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| Number | Title | Issue Date |
| 7217121 | Method and apparatus for improved process control in combustion applications This invention relates to a method and apparatus for improved process control in combustion applications, and particularly those relating to the steelmaking industry. An apparatus is provided for process control in a combustion application comprising a laser to tran... | 05/15/2007 |
| 7195480 | Shaft preheater The invention relates to a shaft preheater for preheating material in lump form with at least one shaft for receiving the material, a bridge disposed in the shaft for delivering hot gases which flow through the material from the bottom upwards, and a device for fill... | 03/27/2007 |
| 6923573 | Apparatus and method for measuring temperature of molten metal The invention provides a cooling system for protecting an image fiber and an imaging device from thermal influences and a temperature measurement apparatus, for a molten metal, capable of being easily controlled and stably measuring the temperature. The temperature ... | 08/02/2005 |
| 6736876 | Fluidized bed breakage prevention system for fluidized bed reduction reactor and method A fluidized bed reduction reactor (100) for supplying a reduced iron to a melter-gasifier (1) of a smelting reduction system includes an exhaust gas supply unit (3) for supplying an exhaust gas to a reduction gas supply tube (4) interconn... | 05/18/2004 |
| 6302941 | Method for operating a blast furnace A method for producing a molten iron in a blast furnace comprises the steps of: preparing an optical fiber covered with a metallic tube; measuring a temperature of the molten iron flow discharged from a tap hole of the blast furnace by means of making use... | 10/16/2001 |
| 6299348 | Immersion measuring probe for measurement in liquids An immersion measuring probe for measurement in liquids, in particular in molten metals, has a carrier tube, a measuring head mounted on one end of the carrier tube, and measuring elements as well as signal lines for the measuring signals generated by the... | 10/09/2001 |
| 6227702 | Method and apparatus for measuring a temperature of a molten metal A temperature measuring device comprises: an optical fiber; a metallic protective tube for covering the optical tube to form a metal-covered optical fiber; and a radiation thermometer connected to the metal-covered optical fiber. A heat insulation coating... | 05/08/2001 |
| 6224648 | Method and device for separating metals and/or metal alloys of different melting points In order to separate metals and/or metal alloys of different melting points from one another, a mixture of these metals and/or metal alloys is brought to a temperature at which the metal or the metal alloy of relatively low melting point is molten and the... | 05/01/2001 |
| 6004504 | Method and apparatus for controlling bath level and measurement of bath characteristics A method and apparatus for improved control of continuous electric arc furnace steelmaking in which a charge velocity detector measures charge velocity of metallic charge introduced to the furnace. A charge mass detector measures a charge mass of metallic... | 12/21/1999 |
| 5975755 | Shield for molten metal immersible thermocouple support pole A protective device for a support assembly for a thermocouple adapted for immersion into a molten metal bath to measure the temperature in the bath includes an elongated exterior protective tubular shield, preferably metallic. An interior spacing member i... | 11/02/1999 |
| 5762682 | Method and apparatus for processing ferrous materials In steel-making, there are conflicting processing requirements at different stages of the process. The method and apparatus of the invention creates different processing conditions at different stages of the process. Molten ferrous material (2) is stirred... | 06/09/1998 |
| 5643528 | Controlled magnesium melt process, system and components therefor Apparatus for a fully automated magnesium melt system. Raw magnesium ingots are moved through and controllably heated in a preheater chamber before they are introduced into a melt cell. A probe monitors the metal level and a control unit causes ingot char... | 07/01/1997 |
| 5544869 | Apparatus for plating tubing and other shapes An apparatus and method for continuously applying a zinc plating to tubing is provided having a lower reservoir of molten zinc, an elongated and enclosed plating chamber having a plating trough formed in its upper surface, a pump for transferring molten z... | 08/13/1996 |
