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| Number | Title | Issue Date |
| 7371342 | Method for unlocking nozzles of reactors Method intended to unblock enriched air blow or reaction gases nozzles in reactors or fusion converters for mining industry pyrometallurgy CHARACTERIZED by the injection of discrete air impacts with time intervals regulated to high pressure and rate through the enri... | 05/13/2008 |
| 7364690 | Device for injecting a treatment gas into a molten metal The invention relates to a device (8) which is used to inject a treatment gas into a molten metal contained in a tank (1) and which is designed to be fixed in one of the walls of said tank. The inventive device comprises at least one injection nozzle (... | 04/29/2008 |
| 6835229 | Method and apparatus for clearing a powder accumulation in a powder delivery tube A system for monitoring coal flow through a coal delivery tube in a blast furnace fuel injection system is disclosed, which system automatically actuates a purge cycle for clearing accumulations of coal from a coal lance when a temperature drop indicative of an immi... | 12/28/2004 |
| 5928603 | Device for sealing a lance in an opening for introduction of the lance into a container under pressure A device for sealing a lance (12) in an opening in a container under pressure, in particular a shaft furnace, is described. The device comprises a first casing (46) with an end wall on the shaft furnace side and on the environment side, which are each pro... | 07/27/1999 |
| 5925312 | Push-pull apparatus adapted for assembling and disassembling a tubular body that is to be fitted into a ring retainer on a wall member A push-pull apparatus includes a machine base, and a coupling unit having a retractable main frame disposed on top of the machine base and longitudinally movable in forward and rearward directions relative to the machine base, and a coupler mounted on a f... | 07/20/1999 |
| 5626753 | System and method for the transport of lime A filter for use in a coupling disposed between first and second tubes which convey lime from a movable carrier to a processing pot in a steel mill. The filter has a plurality of openings sized and positioned to allow passage of lime and exclude contamina... | 05/06/1997 |
| 5542650 | Apparatus for automatically cleaning smelt spouts of a chemical recovery furnace A smelt spout cleaner apparatus includes a cleaning head insertable into a smelt spout and movable in a substantially linear path along the smelt spout for thoroughly cleaning the spout. The cleaning head is mounted on one end of a substantially horizonta... | 08/06/1996 |
| 5481247 | Blast furnace tuyere sensor system A blast furnace tuyere sensor system comprising a conditioning circuit including a D.C. power supply, a potentiometer for base loading circuit voltage, and a photosensitive resistor sensor which outputs an analog voltage signal proportional to the intensi... | 01/02/1996 |
| 5462260 | Device for inserting a lance into a pressurized container, in particular a blast furnace A device is presented for inserting, from a support structure a lance axially through a side opening in a pressurized container, in particular a blast furnace. This device comprises a support bench on which a support carriage can slide. A front elastic su... | 10/31/1995 |
| 5397108 | Peepsight for blast furnace tuyere sensor system A peepsight for a blast furnace tuyere sensor system comprises a housing in which is mounted a colored glass viewing window and one end of a fiber optic cable directed toward a tuyere so that an operator can view the interior of the furnace and the cable ... | 03/14/1995 |
| 5238158 | Immersion nozzle exchanging apparatus This invention concerns an apparatus for enabling exchange of an immersion nozzle seated in a tundish and used for casting of a molten metal from a molten metal container to be carried out very easily and quickly, which apparatus comprises rails (4) laid ... | 08/24/1993 |
| 5176875 | Tubular water-cooled jacket for furnaces A tubular water-cooled jacket for furnaces is disclosed which includes a tubular member having a plurality of axial apertures and a plurality of transverse apertures. Each transverse aperture is formed therein so as to bring at least two of the axial aper... | 01/05/1993 |
| 5167192 | Damper controller for a chemical recovery furnace A controller for a damper in a chemical recovery furnace relieves physical engagement between the damper mechanism and an operating handle therefor when such handle is being repositioned. The damper is repositioned to prevent interference with an adjacent... | 12/01/1992 |
| 5070823 | Port rodder with anti-drift feature An anti-drift mechanism for a downwardly oriented port rodder for cleaning a port opening of a recovery boiler. The anti-drift mechanism prevents a cutter of the rodder from accidentally drifting from a retracted holding position into the port upon the lo... | 12/10/1991 |
| 4989839 | Automatic tuyere puncher A system for automatically or semi-automatically controlling the operation of a tuyere puncher comprises a distance measuring device which measures the distance of the puncher from a reference position, and a programmable device having a memory which may ... | 02/05/1991 |
| 4838182 | Apparatus for regulating air flow through an air port of a chemical recovery furnace Removable apparatus for regulating air flow through an air port in a chemical recovery furnace. A plenum having an adjustable damper is mounted inside a wind box associated with the furnace adjacent to an air port and supplies and regulates the flow of ai... | 06/13/1989 |
| 4706324 | Apparatus for automatically cleaning smelt spouts of a chemical recovery furnace Removable apparatus for cleaning obstructions such as oxidized or encrusted smelt from a smelt spout of a chemical recovery furnace. A metal cleaning head having a rod-like shape depends, at rest, from a housing attached exteriorly of the furnace above th... | 11/17/1987 |
| 4619533 | Tuyere pyrometer An apparatus for measuring bath temperature of metallurgical furnaces through a tuyere is disclosed. The apparatus comprises a periscope adapted to be inserted into a tuyere, a fiber optic cable having one end connected to the periscope for receiving radi... | 10/28/1986 |
| 4423533 | Furnace air port cleaner Apparatus for cleaning air ports in a chemical recovery furnace includes a face plate removably received in a frame secured to the outer wall of the wind box associated with the furnace. The face plate pivotally carries a plurality of tubes which sealingl... | 01/03/1984 |
| 4353530 | Method and apparatus for automatically punching the tuyeres of a converter Method and apparatus for punching the tuyeres of a converter with a mechanical puncher mounted upon a carriage running on rails. Light intercepting plates encoded by light transmission holes are disposed opposite each tuyere. Light is shone towards the li... | 10/12/1982 |
| 4317561 | Holder for an oxygen lance A holder for an oxygen lance characterized by at least one actuating device comprising an operating lever which is connected to a shut off valve.... | 03/02/1982 |
| 4285504 | Tuyere sealing means and silencer A tuyere sealing means and silencer having a bell-shaped nozzle. A plurality of cutouts are included in the nozzle and receive radially movable ramp-type valve elements which are adapted to engage with a seal with the plurality of a punch rod. The valve e... | 08/25/1981 |
| 4114865 | Silencer for use on tuyere punchers A silencer for use with a tuyere puncher is disclosed. The silencer comprises a chamber having a front face and a rear face provided with a central opening for passing of the punch bar operated by the puncher, a plurality of closure members located in the... | 09/19/1978 |
| 3946949 | Nozzle for rotary kiln A nozzle for use with a rotary kiln of the type used for reducing ore, such as iron ore, to a lower state of oxidation. The nozzle projects in a generally radial direction through the kiln shell to inject fluid into the interior of the rotary kiln. The no... | 03/30/1976 |
