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Patent Searching and Data


Matches 501 - 550 out of 3,617

Document Document Title
WO/2000/009963
Spray cooled roof assembly (100) for a metallurgical vessel, e.g. an electric arc furnace, comprising two spray cooled components (110, 120), one of which (110) covers a major portion of the furnace, and the other component of the roof a...  
WO/2000/004197
Apparatus for a metal reduction and melting process is disclosed, in which a metal and carbon containing burden (15) is heated in an induction furnace (10) comprising a heating vessel (11) in which the burden (15) can float in at least o...  
WO/2000/001996
The present invention relates to a method for estimating the electrode tip position for submerged, consumable electrodes in electric smelting furnaces. The electrode tip position for an electrode is estimated based on the position of the...  
WO/2000/001854
A vessel which produces metal from a metalliferous feed material by a direct smelting process is disclosed. The vessel contains a molten bath having a metal layer (15) and a slag layer (16) on the metal layer and has a gas continuous spa...  
WO/1999/064637
Device to deliver comburent and combustible gases, such as oxygen, methane or similar, and/or solid combustible materials inside a melting container, the device comprising a first unit (18) functioning as a burner and/or supersonic lance...  
WO/1999/061857
The invention relates to a tiltable light-arc furnace in which a furnace casing (2) and a portal (4) for an electrode lifting and pivoting device are positioned on a platform (1 and 3) of a weighing machine which can be tilted by means o...  
WO/1999/058730
In order to operate an electric arc furnace (1) in optimum conditions, especially in order to build up and maintain a certain intensity of foamed slag, the amount of slag builder fed into the furnace (1) and therefore the power consumpti...  
WO/1999/058729
An electric arc furnace (1), wherein solids are injected into the furnace chamber. The lances (9, 10, 11) are guided through the wall (12) of the electric arc furnace (1) and inserted into the wall of the furnace, whereby at least one la...  
WO/1999/054511
The invention relates to a lance for processing liquid molten metal baths located in metallurgical tanks, comprising an internal guide tube for feeding gases, more particularly oxygen, having a lance mouth for blowing the gas, wherein th...  
WO/1999/051784
Refractory lined metal melting furnace (10) for the melting and holding a plurality of molten metals or alloys of different composition comprises a melting chamber (11), a plurality of passages (26, 26') communicating with the melting ch...  
WO/1999/051065
The invention relates to a bottom for a metallurgical vessel with a direct current electric arc device, whereby the cathode of said device protrudes into the vessel and at least one anode is placed in the fire-resistant lining of said bo...  
WO/1999/050466
A metal scrap melting submergence device for a chargewell of a melting furnace comprises an open top chamber (116) including walls of a heat resistant material, an inlet (126) positioned in a side wall of the chamber, an outlet (124) pos...  
WO/1999/048637
The invention relates to a method and a device for handling molten metal baths, notably of magnesium or magnesium alloys, according to which the bath (4) is heated to casting temperature in a crucible (2) in a controlled atmosphere and d...  
WO/1999/047711
Wall structure for a metallurgical vessel at the location where the vessel wall, on the hot side, is in contact with liquid metal and/or liquid slag, in particular for the hearth of a shaft furnace, comprising a steel plate lining (2), i...  
WO/1999/047873
The present invention relates to a method for determination of the electrode tip position for consumable electrodes in electric smelting furnaces, which electrodes being submerged in the furnace charge. The voltage between two geometrica...  
WO/1999/046412
The invention relates to a method for cooling a lance provided for converting a medium into a molten mass and/or for measuring the properties of the molten mass. A gas/liquid mixture is fed as a cooling medium into a cooling circuit whic...  
WO/1999/042625
The invention relates to a charging stock preheating device for preheating a charge (60) to be charged into a furnace vessel (3) and comprising a stack (9) fixed in a frame structure (20). In its upper area the stack has a closable charg...  
WO/1999/042779
A seal for a high temperature treatment vessel, particularly those common to the steel industry, has a primary purpose to prevent gases from escaping the treatment vessel. The seal is provided by a positive gas pressure curtain barrier m...  
WO/1999/041419
A metallurgical furnace, preferably a metallurgical furnace for the production of copper, is equipped with a forebay. The forebay is in open communication with the settler of the furnace by a passageway that allows for the continuous rem...  
WO/1999/041560
Cooled roof for electric arc furnaces (20) or ladle furnaces (29), the roof being used as a covering element and including a cooling system comprising tubes fed with cooling fluid, the roof including at least a central aperture (25) for ...  
WO/1999/041561
The invention relates to a charging device for low blast furnaces, especially for arc furnaces used for producing scrap iron, which can be closed by a cover connected to a gas discharging unit and over which a charging device can be plac...  
WO/1999/030857
Specialty metals and alloys are melted in a crucible (10) typically holding no more than about 100 lbs. of metal and disposed in a furnace (2) filled with an inert gas and subjected to a vacuum in the range of about 5 % to 32 % of atmosp...  
WO/1999/031021
According to the present invention there is provided a refractory lined glass melter (10) for producing refined glass from raw glass-forming material (30) using at least one oxygen-fuel burner (34) recessed within a burner block (38) mou...  
WO/1999/029914
Disclosed is a feeding device for closed shaft furnaces that are attached to a gas extracting device, more particularly low shaft furnaces for melting steel scraps, with a conveyor device leading to the head of the upper tank of the furn...  
WO/1999/027141
The invention relates to a smelting furnace to smelt metals, especially steel scrap. The inventive furnace consists of a lower receptacle with a tap hole in the bottom and an upper receptacle which can be closed by a lid. A central pipe ...  
