Class / Patent application number | Description | Number of patent applications / Date published |
075375000 | Process control responsive to sensed condition | 40 |
20090107295 | Method and apparatus for the recovery of refractory debris materials and ladle slags as process slags in iron metallurgy producton in eafs, and the related metering to the furnace for the formation of the process slag - A method for the recovery of refractory debris materials and ladle slags as process slags in the iron metallurgy production in EAFs and the related metering to the furnace for the formation of the process slag comprises the following steps: grinding and screening of the refractory debris materials until powders of controlled granulometry are obtained, storage of the powders in storage sites, injection of the powders into an EAF furnace by means of automatic metering of the various components. | 04-30-2009 |
20090193936 | 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 furnace. Historical data associated the first turndown quality is received. The model is applied to the historical data to produce a prediction of first turndown quality, which is compared to an actual measurement of first turndown quality. The control recipe for the basic oxygen furnace based at least in part upon a result of the comparison. The system generally includes a preprocessor, a database configured to store historical data associated with first turndown quality of the basic oxygen furnace, a prediction module coupled to the database, and a run-to-run control module. A graphical user interface is provided for visualization and adjustment of data. | 08-06-2009 |
20100011907 | EXTRACTION OF METALS FROM SULPHIDE MINERALS - Nickel entrained in the sulphide mineral pyrrhotite is engineered to dissolve in leaching acid in a two step procedure. First, a slurry of the mineral and the acid is activated by oxidation. This is done in a time T | 01-21-2010 |
20100071508 | Method of regulating the output of carbon monoxide in a metallurgical melting process - In a method of regulating the output of CO in steel production, oxygen is introduced into a melt to remove carbon present, the actual value of the carbon stream evolved from the melt is determined, the intended value of the evolved carbon stream derived from the amount of oxygen introduced and the carbon content of the melt is calculated, intended and actual values are compared with one another and if the actual value is below the intended value, measures for preventing boiling are undertaken. | 03-25-2010 |
20100326240 | CONTROL METHOD FOR MELTING A METAL CHARGE AND WEIGHING DEVICE USED IN SAID METHOD - A control method for melting a metal charge in a furnace comprising at least a hearth containing the metal charge and a roof. The method provides that the hearth is weighed by means of a plurality of weighing elements distributed along the perimeter of the base of the hearth, and that the values detected by the plurality of weighing elements are sent to a control unit in order to obtain information relating to the distribution of the metal charge inside the hearth. | 12-30-2010 |
20110011209 | METHOD FOR PRODUCING MOLTEN IRON - A method for producing molten iron by melting an iron source material using an iron bath-type melting furnace comprising a top-blowing lance at an upper part of the furnace, a bottom-blowing tuyere in the bottom of the furnace and a tap hole at a lower part on the side of the furnace, the method comprising: a melting process of charging the iron source material, a carbonaceous material and a flux into the furnace and top-blowing an oxygen-containing gas through the top-blowing lance while blowing an inert gas through the bottom-blowing tuyere into melt present in the furnace to stir the melt to thereby melt the iron source material and generate the molten iron and slag using combustion heat of combusting carbon in the carbonaceous material and/or in the molten iron, wherein the melting process has at least one tapping process of discharging the molten iron and the slag through the tap hole while holding a position of the furnace in generating the molten iron, and the tapping process continues or interrupts generation of the molten iron and continues top-blowing of the oxygen-containing gas to thereby keep a temperature of the molten iron in the furnace at or above a pre-set lowest temperature of the molten iron. | 01-20-2011 |
20110048172 | SYSTEMS AND METHODS FOR LEACHING A MATERIAL FROM AN OBJECT - Embodiments of the present invention include methods and systems for leaching material from an object. Examples include leaching ceramic from metallic components. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for leaching systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith. | 03-03-2011 |
