WO2001040728A1 - Chemise de refroidissement pour four a arc - Google Patents
Chemise de refroidissement pour four a arc Download PDFInfo
- Publication number
- WO2001040728A1 WO2001040728A1 PCT/JP1999/006806 JP9906806W WO0140728A1 WO 2001040728 A1 WO2001040728 A1 WO 2001040728A1 JP 9906806 W JP9906806 W JP 9906806W WO 0140728 A1 WO0140728 A1 WO 0140728A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- cooled jacket
- cooled
- slag
- furnace
- 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.)
- Ceased
Links
Classifications
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
- C23C10/48—Aluminising
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
- F27B3/12—Working chambers or casings; Supports therefor
- F27B3/14—Arrangements of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
- F27B3/24—Cooling arrangements
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
- F27D2009/0013—Cooling of furnaces the cooling medium being a fluid other than a gas the fluid being water
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
- F27D2009/0032—Cooling of furnaces the cooling medium passing through a pattern of tubes integrated with refractories in a panel
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/004—Cooling of furnaces the cooling medium passing a waterbox
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/004—Cooling of furnaces the cooling medium passing a waterbox
- F27D2009/0043—Insert type waterbox, e.g. cylindrical or flat type
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0045—Cooling of furnaces the cooling medium passing a block, e.g. metallic
- F27D2009/0048—Cooling of furnaces the cooling medium passing a block, e.g. metallic incorporating conduits for the medium
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0051—Cooling of furnaces comprising use of studs to transfer heat or retain the liner
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the present invention mainly relates to a novel water-cooled jacket used for an electric arc furnace for steelmaking.
- the interior of the electric furnace for steelmaking withstands the high heat, so the inner wall, ceiling, and dust collection except for the parts made of refractory material such as the furnace bottom, lower side wall, tapping gutter, and waste metal that come into direct contact with molten steel
- the mouths are all water-cooled, and because of their structure and shape, they are called by various names such as water-cooled jackets, water-cooled panels, water-cooled boxes, and water-cooled tubes.In the present invention, the names are unified to water-cooled jackets. This will be described below.
- the water-cooled jacket for the inner wall shown in Fig. 1 (a) and (b) has a welded structure 1 made of ordinary steel plate, so that the cooling water at a temperature of 40 to 70 ° C can be evenly distributed.
- Has a cooling water channel including a water supply port 3 and a drain port 4, and a number of slag cutters 2 made of steel plates 25 mm thick, 50 mm wide and 130 mm long are welded to the outer surface.
- Fixed This slag catcher is installed to actively catch the slag scattered in the furnace on the surface of the water-cooled jacket, and has the role of a stud that is often used when coating refractories.
- the water-cooled jacket for ceiling shown in Fig. 2 has a number of ordinary steel pipes 5 arranged concentrically, and the surface of the water-cooled pipe 5 is covered with a fire-resistant cable 6. Cooling water at a temperature of is supplied from the lined water ⁇ 3 and flows to the drain port 4.
- the water-cooling jacket for the dust collection port shown in Fig. 3 is made of ordinary steel pipes arranged in a substantially cylindrical shape, and a stud 8 is welded and fixed to the surface of this water-cooling pipe 7, and the outer periphery is made of a refractory castable It is covered with.
- the slag catcher 10 provided outside the main body 9 is not a steel plate. It is made by welding small pieces of a deformed steel bar with a diameter of 25 mm to a length of 30 mm and welding them at intervals of about 75 mm. 3 indicates a water supply port and 4 indicates a drain port.
- the water-cooled jacket of the electric furnace is used in an extremely severe environment where oxidation and corrosion at high temperatures, thermal shock, mechanical shock, and wear coexist, regardless of where it is used. It is.
- the water-cooled jacket installed in the furnace is a large structure that is divided and assembled into 20 to 40 pieces.As a matter of course, not only the production cost but also the replacement requires a lot of labor and time, so a large expense is inevitable. Therefore, it is desirable to have a long service life as much as possible, which may increase steelmaking costs.
- the slag cartridge and the refractory covering fall off with the passage of time, so it is unavoidable that the water cooling jacket is finally used with the surface power exposed. Will be.
- the decisive factors of the slag catch are the cracks in the welds caused by heating and cooling, and in the case of the inner wall jacket, the mechanical impact force when the scrap is injected in a higher temperature atmosphere.
- the cause of the fallout of refractory is that the refractory cannot be held due to the peeling caused by the adhesion of slag and the high-temperature oxidation of the stud to prevent the fallout and the thinning due to corrosion. This is because that.
