Abstract: A hot strip coiler furnace is disclosed, which comprises a furnace hood, a drivable coiler drum, which is accommodated in the furnace hood and has a strip-receiving opening for receiving the leading end of the incoming strip, and a strip-receiving guide, which has a delivery end adjacent to the strip-receiving opening of the coiler drum when it is in a strip-receiving position. In order to permit the hot strip to be completely pulled into the coiler furnace, it is proposed that a strip-delivering guide for the outgoing strip is provided, which guide protrudes or is adapted to be introduced into the generally triangular space which is defined by the coil of strip and the incoming or outgoing strip.

Abstract: In a device for controlling a plug (5) of a metallurgical vessel (1), in particular a distributing launder of a continuous casting installation, with a plug (5), which can be raised and lowered and which is supported in a support frame which is movable relative to the metallurgical vessel (1), the support frame for the plug (5), which can be raised and lowered, is supported outside of the metallurgical vessel (1) displaceable in a direction crosswise to the lifting direction of the plug (5) and can be releasably locked together with the metallurgical vessel. By means of this a simple separation of the plug mechanism (9) and the metallurgical vessel (1) is possible without operational elaboration and an exchange of the metallurgical vessel (1), for example, is made possible without having to dismantle the entire plug mechanism (5, 9).

Abstract: There is provided a starter bar head for a continuous caster, which includes a lower part capable of being introduced into the mold cavity of a continuous casting mold at least partially and on whose upper surface at least one re-entrant groove is provided, and a sealing mat of refractory material whose peripheral edge is placeable into contact with the mold side walls. At least one connection element having a projection reaching into the mold cavity is fastenable to the lower part and is connectable with the cast strand by casting-on. In order to enable the easy detachment of the starter bar from the cast strand and to be able to assemble the starter bar head in a simple manner, the connection element includes two superimposed plates, the upper plate being provided with the projection and the lower plate being clampable relative to the upper plate upon insertion of the sealing mat.

Abstract: A process for cooling and cleaning hot gas containing ultrafine particles exhausted from a coal gasification plant, a blast furnace, or the like. The process utilizes a vertical saturation stage to enrich the gas stream with water vapor and thereby saturate the ultrafine particles contained in the gas stream. The resulting mixture of particles, exhaust gas, water vapor, and water is then directed through a packing prewasher and then an annular clearance washer for removal of the particles through the rapid condensation of the water vapor. The water and particles are separated from the gas stream in several stages throughout the process resulting in a final gas exhaust stream with a significantly lower ultrafine particle content.

Abstract: In a process for the direct reduction of particulate iron-oxide-containing material by the fluidized bed method, reformed gas is mixed with top gas forming in the direct reduction of the iron-oxide-containing material and is fed to a fluidized-bed reduction zone as a reducing gas. To lower the energy demand and utilizing the potential of the reducing gas, both the top gas and the reformed gas are subjected to CO.sub.2 scrubbing and the reducing gas formed by mixing top gas with reformed gas is adjusted to an H.sub.2 content ranging between 45 and 75%, preferably between 50 and 65%, and to a CO content ranging between 10 and 20%.

Abstract: An apparatus is provided for continuously shaping a metal tube by means of shaping rollers, which are arranged around the tube and consist of pairs of rollers disposed on opposite sides of the axis of the tube. It is desired to permit an adaptation of the apparatus to tubes which differ in size and in final shape. This is accomplished in that each shaping roller is radially adjustable relative to the tube and is mounted to be pivotally movable about a pivotal axis which is parallel to the axis of the tube. Said pivotal axis extends through the center of curvature of an arc of a circle which is at least approximated by that portion of the rolling contour which is defined by said shaping roller or said pivotal axis is spaced from said center of curvature in a direction which is parallel to the axis of said shaping roller.

Abstract: 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 through a central longitudinal recess of the graphite electrode so as to reduce electrode consumption.

Abstract: A direct current arc furnace is described with a cathodic electrode held in the center of the melting vessel and an anodic bottom electrode arrangement in the vicinity of an electrically conductive lower vessel from the vessel wall to the melt. The current supply and removal takes place on one side via leads to a rectifier power supply set up in spaced manner alongside the furnace. The lower vessel is connected in several quadrants with leads and in the vicinity of each quadrant a connecting plate is provided on the furnace wall. Close below the arc the power supplies are led in a horizontal plane to the furnace wall. The current intensity for the quadrants of the lower vessel adjacent to the rectifier power supplies is lower than that of the power supplies to the remaining quadrants. The spacings of the connecting plates for the quadrant areas can be unequal.

Abstract: In a process for the production of a metal melt in a metallurgical vessel, the filter dusts incurring in producing the metal melt are to be processed to charging substances without causing a load on the environment and without great expenditures.This is achieved in that the filter dusts are introduced into the metallurgical vessel by aid of a gaseous conveying medium composed of natural gas or a mixed gas primarily containing natural gas, the filter dusts being supplied to the metallurgical vessel in a closed system and reduced by the carrier gas.

Abstract: An anode for a direct current arc furnace is proposed, in which at least part of the area of the furnace receiving the melt is provided on the inside with an electrically conductive refractory lining, which is electrically connected to the conductor located on the outside and in which a cathode is positioned vertically above the melt. The electrically conductive lining (3, 4; 9) and/or the conductor (1, 8) have varying values with respect to their electrical characteristics in the circumferential direction relative to the vertical axis of the cathode (2; 11), so that there is a planned, asymmetrical current distribution on the furnace bottom.

