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| Number | Title | Issue Date |
| 8097063 | System for furnace slopping prediction and lance optimization A method of making steel in a vessel comprising providing a lance for blowing oxygen on the surface of the steel in the vessel, the lance joined to a lance carriage and in communication with an accelerometer, the accelerometer in signal communication with a data acq... | 01/17/2012 |
| 8021459 | Method and apparatus for controlling metal separation The invention relates to a method and apparatus for controlling a continuous metal removal in conjunction with a zinc preparation process, in which the metal removal is performed in one or more reactors (11a-c), in conjunction with the reactor, ... | 09/20/2011 |
| 8002871 | Methods and apparatus for an oxygen furnace quality control system A method for control of a basic oxygen furnace includes creating a computer-implemented model of the basic oxygen furnace based on support vector regression (SVR) such that the model is configured to produce a prediction of first turndown quality of the basic oxygen... | 08/23/2011 |
| 7942950 | Method for controlling a molten metal bath bubbling in a metallurgical vessel and a device for carrying out said method A method introducing a stirring gas through a vessel bottom, receiving a measurable mechanical vibration by at least one sensor fixed to the vessel or to a supporting frame thereof, filtering the thus detected vibration signals by a high pass filter and preferably b... | 05/17/2011 |
| 7740684 | Methods for recovering metals from automobile scrap and electronic waste A method of recovering the metal from automobile scrap and electronic waste. It includes separating the automobile scrap and the electronic waste to provide some metal pieces, washing and/or shredding and/or selecting said metal pieces to provide some groups of meta... | 06/22/2010 |
| 7524355 | Nano-composite energetic powders prepared by arrested reactive milling A method is disclosed for producing an energetic metastable nano-composite material. Under pre-selected milling conditions a mixture of powdered components are reactively milled. These components will spontaneously react at a known duration of the pre-selected milli... | 04/28/2009 |
| 7468090 | Method for tapping a steel making furnace A method for tapping of steel from a steelmaking furnace to a receiving vessel comprising the steps of providing a steelmaking furnace comprising a tapping hole, and means for angular positioning of the furnace to vary the depth of molten steel and slag contained in... | 12/23/2008 |
| 7357826 | Method and apparatus to monitor/detect nodularization in ductile iron The present invention is direct to a method/apparatus for verifying a nodularization process in a molten iron disposed within a ladle. The method includes the steps of: transferring the ladle with the molten iron to a nodularization area; adding an amount of magnesi... | 04/15/2008 |
| 7303665 | Aquarium drainage and waste detection system An aquarium drainage system having a filter, funnel, clear tube, sensor housing, light sensor, light beam generator, waste indicator light, primary valve, secondary/safety valve, safety cap and safety switch, as well as the other components shown in the drawings, wh... | 12/04/2007 |
| 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 |
| 7209871 | Prediction of cavity size in the packed bed systems using new correlations and mathematical model It has been reported in the literature that raceway measurement made during the decreasing gas velocity is relevant to operating blast furnaces. However, no raceway correlation is available either for decreasing or increasing gas velocity which is developed based on... | 04/24/2007 |
| 7183114 | Method for the analysis of gas produced by a titanium tetrachloride fluidized bed reactor A method to determine the concentration ratio of carbon monoxide to carbon dioxide in the gaseous product of a fluidized bed reactor for producing titanium tetrachloride. The hot fluidized bed of the reactor is used as the source of infrared radiation which radiatio... | 02/27/2007 |
| 7165599 | Melting and feeding method and apparatus of metallic material in metal molding machine In a metal molding machine provided having a tilt to a clamping device with an injection unit which is constituted by a liquid metallic material reservoir in which a cylinder having a nozzle portion at the tip portion equipped with a heating device at the outer peri... | 01/23/2007 |
| 7012696 | Optical heterodyne detection in optical cavity ringdown spectroscopy The disclosure relates to optical heterodyne detection cavity ringdown spectroscopy. In one aspect the disclosure relates to an optical system comprising a ringdown cavity cell defining a resonant optical cavity, means for directing coherent light selected from the ... | 03/14/2006 |
| 6969416 | Method for controlling slag characteristics in an electric arc furnace A method of controlling slag characteristics in an electric arc furnace control is disclosed. The furnace has inputs including oxygen supply and carbon supply. The method of controlling slag characteristics includes introducing a charge to be melted into the furnace... | 11/29/2005 |
| 6797032 | Method for measuring bath level in a basic oxygen furnace to determine lance height adjustment The present invention is directed a method for adjusting the height of a lance with respect to a bath surface of any selected heat manufactured in a metallurgical vessel during a continuing series of heats. ... | 09/28/2004 |
| 6767382 | Aluminium processing apparatus and process for separating aluminium from a mixture of aluminium and aluminium dross An apparatus for separating molten aluminium from a mixture of molten aluminium and aluminium dross includes a table for supporting an insulated crucible containing the mixture of molten aluminium and aluminium dross. A rotatable frame supports a plurality of tines ... | 07/27/2004 |
| 6695936 | Methods and apparatus for using large inertial body forces to identify, process and manufacture multicomponent bulk metallic glass forming alloys, and components fabricated therefrom To identify and manufacture metallic glass forming alloys, large inertial forces or "g"-forces are used to sequentially separate crystalline phases (particles) as they sequentially form and grow in a molten alloy during gradual cooling of the alloy below ... | 02/24/2004 |
| 6693443 | Systems for detecting and measuring inclusions The present invention relates to systems of methods of detecting and measuring inclusions in liquid metals. More particularly, non-metallic inclusions having a conductivity level different from the liquid metal melt are forced to migrate and are collected... | 02/17/2004 |
| 6669754 | Method for optimizing the layout and operation of a reduction method A description is given of a method of optimizing the design and operation of a reduction process for iron-containing charge materials (3), preferably in lump form, in a reduction shaft (1) to which reduction gas (9) is fed, for example from a fusion gasif... | 12/30/2003 |
| 6607577 | Desulphurization reagent control method and system A method and computer program for determining the amounts of desulphurizing reagents required to reduce the sulphur content in hot metal to meet a specified aim concentration. The determination of the amounts of reagents is based on a multivariate statist... | 08/19/2003 |
| 6576039 | Method and apparatus for metal pouring A method and apparatus is disclosed to improve the metal yield by adjusting the tilt angle of a tilting vessel having a submerged tap hole. The tilt angle is adjusted in response to parameters inherent in the pouring process, i.e. the proximity of the ves... | 06/10/2003 |
| 6280499 | Yield metal pouring system Clean metal pour form a tilting, side-tapped furnace containing metal and slag is maximized by determining metal residuum remaining in the furnace from measuring the liquid metal poured into the receiving ladle and adjusting the furnace tilt angle to mini... | 08/28/2001 |
| 6264716 | Process for controlling the stirring energy delivered by a gas flowing through a liquid A process for stirring molten steel in a container. In this process, argon gas is introduced into the container at a flow rate of from about 0.005 to about 0.2 cubic feet of argon per ton of molten steel per minute, the extent to which said container is c... | 07/24/2001 |
| 6228142 | Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same An apparatus for keeping an optimal penetration depth formed at the front end of an oxygen tuyere in the producing facilities of molten pig iron utilizing non-coking coal and a method for keeping the same. A sensor for measuring distance using a laser for... | 05/08/2001 |
| 6197086 | System and method for minimizing slag carryover during the production of steel A system and method for detecting molten slag in a tap stream between a steel making vessel such as a basic oxygen furnace (BOF) and corresponding ladle. An infrared (IR) imaging or detecting device(s) is used to image/view the BOF-to-ladle tap stream, th... | 03/06/2001 |
| 6175676 | Fiber optic sensor and method of use thereof to determine carbon content of molten steel contained in a basic oxygen furnace The invention is directed to a gas cooled fiber-optic cable apparatus for use in a hostile environment, for instance adjacent a metallurgical furnace, and a method using the apparatus to determine carbon content of molten steel. The fiber-optic cable incl... | 01/16/2001 |
