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| Number | Title | Issue Date |
| 7258831 | Injector-burner for metal melting furnaces The following invention relates to an injector-burner for applications in the metalwork field, in particular for use in electric arc furnace melting processes having a frontal head with two series of holes arranged in two concentric crowns, the inner crown of holes ... | 08/21/2007 |
| 7093457 | Annular cooler pallet construction A pallet construction for an annular cooler forms a gas permeable surface for supporting and transporting material during processing thereof. The pallet construction includes a pallet deck having a series of substantially parallel rows of spaced apart elongated slot... | 08/22/2006 |
| 6887298 | Method and equipment for smelting non-ferrous metal sulphides in a suspension smelting furnace in order to produce matte of a high non-ferrous metal content and disposable slag The present invention relates to a method and equipment, whereby matte with a high non-ferrous metal content and disposable slag are produced simultaneously in a suspension-smelting furnace from non-ferrous sulphide concentrate. According to the invention, a carbona... | 05/03/2005 |
| 6547847 | Continuous process for transforming material, yielding controlled composition products and apparatus apt to carry out such process A continuous process and apparatus for transforming, by chemico-physical reactions inside molten slag, materials to be gasified, thermally destroyed, inertized, or from which elements of commercial value are to be recovered, yielding controlled compositio... | 04/15/2003 |
| 6126891 | System for high rate cooling furnace for metal strips Rapid-cooling oven, forming part of a plant comprising various treatment stations, especially stations for the heat treatment of products in strip form, through which a metal strip runs continuously, the rapid cooling being obtained by spraying onto the s... | 10/03/2000 |
| 6071467 | Technique and apparatus for ladle cleanout An apparatus and technique for collecting fumes from a metallurgical vessel such as a ladle are disclosed. The apparatus and technique are particularly well suited for collecting fumes during a cleanout operation of one or more discharge ports along the b... | 06/06/2000 |
| 6017486 | Comprehensive fume collection system for production of leaded steel A comprehensive fume collection system, particularly adapted for the collection of lead-containing fumes or gases typically emitted during the manufacture of leaded steel, is disclosed. The preferred fume collection system comprises four sections, each se... | 01/25/2000 |
| 5961688 | Process and device for making liquid iron by non-electric and electric smelting A process and a steelmaking device for the metallurgical treatment of iron metals, especially for producing steel melts. To carry out metallurgical processing of iron metals, and especially to produce steel melts, in an energy-saving, environmentally frie... | 10/05/1999 |
| 5494263 | System for solid material charging into vertical reactors by electronic control of the exhaust gases This invention relates to a method to provide a system for solid material arging into vertical reactors by electronic control of the exhaust gases, a unique process applied for charging into vertical reactors, cupolas, ferrous and non-ferrous blast furnac... | 02/27/1996 |
| 5425229 | Process for utilizing the energy contained in the blast furnace gas of a shaft furnace The energy contained in the blast furnace gas of a shaft furnace, particularly in the blast furnace gas of a cupola furnace, is utilized by wet cleaning the blast furnace waste gas as it emerges from the shaft furnace. The pre-treated blast furnace gas is... | 06/20/1995 |
| 5393037 | Smelting unit with furnace rocking cradle A smelting unit having a furnace vessel (11) which is mounted on a furnace rocking cradle (13) and which can be closed by a cover (12), and bar electrodes (28) which can be lowered into the furnace vessel (11) and which can be raised and lowered by means ... | 02/28/1995 |
| 5316270 | Device for the charging of materials into a furnace and the preheating of these The device for charging metalliferous materials 7 into a furnace 3 compri a charging tube 1, inside which are arranged supports 8 distributed over an entire non-straight section of this, for example similarly to the stairs of a flight of stairs descendin... | 05/31/1994 |
| 5263690 | Apparatus for metallurgical treatment of molten steel A unit for the metallurgical treatment of molten steel, located in steel teeming ladles, by heating and vacuum treatment. The ladle-metallurgical treatment unit serves for the mutual treatment of steel meltings by heating and vacuum treatment. It consists... | 11/23/1993 |
| 5015288 | Gas-fired aluminum melter having recirculating molten salt bath and process A method and apparatus are provided for combusting a gaseous fuel in molten salt to generate a heated recirculating salt bath for melting aluminum. Combustion products are prevented from directly contacting aluminum. Gaseous fuel is introduced into a cham... | 05/14/1991 |
| 4878944 | Method of treating metallic oxide impregnated dust A process for treating hazardous particulate generated during a manufacturing process is provided. The process includes the steps of: passing particulate material through at least one duct toward a waste collection device; feeding an additive into the duc... | 11/07/1989 |
| 4878654 | Method for cooling gases and/or vapors from non-ferrous metal treatment plants, and the relative apparatus A method and apparatus for cooling gases and/or vapors from non-ferrous metal treatment plants, wherein gases and/or vapors which develop in the treatment region are passed parallel to a heat transfer surface consisting of one or more sets of vertical tub... | 11/07/1989 |
| 4783377 | Tundish lid A tundlish lid is described comprising a steel baseplate and refractory insulating layer. The refractory insulating layer has embedded in it a lattice, preferably of iron or steel, which is secured to retaining members themselves secured to one surface of... | 11/08/1988 |
| 4780137 | A process for producing a mixed gas In a method of producing a mixed gas from a process gas of a continuously working gasifier and a discontinuously incurred off-gas of an oxygen blowing converter, the off-gas of the refining process having the lower pressure is sucked into the process gas ... | 10/25/1988 |