20110209579 | 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 acquisition module and a computer; charging the vessel with materials for steel making; lowering the lance into the vessel and injecting oxygen into the materials; acquiring a signal from the accelerometer indicative of lance vibration; processing the vibration signal to determine component frequencies of lance vibration; comparing the levels of the component frequencies to desired operating values; and adjusting at least one steel making process parameter based on the level of at least one of the component frequencies. The steel making process parameter to be adjusted may be oxygen flow rate through the lance. | 09-01-2011 |
20120000315 | Method and Device for Controlling Vibrations of a Metallurgical Vessel - In a method and a device for controlling vibrations of a metallurgical vessel that occur while gas is being injected into liquid molten metal located in the metallurgical vessel, a certain total amount of gas per unit of time is injected into the liquid molten metal, and the total amount of gas being is injected into the liquid molten metal through a number of individual nozzles in the metallurgical vessel, measured values correlating with the vibrations of the metallurgical vessel occurring are being measured during the injection, wherein while keeping the total amount of gas injected per unit of time largely constant, the amount of gas injected from individual nozzles per unit of time is changed in dependence on the measured values that are measured and correlate with the vibrations of the metallurgical vessel occurring. | 01-05-2012 |
20120266722 | METHOD AND APPARATUS FOR IMPROVED PROCESS CONTROL AND REAL-TIME DETERMINATION OF CARBON CONTENT DURING VACUUM DEGASSING OF MOLTEN METALS - Methods and apparatuses for improved process control in metal smelting through measurement of off-gas profiles in real time. A tunable laser source is projected across a volume of off-gas and detected to provide a real time profile of gas concentrations. The real time gas concentration profile may be compared with known profiles to identify problems in the smelting process or to identify when the process is complete. | 10-25-2012 |
20130333521 | METHOD OF CONTROLLING ROTATIONAL SPEED OF IMPELLER - A load current value I of a motor rotationally driving an impeller is read out when the impeller is rotated at a predetermined set rotational speed X | 12-19-2013 |
20140047951 | Method for Recovering Hard Material Particles - A process for recovering hard material particles which are present in a residue quantity, which is in a free-flowing or pourable form, of a hard metal which has a matrix consisting of a steel, nickel or a nickel alloy, in which the hard material particles are embedded, comprising the following production steps: pouring the residue quantity into an acid bath which contains a strong acid having a pK | 02-20-2014 |
20150013497 | PROCESS FOR RECOVERY OF IRON/STEEL FROM MILL SCALES AND FINES - A process for recovering iron/steel from scrap mill scales and fines is disclosed. A process in accordance with embodiments of the present invention comprises mixing mill scales and fines with coke or other carbon containing fines and sealing the mixture in a container. The container is charged into a cupola or blast furnace, where the components react to form molten iron/steel. The recovery process in accordance with an embodiment of the present invention is performed integral to cupola or blast furnace operations and the recovered metal is collected at the base of the furnace as molten iron/steel. | 01-15-2015 |
20150307960 | MAGNESIUM REFINING APPARATUS AND MAGNESIUM REFINING METHOD - A magnesium refining apparatus includes: a container that contains sample containing a magnesium compound; and a light concentrating device that concentrates sunlight to irradiate the container in order to heat an interior of the container to a predetermined temperature, wherein: the container comprises a reaction unit that is heated to the predetermined temperature by the light concentrating device to generate magnesium vapor from the sample with a thermal reduction reaction, and a condenser unit that condenses the magnesium vapor; a sunlight transmitting member is provided on a housing surface of the container, and transmits the sunlight concentrated by the light concentrating device; the reaction unit is held in the container and the sample are conveyed into the reaction unit. | 10-29-2015 |
075378000 | Pressure sensed | 1 |
20150307963 | MAGNESIUM REFINING APPARATUS AND MAGNESIUM REFINING METHOD - A magnesium refining apparatus includes: a container that contains sample containing a magnesium compound; and a light concentrating device that concentrates sunlight to irradiate the container in order to heat an interior of the container to a predetermined temperature, wherein: the container has a reaction unit that is heated to the predetermined temperature by the light concentrating device to generate magnesium vapor from the sample with a thermal reduction reaction; and the light concentrating device is constructed of Cassegrain optical system having a first mirror surface constituted by a concave mirror and a second mirror surface constituted by a convex mirror, and concentrates reflected light of the sunlight on a surface of the sample in the container by guiding the sunlight reflected at the first mirror surface to the second mirror surface and then by reflecting the reflected sunlight guided from the first mirror surface at the second mirror surface. | 10-29-2015 |
