Patents Assigned to Paul Wurth, S.A.
  • Patent number: 11377701
    Abstract: A shaft furnace, in particular a blast furnace, includes a metal jacket defining the furnace outer wall and a protective layer protecting the inner surface of the outer wall. At least one condition monitoring probe is arranged inside within the protective layer to monitor the latter. The condition monitoring probe is connected to a wireless module arranged outside the outer wall to transmit condition monitoring data. The wireless module is located inside a casing mounted to the outer surface of the metal jacket. The condition monitoring probe includes one or more conductive loops positioned at predetermined depths below the front face of the cooling plate body, or of the refractory lining, so that wear of the body, resp. refractory, can be detected by a change of an electrical characteristic of the loop(s) due to abrasion.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: July 5, 2022
    Assignee: PAUL WURTH S.A.
    Inventors: Christian De Gruiter, Yves Heinen, Nicolas Maggioli, Paul Tockert
  • Patent number: 11332673
    Abstract: A method of charging a coke oven with coal includes the steps of charging coal in a coke oven chamber, whereby a heap of coal forms in the chamber; and leveling the heap of coal, where the leveling step includes: introducing a blasting end of a blasting pipe into the heap of coal, the blasting pipe being in communication with a pressurized gas storage vessel configured to release gas blasts; releasing at least one gas blast through the blasting end in the heap of coal in order to cause a leveling thereof; removing the blasting pipe from the chamber.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: May 17, 2022
    Assignee: PAUL WURTH S.A.
    Inventors: Stefan Schons, Patrick Hutmacher, Paul Tockert
  • Patent number: 11268764
    Abstract: A device for mounting and/or dismantling staves on/from an inner wall of a shaft furnace, the device including a circular monorail for supporting at least one stave positioning hoist, where the monorail is divided into at least four separate arc portions, where each arc portion is connected to a neighboring arc portion by means of a rotatable connection, the arc portions are moveable between an unfolded position, in which the arc portions form a circular monorail, and a folded position, in which the overall size of the monorail is, in one direction, reduced.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: March 8, 2022
    Assignee: PAUL WURTH S.A.
    Inventor: Nicolas Maggioli
  • Patent number: 11225694
    Abstract: A cooling panel for a metallurgical furnace includes a body with a front face and an opposite rear face, a top face and an opposite bottom face and two opposite side faces. The body has at least one cooling channel therein, the cooling channel having openings in the rear face; wherein, in use, the front face of the body is turned towards a furnace interior. According to the invention, the cooling panel having at least one cooling pipe arranged in at least one elongate recess formed in the front face, where the cooling pipe has an elongate middle section and at either end thereof, an angled branch, the cooling pipe forming the cooling channel, and where the cooling pipe is arranged in the elongate recess such that the angled branches protrude through the openings in the rear face of the body.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: January 18, 2022
    Assignee: PAUL WURTH S.A.
    Inventors: Giang Kien Ly, Nicolas Maggioli
  • Patent number: 11199359
    Abstract: A sealing valve arrangement for a shaft furnace charging installation including a shutter that cooperates with a valve seat and a shutter-actuating device for moving the shutter between a closed position in sealing contact with the valve seat and an open position remote from the valve seat, where the shutter-actuating device includes a tilting shaft connected to the shutter, an electric motor with an output shaft connected to the tilting shaft, and a braking device associated with the electric motor, where the braking device is configured for, when engaged, preventing the output shaft of the electric motor from rotating, the shutter-actuating device further including a transmission means arranged between the output shaft of the electric motor and the tilting shaft, wherein the transmission means is configured for transmitting rotational movement of the output shaft of the electric motor to the tilting shaft, where the transmission means includes a backlash configured for having a predetermined amount of allow
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: December 14, 2021
    Assignee: PAUL WURTH S.A.
    Inventors: Charles Steichen, Patrick Hutmacher, Paul Tockert
  • Patent number: 11142803
    Abstract: A stockhouse arrangement for a metallurgical furnace includes a set of storage bins granular material; a material feeding device associated with the set of storage bins, the material feeding device being arranged above the set of storage bins and allowing to selectively fill each of the storage bins with granular material; and a raw material feed system to convey raw granular material to the material feeding device, wherein a respective weighing hopper is arranged downstream of each storage bin and including an outlet associated with a feeding gate, and a charge conveying system is provided for collecting and conveying material selectively discharged from the weighing hoppers through their respective feeding gate, the material feeding device being configured to screen raw granular material arriving from the raw material feed system such that only material with desired granulometry is forwarded to the respective bin(s).
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 12, 2021
    Assignee: PAUL WURTH S.A.
    Inventors: Giovanni Pongiglione, Aldo Castellani
  • Patent number: 11117746
    Abstract: A transfer or distribution chute for conveying bulk material by gravity flow includes an elongated chute casing defining a flow path for bulk material and a wear-resistant lining arrangement covering at least part of a flow path facing an upper side of the elongated chute casing. The wear-resistant lining arrangement includes a perforated plate affixed to the chute casing and has a plurality of perforations through which wear-resistant inserts having a body and an enlarged base are fitted in the perforations from a side opposite the flow path, such that their body protrudes through the perforation within the flow path, and their enlarged base abuts the borders of the perforation from the side opposite the flow path on one side and is held in place by the chute casing on the other side.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: September 14, 2021
    Assignee: PAUL WURTH S.A.
    Inventors: Eric Biehler, Christian De Gruiter, Paul Tockert, Fabien Aldegani
  • Patent number: 11021764
    Abstract: Extraction device for extracting a tuyere part, in particular a tuyere or a tuyere cooler, from a shaft furnace, the device including a supporting frame with positioning elements configured to position the device against a furnace wall, a carriage supported by the supporting frame and movable in a direction radial to the furnace wall, an extraction rod having a first end attached to the carriage and a second end for connecting to the tuyere part, where the first end of the extraction rod had a stopper, the device further including a percussion system acting on the stopper of the extraction rod in a direction away from the furnace wall, and a pretensioning mechanism on the supporting frame configured to apply a load to the carriage, in a direction away from the furnace wall.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: June 1, 2021
    Assignee: PAUL WURTH S.A.
    Inventor: Claude Thinnes
  • Patent number: 10823506
    Abstract: An installation for distribution of granular or powder material via pneumatic transport comprising at least one dispensing hopper (3) for temporary storage of said granular or powder material, the dispensing hopper being suited to being, alternately, pressurized for emptying the dispensing hopper and depressurized to permit filling thereof, and a device for depressurizing said dispensing hopper. The depressurizing device comprises a depressurizing duct (12) connected to said dispensing hopper, a bag filter (11), having a maximum operating flow rate, connected to the depressurizing duct, and flow control means (15) for controlling the flow rate in said depressurizing duct through the bag filter. The bag filter (11) is suited to operating under pressure, and the flow control means (15) are located on the depressurizing duct (12) downstream of the bag filter (11) and are arranged to provide a flow rate which is at most equal to the maximum flow rate of the bag filter.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 3, 2020
    Assignee: PAUL WURTH S.A.
    Inventors: Pierre Mahowald, Ben Muller, Louis Schmit
  • Patent number: 10823507
    Abstract: A Material hopper, in particular for a blast furnace, includes a containing hollow shell for storing material, the shell having an upper shell part with an inlet portion and an asymmetric funnel-shaped lower shell part with an outlet portion, a wear plate arrangement covers at least part of an inner wall of the lower shell part, the wear plate arrangement having a plurality of wear plates arranged adjacent to one another in a plurality of rows stacked along the inner wall, the wear plates being arranged in rows that follow parallel mounting lines that are defined by the intersection of the lower shell part with planes perpendicular to the axis of a virtual right circular cone substantially matching the shape of the funnel-shaped lower shell part.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: November 3, 2020
    Assignee: PAUL WURTH S.A.
    Inventors: Paul Tockert, Chris Kaufmann
  • Patent number: 10767930
    Abstract: The invention relates to a charging installation (1) of a metallurgical reactor, with a cooling assembly (4) disposed for cooling a reactor side of the charging installation (1). In order to facilitate the installation and maintenance of a heat protection shield in a charging installation of a metallurgical reactor, the cooling assembly (4) comprises a plurality of cooling panels (10), each cooling panel (10) comprising at least one coolant channel (12). The channel (12) is formed as a groove in the base plate (11), which groove is covered by a cover plate (13) mounted on the base plate (11).
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: September 8, 2020
    Assignee: PAUL WURTH S.A.
    Inventors: Paul Tockert, Ernesto Pellegrino, René Hientgen
  • Patent number: 10648737
    Abstract: The invention relates to a heat protection assembly (2, 30) for a charging installation (1) of a metallurgical reactor. In order to increase the lifetime of a heat protection shield in a charging installation of a metallurgical reactor, the assembly (2, 30) comprises a plurality of heat protection tiles (31.1, 31.2, 31.3, 31.4) disposed adjacent to each other along a surface The assembly further comprises a plurality of heat protection panels (10, 110), each panel (10, 110) comprising a common base plate (11, 111) to which a plurality of tiles (31.1, 31.2, 31.3, 31.4) are connected, which heat protection panels (10, 110) are configured to be mounted on the charging installation (1) adjacent to each other.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: May 12, 2020
    Assignee: PAUL WURTH S.A.
    Inventors: Emile Lonardi, Serge Devillet
  • Patent number: 10633199
    Abstract: A process for pressurizing bulk material in an apparatus for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper containing a bulk material, wherein the apparatus comprises a source of pressurized gas, lines to convey the pressurized gas from the source of pressurized gas to one or more inlets of the lock hopper, a valve arrangement arranged in the lines, wherein the process is characterized in that said valve arrangement comprises at least two valves arranged in parallel, each valve being connected to a downstream Laval tuyere, and in that said valves are controlled to open in an operating sequence to provide pressurizing gas with an adjusted gas flow rate to the lock hopper.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: April 28, 2020
    Assignee: PAUL WURTH S.A.
    Inventors: Louis Schmit, Ben Muller
  • Patent number: 10502491
    Abstract: A sealing valve arrangement for a shaft furnace charging installation, said arrangement comprising: a shutter arranged for cooperating with a valve seat; an integrated dual-motion shutter-actuating device for moving said shutter between a sealed closed position in sealing contact with the valve seat and an open position remote from the valve seat, said integrated dual-motion shutter-actuating device comprising: a primary motion assembly for moving said shutter from said sealed closed position to an undamped position wherein the shutter is released from the valve seat; a secondary motion assembly for tilting said shutter from said undamped position to said open position remote from the valve seat, said secondary motion assembly comprising a tilting arm carrying said shutter and connected to a tilting shaft that defines an axis of rotation and a tilting shaft actuator configured to impart an angular rotation about said axis to said tilting arm; wherein said integrated dual-motion shutter-actuating device furthe
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: December 10, 2019
    Assignee: PAUL WURTH S.A.
    Inventors: Patrick Hutmacher, Yves Heinen, Charles Steichen, Harald Lang, Paul Tockert
  • Patent number: 10449548
    Abstract: A method for producing a comminuted dry material from a coarse material, the method including: (a) providing a heated drying gas from a drying gas source; (b) providing the coarse material in a storage bin; (c) feeding the coarse material and the heated drying gas into a comminuting equipment; (d) comminuting and drying the coarse material within the comminuting equipment to obtain a comminuted dry material; (e) collecting a mixture of drying gas and comminuted dry material from the comminuting equipment and feeding the mixture to a separator to separate the comminuted dry material from the drying gas; and (f) recycling at least part of the drying gas from step (e) as a preconditioning gas and feeding the preconditioning gas into a lower part of the storage bin to precondition the coarse material.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 22, 2019
    Assignee: PAUL WURTH S.A.
    Inventor: Louis Schmit
  • Patent number: 10378071
    Abstract: The invention relates to a bellow compensator for a charging installation of a metallurgical furnace. The bellow compensator comprises an inlet end pipe 40 and an opposite outlet end pipe 42 and a bellow section 44 arranged between the inlet end pipe 40 and the outlet end pipe 42, the bellow section 44 being formed by a series of folds and allowing relative movement between the inlet end pipe 40 and the outlet end pipe 42. According to the present invention, a non-structural flexible liner 60, preferably wire mesh gasket, is arranged along an inner wall 62 of the bellow compensator and extends over at least some of the length of the bellow section 44. The non-structural flexible liner 60 has a first end 64 and a second end 66, wherein the first end 64 is fixedly connected to the inlet end pipe 40 and the second end 66 is fixedly connected to the outlet end pipe 42.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: August 13, 2019
    Assignee: PAUL WURTH S.A.
    Inventors: Klaus Mutschler, Paul Tockert, Jean-Paul Closener, Christian De Gruiter, Nicolas Schlesser
  • Patent number: 10274091
    Abstract: A gate valve for a chemical plant including a valve housing having an upper opening and an opposite lower opening; an upper sealing seat and a lower sealing seat disposed on the valve housing; a valve gate movably disposed in the valve housing, for blocking a path between the openings in a closed position and opening said path in an open position, the valve gate comprising a first plate having lower surface with a blind recess and a second plate at least partially disposed in the blind recess; wherein, in the closed position, the upper sealing seat sealingly engages the first plate, the lower sealing seat sealingly engages the second plate and the second plate is at least indirectly in contact with the first plate.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: April 30, 2019
    Assignee: PAUL WURTH S.A.
    Inventors: Alexander Schlutter, Rainer Schmitz
  • Publication number: 20190071742
    Abstract: The present invention concerns a granulation installation for granulating molten material produced in a metallurgical plant, the installation includes a water injection device, for injecting granulation water into a flow of molten material and thereby granulating the molten material; a granulation tank for collecting the granulation water and the granulated material; and a steam condensation system including a steam collecting hood located above the granulation tank, for collecting steam generated in the granulation tank, a gas conduit arranged between the steam collecting hood and a water column, and a gas compressor arranged within said gas conduit for compressing the steam before feeding it into the water column.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 7, 2019
    Applicant: PAUL WURTH S.A.
    Inventor: Daniel MICHELS
  • Patent number: 10150925
    Abstract: A process for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper (29) containing a bulk material, a source of pressurized gas, lines (22, 26, 28) to convey the pressurized gas from the source to one or more inlets (30) of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve (34, 35) is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: December 11, 2018
    Assignee: PAUL WURTH S.A.
    Inventors: Louis Schmit, Ben Muller
  • Patent number: 10113799
    Abstract: A gearbox assembly for a charging installation of a metallurgical reactor includes a stationary casing housing a gear assembly. The casing includes a bottom section with a central opening. The assembly further includes a rotor mounted within the casing for rotation about a first axis, which defines an axial direction. The rotor includes a support for the gear assembly, wherein a lower section of the support is disposed within the central opening. To provide for a better protection of a gear assembly, the bottom section includes a first annular portion extending radially inwards to a first radius. The lower section has a second annular portion extending radially outwards to a second radius that is greater than the first radius. The second annular portion is disposed adjacent to the first annular portion. The first annular portion includes a ring element disposed for sliding contact with the second annular portion.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: October 30, 2018
    Assignee: PAUL WURTH S.A.
    Inventors: Paul Tockert, Jeff Vandivinit, René Hientgen