- the part where the cracks enter in this way is repaired by welding from the surface, but at most about 1 Z 3 of the plate thickness is welded and the remaining 2/3 of the remaining cracking force remains, so it is better than other unrepaired parts Vulnerable. Therefore, once a crack has entered, it is easy for the cracking force to recur even after the repair, and the repeated use of the repair and the repair of the newly cracked portion will continue to be used, and the life will be extended to the scheduled replacement date, which is the scheduled replacement date as much as possible. However, if it is judged that it will not be usable until the scheduled date, measures such as advancing the regular repair date or replacing only the leaking water-cooled jacket as soon as possible will be taken in any case.
- the present invention is an arc type that can be used stably for a long time in an extremely severe environment where oxidation, corrosion, mechanical shock, thermal shock, and wear coexist in a high temperature atmosphere.
- the purpose is to provide a water-cooled jacket for electric furnaces.
- the present inventors focused on a calorizing treatment conventionally known as a high-temperature corrosion treatment.
- the aluminum diffusion and infiltration treatment called the calorizing treatment has the following characteristics.
- a 1 is formed on the surface at the oxidizing atmosphere Q 0 3 protective coating be hardly peeled off in an extremely stable.
- the A1 diffusion and penetration layer force is formed by alloying with the component of the A1 force base material that diffuses and penetrates from the surface, it is resistant to thermal shock and difficult to peel.
- the inventors of the present invention applied a calorizing treatment having the above-described characteristics to a water-cooled jacket for an electric arc furnace to form an A1 diffusion permeable layer having a high A1 concentration that does not peel off only on the surface.
- Oxidation resistance, corrosion resistance, abrasion resistance, thermal shock resistance, and mechanical shock resistance, especially at high temperatures, can be improved without impairing the mechanical properties of the base material. It has been found that the above object can be achieved.
- the present invention provides a metal-made metal having an A 1 concentration of 10 to 5% by weight and a thickness of 200 to 800 / m provided on the surface by performing a calorizing treatment.
- the present invention provides a water-cooled jacket for an electric arc furnace.
- the material of the water-cooled jacket of the present invention is: 13 Standard 33400, ordinary steel represented by SGP (carbon content less than 1.0%, each content of Si, Mn, Cr and Ni less than 2.0%) Steel) force preferred.
- SGP carbon content less than 1.0%, each content of Si, Mn, Cr and Ni less than 2.0%) Steel
- the use of stainless steel JIS standard SUS 304, which is known as heat and corrosion resistant steel, improves heat and corrosion resistance.
- Thermal conductivity is about one-third smaller than ordinary steel!
- the effect of cooling the steel sheet by water is small, so that the temperature of the steel sheet increases, so that the steel sheet tends to be distorted and cracked.In addition, it has the property of easily cracking in the welded portion compared to ordinary steel. I can't help.
- the A 1 concentration at the outermost surface (the area from the outermost surface to a depth of 20 zm)
- the surface hardness of the A1 diffusion / penetration layer is generally 350 to 100 OmHV, which is 3 to 7 times that of the base metal, and has extremely excellent wear resistance even at high temperatures.
- the calorizing process usually consists of a mixture of iron-aluminum alloy powder with an aluminum concentration of 20 to 60%, or aluminum powder 10 to 80 wt%, alumina powder 20 to 90 wt%, and ammonium permeate powder 0.1 to 2 wt% as a penetration enhancer.
- a semi-closed container is filled with a penetrant and a material to be treated, that is, a water-cooled jacket made exclusively of ordinary steel as described above, and the container is filled with a non-oxidizing atmosphere, preferably an argon, nitrogen, hydrogen, or other non-oxidizing atmosphere. This is carried out by heating and maintaining at a temperature of 600 to 1100 ° C for 5 to 20 hours in a heating furnace while maintaining an active gas or reducing gas atmosphere.
- the water-cooled jacket for the arc type electric furnace that has been calorized in this way has improved oxidation resistance, corrosion resistance, and wear resistance at high temperatures, and reduces the occurrence of distortion due to thermal shock. Cracking is prevented from occurring in welds and the like due to improved impact resistance, and water leakage is unlikely to occur even when used for a long time, so its life can be significantly extended. It was unexpected that the calorizing treatment significantly improved the impact resistance of the water-cooled jacket at high temperatures.
- FIG. 1 (a) is a plan view of a water-cooled jacket for a furnace inner wall used in Example 1, and FIG. 1 (b) is a cross-sectional view taken along line X_X of (a).
- FIG. 2 is a cutaway view of the water-cooled jacket for ceiling.
