EP3421619B1 - Aspiration cover of converter dust cap - Google Patents
Aspiration cover of converter dust cap Download PDFInfo
- Publication number
- EP3421619B1 EP3421619B1 EP18179501.4A EP18179501A EP3421619B1 EP 3421619 B1 EP3421619 B1 EP 3421619B1 EP 18179501 A EP18179501 A EP 18179501A EP 3421619 B1 EP3421619 B1 EP 3421619B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover according
- rotating shutter
- shaft
- cover
- movable doors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 title claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 239000003517 fume Substances 0.000 description 12
- 238000007664 blowing Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010022000 influenza Diseases 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0041—Bath smelting or converting in converters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/002—Details of the installations, e.g. fume conduits or seals
Definitions
- the invention relates to metallurgy and more particularly to fume and dust extraction devices.
- the prior art most closely related to the present invention is a converter cover and a dust cap disclosed in Inventor's Certificate SU 466290 .
- the cover comprises a movable shutter formed by two (right and left) front walls, an inclined rotating shutter with brakes for retaining the same and rotation mechanisms, two stationary sidewalls and two side flues.
- the dust cap is separated from the shelter by a sectional plate.
- the rotation mechanism of the inclined shutter comprises two double-armed levers, one arm of each lever being connected to a drive, and the other to a counterweight.
- the cover does not provide a sufficient efficiency of fume and dust extraction because in blowing position of the converter fumes are trapped from a large space covered by two front moving walls, and a great amount of aspiration fumes is captured.
- the technical problem to be solved by the present invention is the low efficiency of collecting uncontrolled emissions of dusty aspiration fumes from under the converter dust cap.
- the object of the invention is to maximize the collection of uncontrolled emissions of dusty aspiration fumes from under the converter dust cap.
- the invention is defined by claim 1.
- the body can be made up of vertical, horizontal and inclined panels.
- the panels can be made of steel.
- the panel can comprise a rectangular angle-framed sheet
- the joints between the panels can be sealed with an asbestos cord.
- the rotating shutter can comprise a ribbed fire sheet.
- the cover can comprise a first shaft and a counterweight, said rotating shutter being connected to the first shaft that is connected to the rotating shutter drive on one side and to the counterweight on the other side.
- the rotating shutter can be welded to the first shaft.
- the first shaft can be connected to the counterweight through a block and tackle system.
- the first shaft can be connected to the rotating shutter drive via a lever.
- the first shaft can be mounted in bearing housings.
- the housings of bearings can be adapted to be secured to a dust cap frame.
- the gas flue can be disposed in the upper part of the body.
- the movable doors can be supported by rollers.
- the movable doors drive can comprise a second shaft with sprockets mounted thereon, the sprockets being engaged with a chain that is secured on the vertical part of the movable doors.
- the inventive arrangement of the movable doors at an angle of 120-130° to each other and the rotation ability of the shutter at an angle of up to 25° are chosen in view of supposed uncontrolled emission and enable collection and evacuation of aspiration fumes during both tapping operation and blowing operation of the converter, thereby maximizing the collection of uncontrolled emissions of dusty aspiration fumes from under the convertor dust cap.
- the rotating shutter of the aspiration cover operates in conjunction with a rotary lid of the dust cap and the movable doors, forming together a general aspiration system.
- the inventive device ensures the compliance with all safety requirements to the convertor operation.
- Aspiration cover of a dust cap 4 of a converter 5 is adapted to be mounted on a dust cap frame 6 and comprises a body 1, a rotating shutter 1 and movable doors 2.
- the movable doors 2 comprise a vertical part 12 and an inclined 13 part, which are pivotally connected at an angle of 120-130° to each other, supported by rollers 15 and have a movable doors drive 16, in this case a motor reducer.
- Sprockets are mounted on a second shaft of the movable doors drive 2 in engagement with a chain that is secured on the vertical part 12 of the movable doors 2.
- the aspiration cover In assembled state, the aspiration cover is mounted on a dust cap frame 6 of the converter 5 directly above it.
- the rotating shutter 3 is disposed over the mouth of the converter 5 on the service passage side.
- the aspiration cover body 1 is made up of steel panels arranged vertically, horizontally and obliquely.
- a panel comprises a preferably rectangular angle-framed sheet that serves as a flange to attach to the other panels forming the body 1 by means of metal items.
- Flues 7 are cut in the upper part of the aspiration cover body 1 on both sides for withdrawal of aspiration fumes, which are then conveyed to a gas cleaning section.
- Design of the flues 7 takes into account the aggressive atmosphere of fumes, their abrasive nature, amounts and the compliance with all safety requirements.
- the rotating shutter 3 comprises a fire sheet reinforced with ribs and welded to a first shaft 10.
- the first shaft 10 is connected, via a lever, to a rotating shutter drive 8 on one side and, via a block and tackle system, to a counterweight 11 on the other side.
- the first shaft 10 of the rotating shutter 3 is mounted in bearing housings 9, which are secured to the dust cap frame 6 by means of racks.
- the dust cap frame 6 is a welded metal structure consisting of T-beams fastened together by ties.
- the beams are mounted on columns that are secured to foundation.
- the rotating shutter drive 8 is designed to rotate the rotating shutter 3 in the process and repair operations at an angle of up to 25°.
- the rotating shutter drive 8 can be also based on a motor reducer. End switches turn off the rotating shutter drive 8 at extreme positions of the rotating shutter 3.
- a restraint element is mounted on the dust cap frame 6 on the service passage side.
- the movable aspiration doors 2 comprise a composite structure including bearing metal structures 14 such as supports and beams, on which movable steel panels of the vertical 12 and inclined 13 parts of the movable doors 2 are mounted on the front of the converter 5.
- a fume cleaning area is disposed eastwards of a copper smelting shop.
- the area comprises bag filters, smoke exhausters, compressors disposed in a separate building, and a flue extending from the point of cutting into a fume collector at the exit of the copper smelting shop to the existing chimney shaft.
- the device works in the following manner.
- the vertical 12 and inclined 13 parts of the movable doors 2 are pivotally connected at an angle and supported by rollers 15, on which they are moving when the movable doors drive 16 is turned on.
- a chain is secured on the vertical panels 2, and movable doors drives 16 with sprockets mounted on drive shafts are installed on rigidly fixed beams. As the sprockets rotate, the chain is advanced and, accordingly, the chain moves the panel in the direction of closing and opening.
- a limit switch issues end-of-motion command.
- the area, where a ladle for tapping slag and molten metal is disposed, is closed by the movable doors 2 and the rotating shutter 3 for the time of tapping and rotating the converter 5.
- the lid of the dust cap 4 is elevated at angle 120° towards the restraint element, the movable doors 2 are opened and the rotating shutter 3 of the aspiration cover is lowered to its lowest position.
- a cover is a body having a rectangular section of 4300x5300x4100.
- the aspiration cover body comprises 31 steel panels arranged vertically, horizontally and obliquely.
- a flue has a diameter of 800 mm.
- a fire sheet measures 4050x4325 mm, and a first shaft has a diameter of 150 mm.
- Vertical part of the movable doors has a size of 4600x5400 mm, and inclined part has a size of 3350x3450 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Prevention Of Fouling (AREA)
- Chimneys And Flues (AREA)
- Motor Or Generator Frames (AREA)
Description
- The invention relates to metallurgy and more particularly to fume and dust extraction devices.
- The prior art most closely related to the present invention is a converter cover and a dust cap disclosed in Inventor's Certificate
SU 466290 - However, the cover does not provide a sufficient efficiency of fume and dust extraction because in blowing position of the converter fumes are trapped from a large space covered by two front moving walls, and a great amount of aspiration fumes is captured.
-
US 1,417,588 discloses features falling under the preamble ofclaim 1.CN 205 035 423 U is further prior art. - The technical problem to be solved by the present invention is the low efficiency of collecting uncontrolled emissions of dusty aspiration fumes from under the converter dust cap.
- The object of the invention is to maximize the collection of uncontrolled emissions of dusty aspiration fumes from under the converter dust cap.
- The invention is defined by
claim 1. - The body can be made up of vertical, horizontal and inclined panels.
- The panels can be made of steel.
- The panel can comprise a rectangular angle-framed sheet,
- The joints between the panels can be sealed with an asbestos cord.
- The rotating shutter can comprise a ribbed fire sheet.
- The cover can comprise a first shaft and a counterweight, said rotating shutter being connected to the first shaft that is connected to the rotating shutter drive on one side and to the counterweight on the other side.
- The rotating shutter can be welded to the first shaft.
- The first shaft can be connected to the counterweight through a block and tackle system.
- The first shaft can be connected to the rotating shutter drive via a lever.
- The first shaft can be mounted in bearing housings.
- The housings of bearings can be adapted to be secured to a dust cap frame.
- The gas flue can be disposed in the upper part of the body.
- The movable doors can be supported by rollers.
- The movable doors drive can comprise a second shaft with sprockets mounted thereon, the sprockets being engaged with a chain that is secured on the vertical part of the movable doors.
- The inventive arrangement of the movable doors at an angle of 120-130° to each other and the rotation ability of the shutter at an angle of up to 25° are chosen in view of supposed uncontrolled emission and enable collection and evacuation of aspiration fumes during both tapping operation and blowing operation of the converter, thereby maximizing the collection of uncontrolled emissions of dusty aspiration fumes from under the convertor dust cap.
- During the process steps the rotating shutter of the aspiration cover operates in conjunction with a rotary lid of the dust cap and the movable doors, forming together a general aspiration system.
- Owing to its structure, in particular the attachment and drive mechanisms, and steel plates in the shape of a rectangular angle-framed sheet, sealing the joints between the panels with an asbestos cord, and making the rotating shutter as a ribbed fire sheet, the inventive device ensures the compliance with all safety requirements to the convertor operation.
- The present invention is disclosed with reference to
Figs. 1 to 5 , where: -
Fig. 1 shows an aspiration cover mounted on a converter dust cap in blowing position of the converter. -
Fig. 2 is a side view of the aspiration cover; -
Fig. 3 is a front view of the aspiration cover; -
Fig. 4 is a front view of the aspiration doors: -
Fig. 5 is a side view of the aspiration doors. - Reference numerals 1-16 in
Figs 1 to 5 stand for: - 1 -
- body of aspiration cover;
- 2 -
- movable doors;
- 3 -
- rotating shutter;
- 4 -
- dust cap;
- 5 -
- converter;
- 6 -
- dust cap frame;
- 7 -
- gas flue;
- 8 -
- rotating shutter drive;
- 9 -
- bearing housing;
- 10 -
- first shaft;
- 11 -
- counterweight;
- 12 -
- vertical part of movable doors;
- 13 -
- inclined part of movable doors;
- 14 -
- bearing metal structures of movable doors;
- 15 -
- roller;
- 16 -
- movable doors drive.
- Aspiration cover of a dust cap 4 of a
converter 5 is adapted to be mounted on adust cap frame 6 and comprises abody 1, arotating shutter 1 andmovable doors 2. - Upper part of the
body 1 is provided with agas flue 7. - The
movable doors 2 comprise avertical part 12 and an inclined 13 part, which are pivotally connected at an angle of 120-130° to each other, supported byrollers 15 and have a movable doors drive 16, in this case a motor reducer. Sprockets are mounted on a second shaft of the movable doors drive 2 in engagement with a chain that is secured on thevertical part 12 of themovable doors 2. - In assembled state, the aspiration cover is mounted on a
dust cap frame 6 of theconverter 5 directly above it. - The
rotating shutter 3 is disposed over the mouth of theconverter 5 on the service passage side. - The
aspiration cover body 1 is made up of steel panels arranged vertically, horizontally and obliquely. - A panel comprises a preferably rectangular angle-framed sheet that serves as a flange to attach to the other panels forming the
body 1 by means of metal items. - Joints between the panels and other stationary parts forming the
aspiration cover body 1 are sealed with an asbestos cord. -
Flues 7 are cut in the upper part of theaspiration cover body 1 on both sides for withdrawal of aspiration fumes, which are then conveyed to a gas cleaning section. - Design of the
flues 7 takes into account the aggressive atmosphere of fumes, their abrasive nature, amounts and the compliance with all safety requirements. - The
rotating shutter 3 comprises a fire sheet reinforced with ribs and welded to afirst shaft 10. Thefirst shaft 10 is connected, via a lever, to arotating shutter drive 8 on one side and, via a block and tackle system, to acounterweight 11 on the other side. - The
first shaft 10 of therotating shutter 3 is mounted in bearinghousings 9, which are secured to thedust cap frame 6 by means of racks. - The
dust cap frame 6 is a welded metal structure consisting of T-beams fastened together by ties. The beams are mounted on columns that are secured to foundation. - The
rotating shutter drive 8 is designed to rotate therotating shutter 3 in the process and repair operations at an angle of up to 25°. Therotating shutter drive 8 can be also based on a motor reducer. End switches turn off therotating shutter drive 8 at extreme positions of therotating shutter 3. - To avoid damage to the
rotating shutter 3 during process steps such as ladling, deskulling of the mouth, etc., a restraint element is mounted on thedust cap frame 6 on the service passage side. - The
movable aspiration doors 2 comprise a composite structure including bearingmetal structures 14 such as supports and beams, on which movable steel panels of the vertical 12 and inclined 13 parts of themovable doors 2 are mounted on the front of theconverter 5. - In a particular embodiment, a fume cleaning area is disposed eastwards of a copper smelting shop. The area comprises bag filters, smoke exhausters, compressors disposed in a separate building, and a flue extending from the point of cutting into a fume collector at the exit of the copper smelting shop to the existing chimney shaft.
- The device works in the following manner.
- The vertical 12 and inclined 13 parts of the
movable doors 2 are pivotally connected at an angle and supported byrollers 15, on which they are moving when the movable doors drive 16 is turned on. A chain is secured on thevertical panels 2, and movable doors drives 16 with sprockets mounted on drive shafts are installed on rigidly fixed beams. As the sprockets rotate, the chain is advanced and, accordingly, the chain moves the panel in the direction of closing and opening. A limit switch issues end-of-motion command. - The area, where a ladle for tapping slag and molten metal is disposed, is closed by the
movable doors 2 and therotating shutter 3 for the time of tapping and rotating theconverter 5. - In blowing operation of the
converter 5 therotating shutter 3 of the aspiration cover is elevated to upper position at angle of 25°, and themovable doors 2 and the lid of the dust cap 4 are closed. - As the
converter 5 runs out from blowing operation, the lid of the dust cap 4 is elevated at angle 120° towards the restraint element, themovable doors 2 are opened and therotating shutter 3 of the aspiration cover is lowered to its lowest position. - A cover is a body having a rectangular section of 4300x5300x4100. The aspiration cover body comprises 31 steel panels arranged vertically, horizontally and obliquely. A flue has a diameter of 800 mm. A fire sheet measures 4050x4325 mm, and a first shaft has a diameter of 150 mm. Vertical part of the movable doors has a size of 4600x5400 mm, and inclined part has a size of 3350x3450 mm.
- The above examples are particular embodiments and do not cover all possible embodiments of the invention.
- Those skilled in the art will appreciate that other variations of the present method do not alter the essence of the invention, but only define specific embodiments thereof.
Claims (15)
- An aspiration cover of a converter dust cap (4), wherein the cover is adapted to be mounted on a frame (6) of the converter dust cap (4) and comprises a body (1), a rotating shutter (3) and movable doors (2), the body (1) being provided with a gas flue (7), wherein the rotating shutter (3) has a rotating shutter drive (8) and
characterized in that
the rotating shutter (3) is rotatable at an angle of up to 25°, and the movable doors comprise a vertical part (12) and an inclined part (13) pivotally connected at an angle of 120-130° to each other and having a movable doors drive (16). - The cover according to claim 1, characterized in that the body (1) comprises vertical, horizontal and inclined panels.
- The cover according to claim 2, characterized in that the panels are made of steel.
- The cover according to claim 2, characterized in that the panel comprises a rectangular angle-framed sheet.
- The cover according to claim 2, characterized in that joints between the panels are sealed with an asbestos cord.
- The cover according to claim 1, characterized in that the rotating shutter (3) comprises a ribbed fire sheet.
