Process and device for introducing gases into metal melts
First Claim
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1. A process for introducing gas into a metal melt present in a metallurgical vessel via ducts arranged in a refractory lining of the vessel, the process comprising the steps of:
- introducing gas into a gas distribution antechamber;
subsequently passing the gas around a first acoustic generator to create an oscillating jet of gas;
feeding the oscillating jet of gas to at least one second acoustic generator and exciting the jet of gas to periodic oscillations;
conducting the oscillating, excited gas jet into a gas-distribution main chamber; and
feeding the gas jet from the main chamber via the ducts to the melt contained in the vessel.
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Abstract
A process and a device for introducing gases into a metal melt contained in metallurgical vessels via ducts arranged in the refractory lining of the vessel. In order to permit deeper penetration of the jet of gas and better mixing with the melt, an oscillating jet of gas is produced and introduced into the melt. For this purpose, several acoustic generators with which the gas is brought into contact with the melt are provided in the device.
27 Citations
13 Claims
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1. A process for introducing gas into a metal melt present in a metallurgical vessel via ducts arranged in a refractory lining of the vessel, the process comprising the steps of:
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introducing gas into a gas distribution antechamber; subsequently passing the gas around a first acoustic generator to create an oscillating jet of gas; feeding the oscillating jet of gas to at least one second acoustic generator and exciting the jet of gas to periodic oscillations; conducting the oscillating, excited gas jet into a gas-distribution main chamber; and feeding the gas jet from the main chamber via the ducts to the melt contained in the vessel. - View Dependent Claims (2, 3, 4)
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5. A device for introducing gases into a metal melt contained in a metallurgical vessel having a bottom, comprising:
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a gas distributor having a main chamber and, on a gas entrance side, an antechamber; a first acoustic generator configured as an annular groove coaxial to a central axis of the gas distributor, the annular groove being in a region of a mouth of the antechamber; a second acoustic generator configured as a disk-shaped groove arranged in the gas distributor so as to adjoin a mouth of the annular groove and extend radially outward; a support ring arranged behind the disk-shaped groove, in a gas flow direction, so as to extend into the gas distributor and separate the antechamber from the main chamber; and at least three paraxial slit-shaped ducts arranged at an outlet of the main chamber so as to discharge into the bottom of the vessel. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification