Assignee: Paul Wurth S.A. (LU)

Location: Not specified.
No. of patents: 30

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Number	Title	Issue Date
4859131	Supporting framework for a loading installation of a shaft furnace The loading installation comprises a device for introducing and distributing charge material into a shaft furnace, this device being surmounted in ascending order, and in alignment with the central axis of the furnace, by a compensator, a valve housing, a...	08/22/1989
4844292	Mechanism for actuating an opening and shut-off valve A valve actuating device for a hopper is comprised of two spherical shaped shutters or registers which pivot about common suspension axles. Each of the registers is carried by two pairs of arms located on either side of the bottom of the hopper and is cap...	07/04/1989
4827689	Automated apparatus for lining the wall of a vessel with bricks A brick-laying apparatus comprises a work platform vertically movable within a vessel and capable of rotating about the vertical axis of the vessel; and a robot for manipulating and laying bricks along the brick lining of the wall. The robot is mounted on...	05/09/1989
4812100	Rolling track for a rotary hopper The rolling track comprises a series of rollers which are supported by a fixed reinforcement and on which travels the circular pedestal of the hopper. This circular pedestal is equipped with a toothed ring in order to be driven in rotary movement about it...	03/14/1989
4812092	Feed hopper for a loading installation of a shaft furnace The hopper comprises a cylindrical side wall supported by an annular rolling ring so as to be rotatable about its vertical axis, and a funnel shaped bottom with a central outflow orifice controlled by a valve. To allow rapid removal of the rolling ring, t...	03/14/1989
4758036	Automatic grabbing device for handling articles and robot equipped with such a grabbing device A grabbing device intended to be mounted on the end of the arm of a robot and comprising a plate equipped with a pair of claws mounted in facing relation on the plate, with one claw being slidably mounted on the plate and the other claw being pivotably mo...	07/19/1988
4702288	Apparatus for the pneumatic injection of pulverulent materials into a pressurized vessel, and its application to the injection of powered coal into a shaft furnace An apparatus is presented for the pneumatic injection of pulverulent materials into a pressurized vessel, comprising a storage silo, a distribution silo, a series of metering devices for extracting the pulverulent materials from the distribution silo, pne...	10/27/1987
4702182	Process and apparatus for the injection by pneumatic means of metered amounts of pulverulent materials into a vessel which is under variable pressure A pneumatic mixture which has a relatively high content of pulverulent materials in the propulsion air is formed in a single metering means. This mixture is propelled through a common primary pipe to a distribution head in which the mixture is divided int...	10/27/1987
4594028	Apparatus and process for the injection of metered amounts of pulverized material into a vessel This invention presents apparatus and a process for the injection of metered amounts of pulverized materials by a pneumatic device into a vessel which is under variable pressure, and the application thereof to a shaft furnace....	06/10/1986
4588168	Device for regulating the delivery of hot air in a tuyere stock of a shaft furnace and a tuyere stock which incorporates the same An apparatus for regulating the feed or delivery of hot air in the tuyere stock of a shaft furnace, and a tuyere stock which incorporates such a regulating apparatus is presented. The regulating apparatus may be used in conjunction with a tuyere stock for...	05/13/1986
4574494	Device for determining the profile of the charging surface of a shaft furnace An apparatus for determining the charging profile on the charging surface of a shaft furnace is presented. The apparatus consists of a plurality of level probes, each probe including a weight which is suspended vertically above the charging surface on the...	03/11/1986
4570552	Process and apparatus for delivering carbon material to a furnace A process and apparatus for delivering carbon i.e., coal dust, to be combusted in a furnace is presented. The furnace is of the type having plural combustion points and may include a shaft furnace such as, for example, a blast or cupola furnace. The carbo...	02/18/1986
4559839	Apparatus for driving an oscillating spout A drive means for an oscillating spout is presented which includes a control mechanism which directs a control arm to perform the movement required by the spout and a transmission device which acts to transmit the control arm movement and reproduce it as ...	12/24/1985
4557468	Apparatus for plugging the taphole of a shaft furnace An apparatus for plugging the taphole of a shaft furnace is presented which comprises a fixed support frame having a main pivoting joint and a jib device. The jib consists of a rotary support joint. The other end of the rotary support arm having one end w...	12/10/1985