- FIG. 3 is a cross-sectional view of a water-cooled jacket for a dust collection port used in Example 2.
- FIG. 4 (a) is a plan view of the ceiling water-cooled jacket used in the third embodiment.
- FIG. 4B is a cross-sectional view taken along the line Y--Y of FIG.
- the water-cooled jacket for the furnace inner wall of the present invention shown in Fig. 1 was installed on the inner wall of an arc furnace for steelmaking with a nominal melting amount of 80 tons, especially on the part with a short life, and a comparison test was conducted with the conventional product.
- the main body is assembled into a box shape by welding ordinary steel sheet SS400 with a thickness of 16 mm, and although not shown in the figure, the interior is subdivided into small chambers, and It is designed so that the cooling water at 0 ° C is evenly distributed.
- the outer surface of the water-cooled jacket that is, the inner surface of the furnace, was welded with 45 plate-like slag catchers 2 of material SS400 having a thickness of 25 mm, a width of 50 mm, and a length of 130 mm. It is fixed and used without refractory coating on the surface, and the slag generated during the scrap melting and refining process is positively fixed to the surface, thereby preventing the formation of the protective layer of the water-cooled jacket. I have.
- the slag cutter promotes slag sticking and thus has an effect of extending the life, but the protective layer formed nevertheless repeats thermal shock during operation and causes Part of the water-cooled jacket is exposed due to mechanical shock when the cap is inserted, and the surface of the water-cooled jacket is exposed.
- the slag sticks to the surface and drops off again.
- the slag catcher corrodes and loses its thickness and the slag capturing effect decreases during repeated solidification and removal.
- Intense thermal and mechanical shocks caused by high-temperature slag droplets cause cracks in the slag catcher-one weld, the main body weld, and the steel plate on the surface, and water leakage starts.
- cracks, especially from the slag catcher welds occur, and water leakage starts. Is durable.
- Carolizing treatment is performed on the water-cooled jacket for the furnace inner wall of the material and size as described above.
- a water-cooled jacket and a penetrant made by mixing 70 wt% of iron-aluminum alloy powder with an AI concentration of 50 wt%, 29 wt% of alumina powder, and lwt% of ammonium chloride are placed in a semi-closed container. Filled and heated in a non-oxidizing atmosphere at 100 0 for 10 hours, A1 diffusion at the outermost surface of 35 wt%, surface hardness of 45 OmHV, thickness of 400 zm A1 diffusion penetration Layer obtained.
- a water cooling jacket for a dust collecting port of the present invention shown in FIG. 3 was attached to a steelmaking arc type electric furnace having a nominal melting amount of 50 tons, and a comparison test with a conventional product was performed.
- Fig. 3 is a cross-sectional view.
- the water cooling tube is formed by winding one long pipe almost spirally, the inside of both ends is connected to the water supply port, and the other is connected to the drain port, and it is always 40 to 70 °. C cooling water is flowing.
- the inner surface of the water-cooled tube is welded with M12 bolts with a total length of 25 mm and an outer diameter of 12 mm at a pitch of 10 Omm as a stud. It is fixed.
- the water-cooled pipe uses carbon steel pipe for pressure piping, JIS standard STPG 4 OA sch (schedule) 80, wall thickness 5.1 mm, and its entire circumference is a fire-resistant castle with a thickness of 110 to 130 mm. Coated with 6.
- the electric furnace / slurry flows upward from the bottom of the figure, and the dust collection rocket is installed at almost the same height as the furnace ceiling, and is at a distance away from the slag surface. I can't.
- the slag adheres to the castell that protects the water cooling tube during the beginning, but if the amount of adhesion increases, the weight can no longer be retained, and the castall coating layer peels off from the middle and falls into the furnace with the adhered slag. .
- Example 2 For a water-cooled jacket made of carbon steel pipe of the material and size as described above and not yet coated with a refractory, first, calorizing treatment was performed under the same conditions as in Example 1. An A1 diffusion-penetrating layer having an A1 concentration of 35 wt%, a surface hardness of 45 OmHV, and a thickness of 400 m was obtained. Next, the pipe is treated with caster-pulling. That is, the powder of the refractory and the binder is kneaded with water, and this liquid and the material to be treated are put together in a frame, left to dry and harden. A layer of castaple having a thickness of 13 O mm was formed.
- a ceiling water-cooled jacket with a cylindrical slag catcher 10 formed by welding steel bars at regular intervals to the outside of the main body 9 is made of ordinary steel sheet SS 400 with a thickness of 16 mm. This was assembled in the most damaging and short-lived part of a steelmaking arc electric furnace with a nominal melting amount of 60 tons, and compared with the conventional product.