Abstract: A tiltable converter arrangement is disclosed in which a converter vessel is supported by a carrying ring surrounding and spaced from the converter. The carrying ring includes two diametrically oppositely arranged carrying trunnions. The converter is supported within the carrying ring by a plurality of guide rods, the converter being movable in the upright position. Each of the guide rods is designed as a pendulum rod each have a first end and a second end in which the first end is connected to the carrying ring by means of a spherical bearing and the second end connected to the converter vessel also by means of a spherical bearing, such as to provide an articulate universal joint between the carrying ring and the converter vessel.

Abstract: The invention relates to a process for drying coal with a natural moisture content, which is supplied to melt-down or coal gasifiers, in which drying takes place by means of the excess energy obtained on coupling to a gas turbine power station. The excess energy is supplied by means of a fluid to at least one drier by heat release from at least one auxiliary unit ensuring or improving energy generation.

Abstract: In a method of disposing of organic and inorganic substances, the substances are gasified and decomposed in and/or above a liquid bath of a metal alloy under negative pressure, off-gases forming are seized, collected and purified and separated.To prevent the formation of health-endangering emissions, such as dioxins and furans, and to recover pure starting materials for the production of organic substances, the substances are charged under negative pressure into an induction furnace containing a melt (18) of an iron alloy, in particular a steel melt, and are decomposed in the latter at liquid steel temperature, whereby the entry of gaseous O.sub.2 is avoided.This is also the case at the production of steel from scrap interspersed with organic substances.

Abstract: In a plant including a shaft, which, in its upper end region, includes a gas exhaust device and a charging arrangement for continuously charging bulk material, a temperature measuring device for measuring the temperature of the gas emerging from the bulk material is provided. In order to ensure the uniform treatment of the bulk material, i.e., a uniform gas passage through the same over the entire cross section of the shaft at little structural expenditures, several temperature measuring devices are provided in the upper end region of the shaft, distributed in a cross sectional plane, and the charging arrangement includes several tubular mouth pieces for forming at least one conical pile within the shaft, which are adjustable relative to the shaft cross section in the radial direction.

Abstract: An arrangement for introducing and removing a lance into and out of a tiltable metallurgical vessel has drive means stationarily arranged in the direction of the lance axis and means for pivotal mounting of the drive means. The lance is designed as a guide and is guided by the drive means and is movable in the direction of its axis. In a method using the above arrangement for positioning the lance relative to the metallurgical vessel, the actual position of the vessel is taken up by a position transmitter on said vessel, and the drive means is actuated to position the lance in dependence on that actual position.

Abstract: A direct-current electric arc furnace has an at least one electric arc electrode switched as a cathode and a bottom electrode switched as an anode. The bottom electrode includes an electrically conductive bottom plate, a first ramming mass consisting of electrically non-conducting refractory material centrally located atop the electrically conductive bottom plate, and a second ramming mass consisting of electrically non-conducting refractory material, the second ramming mass being located atop and about a periphery of the electrically conductive bottom plate.A plurality of concentrically arranged electrode segments are positioned between the first and second ramming masses, each of the plurality of electrode segments including an electrically non-conducting ramming mass configured to support a plurality of vertically arranged and electrically conducting segment conductors.

Abstract: A process for producing pig iron is described, which contains a reducing shaft furnace 1 and a melting gasifier 2. The sponge iron produced from iron ores in the reducing shaft furnace is supplied to the melting gasifier and converted there into a pig iron melt. The gas produced in the melting gasifier is supplied directly via a line 4 as reducing gas to the reducing shaft furnace. The blast furnace gas passing out of the reducing shaft furnace, after traversing a CO.sub.2 scrubber 6, is at least partly heated in a heat exchanger to 200.degree. to 500.degree. C. and passed to a partial combustion plant 13 where, accompanied by the addition of oxygen, the gas is heated to the necessary reducing temperature.

Abstract: There are disclosed a method and an arrangement for preventing the agglomeration of crusts in a lance opening passing a wall of a metallurgical vessel and provided for a lance carrying a measuring and/or sampling probe. During the metallurgical process proceeding within the metallurgical vessel and during the taking of a measurement and/or sample by means of a lance introduced into the metallurgical vessel through the lance opening, a gas that is inert relative to a melt bath contained in the metallurgical vessel, or air, is injected into the lance opening from outside, which gas produces a gas veil at the mouth of the lance opening facing the melt bath.

Abstract: The invention relates to a process for the treatment of wash water from the gas washing system of an iron ore reduction plant, the wash water being brought into direct contact with dust-laden gas in a gas washer, is removed from the latter and after solids separation is again supplied in cooled form to the gas washer.

Abstract: A lining for a direct-current electric-arc furnace, in which at least part of that regions of said furnace which receives the melt is provided on the inside with an electrically conductive, refractory brick lining and a ring-shaped current conductor, on its outside, constitutes the opposite pole to the upper electrode centrally extending into said surface. The entire bottom area is covered with a refractory, insulating brick lining and a brick lining of graphite bricks is applied onto that brick lining in the radially outer wall region of the furnace. Located adjacent thereto in radially inward manner is an annular zone, comprising an electrically conductive, refractory brick lining. The central bottom area above said insulating brick lining is consittuted by a monolithic ramming mass. Furthermore, the material of the wall of said furnace above said brick lining of graphite bricks largely corresponds to that of said insulating brick lining at the hearth bottom.