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| Number | Title | Issue Date |
| 4219188 | Slide valve for the injection of material for use in the outlet of a metallurgical vessel A slide valve for the outlet of a metallurgical vessel includes a stationary plate having a flow-through opening and adapted to be fixedly positioned beneath an outlet in a metallurgical vessel, and a slide plate mounted beneath the stationary plate for s... | 08/26/1980 |
| 4200452 | Method for the refining of iron-based melts A method of and an apparatus for the refining of a ferrous melt makes use of a ladle with a removable cover provided with a porous plug at its bottom through which an inert gas is introduced. A direct current source is connected to a carbon electrode in c... | 04/29/1980 |
| 4179103 | Means for injecting gas into a molten metal A gas delivery tube including tubular body portion of refractory material having a recess adjacent one end in which recess is housed a porous element for emitting small bubbles containing the gas. The body portion is provided with an internal gas inlet pi... | 12/18/1979 |
| 4169584 | Gas injection apparatus Gas is injected into molten metal, such as aluminum, to purify the molten metal either of dissolved gases (degassing), or of dissolved solids such as magnesium ( "demagging"). The apparatus for accomplishing this injection contains two metallic bath chamb... | 10/02/1979 |
| 4139184 | Gas stirrer A vessel, particularly a ladle, and method for mixing molten metal. The vessel is adapted to be used in an upright position and has bottom openings, including at least one first opening for the introduction of gas under pressure to stir the contents, and ... | 02/13/1979 |
| 4106759 | Device and method for the introduction of gases into reaction vessels containing liquids The invention relates to a device for introduction of gases into reaction vessels containing liquids, especially vessels undergoing thermal stress, in particular filter housings for metal melts, using a gas-permeable body of heat-resistant material, fitti... | 08/15/1978 |
| 4087080 | Apparatus for filtering metal melts A metal melt is filtered by causing the melt to flow successively into a filter chamber, downwards through the filter chamber, into a riser chamber, upwards through the riser chamber, and out of the riser chamber, and simultaneously introducing a counter-... | 05/02/1978 |
| 4064925 | Continuous casting method and apparatus In a method of and an apparatus for treating metal melts with flush gas during continuous casting, the molten metal is led from a tundish having an outflow opening into a mold, while inert flush gas is supplied above the outflow opening of the tundish at ... | 12/27/1977 |
| 4053147 | Device for introduction of gases into reaction vessels containing fluids A vessel which, when in use, is subject to thermal stress, and which includes a device for introduction of gas through the wall of the vessel, the device comprising a metal sleeve fastened to the outer face of the wall of the vessel in an adjustable and e... | 10/11/1977 |
| 3938790 | Method and converter for refining pig-iron into steel Pig-iron is refined into steel by blowing oxygen and a protective screen of an encasing gas through injecting means located at or near the bottom of a converter containing a melt of molten metal. The encasing gas while protecting the injecting means, allo... | 02/17/1976 |
| 3931913 | Slide gate nozzle A slide gate nozzle for the spout of metallurgical vessels includes a pair of plates, arranged on the opening of a pouring channel. The plates include a fixed bottom plate and a displaceable sliding plate. A metal part is provided in the pouring channel o... | 01/13/1976 |