075380000 | Temperature sensed | 12 |
20080257109 | High Vacuum In-Situ Refining Method for High-Purity Materials and an Apparatus Thereof - The present invention concerns a high vacuum in-situ refining method for high-purity and superhigh-purity materials and the apparatus thereof, characterized in heating the upper part and lower part of crucible separately using double-heating-wires diffusion furnace under vacuum, thereby forming the temperature profile which is high at upper part and low at lower part of crucible, or in reverse during different stages; then heating the crucible in two steps to remove impurities with high saturation vapor pressure and low saturation vapor pressure respectively in efficiency; and obtaining high-purity materials eventually. The whole procedure is isolated from atmosphere, reducing contamination upon stuff remarkably. The present invention could provide products with high-quality and high production capacity, which are stable in performance, therefore is reliable and free from contamination. The present invention is appropriate for manufacture of high-purity and superhigh-purity materials, particularly for manufacture of high-activity high-purity materials. | 10-23-2008 |
20080282841 | Method and Device for Charging Feedstock - A method and a device for charging feedstock, in particular coke or ore, and optionally separated fines of feedstock, for processing in a metallurgical vessel, to produce metal or primary metal products. The device includes a charging mechanism, which has a conveying device and at least one feeding device for supplying to the charging mechanism. The conveying device has an outlet opening which can be guided along an inwardly directed spiral during the charging into the vessel, to set a predefined coverage in the vessel. Charged materials can thereby be positioned precisely in the vessel, and it is possible for fines to be uniformly distributed in the circumferential region. | 11-20-2008 |
20100024599 | METHOD AND DEVICE FOR PRODUCING MOLTEN MATERIAL - A method for producing molten material, wherein oxygen, reducing agents and iron that has been reduced in a reduction reactor are introduced into a melter gasifier. The reducing agent is gasified with the oxygen and the heat thereby produced melts the reduced iron. Cupola gas from the melter gasifier is used at least as a portion of the reduction gas, and reacted top gas is withdrawn from the reduction reactor. The aim of the invention is to increase energy efficiency and raw material efficiency as well as productivity while at the same time obtaining metallurgically improved properties of the product. For this purpose, at least a portion of the top gas is branched off from the line for the withdrawal of the top gas from the reduction reactor and is returned via at least one return line leading to the melter gasifier and is introduced into the melter gasifier. | 02-04-2010 |
20120279353 | SYSTEM AND METHOD FOR PRODUCING METALLIC IRON - A method for producing metallic iron including providing a hearth furnace having an entry end and a discharge end, a moveable hearth, and an exhaust stack positioned toward the entry end of the furnace, providing a carbonaceous hearth layer above the hearth, providing a layer of reducible material comprising reducing material and iron bearing material, delivering a flow of gases into the hearth furnace through burners, gas injection ports, or a combination thereof directing a flow of gases toward the entry end selected from combustible fuel, oxygen and carbon dioxide, oxygen and flue gas, oxygen and air, or a combination thereof to heat the furnace to a temperature sufficient to at least partially reduce the reducible material, increasing the velocity of the flow of gas to greater than 4 feet per second along the furnace, and heating the layer of reducible material to at least partially reduce the reducible material. | 11-08-2012 |
20150307953 | MINERAL PROCESSING - Methods and systems for processing ores by assaying the ore to determine what ore constituent has to be separated, by controlling the volume of ore processed at one time, and/or by controlling the amount of heat added to or extracted from the ore. | 10-29-2015 |
20150307954 | MINERAL PROCESSING - Methods and systems for processing ores by assaying the ore to determine what ore constituent has to be separated, by controlling the volume of ore processed at one time, and/or by controlling the amount of heat added to or extracted from the ore. | 10-29-2015 |
075381000 | Of waste gas | 1 |
