Matches 1 - 50 out of 85 1 2 >
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6801563 Apparatus to manipulate scrap in a scrap charger  
A scrap charging apparatus for an electric arc furnace includes a scrap holding bunker having diverging side walls extending between end walls separated by a scrap discharge opening supplying scrap...
6438154 Method and apparatus for recovering metal values from liquid slag an baghouse dust of an electric arc furnace  
An apparatus and method for processing liquid slag and baghouse dust from a steelmaking furnace such as an EAF to recover valuable metals from the slag and dust includes a treatment vessel having a...
6389054 Scrap charger  
A scrap charging apparatus for an electric arc furnace uses a skip hoist to supply scrap to a holding bunker having diverging end walls extending between converging side walls. The containment...
6347110 Charging device for low blast furnaces  
A feeding device for low shaft furnaces, in particular for arc furnaces for melting scrap, it being possible for the furnaces to be closed by a cover connected to a gas-extracting device, and it...
6335945 Electric ARC low-shaft smelting furnace with a central tube with telescopic electrodes and a sliding upper receptacle lid  
A smelting furnace system for smelting metals, especially steel scrap, with a lower furnace vessel, in the bottom of which a tap hole is provided, and with an upper furnace vessel, which can be...
6269112 Electric arc furnace for continuous charging with ferrous materials and semicontinuous tapping of molten steel  
This invention is an electric arc furnace that can be continuously charged with ferrous materials, that can continuously melt the incoming charged materials, and that can semicontinuously tap...
6235075 Method and device for producing silicon-rich foundry iron  
Disclosed is a process and apparatus for generating high-silicon foundry pig iron. In the process: a) silicon oxides and iron-carbon metals are charged in a shaft furnace; b) the charge is...
6155765 Bulk loader  
The present invention is a bulk loader apparatus for providing bulk material through an open roof of an electric arc furnace. The bulk loader apparatus is a base, a swing arm pivotally connected to...
6004504 Method and apparatus for controlling bath level and measurement of bath characteristics  
A method and apparatus for improved control of continuous electric arc furnace steelmaking in which a charge velocity detector measures charge velocity of metallic charge introduced to the furnace....
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...
5812587 Apparatus and method for the supply of molten metal  
The present invention is concerned with an apparatus for supply of molten metal including a holding furnace pivotable about an axis having a metal chamber for holding molten metal, an outlet for...
5533043 Installation for producing liquid metal by melting scrap iron  
An installation for the production of liquid metal by melting a charge of ferrous material, comprising at least one electric melting furnace consisting of a chamber closed by a removable roof and...
5513206 Apparatus for preheating and charging scrap materials  
An apparatus for preheating and charging scrap material includes a throat section (38) having at one end thereof a material charging inlet (37) connected to a furnace shell (2), the throat section...
5500870 Process and device for the extraction of valuable substances  
A process and melting furnace unit are provided for extracting valuable substances by reducing oxygen-bound metals which process includes exposing a charge in a first reaction zone of a furnace...
5479435 DC arc furnace  
Provided are a furnace shell with a lower electrode at a bottom of the shell, a furnace roof adapted to close an upper portion of the furnace shell, a material charge port substantially at a center...
5410566 Method of producing metal melts and an electric arc furnace therefor  
In a method of producing metal melts, in particular a steel melt from scrap, in an electric arc furnace having at least one graphite electrode, organic substances are charged into the electric arc...
5375139 Electric arc furnace insitu scrap preheating process  
The present invention discloses an electric arc furnace wherein the natural gas flow is artificially altered to obtain beneficial effects. By injecting gases, preferably but not necessarily...
5218617 Apparatus for feeding iron-bearing materials to metallurgical furnaces  
A method and apparatus for feeding iron-bearing particles into a metallurgical furnace such as an electric arc furnace, comprising a vessel for containing a bath of molten iron, having a wall...
5153894 Smelting plant with removable shaft-like charging material preheater  
This invention is directed to a smelting plant with shaft-like charging material preheater. In a smelting plant with an electric arc furnace (1) and a charging material preheater (2) of shaft...
5117438 Method of operating a smelting unit and smelting unit for that method  
In a smelting unit comprising an arc furnace and at least one shaft-like charging material preheater which is arranged laterally on the furnace vessel of the arc furnace and the interior of which...
5046145 Improved arc reactor with advanceable electrode  
There is disclosed an arc reactor for treating a material in powder form conductive at very high temperatures, the reactor comprising a vertical electrically insulated sleeve cylindrical in shape,...
4995051 Smelting furnace and method for feeding material to be processed therein  
The invention relates to a smelting furnace, particularly a D.C. arc furnace, suited for the treatment of finely-divided material, which comprises at least three electrodes suspended through the...
4870655 Apparatus for recovery of metallics and non-metallics from spent catalysts  
An electric arc furnace includes a crucible having a metal shell for recovering precious metals from spent material. The shell includes a metal tap hole and a slag door positioned above and...
4866731 Electric furnace arrangement  
An electric furnace includes a furnace vessel covered by a furnace lid liftable and lowerable by a lid lifting mechanism and pivotable from a position above the furnace vessel into a position...
4763337 Process for melting particulate material  
In order to melt particulate material in an electric furnace with the help of at least one electric arc burning between a burner electrode arranged in the lid of the furnace and a bottom electrode...
4702461 Charging electro furnaces  
An electro furnace for metallurgic operations has its top connected to a vertically extending cylinder, into which a charge pipe leads at an oblique angle. A ceramic plug glides in the cylinder in...
4697274 Electric melting furnace arrangement as well as a method of influencing the composition of a mineral melt for producing wool  
An electric melting furnace arrangement for the continuous melting of spinnable mineral fine-particle or granular materials has a refractorily lined furnace vessel, a plurality of electrodes...
4694465 Apparatus for automatically charging scrap into an arc furnace  
An apparatus for automatically charging scrap into an arc furnace wherein an inactive position at which a scrap bucket charged with the scrap is normally placed is provided adjacent to the arc...
4674102 Electric arc furnace  
For the purposes of charging an electric arc furnace the cover (3) of the furnace is lifted somewhat and, being held by a cover carrier mechanism (10, 11), pivoted to the side. The cover carrier...
4662526 Hoisting mechanism for the cover of a furnace  
A hoisting mechanism for handling the cover of an electric arc furnace comprises a pivotable gantry base and gantry arms connected thereto which extend over the furnace cover. Traverse bars overlay...
4653065 Preheating mechanism for use with duplex electric-arc furnace system  
A preheating mechanism for use with a duplex electric-arc furnace system is disclosed. The mechanism comprises a car travelling in a direction parallel to the straight line connecting the centers...
4617672 Electric furnace arrangement  
Electric furnace arrangement including a furnace vessel with liftable and lowerable lid penetrated by at least one electrode. The electrode is fastened to a liftable and lowerable supporting...
4569057 Material feed system for smelting furnaces  
A feed system for a smelting furnace having a plurality of feed chutes arranged in a spaced apart, circular array. The feed system includes a circular conveyor mounted adjacent the furnace and...
4537551 Method and means of charging electrothermic smelting furnaces  
In charging electrothermic smelting furnaces the charge is fed batchwise to the furnace pot through annular charging units arranged more or less concentrically around each electrode. The charge is...
4476564 Gas exhaust nozzle for arc furnaces  
Arc furnace has a furnace shell, a furnace lid with lid ring and a lid lifting and swivelling means as well as a lid opening in the furnace lid for exhausting the flue gas from the interior of the...
4468164 Method and apparatus for feeding raw material to a furnace  
The feeding of batch material to a melting furnace is disclosed. The batch materials are choke fed to keep the total batch crust plus molten glass depth constant. The batch level keeps the arc...
4455660 Inclined arrangement of the support surfaces of a furnace body and furnace lid for electric arc furnaces  
In order to move a furnace body (1) and a furnace lid (2) relative to one another by approximately one furnace body width, the separating surfaces of the furnace body (1) and furnace lid (2) are...
4451925 Charging system for electric arc furnaces  
An arrangement for charging an electric arc furnace with a relatively free-flowing charge of sponge iron or other iron-containing particles distributes the charge of particles within the furnace...
4435815 Method and apparatus for charging a furnace  
The invention relates to a method and apparatus for charging an electric smelting or reduction furnace. In accordance with the invention, a charge tube movable within the roof or smoke hood of the...
4423515 Electric furnace  
In an electric furnace a lifting means actuating the furnace cover includes a king post supported on the base. The king post is surrounded by a sleeve, which is liftable and lowerable relative to...
4402083 Electric smelting furnace and associated charging equipment and bins  
To save space in furnace installations and obtain an optimum continuous charging, an arrangement is disclosed in which electric smelting furnaces are arranged in a furnace bay unilaterally, close...
4395023 Shroud for steel making electric-arc furnace  
This invention relates to a shroud for a steel making electric-arc furnace which surrounds the electric-arc furnace main body for sound- and dust-proofing, having doors provided in the side wall of...
4393507 Method and apparatus for charging lime into an electric arc furnace  
Particulate lime is discharged from a nozzle into an electric arc furnace through an inlet port in the roof or top of the furnace. The inlet port is laterally displaced from the electrode ports in...
4347614 Apparatus for refining ferrosilicon  
A gas having high CO content evolved at reaction zone in a ferrosilicon-refining electric furnace is burned and deflected to wipe transversely on the top level of the charged raw materials with the...
4252559 Process for processing cast iron suitable for foundry moulding  
The process comprising supplying an electric arc furnace with ferrous products and fluxes so as to form a bath of metal and slag and adding carbon to the bath of metal. The ferrous products are...
4210315 Means for producing a suspension of a powdery substance and a reaction gas  
A suspension of a powdery substance and a reaction gas is formed by allowing the powdery substance to fall as an annular flow into a reaction space, feeding the reaction gas downwardly to encircle...
4181812 Iron oxide melt reduction furnace and method  
An iron oxide melt reduction furnace has a hearth with a raised periphery forming an annular shelf, the hearth holding a carbonaceous iron melt up to a level forming a thin layer on the shelf. The...
4166192 Matte smelting  
Improvements in matte smelting are disclosed. A circular furnace is formed having a concave bottom, the radius of curvature of the bottom being no greater than the diameter of the circular furnace....
4160869 Continuous charging apparatus  
This invention relates to continuous charging apparatus and in particular provides a gravity feed chute (8,9) for the particulate feedstock secured to the furnace roof (1) and which communicates...
4098603 Method for melting steel  
A process and apparatus are provided for producing steel of more uniform grade on a continuous basis by maintaining a comparatively thick slag layer and a larger quantity of molten steel product in...
Matches 1 - 50 out of 85 1 2 >