WO1995018237A1 - Tapping method of blast furnace - Google Patents
Tapping method of blast furnace Download PDFInfo
- Publication number
- WO1995018237A1 WO1995018237A1 PCT/JP1994/002240 JP9402240W WO9518237A1 WO 1995018237 A1 WO1995018237 A1 WO 1995018237A1 JP 9402240 W JP9402240 W JP 9402240W WO 9518237 A1 WO9518237 A1 WO 9518237A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slag
- hot metal
- tapping
- conduit
- blast 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- 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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
- F27B1/21—Arrangements of devices for discharging
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0054—Means to move molten metal, e.g. electromagnetic pump
Definitions
- the present invention relates to a blast furnace tapping method for discharging hot metal and slag, which are products of a blast furnace, from a blast furnace tap hole.
- Hot metal and slag generated in the blast furnace bottom are discharged from tapholes to tapholes by evening tapping.
- the tap hole diameter is small in the initial stage of tapping, and as the tapping progresses, the tap hole diameter (cross-sectional area) increases, and the discharge speed increases at an accelerated rate. For this reason, during the tapping process, the discharge speed overtakes the hot metal slag formation speed, and the level of hot metal and hot metal in the blast furnace bottom decreases.
- the level of molten metal and slag accumulated in the bottom of the blast furnace decreases, and when the upper level of the slag approaches the inside level of the tap hole, the furnace exits from the tap hole.
- this tap hole is closed and the evening tapping is terminated, and the other tap hole is opened and evening tapping is performed.
- tapping time from one tap hole is 2 to 4 hours, and evening tapping is performed alternately at this time interval using a pair of tap holes.
- Such a tapping operation has the following problems.
- Pre-furnace work associated with tapping involves tapping holes, closing work, tapping gutter and slag gutter repair work, and preparation work by repeating tapping, which is extremely heavy. It is hoped that these operations will be reduced. Due to wear, tapping time from one taphole is only 2 to 4 hours, and two tapholes are used alternately, requiring two groups of workers in front of the furnace, saving labor. Inhibits.
- Equipment for treating hot metal at the floor and slag treatment equipment for slag treatment requires equipment capacity corresponding to the maximum value of hot metal and slag at the end of tapping, and the average capacity It requires significantly greater equipment capacity.
- An object of the present invention is to prevent the discharge rate from a tap hole from increasing exponentially with time, greatly increase the evening time from one tap hole,
- An object of the present invention is to provide a blast furnace tapping method capable of controlling the discharge speed of the blast furnace to a constant value as much as possible.
- Another object of the present invention is to significantly increase tapping time and reduce tapping frequency. And reduce the work involved in tapping.
- Another object of the present invention is to reduce the fluctuation of hot metal quality by keeping the tapping speed constant and extending the evening time, and to reduce the cost of hot metal pretreatment in the next step.
- an object of the present invention is to make the level of storage of iron and slag at the bottom of the blast furnace constant and to contribute to the stable operation of the blast furnace.
- a conduction pipe is connected to the outside of the tap hole of the blast furnace, and a conduction pipe is arranged. Electromagnetic energy is supplied to the molten iron flowing through the conduction pipe by an electromagnetic energy supply member arranged on the outer periphery of the conduction pipe, and electromagnetic energy is applied to the hot metal in the conduction pipe.
- a method for tapping a blast furnace characterized in that one of the hot metal and the slag flowing through the pipe is positioned at the center of the pipe and the other is positioned at the periphery thereof, thereby separating the flow of the hot metal and the slag in the conduit. .
- At least two electromagnetic energy feeders for controlling the thickness of the hot metal layer are arranged on the outer circumference of the conduit, and the discharge speed of the hot metal and Z or slag is controlled by controlling each individually.
- the speed information obtained by the detection system for the tapping speed and the slag speed is fed back to the electromagnetic energy supplier to control the discharge speed of the hot metal and Z or the slag. Detection is performed by measuring the tapping speed with a flow rate measuring device provided on the tapping gutter on the floor or the weighing device of a towing car, while measuring the tapping speed with a flow rate measuring device provided on the tapping gutter. The obtained speed information is fed back to the electromagnetic energy supplier to control the discharge speed of hot metal and Z or slag.
- electromagnetic energy is applied so as to impart a swirling motion to the hot metal slag in a direction transverse to the flow direction of the hot metal slag, the hot metal is positioned on the outer peripheral side of the flow cross section by centrifugal force, and the hot metal is positioned at the center side. It is good to have evening dinner.
- the swirling speed of the swirling hot metal is controlled, the thickness of the hot metal located on the outer peripheral side of the flow is adjusted according to the magnitude of the centrifugal force due to the swirling motion, and the discharge speed ratio between the hot metal and the slag is controlled. Can be.
- a method of tapping a blast furnace has been proposed in which electromagnetic energy is applied so as to apply a magnetic pressure due to electromagnetic repulsion to the hot metal flowing through the conduit so that the hot metal is collected at the center of the conduit and the slag is located at the periphery thereof.
- electromagnetic energy is applied so as to apply a magnetic pressure due to electromagnetic repulsion to the hot metal flowing through the conduit so that the hot metal is collected at the center of the conduit and the slag is located at the periphery thereof.
- the slag is deflected to the outer periphery of the flow to cool the conduit from the outside, and a solidified layer of the slag is adhered to the inner surface of the conduit to form a self-lining layer. It is also possible to control the flow rate of hot metal and slag by adjusting the amount of heat and changing the thickness of the solidified layer.
- the hot metal and the slag can be separated at this stage, and the flow velocity difference between the hot metal flow and the slag flow is reduced. It is preferable to generate them and separate them by the difference in inertial force.
- FIG. 1 is a longitudinal sectional view of a blast furnace bottom according to a conventional example.
- FIG. 2 is a vertical cross-sectional view showing a tap hole opening state according to a conventional example.
- FIG. 3 is a longitudinal sectional view showing a situation of evening tapping from a taphole according to a conventional example.
- FIG. 4 is a vertical cross-sectional view showing a closed state of a tap hole according to a conventional example.
- FIG. 5 is a diagram showing the relationship between the evening speed and the ironmaking slag speed.
- Fig. 6 is a graph showing the relationship between the tapping hole wear rate and the molten iron slag flow rate in the taphole.
- FIG. 7 is an explanatory diagram of an electromagnetic brake according to a conventional example.
- FIG. 8 is a longitudinal sectional view showing an apparatus according to an embodiment of the present invention.
- FIG. 9 is a sectional view taken along the line AA of FIG.
- FIG. 10 is a longitudinal sectional view showing an apparatus according to another embodiment of the present invention.
- FIG. 11 is a flowchart showing a control system of the present invention.
- FIG. 12 is a graph showing inferences of the rate of wear of the tap hole and the diameter of the tap hole according to the present invention.
- FIG. 13 is a longitudinal sectional view showing an apparatus at the bottom of a blast furnace according to an embodiment of the present invention.
- FIG. 14 is an explanatory diagram showing a situation in which the hot metal undergoes a magnetic pressure to reduce its diameter.
- FIG. 15 is a cross-sectional view taken along line AA of FIG.
- FIG. 16 is a flowchart showing the control system of the present invention. ⁇
- FIG. 17 is a vertical cross-sectional view showing a state in which the conduit tube according to the present invention is closed by a powder gun.
- FIG. 18 is a partial longitudinal sectional view showing the structure of a conduit according to another embodiment of the present invention.
- FIG. 19 is a longitudinal sectional view showing another embodiment according to the present invention.
- FIG. 20 is a diagram illustrating the principle of the present invention.
- FIG. 21 is a diagram illustrating the principle of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- Hot metal 16 and slag 18 accumulate in the blast furnace bottom 10.
- Hot metal 16 has a higher specific gravity than slag 18, so that slag 18 is separated from hot metal 16.
- a tap hole 12 is opened to open the hot metal in the furnace. 16.
- the slag 18 is discharged from the tap hole 12 to the tap gutter 20.
- the tapping machine 22 When tapping by tapping the tap hole 12 provided in the blast furnace bottom 10, the tapping machine 22 is moved in front of the tap hole 12 as shown in FIG. Drill 2 4 (or a metal rod) attached to 2 2 is driven into tap hole 12 to open the tap hole. After the opening, as shown in FIG. 3, the hot metal 16 and the slag 18 stored in the blast furnace bottom 10 are discharged through the tap hole 12 onto the tapping gutter 20. The tapping operation was performed in this manner.
- a mad gun 28 is attached to tap hole 12 and mad 26 in mad gun 28 is inserted into tap hole 12. It was blocked by pushing it in and stopped evening evening.
- the mat 26 filled in the tap hole 12 in this way is dried and solidified by heat from around the tap hole 12.
- the solidified mat 26 was drilled again by the drill 22 and the tapping was repeated.
- the tap hole 1 2 The diameter of the hole formed is determined by the outer diameter of the drill 24 (or metal rod).
- the discharge speed of the hot metal and slag from the tap hole 12 is within the molten iron slag formation rate due to the reduction and melting of iron ore. Therefore, at the blast furnace bottom 10, the molten metal level rises for both the hot metal 16 and the slag 18.
- the mat 26 forming the taphole 12 is worn out by the discharge of hot metal and slag, so that the diameter (cross-sectional area) of the taphole gradually increases.
- the pressure loss of the hot metal passing through the tap hole 12 also decreases, and the amount of discharge gradually increases. For this reason During the blasting process, the discharge speed of the molten iron and the molten slag exceeds the production speed of the molten slag, and the molten metal level of the molten metal 16 and the molten metal 18 in the blast furnace bottom 10 is lowered.
- the tap hole 12 is filled with the sand 26 by the mud gun 28, the tap hole 12 is closed, tapping is finished, and the other tap hole is inserted into the tap hole 2 Open the hole using 2 and continue tapping from the tap hole. In this way, tapping was performed alternately from a pair of tap holes.
- a conducting tube is attached to the outside of the furnace of the tap hole, an electromagnetic energy supply is provided around the outer periphery of the conducting tube, and electromagnetic energy is supplied from the electromagnetic energy supply to the molten iron slag flowing in the conducting tube. To adjust the flow of hot metal and slag.
- the application of electromagnetic energy in the present invention has two modes.
- First An aspect is to apply a rotating magnetic field traversing the flow of hot metal from outside the conduit to the hot metal in the conduit.
- an electromagnetic energy supplier 100 that generates a rotating magnetic field is provided on the outer periphery of the conduction pipe 30, and the hot metal 16 has a flow path as shown by the arrow 102.
- the hot metal is biased to its outer periphery, and the slag 18 collects at the center of the flow.
- a rotating magnetic field is applied to a conductive material (hot metal)
- the conductive material makes a swirling motion in the conduit according to the same principle as the induction motor due to the induced voltage.
- the flow rate of the hot metal can be adjusted depending on the strength.
- the hot metal with a high specific gravity gathers at the outer periphery, and the slag with a low specific gravity gathers at the center.
- tapping speed can be controlled by imparting rotational movement transverse to the direction of flow. Therefore, the discharge speed of the hot metal and the slag can be controlled to a desired value without being affected by the wear of the taphole.
- a high-frequency current is applied to an electromagnetic energy supplier disposed on the outer periphery of the conduction pipe to apply a magnetic pressure due to electromagnetic repulsion to hot metal flowing in the conduction pipe, Is to be contracted. Due to such a contraction, the hot metal flowing in the passage pipe is collected at the center and the slag is displaced around the center. Then, the cross-sectional area of the flow path is adjusted according to the magnitude of the magnetic pressure, and the discharge speed of the hot metal and slag is controlled. Therefore, it is possible to freely control the tapping slag speed without being affected by the abrasion of the taphole.
- FIG. 1 A preferred example of applying a magnetic pressure by electromagnetic repulsion is shown in FIG.
- a magnetic energy supply body 104 is arranged along the longitudinal direction on the outer periphery of the conductive tube 30 and a high-frequency current is generated by applying a single-phase high-frequency current.
- the magnetic flux 106 flows in the outer periphery of the hot metal and generates an eddy current on the outer peripheral surface of the hot metal. Therefore, the outer periphery of the hot metal flowing through the conduit
- the magnetic pressure 108 acts in the direction of the center along the magnetic flux, causing magnetic levitation and forming a contraction portion 110.
- slag 18 that does not receive electromagnetic repulsion gathers around its outer periphery, and the hot metal 16 and the slag 18 are separated.
- a conduction pipe 30 is attached to the outside of the tap hole 12 provided in the blast furnace bottom 10 by connecting it to the outside of the furnace.
- the means for mounting the conduit 30 is not specified, but for example, means similar to mounting a mud gun may be used.
- At least two (four in the drawing) electromagnetic energy supply members 32 are arranged in the longitudinal direction on the outer periphery of the conduit 30 so as to surround the body.
- FIG. 9 shows a case where swirling motion is applied to the hot metal 16 flowing in the flow passage 34 of the conduit tube 30.
- the hot metal 16 swirls in the flow passage 34 and the centrifugal force causes the hot metal 16 to flow. Since it is located on the outer diameter side of the inside, the slag 18 is necessarily located on the center side, and is separated into two liquids, the hot metal and the slag.
- a refractory 36 is lined on the inner surface of the conduit 30 and a cooling passage 38 is buried in the conduit 30. Cooling medium such as is used to cool.
- the wear of the mat 26 forming the flow path of the tap hole 12 is mainly caused by the slag 18.
- the hot metal 18 is located on the outer diameter side in the flow path 34 and is cooled by a cooling medium passing through the cooling path 38, so that the inner surface of the conduction pipe 30 is lined.
- a cooling medium passing through the cooling path 38 so that the inner surface of the conduction pipe 30 is lined.
- Fig. 10 five electromagnetic energy suppliers 32a to 32e are arranged on the outer circumference of the conduit 30 in the longitudinal direction. Of these, the electromagnetic energy supplier 32 turns the hot metal 16
- the discharge speed of the hot metal 16 is controlled by increasing the speed and reducing the thickness of the hot metal 16, and the rotating speed of the hot metal 16 is reduced in the electromagnetic energy supply 3 2 d to increase the thickness of the hot metal 16.
- the discharge speed of the slag 18 is suppressed by reducing the cross section of the flow path of the slag 18 which forms the central flow by increasing the thickness of the slag 18.
- the control device 68 controls the electromagnetic energy applied to the electromagnetic energy supply body 32 b disposed on the outer periphery of the conduction pipe 30 to discharge the hot metal or slag flowing along the inner surface side of the portion. Control.
- the control device 70 controls the electromagnetic energy applied to the electromagnetic energy supplier 32 d arranged on the outer periphery of the conduction pipe 30 so that the hot metal or molten metal flowing along the inner surface side of the portion is controlled. Controls the rate of slag discharge.
- the tapping speed can be measured by a hot metal flow velocity measuring device 56 arranged above the hot metal gutter 52 or a weight measuring device 60 of a topped car 58.
- Slag speed The degree can be measured by a slag flow rate measuring device 64 disposed above the slag gutter 62.
- the tapping speed obtained from the hot metal flow rate measuring device 56 or the weight measuring device 60 and the tapping speed obtained from the slag flow rate measuring device 64 are sent to the control unit 66, and the target tapping speed and tapping The difference from the slag speed is calculated. Then, a control signal required for the control devices 68 and 70 is output from the control device 66. Based on this, the electromagnetic energy applied to the electromagnetic energy suppliers 32b and 32d is controlled to obtain the desired tapping speed.
- the hot metal which has a small effect on the wear of the refractory is located on the inner surface side of the conduit 30. For this reason, the conduit 30 is not subject to wear like the conventional mud in the tap hole. Therefore, since the flow path 34 of the conduction pipe 30 maintains a constant flow path diameter, the tapping speed can be controlled to be constant.
- the diameter of the tap hole inevitably increases with time due to wear of the mat, but in the present invention, since the discharge speed is kept constant by the conduit, As the hole diameter increases, the flow velocity in the tap hole decreases. For this reason, the wear rate of the mud that forms the tap hole becomes even smaller.
- a conduction pipe 30 is attached by connecting to the outside of the tap hole 12 provided in the blast furnace bottom 10.
- the mounting means of the conduit tube 30 is not specified, but for example, a mechanical means similar to mounting a mat gun may be used so as to be removable.
- a plurality (four in the drawing) of electromagnetic energy supply bodies 32 surround the body of the conduction pipe 30 in the longitudinal direction on the outer circumference of the conduction pipe 30. It is arranged as follows.
- the electromagnetic energy supply When electromagnetic energy is applied from 32, the hot metal 16 receives a magnetic pressure 36 due to an electromagnetic reaction as shown in FIG. Then, as shown in FIG. 15, the hot metal 16 gathers at the center of the passage 34 formed in the conduit 30. As a result, the slag 18 is pushed to the outer diameter side in the flow path 34, and is separated into two liquid flows of the hot metal 16 at the center of the flow path 34 and the slag 18 on the outer diameter side. You.
- the slag 18 solidifies and adheres to the inner wall of the flow path 34 provided inside the conduction pipe 30. To form a solidified layer. Since the slag has a low thermal conductivity, the solidified layer 40 becomes a stable heat-insulating layer and serves as a cell flying of the conduit 30.
- the flow rate of the cooling medium is controlled by a control valve 84 so that the cooling medium flows from the inner wall of the conduction pipe 30. Adjust heat removal. As a result, the inner wall of the conduit 30 is condensed. The thickness of the solidified layer 40 that solidifies and adheres is controlled, and the cross-sectional area of the flow path 34 of the conduit tube 30 can be adjusted.
- the hot metal 16 at the center of the flow path 34 formed in the conduction pipe 30 receives electromagnetic energy from the electromagnetic energy supplier 32 and receives electric pressure due to electromagnetic repulsion.
- the intensity of the electromagnetic pressure is adjusted by controlling the supply amount of the electromagnetic energy by the control device 68, whereby the cross-sectional area of the flow path of the hot metal 16 is controlled.
- the electromagnetic energy supplier 32 disposed on the outer periphery of the conduit 30 controls the flow cross section of the hot metal 16, and the solidification of the slag formed on the inner wall surface by cooling the conduit 30.
- the flow cross-sectional area of the flow path 34 By changing the flow cross-sectional area of the flow path 34 by adjusting the thickness of the layer 40, it is possible to control the discharge speeds of the hot metal 16 and the slag 18 independently.
- a control device that controls the tapping speed obtained from the hot metal flow rate measuring device 56 of the hot metal gutter 52 or the weight measuring device 60 of the tobead car 58 and the slag speed obtained from the hot metal flow speed measuring device 64 of the hot metal gutter 62. 6 and the controller 66 calculates the difference between the target tapping speed and the target tapping speed. And the control device based on the difference with the target
- the supply amount of the magnetic energy applied from the electromagnetic energy supply unit 32 is controlled, or the flow rate of the cooling medium and the supply amount of the magnetic energy are simultaneously controlled. You can also control it.
- the supply amount of the cooling medium to the cooling passage 38 of the conduit tube 30 and / or the amount of electromagnetic energy applied to the electromagnetic energy supplier 32 solidification formed on the inner surface of the conduit tube 30 Thickness adjustment of layer 40 and flow of hot metal 16 in the center of conduit 30 The desired evening speed can be obtained by combining with road section adjustment.
- the tap hole 12 is opened by a drilling machine in the same manner as in the related art.
- a conduction pipe 30 is attached to the tap hole 12, and as described above, electromagnetic energy is applied from the electromagnetic energy supply unit 32 to remove the iron slag. Separation into a liquid flow and control to keep the tapping speed constant while forcibly cooling the conduit 32.
- tapping is stopped, and a mat gun 86 is mounted on the non-furnace side of the conduit 30 as shown in Fig. 17. Then, the furnace is filled with the mat through the conduit tube 30, thereby closing the tap hole 12. After that, another tap hole is opened by a drilling machine, and evening tapping is continued.
- a conduction pipe 30 is attached by connecting to the outside of the tap hole 12 provided in the blast furnace bottom 10 in the blast furnace.
- a plurality of electromagnetic energy supply bodies 32 are attached to the outer circumference of the conduit 30 in the longitudinal direction.
- the molten iron is separated into two liquid flows, ie, hot metal 16 at the center and slag 18 outside the hot metal.
- an electromagnetic energy supply is also provided at the discharge end of the conduit 30.
- hot metal discharge ⁇ 90 and slag discharge port 92 will be provided.
- the electromagnetic energy supplied from the electromagnetic energy supplier 32 f is controlled so that the hot metal 16 separated from the central part of the conduit 30 reaching the discharge end has a large cross section. While the molten metal 16 is discharged from the molten metal discharge ⁇ 90, the molten metal 18 deviating to the periphery of the molten metal 16 is discharged from the molten metal discharge port 92, and the molten metal can be separated and discharged.
- Fig. 19 shows that the flow velocity of hot metal 16 is increased near the outlet of the conduit 30 and the hot metal 16 and the slag 18 are simultaneously ejected from the same outlet, and after exiting the outlet. This is an example in which molten iron 16 and slag 18 are separated by a speed difference.
- the electromagnetic brake 88 shown in FIG. 7 does not directly suppress the discharge of molten iron slag, but the electromagnetic pressure supplied by the electromagnetic energy supplier 32 narrows the cross-sectional area of the molten iron flow path to reduce the discharge pressure loss. And increase the emission rate. Therefore, the required electromagnetic energy is significantly smaller than that of the electromagnetic brake, and the discharge speed of hot metal and slag can be controlled independently.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95903979A EP0688875B1 (en) | 1993-12-28 | 1994-12-27 | Tapping method of blast furnace |
| US08/495,466 US5616166A (en) | 1993-12-28 | 1994-12-27 | Tapping method for blast furnace |
| DE69419598T DE69419598T2 (de) | 1993-12-28 | 1994-12-27 | Abstichverfahren für hochofen |
| KR1019950703640A KR0166419B1 (ko) | 1993-12-28 | 1994-12-27 | 고로의 탭핑방법 |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5/336079 | 1993-12-28 | ||
| JP5336079A JPH07188719A (ja) | 1993-12-28 | 1993-12-28 | 高炉の出銑滓分離方法 |
| JP5/336078 | 1993-12-28 | ||
| JP5/336077 | 1993-12-28 | ||
| JP5336077A JPH07188717A (ja) | 1993-12-28 | 1993-12-28 | 高炉の出銑滓速度制御方法 |
| JP5336078A JPH07188718A (ja) | 1993-12-28 | 1993-12-28 | 高炉出銑孔からの出銑滓速度制御方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995018237A1 true WO1995018237A1 (en) | 1995-07-06 |
Family
ID=27340762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1994/002240 Ceased WO1995018237A1 (en) | 1993-12-28 | 1994-12-27 | Tapping method of blast furnace |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5616166A (ja) |
| EP (1) | EP0688875B1 (ja) |
| KR (1) | KR0166419B1 (ja) |
| CN (1) | CN1036016C (ja) |
| DE (1) | DE69419598T2 (ja) |
| WO (1) | WO1995018237A1 (ja) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005038172B4 (de) * | 2005-08-12 | 2013-01-03 | Sms Siemag Aktiengesellschaft | Abstichkanal für einen metallurgischen Ofen |
| US8343416B2 (en) * | 2008-08-07 | 2013-01-01 | Tmt Tapping-Measuring-Technology Gmbh | Methods and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically conductive liquids and melts |
| DE102009035241B4 (de) | 2008-08-07 | 2014-06-12 | Tmt Tapping-Measuring-Technology Gmbh | Verfahren und Vorrichtungen zur Regelung der Strömungsgeschwindigkeit und zum Abbremsen von nichtferromagnetischen, elektrisch leitfähigen Flüssigkeiten und Schmelzen |
| DE102008036791A1 (de) * | 2008-08-07 | 2010-02-11 | Tmt Tapping-Measuring-Technology Gmbh | Verfahren und Schmelzekanäle zur Unterbrechung und Wiederherstellung des Schmelzestroms von Eisen- und Metallschmelzen, insbesondere in Stichlochkanälen von Hochöfen und Abflusskanälen von Schmelzöfen |
| KR101032554B1 (ko) * | 2008-12-08 | 2011-05-06 | 주식회사 포스코 | 용선검출센서를 이용한 용선의 배출속도와 저선레벨 측정시스템 및 측정방법 |
| US12540363B2 (en) | 2020-04-30 | 2026-02-03 | Jfe Steel Corporation | Method for detecting fluctuation of solidified layer and method for operating blast furnace |
| CN114111332B (zh) * | 2021-11-26 | 2023-11-21 | 攀钢集团攀枝花钢钒有限公司 | 一种提高冶炼炉排料效率的方法 |
| CN116751903A (zh) * | 2023-04-28 | 2023-09-15 | 上海大学 | 一种电磁约束高炉出铁装置 |
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| JPS5599580A (en) * | 1979-01-22 | 1980-07-29 | Shinko Electric Co Ltd | Controller for pouring molten material by pouring machine with electromagnetic pump |
| JPS5643274B2 (ja) * | 1978-03-31 | 1981-10-12 | ||
| JPS586385B2 (ja) * | 1978-01-07 | 1983-02-04 | 株式会社神戸製鋼所 | 電磁樋 |
| JPH0625372B2 (ja) * | 1990-02-26 | 1994-04-06 | 川崎製鉄株式会社 | 高炉の出銑方法および出銑装置 |
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| SE365731B (ja) * | 1970-01-20 | 1974-04-01 | Asea Ab | |
| LU76461A1 (ja) * | 1975-12-24 | 1977-06-15 | ||
| JPS5643274A (en) * | 1979-09-13 | 1981-04-21 | Otsuka Pharmaceut Co Ltd | Trihalopropane derivative |
| JPS5741878A (en) * | 1980-08-25 | 1982-03-09 | Shinagawa Refract Co Ltd | Method for protecting refractories from molten fluid metal |
| JPS5741879A (en) * | 1980-08-25 | 1982-03-09 | Shinagawa Refract Co Ltd | Method for protecting refractories against slag coexisting with molten metal |
| JPS6044370B2 (ja) * | 1981-03-16 | 1985-10-03 | 住友金属工業株式会社 | 精錬容器からの滓出防止装置 |
| JPS586385A (ja) * | 1981-06-30 | 1983-01-13 | シャープ株式会社 | フアン式冷凍冷蔵庫 |
| JPS5839718A (ja) * | 1981-09-03 | 1983-03-08 | Kawasaki Steel Corp | 溶湯、溶滓の分離出湯装置 |
| SE454208B (sv) * | 1986-02-24 | 1988-04-11 | Asea Ab | Sett for avskiljning av inneslutningar i metallsmeltor samt anordning for genomforande av settet |
| JPH0625372A (ja) * | 1992-07-07 | 1994-02-01 | Hitachi Chem Co Ltd | ポリイミドの製造方法 |
| JPH06271911A (ja) * | 1993-03-22 | 1994-09-27 | Kawasaki Steel Corp | 高炉出銑樋耐火物の冷却方法 |
-
1994
- 1994-12-27 KR KR1019950703640A patent/KR0166419B1/ko not_active Expired - Fee Related
- 1994-12-27 CN CN94191631A patent/CN1036016C/zh not_active Expired - Fee Related
- 1994-12-27 EP EP95903979A patent/EP0688875B1/en not_active Expired - Lifetime
- 1994-12-27 US US08/495,466 patent/US5616166A/en not_active Expired - Fee Related
- 1994-12-27 DE DE69419598T patent/DE69419598T2/de not_active Expired - Fee Related
- 1994-12-27 WO PCT/JP1994/002240 patent/WO1995018237A1/ja not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586385B2 (ja) * | 1978-01-07 | 1983-02-04 | 株式会社神戸製鋼所 | 電磁樋 |
| JPS5643274B2 (ja) * | 1978-03-31 | 1981-10-12 | ||
| JPS5599580A (en) * | 1979-01-22 | 1980-07-29 | Shinko Electric Co Ltd | Controller for pouring molten material by pouring machine with electromagnetic pump |
| JPH0625372B2 (ja) * | 1990-02-26 | 1994-04-06 | 川崎製鉄株式会社 | 高炉の出銑方法および出銑装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036016C (zh) | 1997-10-01 |
| KR960701223A (ko) | 1996-02-24 |
| DE69419598D1 (de) | 1999-08-26 |
| US5616166A (en) | 1997-04-01 |
| EP0688875A4 (en) | 1996-08-07 |
| DE69419598T2 (de) | 2000-01-13 |
| KR0166419B1 (ko) | 1999-01-15 |
| EP0688875B1 (en) | 1999-07-21 |
| EP0688875A1 (en) | 1995-12-27 |
| CN1120354A (zh) | 1996-04-10 |
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