- The cover according to claim 1, characterized in that the cover comprises a first shaft (10) and a counterweight (11), wherein said rotating shutter (3) is connected to the first shaft (10), which is connected to the rotating shutter drive (8) on one side and to the counterweight (11) on the other side.
- The cover according to claim 7, characterized in that the rotating shutter (3) is welded to the first shaft (10).
- The cover according to claim 7, characterized in that first shaft (10) is connected to the counterweight (11) via a block and tackle system.
- The cover according to claim 7, characterized in that the first shaft (10) is connected to the rotating shutter drive (8) via a lever.
- The cover according to claim 7, characterized in that the first shaft (10) is mounted in bearing housings (9).
- The cover according to claim 11, characterized in that the bearing housings (9) are adapted to be secured to a dust cap frame (6).
- The cover according to claim 1, characterized in that the gas flue (7) is disposed in the upper part of the body (1).
- The cover according to claim 1, characterized in that the movable doors (2) are supported by rollers (15).
- The cover according to claim 1, characterized in that the movable doors drive (16) comprises a second shaft with sprockets mounted thereon, the sprockets being engaged with a chain that is secured on the vertical part of the movable doors (2).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2017122725A RU2649621C1 (en) | 2017-06-28 | 2017-06-28 | Converter dust pan aspiration cover |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3421619A1 EP3421619A1 (en) | 2019-01-02 |
EP3421619B1 true EP3421619B1 (en) | 2020-04-29 |
Family
ID=61867148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18179501.4A Active EP3421619B1 (en) | 2017-06-28 | 2018-06-25 | Aspiration cover of converter dust cap |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3421619B1 (en) |
CL (1) | CL2018001764A1 (en) |
EA (1) | EA036238B1 (en) |
RU (1) | RU2649621C1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113532131A (en) * | 2021-07-09 | 2021-10-22 | 中国恩菲工程技术有限公司 | Bottom blowing refining furnace petticoat pipe and bottom blowing refining furnace |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1417588A (en) * | 1917-07-21 | 1922-05-30 | American Smelting Refining | Converter hood |
US3494763A (en) * | 1966-01-17 | 1970-02-10 | Yawata Seitetsu Kk | Process for discharging unburned waste gas from oxygen top-blowing converter |
SU466290A1 (en) * | 1974-06-11 | 1975-04-05 | Государственный Институт По Проектированию Предприятий Цветной Металлургии "Гипроцветмет" | Shelter converter and napylnik |
US4253644A (en) * | 1978-12-04 | 1981-03-03 | Inland Steel Company | Fluid closure for and method of preventing flow through an opening in a fluid and particulate confining and conveying structure |
SU1027226A1 (en) * | 1981-04-08 | 1983-07-07 | Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов,Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии "Внипичерметэнергоочистка" | Steel smelting unit |
RU2048535C1 (en) * | 1992-07-16 | 1995-11-20 | Карагандинский металлургический комбинат | Apparatus to trap from converter outgoing gasses |
UA82619C2 (en) * | 2007-01-15 | 2008-04-25 | Украинский Государственный Научно-Техничный Центр Технологии И Оборудования, Обработки Металлов, Защиты Окружающей Среды И Использования Вторичных Ресурсов Для Металлургии И Машиностроения "Энергосталь" | Device for trapping of unorganized blowout from metallurgical unit |
CN205035423U (en) * | 2015-09-28 | 2016-02-17 | 云南铜业股份有限公司 | Handle collection cigarette device of pearce smith converter loss flue gas |
-
2017
- 2017-06-28 RU RU2017122725A patent/RU2649621C1/en active
-
2018
- 2018-06-21 EA EA201891231A patent/EA036238B1/en unknown
- 2018-06-25 EP EP18179501.4A patent/EP3421619B1/en active Active
- 2018-06-27 CL CL2018001764A patent/CL2018001764A1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EA201891231A3 (en) | 2019-02-28 |
CL2018001764A1 (en) | 2019-02-15 |
RU2649621C1 (en) | 2018-04-04 |
EP3421619A1 (en) | 2019-01-02 |
EA036238B1 (en) | 2020-10-16 |
EA201891231A2 (en) | 2019-01-31 |
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