| 5361825 | Plug for metallurgical vessels The invention relates to a plug made of refractory material for a metallurgical casting vessel. The plug 5, which can be formed with a central axial channel 5b, has an axial channel 5d which terminates eccentrically in front of the plug cap 5a and which i... | 11/08/1994 |
| 5308044 | Boron nitride ceramics and molten metal container provided with members made of the same ceramics The present invention relates to ceramics having excellent fusing damage resistivity against melt of metal or other inorganic materials. If a member formed of BN ceramics in the prior art comes into contact with melt of metal, glass or the like, the membe... | 05/03/1994 |
| 5275488 | BOF drop-in thermocouple A BOF drop-in sensor assembly includes a handle, a weight, a sensor, and a cage to protect the sensor. The weight includes a high density material having a density of at least 1.2 times the density of steel. The cage comprises crossed rods which are easil... | 01/04/1994 |
| 5209571 | Device for measuring the temperature of a molten metal The present invention is a device for measuring the temperature of a molten metal. The device includes a thermocouple element, a housing consisting of a heat-resistant material and a retainer member for receiving the thermocouple element. The retainer mem... | 05/11/1993 |
| 5100111 | Device for the detection of the temperature course of a metal or metal alloy melt using measurement techniques The invention relates to a device for the detection with measuring techniques of the temperature course of a metal or metal alloy melt in a container (39) which is influenceable by a heating device (22 to 24) and a cooling device (33). The temperature cou... | 03/31/1992 |
| 5035402 | Furnaces The furnace comprises two chambers, a closed well melting chamber and a main heating chamber. The furnace includes a hot gas duct connecting the chambers, the hot gas duct having a damper to control the gas flow between chambers in accordance with the res... | 07/30/1991 |
| 4984904 | Apparatus for continuously measuring temperature of molten metal and method for making same An apparatus for continuously measuring temperatures of molten metal including a thermocouple unit (A) and an immersion protection tube unit (B), wherein the thermocouple unit (A) comprises a thermocouple (1) having an end equipped with a temperature sens... | 01/15/1991 |
| 4934664 | Melting trough for melting metal with sensor A melting trough made of ceramic material is used for melting small amounts of metal by means of a flame including at least one trough channel which is not closed during operation. A thermosensor having a protective cover extends into the trough which is ... | 06/19/1990 |
| 4881824 | Immersible probe An immersion sampler probe for the analysis of a molten metal bath in a BOF vessel. The probe is weighted to penetrate the slag and position a temperature sensor or oxygen sensor at an appropriate depth. A counterweight with a float ensures proper immersi... | 11/21/1989 |
| 4872907 | Metal chip furnace charge apparatus and method Apparatus and method for charging metal chips into a molten bath of the metal from which the chips are formed, comprising a compacting extruder and a delivery conduit which is resistant to the mass of molten metal and which is pivotable to dip into the mo... | 10/10/1989 |
| 4852857 | Protective device for submersible lance in steel making or the like A protective device for a submersible lance to be used in a vessel of molten material, such as steel, prevents undesirable deposition of the material at the juncture of lance and probe by having in the lance a channel for gas, and by having between the la... | 08/01/1989 |
| 4842254 | Apparatus for purifying lithium The invention relates to an apparatus for purifying lithium, formed by a sealed enclosure comprising a heated upper portion 1 provided with a container 9 in which the molten lithium 11 is agitated and from which the impurities evaporate, and a cooled lowe... | 06/27/1989 |
| 4840353 | Apparatus for studying quenching fluids and quenchability of materials The invention concerns an apparatus for studying quenching fluids and quenchability of materials in the form of testpieces 5, comprising a heating furnace, a means for introducing each testpiece into the quenching liquid and extracting the quenched testpi... | 06/20/1989 |
| 4734129 | Recovery of metals from their alloys with lead using consummable lance and apparatus A metal, especially silver, may be recovered from its alloy with lead by a method comprising injecting, into the molten alloy, an oxygen-containing gas to oxidize the lead to form lead oxide slag and removing the slag from the molten metal. The oxygen-con... | 03/29/1988 |
