| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 266045000 | Plugging or tapping | 15 |
| 20080203628 | Method for controlling molten metal material leaking in injection apparatus of metal molding apparatus - A method for controlling a molten metal material in an injection apparatus that includes a cylinder body with a nozzle at a front end, and a discharge opening on a bottom side of a rear portion. Heating means are provided on an outer periphery of the cylinder body and an injection cylinder is inserted onto an injection plunger for a forward and backward travel within a clearance inside the cylinder body. A material melting and supplying apparatus on a top portion of the injection cylinder has a bottom end outlet communicating with a cylinder body supply opening. Molten metal material accumulates from the supply opening in a cylinder front portion by backward plunge travel and is injected by a forward plunge travel. Heating means maintains the temperature of the molten metal material in front and middle cylinder portions and allows a lower temperature in a rear portion providing a seal metal as well as a lubricant. | 08-28-2008 |
| 20080246195 | Method and apparatus for testing the integrity of a shroud seal on a ladle for a continuous casting installation - Molten steel is conducted by a tubular shroud interconnecting a slide gate at a bottom tap hole of a ladle with the molten steel in an underlying tundish of a continuous caster. The flow path is confirmed to be isolated from contaminants in atmospheric air by applying a source of partial vacuum to the internal cavity of tubular shroud to allow prevailing atmospheric pressure acting on molten steel in a tundish to push molten steel upwardly in the internal cavity of the tubular shroud. A measure of the partial vacuum in the cavity of the shroud is used to assess the integrity of the gas tight seal. Before and after the integrity of the gas tight seal is determined, a three way valve is used to apply an inert gas to the volume in the cavity of the shroud. | 10-09-2008 |
| 20090256292 | ADJUSTABLE FEED CHUTE AND ASSOCIATED METHOD OF FEEDING AND MELTING - A method and apparatus for optimizing melting of titanium for processing into ingots or end products. The apparatus provides a main hearth, a plurality of optional refining hearths, and a plurality of casting molds or direct molds whereby direct arc electrodes melt the titanium in the main hearth while plasma torches melt the titanium in the refining chambers and/or adjacent the molds. Each of the direct arc electrodes and plasma torches is extendable and retractable into the melting environment and moveable in a circular pivoting or side to side linear motion. | 10-15-2009 |
| 20100019421 | MUD GUN CAP - A mud gun cap is provided. The mud gun cap includes a flame resistant outer face, a ring and a mounting device wherein the mud gun cap connects to a mud gun nozzle to protect the mud gun nozzle from deterioration because of contact with molten iron and slag. The mud gun cap also prevents, or at least reduces the amount of, mud falling out of the nozzle while the mud gun nozzle is rotated into operation position. | 01-28-2010 |
| 20100201050 | SYSTEMS AND METHODS FOR ACCESSING A FURNACE MELT - A method and apparatus for accessing a furnace melt are provided. Preferably, the method and apparatus provide for the safe and efficient access to the molten metal melt in a furnace. According to one aspect of the invention used in a steel making process in an electric arc furnace, a furnace aperture plug is reciprocated through a furnace aperture, the furnace aperture plug is retracted from the furnace aperture, access is provided to the molten metal melt in the furnace, and the furnace aperture plug is reinserted into the furnace aperture when the access is concluded. | 08-12-2010 |
| 20110227262 | PIVOTING SLAG DOOR - A pivoting, liquid cooled slag door for metallurgical furnaces is disclosed. The slag door can pivot from the top using one or more robust mechanisms that enable the door to be moved into and stopped in any position between a closed position and an open position. The slag door can also incorporate wing walls disposed in close proximity to the sides of the slag door. The wing walls can minimize air infiltration into the furnace when the slag door is in an open position. The slag door can be disposed in close proximity to the hearth of the furnace to eliminate problems associate with conventional slag door tunnels. The slag door can be fitted with a furnace apparatus such as a burner or a lance and can be used to provide access to the interior of the furnace and to control the flow of material out of the furnace. | 09-22-2011 |
| 20110241268 | Method for Exchangeably Fastening a Refractory Purge Plug or Sleeve and a Container for Molten Metal - A container for molten metal has at least one opening ( | 10-06-2011 |
