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| Number | Title | Issue Date |
| 7371342 | Method for unlocking nozzles of reactors Method intended to unblock enriched air blow or reaction gases nozzles in reactors or fusion converters for mining industry pyrometallurgy CHARACTERIZED by the injection of discrete air impacts with time intervals regulated to high pressure and rate through the enri... | 05/13/2008 |
| 7276205 | Injection device and process for the injection of a fluid The invention relates to an injection device for the reliable introduction of a fluid into a metallurgical vessel having a refractory lining, the device being removably insertable in the lining; comprising a refractory first body (2) and a refractory second b... | 10/02/2007 |
| 7275453 | Analyzing apparatus and fine particle collecting apparatus A simple and convenient analyzing apparatus is provided which easily, conveniently, and efficiently collects a material in the state of fine particles adhered to a target object, extracts the object to be analyzed, and analyzes the extracted object. An apparatus for... | 10/02/2007 |
| 6790254 | Method for controlling and adjusting the concentration of a gas component in a melt and a device for carrying out the same The invention relates to a method for producing a metal alloy, in which in a vessel at overpressure a certain desired content of an alloying constituent, which is gaseous in its normal state, is fed to said metal alloy. The method is designed such that precise addit... | 09/14/2004 |
| 6767504 | Heat treatment furnace In a heat treating method and furnace used in this method which can prevent disturbance of an atmosphere gas inside a heat chamber, and can prevent deterioration of the processing quality and efficiency of work, a control section 4 first operates a vacuum pum... | 07/27/2004 |
| 6685876 | Method for automatically controlling hydraulic opener An automatic control method for a taphole opener for opening a taphole by giving impact and rotation to a drill unit holding a drilling rod and driving the drill unit forward and backward by a hydraulically driven feed motor, which method comprises the st... | 02/03/2004 |
| 6409790 | Method and apparatus for practicing carbonaceous-based metallurgy An energy efficient, coal-based method and apparatus that are environmentally friendly which produce under pressure metallized/carbon product and molten metal directly from abundant coal or other carbonaceous material, and low cost fines (or ore concentra... | 06/25/2002 |
| 6315942 | System for delivery of gas-enriched fluids A system and method for delivering a gas-supersaturated fluid comprising a fluid reservoir, a fluid pump, a gas source, a high pressure gas exchanger, and one or more arrays of capillary channels is disclosed. Suitable controls such as differential pressu... | 11/13/2001 |
| 6303073 | Metering oven The invention concerns a metering oven (1) with a vessel (12) for holding a liquid metal and with a device for detecting a liquid metal level in a vessel. A tubular probe (5) is connected to a gas source (10) for discharging a gas at a predetermined press... | 10/16/2001 |
| 5879617 | Apparatus for treating waste materials A method and apparatus for treating residual or waste materials that can be recycled energetically, especially light-weight refuse from shredders, which, reduced in size and classified, are stored in bunkers. The residual or waste material is fed by porti... | 03/09/1999 |
| 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 |
| 5599379 | Apparatus and method for recovering non-ferrous metals from hot dross Method and apparatus for recovering free aluminum from a metal bearing dross containing free aluminum metal and oxides of the metal. Hot dross is collected from a hot dross source into a vessel, and the vessel is placed into a sealable storage container. ... | 02/04/1997 |
| 5478053 | Refractory gas purging device This invention relates a refractory gas purging device for the introduction of gases through a metallurgical vessel to molten metal therein, the device having improved wear indication, safety, and performance. In particular, the refractory gas purging dev... | 12/26/1995 |
| 5443187 | Pump apparatus for pumping melt metal Molten metal is pumped from a furnace to a place where it is utilized using a gas-plunger pump having a container holding the chamber with an inlet for drawing metal from the furnace to the chamber, and with an outlet for forcing metal out of the chamber ... | 08/22/1995 |
| 5362031 | Method and apparatus for the automatic monitoring of operating safety and for controlling the progress of the process in a vacuum heat-treatment oven In a vacuum heat treating oven operating with hydrogen under pressure as the cooling medium, especially for the quenching of greatly heated metal workpieces (5), a method is provided for the automatic control of the progress of the process and for monitor... | 11/08/1994 |
| 5308043 | Top submergable lance The top-submergable injection lance has an elongate conduit which extends between upper and discharge ends and defines a bore, for the supply of reactants, through the conduit and an annular, alloy steel tip at the discharge end. The conduit comprises an ... | 05/03/1994 |
| 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 |
| 5221512 | Apparatus for preheating and removing organic materials from scrap iron This method of preheating scrap iron mixed with plastic, rubber and resinous, i.e. organic, materials and intended for electric furnaces, in particular electric arc furnaces, is characterized by transforming the plastic, rubbery or resinous and like mater... | 06/22/1993 |
| 5221513 | Apparatus and method for net shape finishing of gears An apparatus is disclosed for performing thermomechanical processing of gears in which precise control of the thermal, metallurgical and mechanical action during the forming process is maintained. The apparatus comprises an induction heating system which ... | 06/22/1993 |
| 5183495 | Method for controlling a flow rate of gas for prereducing ore and apparatus therefor A method for controlling a flow rate of gas for prereducing ore comprises the steps of prereducing ore in a prereduction furnace having a fluidized bed with a gas generated in a smelting reduction furnace and controlling a pressure of gas generated in the... | 02/02/1993 |