20110154949 | Method for Operating a Furnace and Device for Carrying out the Method - The invention relates to a method for operating a furnace, wherein a starting material comprising at least one metal element is molten, wherein the starting material is heated by at least one burner that is operated with a fuel volume flow of a fuel and an oxidant volume flow of an oxidant. An exhaust gas temperature of the furnace is monitored in an exhaust gas line at least at one measuring point downstream of a post combustion zone, wherein in a standard operational state a target fuel volume stream and a target oxidant volume stream is fed to the burner, wherein a change of the exhaust gas temperature is recorded at predetermined time frequencies and is compared to a predetermined threshold value. The invention is characterized in that when the change of the exhaust gas temperature per time unit is greater than the threshold value, the burner is put into a reduced operational state for a predetermined time, wherein the quotient of fuel volume stream to oxidant volume stream is lowered by at least one of the following actions: A) a predetermined sudden reduction of the fuel volume stream to a reduced volume stream and B) a predetermined sudden increase of the oxidant volume stream to an increased volume stream, said quotient being reset to the standard operating state after the reduction period. | 06-30-2011 |
075382000 | Of molten metal | 3 |
20100011908 | PRESSURE CONTROL IN DIRECT SMELTING PROCESS - A process for direct smelting metalliferous feed material in a direct smelting vessel and producing process outputs of molten metal, molten slag, and an off-gas from the vessel is disclosed. The process includes controlling pressure in the direct smelting vessel by controlling off-gas pressure in an off-gas stream supplied to a fluidised bed pretreatment apparatus while the process is operating in the “hold” and “idle” process states. | 01-21-2010 |
20130180361 | DIRECT SMELTING PROCESS - A molten bath-based direct smelting process includes controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise in an operating temperature range for the process. | 07-18-2013 |
20150352635 | Method, Controller And Tundish Control System For A Continuous Casting Process - A method of controlling the temperature of molten metal in a tundish during a ladle tapping cycle in a continuous casting process. The method comprises a) obtaining a measure of a temperature of molten metal in the tundish; b) comparing the measured temperature with a desired tundish melt temperature; c) determining whether the measured temperature is lower than desired; d) controlling the temperature of the molten metal in the tundish by with a heating arrangement, and an electromagnetic stirrer which stirs the molten metal in order to distribute heated molten metal in the tundish such that the temperature of the molten metal approaches the desired temperature. | 12-10-2015 |
075383000 | Of sintered material | 2 |
20080264206 | SINTER PROCESSING SYSTEM - An apparatus and method for processing iron sinter is provided. A cooling system is arranged downstream of a furnace for cooling the iron sinter. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter. | 10-30-2008 |
20110209580 | SINTER PROCESSING SYSTEM - An apparatus and method for processing iron sinter is provided. A cooling system is arranged downstream of a furnace for cooling the iron sinter. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter. | 09-01-2011 |
075384000 | Composition sensed | 5 |
20090031857 | Method and apparatus for ore processing - Method and apparatus for determining the ore content and for further treatment of the ore, the ore content of the crushed ore being monitored in said method on-line and the information on the ore content being utilized in the further treatment of the ore. | 02-05-2009 |
20110265604 | METHOD AND DEVICE FOR CONTROLLING THE INTRODUCTION OF SEVERAL METALS INTO A CAVITY DESIGNED TO MELT SAID METALS - A method and a device control the introduction of several metals into a cavity configured to melt the metals in the form of ingots. In particular, the method is configured to control the introduction of several metals into a cavity for melting the metals so as to dip-coat a steel strip with the metals in liquid metal form. Whereby a first metal is introduced in the form of at least a first ingot having a high content of the first metal and a second metal is introduced in the form of at least a second ingot formed as an alloy of the first metal and the second metal. The second metal content of the second ingot is chosen from a range of significant contents for ensuring an intended overall flow rate for combined melting of the ingots, the range of significant contents being chosen in a limited interval of sequentially increasing values so as to minimize differences between melting points of the ingots. | 11-03-2011 |
20110296951 | Process for Controlled Oxidation of a Ferrous Solution - A process for producing a ferric containing solution by the controlled oxidation of a ferrous containing solution, said process including providing a solution containing at least ferrous ions; treating the solution with one or more inlet gases containing sulfur dioxide and oxygen in order to oxidize said ferrous ions to ferric ions, wherein the delivery rate of the sulfur dioxide gas is oxidation rate limiting; and controlling the concentration of dissolved oxygen in said solution at an optimum value. | 12-08-2011 |