4540058	Apparatus for weighing heavy loads An apparatus is presented for weighing heavy loads, particularly those loads having to be laterally supported during the weighing operation. The weighing apparatus comprises a vertical column supported on its base by pressure cells and provided on its top...	09/10/1985
4526536	Cooling apparatus for use in conjunction with a charging device for a shaft furnace A water cooling apparatus is presented for use in conjunction with a charging device of a shaft furnace, particularly a shaft furnace having a bell-less top charging apparatus. The cooling apparatus essentially comprises an annular feed vat which is attac...	07/02/1985
4497379	Modular pivotal fluidic joint systems and components thereof Multi-path rotatable fluid couplings are formed from modular elements so as to have one, two or three axes about which relative rotation of supply and discharge conduits may occur. These modular elements may be employed in an articulated delivery system f...	02/05/1985
4436293	Rotary support for continuous casting ladles This invention presents a rotary support for continuous casting ladles, which comprises a vertical column, a drive mechanism for pivoting this column about its vertical axis, a cross arm structure carried by this column and having at least one of its ends...	03/13/1984
4416673	Dust collector for furnace charging installation Entrained particulate matter is separated from the pressurized gas released from an intermediate charge material storage hopper of a blast furnace charging installation, the hopper alternately being pressurized to the furnace pressure for release of charg...	11/22/1983
4403516	Furnace probe Plural gas samples are simultaneously collected and the temperature at each sampling point accurately measured by means of a probe which may be inserted into the furnace charge. The probe is constructed so as to facilitate assembly and repair while insuri...	09/13/1983
4395166	Fluidization and distribution A pulverized material, particularly coal or lignite, is maintained in a fluidized state in a storage container and is released therefrom into a carrier gas stream. The gas for causing fluidization and maintaining a pressure in the container which is great...	07/26/1983
4374645	Process for granulation of slag The granulation of molten material, blast furnace slag for example, is accomplished by wetting the slag with a stream of water and thereafter transporting the thus formed granules away from the point of granulation with the water stream. Water consumption...	02/22/1983
4368813	Distribution chute control apparatus and method Control over the direction and inclination of a charge distribution chute within a blast furnace is accomplished with a compact and reliable drive mechanism. The drive mechanism includes a rigid control rod for varying chute inclination angle and a gear d...	01/18/1983
4368678	Injection of pulverized material into a pressurized furnace A fuel stream comprising a combustible pulverized material entrained in a carrier gas is formed and subsequently injected into a blast furnace with the hot blast air without any detrimental effect on the hot air blast and with minimum energy consumption. ...	01/18/1983
4354665	Valve for opening and closing a fluid conduit A valve for opening and closing a fluid conduit of the type having a generally wide cross-section, the conduit having a transverse slit therein to allow for movement of a shut-off member into and out of registration therewith. The shut-off member has a sp...	10/19/1982
4332374	Profilometer mounting technique and apparatus Apparatus for measuring the contour of a surface without establishing contact therewith includes an energy transmitter movable in at least two directions. When employed in a shaft furnace the transmitter is movable along a longitudinal axis, so as to be e...	06/01/1982
4325312	Method and installation of injection of solid fuels into a shaft furnace A pulverized solid fuel is injected into a shaft furnace by being entrained in a stream of pressurized air, the resulting fuel-air mixture subsequently being further mixed with heated air being delivered to the furnace via a tuyere. The air used to entrai...	04/20/1982
4307987	Shaft furnace charging apparatus The profile of material deposited on the hearth of a pressurized furnace is controlled by means of a charging installation including a lower charging bell which has, suspended therefrom, a variable geometry distributor which may be controlled to select th...	12/29/1981
4245982	Cooling box for shaft furnaces The refractory lining of a shaft furnace is cooled by means of a cooling box, which extends into the lining through the furnace shell, having a pair of separately fed coolant flow paths formed therein. A first coolant circuit extends along the side walls ...	01/20/1981
4153440	Treatment of metallurgical slag Disclosed is a process for the treatment of metallurgical slag, the process comprising mechanical disintegration of a current of pyroplastic slag formed by initial cooling of a current of melting slag by means of water. This cooling comprises a first cool...	05/08/1979

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Assignee: Paul Wurth S.A. (LU)