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AssigneeSollac (Societe Anonyme)
InventorsJean Alex Michard, Henri Gaye, Jean-Luc Roth
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A process for adjusting the composition of a liquid metal, such as steel, is provided wherein liquid metal is sucked up from a start receptacle into a reactor which is at a reduced pressure with respect to the start receptacle. First, the liquid metal is made to flow inside the reactor under conditions close to plug flow where it undergoes a metallurgical treatment. Next, after the liquid metal has been conveyed through the reactor it is completely discharged into a finish receptacle which is also at a reduced pressure with respect to the reactor. To insure thorough mixing, the reactor is divided into a plurality of cells, each of which has its own independent gas injector for agitating the liquid metal therein.
A process for adjusting the composition of a liquid metal in a reactor that is divided into a plurality of cells, each of which defines a mixing zone, and each of which includes a fluid injector for thoroughly mixing liquid metal in the zone defined by the cell, comprising the steps of sucking up said liquid metal from a start receptacle into a reactor which is at a reduced pressure with respect to said start receptacle, making said metal to flow inside said reactor through each of said mixing zones defined by said plurality of cells under conditions close to plug flow to undergo a metallurgical treatment and then, after it has been conveyed through said reactor, discharging said metal into a finish receptacle with respect to which said reactor is also at a reduced pressure.
A plant for adjusting the composition of a liquid metal, which includes a start receptacle for containing said liquid metal, a reactor and a finish receptacle, said reactor including a vessel provided with means enabling its interior to be maintained at a reduced pressure with respect to those pressures existing in said start receptacle and said finish receptacle, with a first ascending dip tube, for dipping into the liquid metal contained in said start receptacle and the other end of which is connected to the bottom of said vessel, and a second descending dip tube, for dipping into the liquid metal contained in said finish receptacle and the other end of which is connected to the bottom of said vessel, and said vessel being shaped so as to impose on said liquid metal a flow close to plug flow over its travel between said dip tubes,
Dependencies are inferred from the claim text.