WO/1999/027144
The present invention relates to an operation method of furnace equipment for magnesium alloys, wherein a bath surface is covered with a protection gas containing a sulphur compound. The purpose of this invention is to reduce the product...  
WO/1999/024194
The invention relates to a method and apparatus for melting of non-ferrous metals, especially magnesium. The metal material is charged into a furnace chamber (1) and flows through openings (6; 7) in the intermediate furnace chamber walls...  
WO/1999/023264
The invention relates to a method and device for controlling the formation of foamed slag in an arc furnace (5) to which the carbon is fed in such a way that the arc is at least partially enveloped in the arc furnace (5) and an over abun...  
WO/1999/020966
A metallurgical furnace which comprises a furnace body shell, a bottom wall comprising lining bricks provided on an inner side of the furnace body shell, and a side wall comprising water-cooled metal panels provided on the inner side of ...  
WO/1999/018245
According to the invention, direct reduced iron of at least 80 wt. % and having a maximum grain size of 3 mm is smelted in an electric arc furnace. The furnace contains a bath comprised of liquid iron. During operation of the furnace, a ...  
WO/1999/018244
A method and apparatus for forming a lining on the interior faces (11) of a vessel (9) is disclosed. The method and apparatus involve installing a granular composition (4) into a gap (10) formed between the internal faces (11) of the ves...  
WO/1999/016728
The invention relates to a device for preheating charge materials (2) for a metal smelting assembly (4), comprising a feed shaft (6) for receiving the charge materials, said feed shaft having a feed opening (8) in its top area and openin...  
WO/1999/016083
A continuous sintering plant for use in sintering nuclear fuel pellets or the like, having an integrated structure where the upper part of a sintering furnace is incorporated in a glove box for maintenance use. The furnace consists of a ...  
WO/1999/013281
Cooling device with panels for electric arc furnaces, employed in an electric furnace in cooperation with the vertical sidewall located above the lower shell (11) of the furnace and/or with the roof (18), the furnace comprising a lower s...  
WO/1999/005466
A method and apparatus for producing crude liquid steel using direct reduced iron as a raw material in an electric arc furnace with an acid resistant sidewall refractory lining (32). In order to effect the more economical melting operati...  
WO/1999/004046
The invention concerns an inert tank for treating an oxidable liquid metal (3), comprising a metal tank body and lid internally protected with an inert refractory lining (1, 13), said tank body comprising a plurality of inlets and outlet...  
WO/1999/002287
Fluxless melting of magnesium (alloy) metal applying a gas mixture of dry air and SO¿2? as protection atmosphere is provided where a constant pre-set level of SO¿2? is maintained by means of two mass flowmeters where one of them is in ...  
WO/1999/001710
The invention concerns an electric-arc furnace with an off-center taphole (26) through the bottom, designed for steel making and known under the name of an EBT furnace. It is comprised of a vat (4) for receiving the metal to be melted, a...  
WO/1999/000522
In order to produce molten metal from all types of metal carriers used in metallurgy, and in particular from a wide range of quantitative combinations, an installation for producing molten metal comprises the following components: an ele...  
WO/1999/001011
Electric heating elements (14) and heaters suitable for use in molten metals such as molten aluminum are provided. An improved electric heater assembly (10) suitable for heating molten metal is disclosed. The electric heater assembly (10...  
WO/1998/055411
An apparatus (100) for melting materials is provided comprising a melter body (10) having a batch injection portion (12) including a batch inlet port (13), a batch melting portion (14) including a batch melting chamber adapted to receive...  
WO/1998/054514
A method and apparatus for operation control of a melting furnace (1) provided with an inlet (2) for burned ash (6), a cinder notch (3) for molten slag (7), and a heat source (9) for heating the supplied burned ash. The method comprises ...  
WO/1998/053261
A metallurgical furnace unit (1) includes a cylindrical furnace body (2) which is intended for rotation and/or tilting or like movement and is provided with at least one ring (7) mounted outside the furnace body (2) and functioning to en...  
WO/1998/048228
The invention concerns a method for smelting iron-based alloys in an electric furnace (10) whereby the furnace is loaded with scrap, wherein at least part of the loaded scrap is cut out inside said furnace by means of a projecting nozzle...  
WO/1998/048229
Apparatus for mounting in or on a furnace comprises fluid circulation means defining a fluid circulation path, having first and second path portions adapted, in use, to lie towards the exterior and interior of the furnace respectively.  
WO/1998/046956
System to load pre-heated scrap by means of baskets for electric arc furnace, the furnace including a movable roof (28), at least one basket (15) loaded with scrap being arranged in a lateral position near the furnace, the basket (15) be...  
WO/1998/043030
When operating an electric furnace, each electrode is surrounded by an open-ring duct, placed on the furnace roof and fixed with respect thereto, from which pressurized water is delivered, with different angles with respect to the electr...  
WO/1998/043032
Method to load scrap for electric arc furnace including at least a roof (13) associated with movable moving means (17) cooperating with second movable moving means (24), the roof (13) including at least a hole (15) to discharge the fumes...  
WO/1998/042880
Basket to manipulate scrap in cooperation with an arc furnace (11) and with means to pre-heat the scrap by means of the fumes from the fourth hole (14), the basket being able to be associated with a movable covering system (16) and inclu...  
WO/1998/036101
The invention relates to a method for positioning the mouth of a consumable lance designed to transport gases and/or solid substances in a metallurgical vessel filled with liquid metal, specially steel. Said method comprises the followin...  

Matches 501 - 550 out of 3,617