CN1154720A - Nozzle for blowing gas into molten metal and usage thereof - Google Patents
Nozzle for blowing gas into molten metal and usage thereof Download PDFInfo
- Publication number
- CN1154720A CN1154720A CN96190548A CN96190548A CN1154720A CN 1154720 A CN1154720 A CN 1154720A CN 96190548 A CN96190548 A CN 96190548A CN 96190548 A CN96190548 A CN 96190548A CN 1154720 A CN1154720 A CN 1154720A
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- CN
- China
- Prior art keywords
- nozzle
- gas
- stove
- blowing gas
- thin tube
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- 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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
- B22D1/005—Injection assemblies therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A nozzle for blowing a gas into a molten metal without causing the leakage of gas from its periphery, which has a simple structure and a long life, so that it does not require frequent replacements. And its usage method. The gas blowing nozzle comprises a refractory block formed unitarily with a metallic mounting member and provided with a small diameter through hole therein, and a small-diameter metallic gas blowing tube inserted slidably through the small-diameter hole. When the gas blowing nozzle and the surrounding refractory are worn, the metallic gas blowing tube is extended into the interior of a furnace, and a worn portion is repaired by packing a repairing material therein.
Description
Technical field
The present invention relates to the nozzle for blowing gas into of the molten metal in the refining furnace beyond a kind of electric furnace and the electric furnace, particularly relate to a kind of nozzle for blowing gas into and using method thereof of the molten metal of can be easy when the nozzle loss, promptly repairing.
Background technology
Seeing also shown in Figure 5ly, is the explanation synoptic diagram of embodiment of the nozzle for blowing gas into of prior art; Wherein, Fig. 5 (a) is the single tube nozzle; Fig. 5 (b) is dual pipe nozzle; Fig. 5 (c) is the multitube nozzle; Fig. 5 (d) is porous plug (stopper).Among the figure, the 10th, gas supply pipe, the 11st, furnace bottom refractory body, the 12nd, the gas that is blown into, the 17th, cooling gas supply-pipe, the 18th, perforated brick, in the multitube nozzle of Fig. 5 (c), imbed the refractory body piece that is provided with the complex root thin metal pipe, use this kind multitube nozzle, in molten metal, can obtain the bubble that is blown into gas fine and of the same size, be blown into nozzle in the furnace bottom of electric furnace so using gas is set widely.
Be blown into gas from nozzle for blowing gas in molten metal, then the molten metal around the nozzle for blowing gas into of stove inboard flows consumingly, and institute is so that the loss of refractory body is big, for example as shown in Fig. 2 (a), and generation loss portion 8.Loss portion 8 becomes big, will change nozzle for blowing gas into.When changing nozzle for blowing gas into, the operation of stove will stop, and change the environment very severe of operation.Therefore frequent replacing nozzle for blowing gas into is bad.
In Japanese kokai publication sho 58-81937 communique, disclose a kind of refining gas and be blown into plug (stopper), it is characterized in that it comprises the nozzle that refractory body with communicating pores is made, in this communicating pores, insert metal system tubule, between this communicating pores and metal tubule, be provided with annular gap.
Fig. 6 is the explanation synoptic diagram that refining gas is blown into plug.Shown in Fig. 6 (a), between the communicating pores of refractory body and metal metal thin tube 2, be provided with annular gap, in 2 li bindings of metal thin tube gas supply pipe is arranged, the size of annular gap is not leaked with molten metal and is as the criterion.During repairing, only need to change this metal thin tube 2, and can be so that simplified control.
But the inventor thinks, is blown into plug with this refining gas and carries out being blown into of gas, adds the pressure of molten metal, and as shown in Fig. 6 (b), gas will leak to the annular gap between metal metal thin tube 2 and the refractory body communicating pores.Particularly electric furnace furnace bottom gas be blown into seldom occasion of flow the time, although annular gap only has only some gaps, gas also can leak to the annular gap direction of passing through easily, and does not enter in the molten metal.Disclosed patent documentation does not have the technique means that proposition addresses this problem in the above-mentioned communique.
Technical scheme of the present invention
The invention provides a kind of nozzle for blowing gas into and using method thereof of molten metal, make it can reduce the replacing nozzle for blowing gas into, equally also can reduce the stopping production number of times of stove, moreover also reduce the frequency of in severe environment, working, and not have gas leakage at the periphery of nozzle for blowing gas into.
Fig. 1 is the explanation synoptic diagram of nozzle for blowing gas into embodiment of the present invention.Fig. 1 (a) is the longitudinal section explanation synoptic diagram of nozzle for blowing gas into.Fig. 1 (b) is the explanation synoptic diagram that nozzle for blowing gas into is arranged on furnace bottom among Fig. 1 (a).Fig. 1 (c) is the explanation synoptic diagram of embodiment of the connection section that is blown into flexible pipe of nozzle for blowing gas into and supply gas.
According to the nozzle for blowing gas into 1 that the invention provides a kind of molten metal, it is characterized in that its side direction stove outside in the stove is respectively equipped with the refractory body piece 4 of the pore 3 with perforation, the installation part 22 integrally formed with refractory body piece 4, the pore 3 that is positioned at above-mentioned refractory body piece 4 connects the metal thin tube 2 of this pore 3 and energy slide arrangement, and be provided with gas and be blown into the binding part 23 that flexible pipe 15 is connected, the end that this gas is blown into flexible pipe 15 and above-mentioned installation part 22 is connected, the stove outside of above-mentioned metal thin tube 2 is inserted wildcard and is provided with the rubber bodies 14 that is arranged in the binding part 23, and the stove medial extremity that is blown into gas from supply is blown into the stove outside of gas 12 to this metal thin tube 2 to molten metal.
The end that part 22 is installed is designed to be straight tube-like portion, and the other end then is designed to be the pallet shape portion that matches with the bottom shape of refractory body piece 4, and refractory body piece 4 is entrenched in the pallet shape portion of this installation part 22.Like this, refractory body piece 4 and installation part 22 are configured as one, and be then such shown in Fig. 6 (b), can prevent to be blown into from the gap of metal thin tube 2 and refractory body piece 4 leakage of gas.
See also shown in Fig. 1 (c), the end that the straight tube-like portion of part 22 is installed is connected with an end that links part 23, and the other end of this binding part 23 and gas are blown into flexible pipe 15 and are connected.
The end of metal thin tube 2 is inserted logical being configured in and is located in the rubber bodies 14 that links in the part 23, and is blown into flexible pipe 15 pleurapophysis to gas and stretches out.The gap of the periphery of metal thin tube 2 and the inner face that links part 23 is by rubber bodies 14 sealings, supplies with in metal thin tube 2 and sends into whole gases 12 that are blown into and be blown into flexible pipe 15 from gas.
In Fig. 1 the embodiment that uses 1 metal thin tube 2, also can use complex root metal thin tube 2, similarly, these each metal thin tubes 2 all are equipped with rubber bodies 14 with the gap that links part 23 inner faces, whole gas 12 that is blown into can be supplied with each metal thin tube 2.
Shown in Fig. 1 (b), nozzle for blowing gas into 1 of the present invention is installed in the inboard of the gas ejector pipe brick (tuyere brick) 6 that is provided with furnace bottom refractory body 11, support ring 21 and stopping on the iron sheet 19 that part 20 is installed in stove.At this moment, in the gap of nozzle for blowing gas into 1 and gas ejector pipe brick 6, fill the unsetting refractory body 5 of ash, mortar and moulded by casting etc.
As metal thin tube 2, for example can use that internal diameter is the stainless steel tube of 1-2mm, suitably selected but the internal diameter of this metal thin tube 2 and number will adapt with the gas volume that is blown into.In addition, this metal thin tube 2 can use single tube, also can use dual pipe.The internal diameter of pore 3 is the scope than the big 0-4mm of external diameter of metal thin tube 2, can make metal thin tube 2 upper and lower moving.
Fig. 2 is the explanation synoptic diagram of the using method embodiment of nozzle for blowing gas into of the present invention.Nozzle for blowing gas into 1 of the present invention uses because of repeatable operation, so the stove of nozzle for blowing gas into 1 is inboard and its peripheral refractory body loss is big, can produce loss portion 8 like that shown in Fig. 2 (a).Shown in Fig. 2 (b), when repairing this loss portion 8, move up and be located at metal thin tube 2 in the pore 3, its upper end stretches out to the stove inboard.
Then, the stove inner side end of metal thin tube 2 is not blocked (readding plug), shown in Fig. 2 (c), in this loss portion 8, fill resistivity against fire patching material 16.In the present embodiment, the end of metal thin tube 2 stove inboards is more outstanding than the surface of having filled resistivity against fire patching material 16, metal thin tube 2 is outstanding in this wise to be provided with, be because when repairing, use the interior resistivity against fire patching material 16 of common stove to repair this loss portion 8, and use sandslinger for example etc. to repair the device of stove inner face usually, because the stove medial end of this metal thin tube 2 is not embedded in the resistivity against fire patching material 16, so it can not get clogged.
Use nozzle for blowing gas into 1 of the present invention, and when carrying out the repairing of furnace bottom and furnace wall loss portion 8 as routine work, can repair this nozzle for blowing gas into 1 and periphery thereof simply, the repairing of this routine work can prolong the work-ing life of nozzle for blowing gas into 1, can reduce the replacing frequency of nozzle for blowing gas into 1 significantly.
Shown in Fig. 2 (c), after repairing is finished, be blown into gas to molten metal, the directly molten damage of the protuberance of metal thin tube 2, it is identical with the shape that the gas shown in Fig. 1 (b) is blown into mouth that the gas of molten metal is blown into mouth, promptly the situation with Fig. 1 (b) is identical, can stably carry out gas to molten metal and be blown into.
Fig. 3 is the explanation synoptic diagram of another embodiment of nozzle for blowing gas into of the present invention; Fig. 3 (a) is the longitudinal section explanation synoptic diagram of this nozzle for blowing gas into; Fig. 3 (b) is the explanation synoptic diagram that the nozzle for blowing gas among Fig. 3 (a) is configured in furnace bottom.
Shown in Fig. 3 (a), nozzle for blowing gas into 1 is characterized in that refractory body piece 4 upwards is divided into two at upper and lower, and other structure is all identical with the nozzle for blowing gas into shown in Fig. 1 (a).Installation part 22 its ends among Fig. 3 (a) like that, are blown into flexible pipe 15 by binding part 23 with gas and are connected shown in Fig. 1 (c), and the periphery of metal thin tube 2 is by being provided with rubber bodies 14 sealings, and is identical with the nozzle for blowing gas into of Fig. 1.
Again, shown in Fig. 3 (b), this nozzle for blowing gas into 1 is installed in the inboard of the gas ejector pipe bricks 6 that are provided with in the furnace bottom refractory body 11, by support ring 21 with stop in the iron sheet 19 that part 20 is installed in stove.At this moment, be filled with the unsetting refractory body of ash, mortar and moulded by casting etc. in the gap of nozzle for blowing gas into 1 and gas ejector pipe brick 6.
Fig. 4 is the explanation synoptic diagram of another using method of nozzle for blowing gas into of the present invention embodiment shown in Figure 3.Shown in Fig. 4 (a), when repairing loss portion 8, be moved upward the metal thin tube 2 in the pore 3, make its end side-prominent in stove, take out the molten refractory body piece 4a that decreases the upper portion of back refractory body piece 4, then, shown in Fig. 4 (b), change the refractory body piece 4a of new upper portion, use brick 4a, in the loss portion 8 around it, fill resistivity against fire patching material 16 hereinafter referred to as repairing.The upper end that will make metal thin tube 2 then is identical with the upper surface height of repairing with brick 4a, then moving metal tubule 2 downwards.
Using method as shown in Figure 4, it is in the occasion of using resistivity against fire patching material 16 to repair, and prolonged the work-ing life of the nozzle for blowing gas into after the repairing.Moreover after repairing, metal thin tube 2 is not outstanding, so the waste of metal thin tube 2 can reduce.
Brief Description Of Drawings
Fig. 1 is the explanation synoptic diagram of nozzle for blowing gas into embodiment of the present invention.
Fig. 2 is the explanation synoptic diagram of the using method embodiment of nozzle for blowing gas into of the present invention.
Fig. 3 is the explanation synoptic diagram of another embodiment of nozzle for blowing gas into of the present invention.
Fig. 4 is the explanation synoptic diagram of another using method of nozzle for blowing gas into of the present invention embodiment.
Fig. 5 is the explanatory view of the nozzle for blowing gas into embodiment of prior art.
Fig. 6 is the explanation synoptic diagram that refining gas is blown into plug.
Most preferred embodiment of the present invention
Below in conjunction with accompanying drawing and preferred embodiment, nozzle for blowing gas into and its concrete structure of using method, feature, using method and the effect thereof of the molten metal that foundation the present invention is proposed, describe in detail as after.
See also shown in Fig. 1 (a), being provided with an internal diameter in refractory body piece 4 is the pore 3 of 5mm, uses and be provided with the nozzle for blowing gas into 1 that the gas that begins from furnace bottom is blown into usefulness in electric furnace.Shown in Fig. 1 (c), making metal metal thin tube 2 be designed to internal diameter is 2mm, and external diameter is 4mm, and long 2m is provided with on metal thin tube 2 and links part 23, the gas that is blown into supply.
Its amount of being blown into of gas that is blown into to metallic solution is 30-100 1/min.The stove inboard of nozzle for blowing gas into 1 is when being approximately the 200mm loss point, the supply gas that disassembles Fig. 1 (c) is blown into flexible pipe 15, make the stove medial end of metal thin tube 2 and the furnace bottom refractory body 11 after the repairing become same height, after being moved upward metal thin tube 2, making binding part 23 be blown into flexible pipe 15 again and be connected with supply gas.As patching material, unsetting refractory body 5 is used in the repairing of furnace bottom usually.For the obstruction of the end that prevents metal thin tube 2 stove inboards, during the filling and repairing material, should flow from nozzle for blowing gas into 1 is blown into gas.
This repairing is carried out after 4-5 time repeatedly, the metal thin tube 2 that will more renew, promptly, carry out above-mentioned operation and repairing, moving metal tubule 2 is during with the metal thin tube 2 that more renews, the situation that in the gap of pore 3 and metal thin tube 2, has molten metal to invade, beat metal thin tube 2 from the below this moment, and this metal thin tube 2 promptly can easily move.
When the degree of depth of the molten damage loss portion 8 of nozzle for blowing gas into 1 reaches 300mm, the nozzle for blowing gas into 1 that will more renew, after nozzle for blowing gas into 1 of the present invention is repaired, (still can use more than the チ ヤ-ヅ) at 300 loads, it is compared with the existing nozzle for blowing gas into that will change about 50 loads at every turn, and there has been significant raising in the life-span.
Then, in conjunction with shown in Figure 3, the investigation that improves effect of the time limit of service of the nozzle for blowing gas into that separation type is constructed is described.As shown in table 1, be the comparative example of the nozzle for blowing gas into of nozzle for blowing gas among Fig. 1 and Fig. 3 and separation type structure.
Table 1
| Situation | ??????????1 | ??????????2 |
| The nozzle kind | The nozzle (Fig. 3) of cutting apart structure | The nozzle of Construction integration (Fig. 1) |
| Method for repairing and mending | Use the brick (4a) of repairing usefulness to repair | Only repair with patching material |
| Once repair the life-span (time) | ??????170～200 | ??????170～200 |
| Secondary is repaired the life-span (time) | ??????170～200 | ???????80～100 |
| Standard is repaired number of times (number of times/life-span) | ??????????5 | ??????????4 |
| Nozzle life (time) | ????????1150 | ?????????550 |
Situation 1 in the table 1, the situation the when nozzle for blowing gas into that is to use separation type shown in Figure 3 to construct is repaired.After the gas that carries out 170-200 hour is blown into operation, remove the upper portion refractory body piece 4a after the molten damage, after being moved upward metal thin tube 2, change new upper portion refractory body piece 4a, on this new upper portion refractory body piece 4a and lower portion refractory body piece 4b, be folded with ash, mortar, at this moment, in the pore gap of metal thin tube 2 and the brick of repairing usefulness, be filled with the refractory body of non-air permeability.
Then, fill loss portion with patching material, primary repairing is finished.Carry out the second time after re-using 170-200 hour and repair, until repairing to carrying out the 5th time.When the repairing of even number time, change gas ejector pipe brick 6 (epimere).
Refractory body piece 4 (the upper portion refractory body piece 4a on top) and repairing use length to be 200mm with brick, and the surplus size during repairing is 50-100mm.After repairing for the 5th time, carry out 170-200 hour use, and check and change nozzle for blowing gas into 1, but refractory body piece (the lower portion refractory body piece 4b of bottom) molten damage etc. can not deal with, and can continue to use.
After the gas that carries out 170-200 hour was blown into operation, the sliding metal tubule 2 upward, till the high position of molten damage portion than nozzle, fill atypic refractory body and repair in the molten damage portion of gas ejector pipe brick and refractory body piece.From now on, every use 80 to 100 hours will be carried out same repairing, carry out altogether three times, and every use will be changed nozzle and gas ejector pipe brick after 80 to 100 hours.At this moment the molten damage size of nozzle is at 250mm to 300mm, the molten damage of gas ejector pipe brick (stage casing) is not handled, repair repeatedly like this and continue to use, up to the molten damage of gas ejector pipe brick (stage casing), the replacing operation of this gas ejector pipe brick, it is difficult repairing in the regular hour, because will implement to change nozzle and gas ejector pipe brick (epimere) before this.
As can be seen from Table 1, situation 1 is the nozzle for blowing gas into of separation type structure, every repairing once work-ing life and can carry out the number of times that standard repairs and increase, the total nozzle of a nozzle can prolong work-ing life significantly.
Use nozzle for blowing gas into of the present invention, make that when changing nozzle for blowing gas into, the frequency that stove stops to produce descends, the also corresponding minimizing of frequency of same operation in severe environment, moreover, can gas leakage from nozzle periphery.The simple structure of nozzle can reduce manufacturing cost.
Claims (4)
1. the nozzle for blowing gas into of a molten metal, it is characterized in that: the side direction stove outside is provided with the refractory body piece (4) that linearity connects pore (3) in the stove, the installation part (22) integrally formed with this refractory body piece (4), be positioned at the metal thin tube (2) of this pore of perforation slidably (3) that the pore (3) of above-mentioned refractory body piece (4) sets, and be provided with gas and be blown into the binding part (23) that flexible pipe (15) is connected, the end of this installation part (22) and above-mentioned gas are blown into flexible pipe (15) and are connected, the end in the stove outside of above-mentioned metal thin tube (2) is inserted wildcard and is provided with the rubber bodies (14) that is arranged in the binding part (23), and the end that is blown into the stove inboard of gas from supply is blown into the stove outside of gas (12) to this metal thin tube (2) to molten metal.
2. using method of using the nozzle for blowing gas into of claim 1 molten metal, it is characterized in that it is equipped with the stove of the nozzle for blowing gas into of molten metal, when repairing inboard and its peripheral loss portion (8) of the stove of this nozzle for blowing gas into, move the metal thin tube (2) in the above-mentioned pore (3), this loss portion (8) is side-prominent in stove, the end that prevents the stove inboard of this metal thin tube (2) is blocked, and fills resistivity against fire patching material (16) in this loss portion (8).
3. the nozzle for blowing gas into of molten metal according to claim 1 is characterized in that above-mentioned refractory body piece (4) upwards is divided into more than two at upper and lower.
4. using method of using the nozzle for blowing gas into of claim 3 molten metal, it is characterized in that it is equipped with the stove of the nozzle for blowing gas into of molten metal, when repairing inboard and its peripheral loss portion (8) of the stove of this nozzle for blowing gas into, move the above-mentioned metal thin tube (2) in the above-mentioned pore (3), this loss portion (8) is side-prominent in stove, the end that prevents the stove inboard of this metal thin tube (2) is blocked, when continuing to supply the refractory body piece of repairing usefulness, in nozzle loss portion (8), fill resistivity against fire patching material (16).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP126107/95 | 1995-05-25 | ||
| JP126107/1995 | 1995-05-25 | ||
| JP12610795 | 1995-05-25 | ||
| JP324447/1995 | 1995-12-13 | ||
| JP7324447A JPH0941024A (en) | 1995-05-25 | 1995-12-13 | Gas blowing nozzle into molten metal and its using method thereof |
| JP324447/95 | 1995-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1154720A true CN1154720A (en) | 1997-07-16 |
| CN1053015C CN1053015C (en) | 2000-05-31 |
Family
ID=26462336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96190548A Expired - Fee Related CN1053015C (en) | 1995-05-25 | 1996-05-23 | Nozzle for blowing gas into molten metal and usage thereof |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0776983B1 (en) |
| JP (2) | JPH0941024A (en) |
| KR (1) | KR100349870B1 (en) |
| CN (1) | CN1053015C (en) |
| CA (1) | CA2195541A1 (en) |
| DE (1) | DE69615508T2 (en) |
