Method and apparatus for the treatment of iron with a reactant
First Claim
1. A ladle for treatment of molten iron with a reactant, said ladle comprisinga main chamber having sealed top and bottom ends,a teapot spout communicating with said main chamber of said ladle through a spout opening at the bottom end of said ladle, said spout being operative both for receiving molten iron poured into said ladle and for pouring treated iron out of said ladle,a dividing wall extending upwardly inside said main chamber from said bottom end of said ladle and forming a compartment within said main chamber adapted to contain the reactant,an opening in said sealed top end of said main chamber to allow placement of the reactant in said ladle compartment,a movable airtight cover mounted on said top end of said main chamber to provide said sealed top of said main chamber while said spout remains open to permit selective filling of molten iron into and dispensing of molten iron from said main chamber, andsaid dividing wall having a height greater than the height of said spout opening such that said dividing wall extends upwardly to a level above said spout opening and molten iron poured into said ladle fills said spout opening before flowing over said dividing wall into said compartment to react with the reactant, so that gases resulting from the reaction between the molten iron and the reactant cannot escape from said main chamber.
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Accused Products
Abstract
A ladle adapted for treatment of molten iron with a reactant comprises a main chamber having sealed top and bottom ends. A teapot spout communicates with the bottom end of the ladle, and a dividing wall extends upwardly inside the main chamber from the bottom end of the ladle and forms a compartment within the main chamber. The compartment is adapted to contain the reactant. An opening in the top end of the main chamber allows placement of the reactant in the ladle compartment, and an airtight cover is mounted on the top end of the main chamber to cover the opening.
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Citations
11 Claims
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1. A ladle for treatment of molten iron with a reactant, said ladle comprising
a main chamber having sealed top and bottom ends, a teapot spout communicating with said main chamber of said ladle through a spout opening at the bottom end of said ladle, said spout being operative both for receiving molten iron poured into said ladle and for pouring treated iron out of said ladle, a dividing wall extending upwardly inside said main chamber from said bottom end of said ladle and forming a compartment within said main chamber adapted to contain the reactant, an opening in said sealed top end of said main chamber to allow placement of the reactant in said ladle compartment, a movable airtight cover mounted on said top end of said main chamber to provide said sealed top of said main chamber while said spout remains open to permit selective filling of molten iron into and dispensing of molten iron from said main chamber, and said dividing wall having a height greater than the height of said spout opening such that said dividing wall extends upwardly to a level above said spout opening and molten iron poured into said ladle fills said spout opening before flowing over said dividing wall into said compartment to react with the reactant, so that gases resulting from the reaction between the molten iron and the reactant cannot escape from said main chamber.
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6. In combination in a ladle for treatment of molten iron with a reactant, the ladle having a teapot spout communicating with the interior of the ladle through a spout opening, the spout being operative both for receiving molten iron poured into the ladle and for pouring treated iron out of the ladle,
a dividing wall extending upwardly from the bottom of the ladle and forming a compartment within the ladle adapted to contain the reactant, the dividing wall having a height greater than the height of the spout opening such that said dividing wall extends upwardly to a level above said spout opening and molten iron poured into the ladle fills the spout opening before flowing over the dividing wall into the compartment to react with the reactant, a main cover closing the top of the ladle while leaving said spout open to recieve and dispense molten iron, an opening in the main cover to allow placement of the reactant in the ladle compartment, an airtight cover movably mounted on the main cover by a hinge, said airtight cover being movable between a first position wherein said airtight cover engages the main cover and closes the opening in the main cover so that gases resulting from the reaction between the molten iron and the reactant do not escape from the ladle, and a second position wherein said airtight cover is at an angle relative to the main cover so as to allow access into said ladle interior through the opening in the main cover, and a toggle clamp mounted on the main cover adjacent said airtight cover and being movable between a first position wherein said toggle clamp secures said airtight cover in said airtight cover first position, and a second position wherein said toggle clamp permits said airtight cover to move to said airtight cover second position.
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8. A method for the treatment of molten iron with a reactant, said method being carried out in a ladle having a teapot spout communicating with the interior of the ladle through a spout opening, the spout being operative both for receiving molten iron poured into the ladle and for pouring treated iron out of the ladle, said method comprising the steps of
placing a quantity of the reactant in the ladle interior, sealing the top of the ladle with a movable airtight cover while leaving said spout open to receive and dispense molten iron, and pouring molten iron into the ladle through the teapot spout and filling the ladle from the bottom up to a level above the opening of said spout into said ladle interior before said molten metal reaches and reacts with said reactant so that gases resulting from the reaction between the molten iron and the reactant cannot escape from the ladle interior.
Specification