bottom center line of the vessel, with the longitudinal access oriented perpendicular to the access of the vessel.