| 6129776 | Operation method of vertical furnace A method for operating a shaft furnace which comprises charging the furnace with an iron source having a low degree of metallization and thus requiring reduction, an iron source having a high degree of metallization and thus requiring nothing but melting,... | 10/10/2000 |
| 6093235 | Process for decarbonising a high-chromium steel melt A process for decarburizing a steel melt for the production of high-chromium steels by blowing in oxygen in which the decarburization rate is continuously measured and the amount of oxygen to be injected is adjusted depending on the measured values. The f... | 07/25/2000 |
| 6090180 | Cupola emission control system and method A cupola emission control system is provided that includes both improved physical emission control equipment and improved controls for operating such equipment. The physical emission control improvements include an orifice ring of restricted diameter abov... | 07/18/2000 |
| 6080223 | Flame detection monitoring system for detecting blockages in blast furnace injection paths A flame detection system for detecting blockage in oil injection paths into blast furnaces utilized in the manufacture of iron. The flame detection system, as designed and installed, monitors the amount of light seen through a blowpipe peephole and causes... | 06/27/2000 |
| 6053960 | Method of manufacture of cored wire for treating molten metal A cored wire continuously formed by continuously inserting an extruded core inside a continuously roll formed sheath, the peripheral edges of the roll formed sheath joined by a continuous lock seam. Inspection of the partially formed lock seam at a design... | 04/25/2000 |
| 5984998 | Method and apparatus for off-gas composition sensing An apparatus and method for non-intrusive collection of off-gas data in a steelmaking furnace includes structure and steps for transmitting a laser beam through the off-gas produced by a steelmaking furnace, for controlling the transmitting to repeatedly ... | 11/16/1999 |
| 5968227 | System and method for minimizing slag carryover during the tapping of a BOF converter in the production of steel A system and method for detecting molten slag in a tap stream between a steel making basic oxygen furnace (BOF) and corresponding ladle. BOFs are used in the manufacture of steel. An infrared (IR) imaging or detecting device is used to image/view the BOF-... | 10/19/1999 |
| 5785732 | process and apparatus for recovering Na from spent NaS cells A process for recovering Na from a spent NaS cell, includes the steps of forming an opening in a spent NaS cell, flowing down molten Na from an interior of the NaS cell through the opening in a heating oil vessel, passing the molten Na through a filter pl... | 07/28/1998 |
| 5603746 | Method and apparatus to determine and control the carbon content of steel in a BOF vessel Apparatus for determining in-blow % carbon content and/or the First Turn Down Carbon of a BOF heat includes a light sensor housed within a temperature regulated case having a sighting window including air wipe means to shield the light sensor from steelma... | 02/18/1997 |
| 5424031 | Grain refining alloy and a method for grain refining of aluminum and aluminum alloys The present invention relates to a method for grain refining of aluminium and aluminium alloys wherein a siliconboron alloy containing between 0.01 to 4.0% by weight of boron is added to molten aluminium or aluminium alloy in such an amount that the resul... | 06/13/1995 |
| 5405121 | Apparatus to indicate the oxygen content of molten copper using the vibration signal of a graphite rod immersed into the molten metal The purpose of this invention is to present an apparatus consisting of a graphite rod, a vibration signal sensor, a signal processing unit, a data processing unit, and a data display unit to indicate the oxygen content of a copper melt. As such graphite r... | 04/11/1995 |
| 5327357 | Method of decarburizing molten metal in the refining of steel using neural networks A method of decarburizing molten metal in the refining of steel using neural networks with a first neural network trained to analyze data representative of many process periods of one or more decarburization operations for providing an oxygen count for a ... | 07/05/1994 |
| 5286276 | Quenching system to prevent loss of fluidity in a reaction vessel A quench system which can be used to quench a continuous reaction such as the continuous digestion of titaniferous ores with sulphuric acid is provided. The quench system comprises a pressure vessel (1) equipped with a full bore outlet valve (5) connected... | 02/15/1994 |
