Abstract: Device for winding a material web, particularly a metal strip, wherein a coil (1) is supported during the winding process by at least two support rollers (2, 3), wherein the support rollers (2, 3) can be jointly pivoted about a pivot axis (18) between a first, substantially horizontal, position and a second position, which is inclined relative to the horizontal position, by means of a pivoting device (11).

Abstract: In a process and apparatus for the reduction of metal oxides to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of—a gas containing carbon dioxide (CO2) and/or steam (H2O) with—gaseous hydrocarbons, the fuel gas for burners which provide the heat for the endothermal reformation processes which take place during the reformation is obtained at least partially from a partial quantity of the top gas produced during the reduction of metal oxides to form metalized material, wherein this partial quantity of the top gas, before it is used as a component of the fuel gas, is firstly subjected to dedusting and then to a CO conversion reaction, and the conversion gas obtained during the CO conversion reaction is subjected to CO2 removal after cooling.

Abstract: A method and device for producing hot-rolled products in a combined continuous casting and rolling system includes a device for separating and removing. In order to overcome a disruption in production in a part of the system located downstream of the device for separating and removing, the method includes: (a) separating the endlessly produced precursor material into a strand portion with shears; (b) clamping the strand portion; (c) raising the trailing part of the strand portion from the roller table by a raising device, so that the strand portion is drawn away from the shears in the direction of transport; (d) cutting the precursor material into a precursor material portion with the shears; (e) removing the precursor material portion from the roller table, and removing the strand portion until the combined continuous casting and rolling system is ready to operate again.

Abstract: A rolling stand is provided for producing a rolled strip having working rolls which are supported on supporting rolls or intermediate rolls and supporting rolls, wherein the working rolls and/or intermediate rolls and/or supporting rolls are arranged in the rolling stand so as to be displaceable axially relative to one another, and each roll of at least one roll pair formed from a supporting roll and a working roll or from a supporting roll and an intermediate roll has a curved contour which runs over the entire effective barrel length, wherein the contour of the supporting roll is predefined by a contour function which is formed from a superposition of a first contour function, which runs in a manner complementary to the adjacent working roll in a non-displaced state, with a superposition function which is concave or convex in relation to the supporting roll axis.

Abstract: A rolling system, particularly a cold-rolling system for cold-rolling a metal strip (2): having at least one cold-rolling stand (1) an unwinding device (3) upstream of the cold-rolling stand (1), a unit (10) connected between the unwinding device (3) and the cold-rolling stand (1), including at least three rolls (6, 7, 8) each rotationally driven about a rotational axis (6A, 7A, 8A). Each roll (6, 7, 8) can be adjusted individually or together in the direction of the respective rotational axis (6A, 7A, 8A) and in a direction transverse to the rotational axis (6A, 7A, 8A) by a driving and adjusting device (11).

Abstract: A drum (10,12) for receiving, transporting and discharging long metal products (P), such as bar or the like, preferably coming from a hot rolling mill: the drum includes at least one pair of channels (C1-C2) extending longitudinally axially and the channels being around the circumference of the drum, the channels simultaneously receive two long products (P1,P2), respectively one long product in each one of the channels that is part of the pair. Also a method and a system for handling long rolled products coming from different strands of a rolling mill are disclosed.

Abstract: A burner-lance unit (1) includes at least two gas connections (2a, 2b, 2c), a burner tube (3), and a lance tube (4) that is placed concentrically in the burner tube (3). The burner tube (3) and the lance tube (4) both have a gas inlet end and a gas outlet end (15). The lance tube (4) has a de Laval nozzle (4a) at the gas outlet end thereof. The de Laval nozzle (4a) is releasably connected to the lance tube (4). The burner tube (3) has a burner nozzle (3a) which is releasably connected to the burner tube (3).

Abstract: A method and a device for reducing iron-oxide-containing feedstocks, in which a reducing gas is fed to a reducing unit (1) containing the iron-oxide-containing feedstocks. The reducing gas is generated by introducing a process gas having reduction potential into a heating appliance (3) for heating the process gas, which is withdrawn as reducing gas therefrom. In the heating appliance (3), heat energy is transferred to the process gas. The heat energy is formed by combustion of a fuel gas containing organic substances, including coke oven gas with addition of technically pure oxygen. The flames of the combustion have an adiabatic flame temperature of above 1000° C., wherein, in the combustion of the fuel gas, at least some of the organic substances present in the fuel gas are cracked.

Abstract: A method for reducing the strip tension of a rolling stock, may include: transporting the rolling stock using a roller table between two successive rolling units, wherein a rolling stock loop is formed in a depression in a section of the roller table between the two rolling units, the rolling stock loop being supported by the roller table at least in one off-center portion of the section, wherein the supporting line of the roller table in this portion corresponds to the catenary curve of the free span; measuring a loop depth of the rolling stock loop; calculating a desired value of the loop depth that corresponds substantially to the free span, e.g., depending on the material, thickness and temperature of the rolling stock; controlling the main drives and/or the gap adjustment of the rolling units based on the desired value and the measured loop depth, such that the loop depth substantially corresponds to the desired value.

Abstract: An apparatus for removing burrs on billets has a supporting element and at least two arms extending from the supporting element. Deburring devices are driven in rotation by burrs of billets. The deburring devices are supported by the arms. The apparatus is driven rotatably and reversibly by a drive between a stand-by position wherein the apparatus is spaced apart from the billet to be deburred and a working position wherein the deburring devices are close to the billet to be deburred and are able to contact a burr.

Abstract: An arc furnace having a furnace vessel for melting steel, a cover for closing the furnace vessel and a pivot unit with which the cover can be moved away from the furnace vessel in which the furnace vessel is mounted so as to be movable in the vertical direction relative to the pivot unit, and the pivot unit has a holder for releasably fixing the cover in the vertical direction.

Abstract: A strip deflection device (1) for deflecting a strip (2), in particular a metal strip, at an angle: at least one deflecting cylinder (3) around which the strip (2) can be deflected by a deflection angle (7) while maintaining strip tension. The angle is defined by the inlet direction (14) and the outlet direction (15) of the strip (2). Rollers (20) on the circumference of the deflection cylinder (3), form bearing faces of equal height for the strip (2) along a wrap around the cylinder. The deflection cylinder (3) can be adjusted between a first (31) and a second operating position (32) preferably perpendicular by an adjusting device (16). Each operating position (31, 32) is associated with a respective arrangement (10, 11) of the rollers (20) and the rollers in that arrangement (10, 11) are oriented in a direction that corresponds to the wrap around the cylinder.

Abstract: A cooled strand guide roller (1) mounted at more than one location for guiding a metal strand (S) in a continuous casting machine, and a method for cooling a strand guide roller (1) mounted at more than one location. An internally cooled strand guide roller (1) is mounted at more than one location. The height of the strand guide roller (1) is intended to be adjustable easily and quickly. The strand guide roller (1) has a collecting bar (7) for supplying the strand guide roller (1) with cooling water. The collecting bar (7) includes a plurality of brackets (10, 10a, 10b). Between two successive brackets (10, 10a, 10b), there is at least one coolant pipe (11) for fluidically connecting the brackets (10, 10a, 10b). An outer bracket (10a) has at least one first connection (8) for internal cooling of the cooled strand guide roller (1) and at least one second connection (9) for cooling the bearing blocks (4).

Abstract: An installation for rolling a metal strip includes a rolling mill through which the strip is rolled as it passes continuously, rolling agents brought into contact with rolls of the rolling mill and with the strip, a strip drawing unit positioned at the outlet of the rolling mill, and a decontamination module with at least one degreaser positioned between the outlet of the rolling mill and the drawing unit so as to remove residual rolling agents from the strip at the outlet from the rolling mill. A strip accumulator is positioned at the outlet of at least part of the drawing unit, particularly so as to keep the speed of travel of the strip at the outlet of the accumulator below a maximum threshold. A paper-strip insertion module is positioned downstream of the outlet from the strip accumulator.

Abstract: In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a CO2 separation apparatus, the tail gas thereby obtained being fed to a waste heat steam generator and burned for additional steam generation. The combustible components of the tail gas are sent for thermal utilization in a steam generator, so that the overall energy balance of the thermal use of the export gas is improved. In addition, a further part of the export gas is qualitatively improved by the CO2 separation apparatus, so as to generate a high-quality reduction gas which can be supplied for metallurgical use.

Abstract: A device for lubricating the cylinders of a roll stand, in particular for roll nip lubrication in a roll stand for strip-shaped rolling stock. A mixture of water and oil is produced by a mixing and spraying device (1). The mixture is sprayed onto at least one of the cylinders (2) of the roll stand and/or to the surface of the rolling stock (3). The mixing and spraying device (1) include an arrangement of several nozzle mixer units (4). Water is guided thereto by a first supply line (5) and oil is guided thereto by a second supply line (6).

Abstract: A system for energy optimization in a plant (3) for producing direct-reduced metal ores (3). The plant (3) has at least one reduction unit (12), a device for separating gas mixtures (7, 7a, 7b) having an associated compressing device (4, 4a, 4b), and a gas-heating device (10) upstream of the reduction unit (12). Part of the process gases (2, 2a, 2b) is fed by a feed line from a smelting reduction plant to the plant for producing direct-reduced metal ores (3). A turbine (8, 8a, 8b) is fit between the device for separating gas mixtures (7, 7a, 7b) and the gas-heating device (10) upstream of the reduction unit (12) such that a pressure drop between the device for separating gas mixtures (7, 7a, 7b) and the reduction unit (12) is converted into forms of energy that can be used to operate additional components (4, 4a, 4b, 15, 15a, 15b) of the plant (3), in particular electrical energy and/or mechanical energy. Energy consumption of the plant (3) is reduced.

Abstract: A device and method for post-treating a metal strip, wherein a pickled metal strip (2) coming from a pickling zone is advanced continuously through a rinsing zone (4) in which residues of a pickling agent adhering to the surface (11) of the metal strip (2) are removed by spraying the metal strip with rinsing fluid. At least one device (8) for generating a liquid mist (9) is provided in the rinsing zone (4). The device (8) can moisten the surface (14) of the metal strip (2) during an interruption of the continuous operation or of a sharply reduced speed of the strip. The device (8) has mist spraying jets above the surfaces of the metal strip.

Abstract: A method of forming tailored cast blanks including determining at least one of a thickness pattern or profile pattern for a blank, generating a layout for a series of blanks having the determined thickness or profile pattern and casting a strip in accordance with the layout, including varying the caster width during casting of the strip.

Abstract: A method for introducing fine particulate material (4) of ferruginous particles into a fluidized bed reduction unit (1) having a fluidized bed (24), wherein the temperature in the fluidized bed (24) is more than 300° C., and wherein the fine particulate material (4) is introduced directly into the fluidized bed (24) and/or into a free space (25) above the fluidized bed (24) by means of a burner (2). The method may be used for producing liquid pig iron (17) or liquid steel precursor products (18) by a smelting reduction process in a smelting reduction unit (22).