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US 9,039,958 B2Granted
Metal melting apparatus
OwnerRifat A. Chalabi, Ophneil Henry Perryinventors
Life of this patent
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Abstract
A refractory well (16) for melting scrap metal pieces into a molten metal bath, comprises an inlet (18) for introducing metal into said well, the inlet being located so as to cause a circular flow of molten metal in said well, an outlet (19) for the flow of metal from said well and an electromagnetic pump (22) located beneath the refractory well for pumping said molten metal from said well through said outlet.
Claims28
A refractory well for melting solid scrap metal pieces into a molten metal bath, comprising:
- an inlet for introducing the molten metal into said refractory well from the molten metal bath, said inlet being located so as to cause a circular flow of the molten metal in said refractory well;
- an outlet for the flow of the molten metal from said refractory well;
- an electromagnetic pump located beneath the refractory well for pumping said molten metal from said refractory well through said outlet;
- and
- a bypass conducting a portion of the molten metal past said outlet, said bypass being arranged so as to enable heat transfer from the molten metal in said bypass to said refractory well at or adjacent said outlet thereby to minimize the risk of blockage of solid metal scraps in said outlet, the refractory well defining a cavity.
2 more elements
A method of melting scrap metal comprising:
- providing a refractory well having an inlet for introducing molten metal into said refractory well and an outlet for the flow of molten metal from said refractory well, and an electromagnetic pump located beneath the refractory well for pumping said molten metal from said refractory well through said refractory well outlet;
- causing a downward, circular flow of the molten metal in said refractory well towards said outlet of said refractory well;
- introducing solid scrap metal into said molten metal flow;
- applying a pumping force to said molten metal at a location thereby to cause said molten metal to be drawn and not pushed through said outlet;
- and
- conducting a portion of the molten metal through a bypass past said outlet, so as to enable heat transfer from said molten metal in said bypass to said refractory well at or adjacent said outlet thereby to minimize the risk of scrap metal blockage in said outlet.
3 more elements
Dependencies are inferred from the claim text.