| 5127941 | Process and device for separating the constituents of an alloy The invention relates to a process for separating the constituents of an alloy, especially an alloy comprising a refractory base metal and at least one nonrefractory additive metal, which consists in: heating said alloy by means for preferably continuous melti... | 07/07/1992 |
| 5020778 | Apparatus for stirring molten metal The invention provides a new stirring apparatus for stirring the liquid metal contents of a furnace, particularly the shallow furnaces used in the processing of aluminum and its alloys. The apparatus consists a reservoir separate from the furnace of relat... | 06/04/1991 |
| 4940213 | Exhaust processing apparatus An exhaust processing apparatus comprises a cracking furnace for cracking and solidifying exhaust discharged from a reactor for forming crystals on a semiconductor substrate, a first collecting device for collecting relatively large components solidified ... | 07/10/1990 |
| 4813652 | Plant for effecting the controlled cooling of metal sheets The process controls the cooling of a metal sheet so as to impart thereto a predetermined crystalline structure. The sheet to be cooled is passed through a case containing a mass of regularly renewed cooling fluid. The flow of the cooling fluid is control... | 03/21/1989 |
| 4781358 | Apparatus for monitoring an article in sintering furnace An apparatus for measuring and regulating the variable pressure furnace gas chemistry is described. The apparatus uses a mass spectrometer for measurements, in the preferred form of the invention, in which gas species percent composition is obtained quant... | 11/01/1988 |
| 4767103 | Convertor pressure control device in a convertor waste gas disposing device A converter pressure control device for use in a converter waste gas disposing device wherein a calculator determines the difference between the pressure in a converter and atmospheric pressure and sets an operating parameter according to the detected dif... | 08/30/1988 |
| 4732607 | Method of controlling the stirring strength and flow rate of a jet of gas blown through a lance onto a molten metal surface A method of controlling independently of each other the stirring strength of a jet of oxygen gas and the flow rate of the oxygen gas to be blown onto a molten metal bath in a top-blowing oxygen furnace is disclosed. The method comprises providing an oxyge... | 03/22/1988 |
| 4691898 | Continuous annealing furnace for metallic strip A continuous annealing furnace for a metallic strip, wherein each of a direct firing type non-oxidizing furnace and a forced convection type preheating zone is vertically disposed, with an inlet portion of the former being connected to an outlet portion o... | 09/08/1987 |
| 4688039 | Heat-insulated telemetry system for vacuum furnace A heat-insulating box houses a telemetry system of high accuracy for use within a high-temperature vacuum furnace. The container includes an inner box formed by a block of rigid heat-insulating material having a cavity which contains a telemetry system ch... | 08/18/1987 |
| 4676107 | Pressure sensing probe A pressure probe for an arc furnace having a roof provided with an access opening. The probe is located above the opening and includes side and end walls defining a bottom periphery for sealing the opening and an upper periphery which is sealed by a remov... | 06/30/1987 |
| 4668285 | Process and installation for the continuous control of a blast-furnace This process and this installation permit taking samples of blast-furnace gas from a series of orifices (T1, T2 . . . ) located at different levels along a generatrix of the body of the blast-furnace. There are performed, in sequence, operations for prepa... | 05/26/1987 |
| 4647017 | Vacuum heat treating furnace and quench system with drop transfer A vacuum heat treating furnace and quench system in which a load hanger rod with attached load is suspended vertically from the vacuum chamber top cover assembly, and at the end of the heating cycle segment is unlatched and permitted to free-fall through ... | 03/03/1987 |
| 4564174 | Device for the recovery of mercury This process enables the recovery of mercury from waste containing plastic material, e.g. batteries. The waste is slowly heated while an inert gas is being introduced in a vacuum for fractionating extraction of the products of the decomposition of the pla... | 01/14/1986 |
| 4559062 | Apparatus for gasification of solid carbonaceous material A gasification apparatus utilizing a molten metal bath is disclosed. The apparatus comprises: a gasification chamber of the closed type, which is provided with a product gas recovery port and at least one top-blowing lance, and which maintains said molten... | 12/17/1985 |
| 4521226 | Method of automatically controlling a dust-collecting plant For a dust-collecting plant, in which a plurality of gas streams are sucked from spaced apart dust sources and are delivered in a manifold to a dust-collecting unit and the gas is delivered by a controllable exhaust fan to an exhaust gas chimney, a method... | 06/04/1985 |
| 4491302 | Hot isostatic pressing apparatus A hot isostatic pressing apparatus which includes a pressure vessel, a heater and a heat-insulating layer interposed between the pressure vessel and heater. The heat-insulating layer is formed of at least two layers, i.e., an inner layer and outer layer. ... | 01/01/1985 |
| 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 |
| 4427183 | Gas control system for steel-making converters A system for evacuating gases from a top blown steel making converter measures any actual value pressure in a chamber between the seal of a closure ring and duct on which this ring is mounted for movement toward and away from the converter mouth, thereby ... | 01/24/1984 |
| 4415142 | Apparatus for handling converter gas An apparatus for the handling of converter gases, especially the storage thereof, comprises a hood which fits over the mouth of a steel making converter and is connected by a duct and blower to a storage vessel. According to the invention, between the blo... | 11/15/1983 |
| 4415362 | Nodular iron making and/or storing A melt of magnesium-containing nodular iron partially fills an enclosure forming a space above the melt which fills with the vapor of magnesium evaporated from the melt. Magnesium is fed into the space where the magnesium vaporizes and increases the vapor... | 11/15/1983 |