- the water-cooled jacket for ceiling unlike the inner wall, etc., it is difficult to repair the welding, so if water leakage starts, it will be replaced as soon as possible after a short time, and the replacement time is 7 to 10 months .
- the water-cooled jacket of such a material and shape is subjected to calorizing treatment by heating at 180 ° C for 20 hours using the same penetrant as in Example 1, and the outermost surface is formed on the slag catcher and the body surface.
- An A1 diffusion-penetrating layer having an A1 concentration of 40 wt%, a surface hardness of 500 mHV, and a thickness of 700 was obtained.
- This water-cooled jacket of the present invention is being used by attaching it to the same part as the conventional product, and it has been 15 months now, but no water leakage has occurred.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15760598A JP3447563B2 (ja) | 1998-06-05 | 1998-06-05 | アーク式電気炉用水冷ジャケット |
| CA002393264A CA2393264C (en) | 1998-06-05 | 1999-12-03 | Water-cooling jackets for electric arc furnaces |
| DE69936272T DE69936272T2 (de) | 1998-06-05 | 1999-12-03 | Wassermantel für einen elektrolichtbogenofen |
| PCT/JP1999/006806 WO2001040728A1 (fr) | 1998-06-05 | 1999-12-03 | Chemise de refroidissement pour four a arc |
| EP99957413A EP1253390B1 (en) | 1998-06-05 | 1999-12-03 | Water jacket of arc furnace |
| ES99957413T ES2288030T3 (es) | 1998-06-05 | 1999-12-03 | Camisas de refrigeracion por agua para hornos de arco electrico. |
| US10/148,594 US6563855B1 (en) | 1998-06-05 | 1999-12-03 | Water jacket of arc furnace |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15760598A JP3447563B2 (ja) | 1998-06-05 | 1998-06-05 | アーク式電気炉用水冷ジャケット |
| PCT/JP1999/006806 WO2001040728A1 (fr) | 1998-06-05 | 1999-12-03 | Chemise de refroidissement pour four a arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001040728A1 true WO2001040728A1 (fr) | 2001-06-07 |
Family
ID=26440223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1999/006806 Ceased WO2001040728A1 (fr) | 1998-06-05 | 1999-12-03 | Chemise de refroidissement pour four a arc |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6563855B1 (ja) |
| EP (1) | EP1253390B1 (ja) |
| JP (1) | JP3447563B2 (ja) |
| CA (1) | CA2393264C (ja) |
| DE (1) | DE69936272T2 (ja) |
| ES (1) | ES2288030T3 (ja) |
| WO (1) | WO2001040728A1 (ja) |
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| US7582253B2 (en) | 2001-09-19 | 2009-09-01 | Amerifab, Inc. | Heat exchanger system used in steel making |
| US6890479B2 (en) * | 2001-09-19 | 2005-05-10 | Amerifab, Inc. | System and method for steel making |
| US20040185277A1 (en) * | 2003-02-14 | 2004-09-23 | Marcio Gerep | Stud with enhanced surface |
| US7322155B2 (en) | 2003-02-18 | 2008-01-29 | Sage Of America, Inc. | Stud with heat sink |
| US6870873B2 (en) * | 2003-05-28 | 2005-03-22 | Systems Spray-Cooled, Inc. | Device for improved slag retention in water cooled furnace elements |
| US7951325B2 (en) | 2006-05-17 | 2011-05-31 | Air Liquide Advanced Technologies U.S. Llc | Methods of implementing a water-cooling system into a burner panel and related apparatuses |
| US7824604B2 (en) * | 2006-05-17 | 2010-11-02 | Air Liquide Advanced Technologies U.S. Llc | Methods of implementing a water-cooling system into a burner panel and related apparatuses |
| FI121351B (fi) * | 2006-09-27 | 2010-10-15 | Outotec Oyj | Menetelmä jäähdytyselementin pinnoittamiseksi |
| WO2008150806A1 (en) * | 2007-05-31 | 2008-12-11 | Amerifab, Inc. | Adjustable heat exchange apparatus and method of use |
| CN102040215B (zh) * | 2009-10-22 | 2013-01-23 | 沈阳铝镁设计研究院有限公司 | 罐式炭素煅烧炉冷却水套排汽装置 |