| 4775134 | Arrangement for preheating scrap An arrangement for preheating scrap includes a scrap treating furnace into which at least one exhaust gas duct from a metallurgical furnace enters. In order to attain a higher efficiency in preheating, the scrap treating furnace has a through chamber for ... | 10/04/1988 |
| 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 |
| 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 |
| 4708326 | Vented pouring cup for molten metal casting A molten metal pouring cup is provided communicating with a transfer means for transferring molten metal from the pouring cup to a casting station. Vent means is provided on the pouring cup at the interface between the pouring cup and the transfer means t... | 11/24/1987 |
| 4690387 | Metallurgical plant for producing a mixed gas In a method of producing a mixed gas from a process gas of a continuously working gasifier and a discontinuously incurred off-gas of an oxygen blowing converter, the off-gas of the refining process having the lower pressure is sucked into the process gas ... | 09/01/1987 |
| 4688772 | Apparatus for sealing the skirt of a converter waste gas recovery system An apparatus for sealing the skirt of a converter waste gas recovery system is disclosed, which includes an annular flange that is mounted about the outside surface of the converter adjacent to its mouth at a point clear outside the reach of the molten sl... | 08/25/1987 |
| 4655436 | Method and apparatus for recovering and reusing energy from a melting furnace A heat recovery and storage system for use in connection with a melting furnace. In such system, heat from the exhaust gas of a melting furnace is recovered and used to preheat scrap metal and to maintain such preheated scrap metal in its preheated form u... | 04/07/1987 |
| 4629166 | Exhaust-gas treatment system for a sealed-type converter An exhaust-gas treatment system for a sealed-type converter has a hood for guiding converter exhaust gas and is provided with an emergency air admission valve device communicatively connected to the hood and comprising, essentially, a valve seat communica... | 12/16/1986 |
| 4606530 | Installation and process for continuously charging a reactor with solid material and heating said material with the gases emitted from said reactor The installation permits continuous charging of solid material (2) such as steel scrap into a reaction vessel (1) such as a converter for steel manufacture, the steel scrap being heated by heat exchange with the gases (G) emitted from the converter. To th... | 08/19/1986 |
| 4596382 | Telescopic sealing hood between converter and stack while refining iron A telescopic hood seals the coupling between the top of an oxygen converter and the stack during the melting and refining of iron in the converter.... | 06/24/1986 |
| 4575055 | Circular traveling grate machine A circular traveling grate machine includes rotatable, inner and outer, rail mounted, side frame members forming the sidewalls of an annular hearth region therebetween. A plurality of individually tiltable pallets are positioned in the hearth region and a... | 03/11/1986 |
| 4526350 | Waste gas collection device A push-pull exhaust scavenging system for removal of noxious fumes emanating from the mouth of metalurgical vessels known as converters. The converter, configured as a drum disposed for rotation about the elongate longitudinal axis includes a mouth openin... | 07/02/1985 |
| 4452434 | Combination of a smelting-furnace pouring lip and casting gutter A combination of a smelting-furnace pouring lip and casting gutter, in which the pouring lip and the casting gutter form a substantially closed system from which a discharge system arranged in connection with the smelting-furnace draws the metal vapors an... | 06/05/1984 |
| 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 |
| 4387883 | Changeover device for an installation for recovery of the gases and fumes proceeding from a converter A changeover device for an installation for recovery of the gases proceeding from a tilting converter placed in an enclosure connected to a fixed suction duct called the main suction duct. The main suction duct enables recovery of the gases which escape f... | 06/14/1983 |
| 4370154 | Gas diversion unit A unit for diversion of a gas which may be hot, dust-laden, saturated with water vapor and containing water droplets, e.g. from steelworks converters, the unit enabling at one and the same time the flow of gases which it receives tangentially and horizont... | 01/25/1983 |
| 4350280 | Smoke exhaust apparatus for a rotary welder An improved smoke exhaust apparatus for a rotary welder which comprises an elongated stationary carrier having a support member mounted thereon for rotation about an upright axis. Plenum and shroud elements are vertically spaced apart and are connected to... | 09/21/1982 |
| 4340207 | Waste heat recovery apparatus There is disclosed a process and apparatus for the recovery of heat from exhaust or waste gases having a temperature of from about 500° to about 2500° F. generated in a process operation cycling between an operational mode and in idling mode utilizing a... | 07/20/1982 |
| 4326699 | Oil-tempering apparatus for pipes Hot pipes are tempered in an oil bath contained in a tapered, covered pan; a flap is temporarily opened for feeding, but closed when oil vapor develops, to be sucked off without contaminating the environment. Pan and cover structure are supplemented to pr... | 04/27/1982 |
| 4279625 | Electrostatic system for concentrating, propelling and collecting airborne particulates for industrial furnaces A system of corona injection and repelling electrodes are positioned such that airborne particulates are charged in situ and are propelled to collecting grids above a furnace, or concentrated into particle streams directed into ventilation hoods to be col... | 07/21/1981 |
| 4256289 | Converter arrangement A converter arrangement includes a tiltable converter vessel surrounded by a casing on whose ceiling a principal discharge conduit for conducting away refining gases, and a secondary discharge conduit for conducting away the smoke forming during charging ... | 03/17/1981 |
| 4245569 | Scrubber bypass system A scrubber bypass damper comprises a plate pivotally-mounted to a shaft running across the bypass duct transverse to gas flow. The damper plate self-actuates and rotates about the shaft in response to any pressure differential established across it. A scr... | 01/20/1981 |
