Abstract: Apparatus for desulfurizing and heating molten metal includes a refractory body having an open top receptacle, an outlet and a passageway communicating the receptacle with the outlet. An electric coil is disposed in surrounding relation to the receptacle. The upper end of the coil is disposed generally equal to the level of the molten metal in the receptacle. The molten metal is supplied to the receptacle through a first feed member, and a desulfurizing agent is supplied to the receptacle through a second feed member. Upon excitation of the coil, electric currents are induced in the molten metal to heat it and also to agitate it to mix the desulfurizing agent with the molten metal.

Abstract: A reverberatory furnace includes a reverberatory furnace body for melting metal and holding molten metal, having an opening well, an electromagnetic trough for transporting hot molten metal from the reverberatory furnace body upwardly and slantly, having an inductor for generating a travelling magnetic field, and a guide trough for guiding the hot molten metal from the electromagnetic trough to the opening well. The hot molten metal is circulated through the reverberatory furnace.

Abstract: In supplying molten metal to a mold by means of an electromagnetic pump mounted on a metal container, the molten metal received in the pump is held in high temperature by means of partition walls longitudinally extending in the pump, even when the supply of molten metal is suspended for a long period. The partition walls define several passageways. In this period of suspension the driving force of travelling magnetic field is directed to the molten metal container and causes circulation of molten metal through central passageway and side passageways. Through this circulation molten metal in the pump is substantially replaced by molten metal in the container, thus making it possible to prevent solidification of molten metal in the pump by maintaining high temperature therein.