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| CN108692573B (zh) * | 2018-07-18 | 2024-06-14 | 锦州天晟重工有限公司 | 工业硅及硅铁电炉专用水冷大套 |
| US11390551B2 (en) * | 2019-10-01 | 2022-07-19 | Owens-Brockway Glass Container Inc. | Cooling panel for a melter |
| US11435120B2 (en) | 2020-05-05 | 2022-09-06 | Echogen Power Systems (Delaware), Inc. | Split expansion heat pump cycle |
| EP4237775A4 (en) | 2020-11-02 | 2024-10-30 | Amerifab, Inc. | MULTIPLE HALF-PIPE HEAT EXCHANGE SYSTEM FOR ELECTRIC ARC, METALLURGICAL OR REFINING FURNACES AND CORRESPONDING SYSTEM |
| US11629638B2 (en) | 2020-12-09 | 2023-04-18 | Supercritical Storage Company, Inc. | Three reservoir electric thermal energy storage system |
| CN113945094A (zh) * | 2021-10-09 | 2022-01-18 | 山东中茂散热器有限公司 | 一种炉体恒温总成 |
| US12516855B2 (en) | 2022-10-27 | 2026-01-06 | Supercritical Storage Company, Inc. | High-temperature, dual rail heat pump cycle for high performance at high-temperature lift and range |
| AU2024289421A1 (en) | 2023-02-07 | 2025-09-11 | Supercritical Storage Company, Inc. | Waste heat integration into pumped thermal energy storage |
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| JPS5424693B2 (ja) * | 1974-07-01 | 1979-08-23 | ||
| JPH018947Y2 (ja) * | 1984-03-29 | 1989-03-10 | ||
| JPH08193257A (ja) * | 1995-01-17 | 1996-07-30 | Nippon Steel Corp | 高温雰囲気炉の内張り用金属板 |
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| DD131380A1 (de) * | 1977-06-08 | 1978-06-21 | Vladimir I Andrjuseckin | Verfahren zur erhoehung der lebensdauer von aluminiumdiffusionsschichten |
| JPS5424693A (en) | 1977-07-27 | 1979-02-24 | Ricoh Co Ltd | Measuring method of superface strength of roller made of elastic material |
| PL220170A1 (ja) * | 1979-12-06 | 1981-06-19 | Politechnika Slaska Im Wincent | |
| US4637034A (en) * | 1984-04-19 | 1987-01-13 | Hylsa, S.A. | Cooling panel for electric arc furnace |
| JP2612271B2 (ja) | 1987-06-30 | 1997-05-21 | 株式会社トプコン | 非接触式眼圧計 |
| US5426664A (en) * | 1994-02-08 | 1995-06-20 | Nu-Core, Inc. | Water cooled copper panel for a furnace and method of manufacturing same |
| US6137823A (en) * | 1999-01-26 | 2000-10-24 | J. T. Cullen Co., Inc. | Bi-metal panel for electric arc furnace |
-
1998
- 1998-06-05 JP JP15760598A patent/JP3447563B2/ja not_active Expired - Lifetime
-
1999
- 1999-12-03 ES ES99957413T patent/ES2288030T3/es not_active Expired - Lifetime
- 1999-12-03 DE DE69936272T patent/DE69936272T2/de not_active Expired - Lifetime
- 1999-12-03 CA CA002393264A patent/CA2393264C/en not_active Expired - Lifetime
- 1999-12-03 WO PCT/JP1999/006806 patent/WO2001040728A1/ja not_active Ceased
- 1999-12-03 US US10/148,594 patent/US6563855B1/en not_active Expired - Lifetime
- 1999-12-03 EP EP99957413A patent/EP1253390B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424693B2 (ja) * | 1974-07-01 | 1979-08-23 | ||
| JPH018947Y2 (ja) * | 1984-03-29 | 1989-03-10 | ||
| JPH08193257A (ja) * | 1995-01-17 | 1996-07-30 | Nippon Steel Corp | 高温雰囲気炉の内張り用金属板 |
Non-Patent Citations (1)
| Title |
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| See also references of EP1253390A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2393264A1 (en) | 2001-06-07 |
| EP1253390B1 (en) | 2007-06-06 |
| CA2393264C (en) | 2007-05-01 |
| DE69936272T2 (de) | 2008-03-06 |
| EP1253390A4 (en) | 2005-01-19 |
| JP3447563B2 (ja) | 2003-09-16 |
| ES2288030T3 (es) | 2007-12-16 |
| JPH11351758A (ja) | 1999-12-24 |
| DE69936272D1 (de) | 2007-07-19 |
| US6563855B1 (en) | 2003-05-13 |
| EP1253390A1 (en) | 2002-10-30 |
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