| 20110285066 | BLAST FURNACE PLUG - An apparatus for centering a tap drill is provided herein. The device includes a body made of a refractory material that has a tapered shape and a connector secured to body configured to permit connection of the body to a tap drill bit. In addition, a method of operating a blast furnace is provided herein. The method includes providing a blast furnace plug having a refractory body having a tapered configuration. Securing the blast furnace plug to a tap drill bit. Aligning the blast furnace plug with a tap hole plugged with mud, and inserting the blast furnace plug into the mud to create an indentation in the mud having a tapered configuration. Removing the blast furnace plug from the tap drill bit, aligning the tap drill bit with the indentation and tapping the blast furnace. | 11-24-2011 |
| 20120074620 | FURNACE TAP HOLE FLOW CONTROL AND TAPPER SYSTEM AND METHOD OF USING THE SAME - A molten metal flow controller ( | 03-29-2012 |
| 20130001839 | METHOD FOR PROTECTING THE VALVE OF A MOLTEN-METAL LADLE AND FACILITATING FREE OPENING THEREOF - Spout-filling compositions and a method for protecting and facilitating free opening of a spout valve of a ladle are disclosed. The spout-filling compositions may comprise an iron-based ilmenite sand. More particularly, the compositions may comprise ilmenite sand in combination with a quartz and/or carbon black and/or chromite and zircon. The compositions described herein may be placed in a ladle to insulate the valve from molten metal. | 01-03-2013 |
| 20130320601 | AUTOMATIC SANDING HOPPER SYSTEMS AND METHODS - Embodiments of the present invention relate to automatic sanding hopper systems and methods for supplying sand to a tap hole in a furnace. The automatic sanding hopper system may automatically open a chimney door to provide access to a furnace through a chimney hole. A hopper assembly in the sanding hopper system may automatically move to a position in which a plunger may automatically actuate to clear or clean out the chimney hole. The hopper assembly may thereafter automatically move to a position in which a sand dispenser delivers sand through the chimney hole, into the furnace, and into the tap hole in the furnace. A sensor device may determine whether or not the tap hole is properly filled with sand. The hopper assembly may automatically retract and the chimney door may automatically close to begin another steelmaking heat. | 12-05-2013 |
| 20140175715 | Method And Arrangement For Vortex Reduction In A Metal Making Process - A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method. | 06-26-2014 |
| 20150145184 | METHOD FOR OPENING AND CLOSING A TAPPING OPENING OF A METALLURGICAL SMELTING VESSEL AND METALLURGICAL SMELTING VESSEL - The invention relates to a method for opening and closing a tapping opening of a metallurgical smelting vessel in particular of an electric arc furnace, in the bottom region of which a wall section having an opening is arranged, wherein a device for moving block elements in a direction (T) perpendicular to the surface normal of the wall section in the area of the opening is arranged below the opening, wherein the device holds the block elements on the wall section in such a way that he block elements lie against the wall section in a sealing manner. In order to achieve wear free and reliable opening and closing of the tapping opening it is provided that, in order to close the tapping opening, a block element free of passage openings is moved under the opening by the device and that, in order to open the tapping opening, a block element having at least one passage opening is moved under the opening by the device, such that liquid metal an drain from the smelting vessel through the passage opening in the block element. The invention further relates to a metallurgical smelting vessel. | 05-28-2015 |
| 20160047601 | Oxygen Lance With At Least One Coil - An oxygen lance assembly that is at least capable of moving towards or away from the object to be lanced, said assembly including a supply of gaseous oxygen and metallic tubing wherein the oxygen supply is continuously feed through the said tubing when the lance is in use, and the said lance assembly includes a reel, and the said metallic tubing is coiled upon and carried by the said reel, and when in use, the metallic tubing is continuously uncoiled from the said reel as the said metallic tubing is consumed during use. | 02-18-2016 |
| 20160123669 | METHOD FOR TAPPING A STEEL MAKING FURNACE - A method of tapping a steelmaking furnace comprised of determining a desired level of steel to be attained in a ladle, and calculating the weight of molten steel that will be present when the desired level is attained following a transfer of molten steel from the furnace to the ladle. The furnace is operated such that slag is formed on top of molten steel contained therein. The furnace is moved to a first position to cause transfer of molten steel to the ladle to begin. The transfer of molten steel from the furnace to the ladle is continued, and at the first occurrence of molten steel attaining the desired level in the ladle, molten steel attaining a maximum allowable weight in the ladle, or an excessive amount of slag being present upon the molten steel in the ladle, transfer of molten steel to the ladle is ceased. | 05-05-2016 |
