Molten metal conveying means and method of conveying molten metal from one place to another in a metal-melting furnace with simultaneous degassing of the melt
First Claim
1. An improved method for the conveyance of molten metal from one place to another in a molten metal pool or mass in a metal-melting furnace or out of said molten metal pool, while simultaneously degassing the same, comprising the steps of:
- providing an elongated conveying conduit having a lower end and an upper end, at least a portion of said conduit being inclined upwardly from the horizontal,providing a gas feed means having a gas inlet port and a gas exit port,positioning the exit port of said gas feed means with respect to the lower end of said conveying conduit so as to enable release of gas from said exit port into said conveying conduit at or adjacent its lower end,submerging the exit port of said gas feed means and the lower end of said conveying conduit in a molten metal mass or pool,introducing inert gas into said gas feed means and causing said gas to emerge from the exit port thereof at a supersonic velocity into said conveying conduit at or adjacent its lower end and to rise up the incline therein, andinducing concomitant flow of molten metal in said conveying conduit by means of said gas exiting from the exit port of said gas feed means and into said conveying conduit at or adjacent its lower end and rising up the incline therein.
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Accused Products
Abstract
A method, for the conveyance of molten metal from one place to another, in a high-temperature molten metal pool in a metal-melting furnace or out of said molten metal pool, employing an at least partially-inclined elongated conveying conduit and gas feed means for feeding inert gas into the lower end of the conveying conduit and thereby inducing a flow of molten metal in and through said conveying conduit, is disclosed, along with suitable apparatus for carrying out the said method wherein the parts or elements coming into contact with the high-temperature molten metal pool are of a suitable refractory material. According to the present invention, the inert gas is fed into the conveying conduit at a supersonic velocity, thereby simultaneously effecting a degassing of the molten metal while it is being conveyed.
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Citations
34 Claims
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1. An improved method for the conveyance of molten metal from one place to another in a molten metal pool or mass in a metal-melting furnace or out of said molten metal pool, while simultaneously degassing the same, comprising the steps of:
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providing an elongated conveying conduit having a lower end and an upper end, at least a portion of said conduit being inclined upwardly from the horizontal, providing a gas feed means having a gas inlet port and a gas exit port, positioning the exit port of said gas feed means with respect to the lower end of said conveying conduit so as to enable release of gas from said exit port into said conveying conduit at or adjacent its lower end, submerging the exit port of said gas feed means and the lower end of said conveying conduit in a molten metal mass or pool, introducing inert gas into said gas feed means and causing said gas to emerge from the exit port thereof at a supersonic velocity into said conveying conduit at or adjacent its lower end and to rise up the incline therein, and inducing concomitant flow of molten metal in said conveying conduit by means of said gas exiting from the exit port of said gas feed means and into said conveying conduit at or adjacent its lower end and rising up the incline therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification