Fuchs Systemtechnik Gmbh

Arcmet Technologie Gmbh

Fuchs Technology Ag

Korf & Fuchs Systemtechnik Gmbh

Fuchs Recycling Gmbh & Co.

Eco-e Ag

Fuchs Technology Holding Ag

Gerhard Fuchs

Joachim Ehle

Klaus Kimmer

Ernst Wabersich

Horst-Rudiger Langfeldt

Hans-Peter Heinzelmann

Hans G Quick

Klaus Von Ploetz

Roland R Hertenstein

Helmut Karcher

To facilitate a trouble-free charging of scrap metal having differing constitutions, such as light and heavy scrap metal, from a lower discharge opening of a shaft-shaped charging device or a charging stock preheater () into a melting vessel by a pusher (), the lateral surfaces of the pusher () are formed so as to converge from the upper side to the lower side and the actuating device () of the pusher () is pivotably supported in a frame structure () about a horizontal axis. In addition, the upper boundary of the discharge opening for the charging stock from the shaft () is preferably formed by a horizontal, rotatably supported roller (), more preferably with engaging elements () distributed around the circumferential surface. Sections of the charging device that are severely mechanically stressed are preferably formed by steel billet sections connected to form a structural unit.

Charging device, especially charging stock preheater

In a metallurgical vessel ( ) having a tapping apparatus ( ) for the slag-free withdrawal of liquid metal ( ) from a molten metal bath ( ) which is disposed in the vessel ( ), a first leg ( ) of a discharge duct ( ) passes through the refractory vessel wall ( ) and an overflow edge ( ) in the connecting region of the two legs ( ) of the discharge duct ( ) is higher than the upper edge ( ) of the inlet opening ( ) of the discharge duct. The molten metal ( ) in the discharge duct is preferably inductively heatable.

Metallurgical vessel having a tapping device and method for the controlled, slag-free extraction of molten metal from said vessel

In a charging material preheater for preheating charging material ( ) which is to be charged into a furnace vessel ( ), having a shaft ( ) which is fixed in a frame structure ( ) and which in its upper region has a closeable feed opening ( ) for the charging material ( ) and a gas outlet and in its lower region a discharge opening for the charging material ( ) and a gas inlet, and whose shaft walls ( ) delimit a receiving space ( ) for the charging material ( ) to be heated, the shaft walls ( ) are subdivided into shaft wall portions which are individually replaceably fixed in the frame structure ( ).

Charging material preheater with replaceable shaft wall portions

In a tiltable arc furnace in which a furnace vessel ( ) and a portal ( ) for an electrode lifting and pivoting apparatus are arranged on a platform ( and ) of a furnace cradle which is tiltable by a tilting apparatus and which includes two mutually spaced cradle runner skids ( ) which each run on a respective support path ( ), wherein the furnace vessel ( ) is arranged on a first platform region which is between the cradle runner skids ( ) and the portal ( ) is arranged on a second platform region which is outside the cradle runner skids ( ) the two platform regions are in the form of separate platform portions ( ) which are connected together by a hinge pivot ( ), the portal platform portion ( ) carrying the portal ( ) is supported by way of a further cradle runner skid ( ) on a further rolling path ( ) and is tiltable by the tilting apparatus synchronously with the vessel platform portion ( ) carrying the furnace vessel ( ).

Tiltable arc furnace

This invention concerns a smelting installation with an electric-arc furnace in which the roof of the oven vessel is constructed out of two units (,) which are separated by an aperture (,) and can be moved independently of one another relative to the vessel horizontally. One of these units (,) consists of a shaft (,) which serves as preheater for the charge. The upper part of the vessel and the shaft (,) have a converging wall sector (,).

Smelting installation with an electric-arc furnace

Tilting metallurgical unit comprising several vessels

Charge preheater

Smelting unit with furnace rocking cradle

Smelting plant with two melting furnaces arranged in juxtaposed

Smelting plant with removable shaft-like charging material preheater

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 is connected in a region adjoining its bottom to the interior of the furnace vessel by way of a connecting zone, and in addition burners open in the lower region of the charging material preheater, in a sump mode of operation after the tapping step, of the amount of charging material which is required for the next bath of molten material, a part thereof is charged directly into the furnace vessel in order to reduce the smelting time. That part of the charging material is preheated in a preheating chamber which is connected downstream of the charging material preheater.

Method of operating a smelting unit and smelting unit for that method

A furnace vessel (301) of a metallurgical furnace, in particular an electric arc furnace, in which the tap hole (305) is arranged within a lower vessel (303) which is oval or circular in plan view, in the vicinity of the wall of the vessel, and the upper vessel (309), above the tap hole (305), includes a vessel portion (320) which is displaced or is displaceable relative to the lower vessel towards the center of the vessel and in which there is provided a maintenance opening (327) for the tap hole (305) (FIG. 11).

Vessel of a metallurgical furnace, especially of an arc furnace

For the purposes of introducing filling material which is capable of flow into a tap hole which is disposed in the edge region of the bottom of a metallurgical vessel, in particular a smelting furnace, there is provided a filling pipe which is secured to an arm which is pivotable about a pivot means mounted to the wall of the vessel. The pipe can be pivoted from a position outside the vessel through an opening in the wall of the vessel into a filling position in which the intake opening of the pipe is in communication with a container for supplying the filling material and the discharge opening of the pipe is in opposite relationship to the tap hole. The pipe is of a circularly bent configuration around the pivot axis of the arm so that the opening in the wall of the vessel can be kept small.

Apparatus for introducing filling material which is capable of flow into

An arc furnace having a space for accommodating charging material, said space being disposed on one side of the furnace vessel and communicating with the interior of the furnace vessel and being disposed at least partly in the region of radiation of the arc of at least one arc electrode. The arc electrode is movable towards and away from the charging material accommodating space, and thereby permits better utilization of the radiant heat generated by the arc.

Growing community of inventors

Kehl-Bodersweier, Germany

Gerhard Fuchs