| WO (1) | WO1996037632A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385017C (en) * | 2003-10-15 | 2008-04-30 | 梅尔茨-高特希工业熔炉设备有限责任公司 | Industrial furnace and associated jet element |
| CN101796362B (en) * | 2007-09-10 | 2013-03-20 | 新日铁住金株式会社 | Tuyere structure of smelting furnace |
| CN102164695B (en) * | 2008-07-28 | 2014-03-12 | 新日铁住金株式会社 | Refractory for nozzle used in continuous casting and nozzle for continuous casting |
| CN105517728A (en) * | 2014-05-05 | 2016-04-20 | 里弗雷克特里知识产权两合公司 | Refractory ceramic gas purging element |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2685248T3 (en) | 2014-09-29 | 2018-10-08 | Refractory Intellectual Property Gmbh & Co. Kg | Fixing device for a cylindrical ceramic hollow body and a refractory ceramic gas purge plug with such a fixing device |
| JP6563034B2 (en) * | 2015-12-17 | 2019-09-04 | 東京窯業株式会社 | Bottom blow plug with improved workability |
| JP7107141B2 (en) * | 2018-09-27 | 2022-07-27 | 日本製鉄株式会社 | Converter tuyere structure |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952216B2 (en) * | 1979-05-24 | 1984-12-18 | 住友金属工業株式会社 | How to replace the gas blowing nozzle |
| JPS5881937A (en) * | 1981-11-12 | 1983-05-17 | Kawasaki Steel Corp | Plug for injecting refining gas |
| JPS5952216A (en) * | 1982-09-20 | 1984-03-26 | Canon Inc | Plural beam optical deflector |
| DE3311617C1 (en) * | 1983-03-30 | 1984-10-25 | Messer Griesheim Gmbh, 6000 Frankfurt | Method and device for rinsing a molten metal, in particular steel, in a ladle |
| JPS6030834A (en) * | 1983-07-14 | 1985-02-16 | Fuji Electric Co Ltd | Disk brake device |
| DE3545763A1 (en) * | 1985-12-21 | 1987-06-25 | Didier Werke Ag | GAS PUMP PLUG FOR A MELTING VESSEL |
| JPS6489947A (en) * | 1987-09-30 | 1989-04-05 | Aisin Seiki | Generating set for vehicle |
| JPH0630834Y2 (en) * | 1987-12-07 | 1994-08-17 | 川崎炉材株式会社 | Gas blown tuyere structure for molten metal containers |
| JPH01172507A (en) * | 1987-12-28 | 1989-07-07 | Nippon Steel Corp | Construction for fitting triple pie tuyere to furnace bottom |
| JPH0497835U (en) * | 1991-01-11 | 1992-08-25 | ||
| DE4213007C1 (en) * | 1992-04-21 | 1993-12-16 | Tech Resources Pty Ltd | Method and device for sealing nozzles in the surrounding refractory lining |
| JP4610946B2 (en) * | 2004-06-30 | 2011-01-12 | 株式会社島津製作所 | Odor identification method |
-
1995
- 1995-12-13 JP JP7324447A patent/JPH0941024A/en active Pending
-
1996
- 1996-05-23 CA CA002195541A patent/CA2195541A1/en not_active Abandoned
- 1996-05-23 JP JP53555896A patent/JP3894502B2/en not_active Expired - Lifetime
- 1996-05-23 KR KR1019970700435A patent/KR100349870B1/en not_active IP Right Cessation
- 1996-05-23 DE DE69615508T patent/DE69615508T2/en not_active Expired - Fee Related
- 1996-05-23 CN CN96190548A patent/CN1053015C/en not_active Expired - Fee Related
- 1996-05-23 WO PCT/JP1996/001356 patent/WO1996037632A1/en active IP Right Grant
- 1996-05-23 EP EP96914400A patent/EP0776983B1/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385017C (en) * | 2003-10-15 | 2008-04-30 | 梅尔茨-高特希工业熔炉设备有限责任公司 | Industrial furnace and associated jet element |
| CN101796362B (en) * | 2007-09-10 | 2013-03-20 | 新日铁住金株式会社 | Tuyere structure of smelting furnace |
| CN102164695B (en) * | 2008-07-28 | 2014-03-12 | 新日铁住金株式会社 | Refractory for nozzle used in continuous casting and nozzle for continuous casting |
| CN105517728A (en) * | 2014-05-05 | 2016-04-20 | 里弗雷克特里知识产权两合公司 | Refractory ceramic gas purging element |
| CN105517728B (en) * | 2014-05-05 | 2017-11-14 | 里弗雷克特里知识产权两合公司 | Refractory gas purges element |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2195541A1 (en) | 1996-11-28 |
| JP3894502B2 (en) | 2007-03-22 |
| CN1053015C (en) | 2000-05-31 |
| DE69615508D1 (en) | 2001-10-31 |
| JPH0941024A (en) | 1997-02-10 |
| KR100349870B1 (en) | 2003-01-06 |
| EP0776983A1 (en) | 1997-06-04 |
| DE69615508T2 (en) | 2002-05-29 |
| WO1996037632A1 (en) | 1996-11-28 |
| KR970704892A (en) | 1997-09-06 |
| EP0776983B1 (en) | 2001-09-26 |
| EP0776983A4 (en) | 1998-09-09 |
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