20140331820 | METHOD FOR REDUCING SLAG - Disclosed herein is a method of reducing slag, including the steps of: examining the components of slag to be reduced, and setting a target composition ratio after reduction; determining the mixing ratio and input amount of a complex reducing agent of a plurality of reducing agents in accordance with the set target composition ratio to determine the complex reducing agent; and supplying the complex reducing agent into molten slag to reduce the slag. The method is advantageous in that the reduction efficiency of slag can be maximized, various kinds of reducing agents can be efficiently used, and the recovery amount of valuable metals can be increased, thus reducing cost. | 11-13-2014 |
20180023164 | METHOD FOR PRODUCING NATIONAL-STANDARD MAGNESIUM ALLOY INGOTS ON THE BASIS OF MAGNESIUM ALLOY WASTE MATERIAL | 01-25-2018 |
075386000 | Characteristic of treated material sensed (e.g., density, etc.) | 6 |
20080307926 | Method for Determining the Properties of the Content of an Arc Furnace - In a method for determining a dividedness and/or position of a batch material ( | 12-18-2008 |
20100005926 | Method And System For Recovering Metal From Processed Recycled Materials - Recovering metallic materials, such as copper, from waste materials. The A dynamic sensor measures the rate of change of current generated by metallic materials in the waste materials. Preprocessing and post processing of the waste materials may be completed to further concentrate the amount the metallic materials recovered from the waste. | 01-14-2010 |
20110107873 | METHOD OF DEGASSING MOLTEN METAL - To degas a molten metal, a receptacle containing the molten metal and a layer of slag over the molten metal is positioned in a chamber, and the chamber is evacuated. As the pressure in the chamber reduces, gas is generated at the interface between the molten metal and the slag, which causes the slag to foam. To inhibit overflowing of slag from the receptacle, a gauge outputs a signal indicative of the level of the surface of the slag, and the rate of evacuation of the chamber is reduced to reduce the rate of gas generation. | 05-12-2011 |
20110219914 | REDUCING DROSS METHOD OF LEAD-FREE SOLDER - A reducing dross method of lead-free solder includes the steps of: producing master alloy of reducing dross which comprises Sn and 0.1 to 0.8 wt % P; analyzing the percentage of P in the lead-free solder to be modified, in order to reach 0.008 to 0.015 wt % P in the lead-free solder, adding the master alloy into the lead-free solder with the percentage of P less than 0.008 wt % or no P; then sampling the lead-free solder at regular intervals to determine the percentage and the percentage loss of P, if the percentage of P being less than a given value between 0.008 to 0.015 wt %, adding the master alloy to keep the percentage of P within 0.008 to 0.015 wt %. | 09-15-2011 |
20120297928 | HEAP LEACH OPERATIONS - A method of heap leaching including forming a heap lift, installing a horizontal solution collection system between the heap layers including a horizontal tubing with a wireline data collection tool disposed therein, providing a heap leach model for modeling the heap leach operation including a solvent formulation and a irrigation setting, obtaining collected data from the wireline data collection tool while irrigating the heap lift, the collected data including in-situ material parameters of the heap layers and in-situ solution parameters of the solution flowing in the heap layers, modeling the heap leach operation using the collected data based on the heap leach model to generate a result, and adjusting the heap leach operation based on the result. | 11-29-2012 |
20160069615 | THERMAL REDUCTION APPARATUS FOR METAL PRODUCTION, GATE DEVICE, CONDENSING SYSTEM, AND CONTROL METHOD THEREOF - Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit. | 03-10-2016 |
075387000 | Flow rate sensed | 2 |
20120312124 | 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 acquisition module and a computer; charging the vessel with materials for steel making; lowering the lance into the vessel and injecting oxygen into the materials; acquiring a signal from the accelerometer indicative of lance vibration; processing the vibration signal to determine component frequencies of lance vibration; comparing the levels of the component frequencies to desired operating values; and adjusting at least one steel making process parameter based on the level of at least one of the component frequencies. The steel making process parameter to be adjusted may be oxygen flow rate through the lance. | 12-13-2012 |
20160040935 | METHOD AND ARRANGEMENT FOR FEEDING FEED MATERIAL FROM A BIN FOR FEED MATERIAL INTO A FURNACE SPACE OF A SMELTING FURNACE - The invention relates to a method and to an arrangement for feeding feed material from a bin ( | 02-11-2016 |