| 4718643 | Method and apparatus for rapid high temperature ladle preheating This invention relates to ladle heating methods and apparatus. More particularly, this invention pertains to rapid high temperature ladle preheating utilizing an optimized heating cycle by involving oxygen and combustion air preheated by recuperation in t... | 01/12/1988 |
| 4702768 | Process and apparatus for introducing metal chips into a molten metal bath thereof A process for the introduction of metal chips, especially scrap metal chips, into a molten mass of the metal of which said chips are formed, wherein the essentially dry chips are first compacted and placed into strip form, and then introduced into the mol... | 10/27/1987 |
| 4692113 | System using electric furnace exhaust gas to preheat scrap for steelmaking Dust containing high-temperature gas exhausted from an electric steelmaking furnace is directed through scrap preheaters, wherein scrap that is to be charged into said electric furnace is preheated. The absorption of some of the heat from the exhaust leav... | 09/08/1987 |
| 4619533 | Tuyere pyrometer An apparatus for measuring bath temperature of metallurgical furnaces through a tuyere is disclosed. The apparatus comprises a periscope adapted to be inserted into a tuyere, a fiber optic cable having one end connected to the periscope for receiving radi... | 10/28/1986 |
| 4619693 | System using electric furnace exhaust gas to preheat scrap for steelmaking Dust containing high-temperature gas exhausted from an electric steelmaking furnace is directed through scrap preheaters, wherein scrap that is to be charged into said electric furnace is preheated. The absorption of some of the heat from the exhaust leav... | 10/28/1986 |
| 4575052 | Apparatus for continuously quenching a steel plate A method of and apparatus for continuously quenching a steel plate with cooling water, by passing the steel plate through a water storage vessel containing the cooling water. The cooling water for cooling the upper side of the steel plate is introduced in... | 03/11/1986 |
| 4449700 | Method and apparatus for sampling or measuring a parameter of a metal melt The buoyancy change of a probe as it is lowered into a molten metal melt is detected and the lowering of the probe terminated a predetermined time after the detection of the buoyancy change to precisely position the probe at a predetermined level below th... | 05/22/1984 |
| 4436289 | Method and apparatus for controlling the atmosphere in a carburizing furnace utilizing a cascaded valving system An automatic control for a multi-zone push type carburizing furnace capable of controlling the flow of either an endothermic gas atmosphere or a nitrogen methanol atmosphere at both high and low flow rates and during normal and suspend carburizing utilize... | 03/13/1984 |
| 4433832 | Metallurgical lance A refractory clad metallurgical lance comprises a temperature sensing thermocouple means in combination with an internal gas conduit encased within exterior refractory cladding material wherein the conduit provides a passage way for transmitting inert gas... | 02/28/1984 |
| 4404043 | Method of and an apparatus for continuous heat treatment of separated elongated metallic material In a method for continuous heat treatment of separated elongated metallic material said material is conveyed stepwise through a single furnace chamber. Said furnace chamber comprises a heating section and an adjacent holding section. In the heating sectio... | 09/13/1983 |
| 4377347 | Method for measuring temperature of molten metal received in vessel A method for measuring the temperature of molten metal received in a vessel, which includes covering the tip portion of a probe which includes a thermocouple housed in an alumina protecting tube, from inside to outside with a ceramic fiber and a quartz gl... | 03/22/1983 |
| 4288062 | Apparatus for control and monitoring of the carbon potential of an atmosphere in a heat-processing furnace A system is described for precise monitoring and control of the carbon content of the atmosphere of a furnace such as a carburizer used in the heat-processing of steel parts. The disclosed apparatus includes a sampling system for withdrawing a gas sample ... | 09/08/1981 |
| 4279406 | Plant for generating an atmosphere for the heat treatment of metals This invention relates to the generation of an atmosphere for the heat treatment of metals, incorporating an alcohol of the methanol type that decomposes by cracking. A generating plant comprises a nitrogen circuit connected to a pressure source, an alcoh... | 07/21/1981 |
