WO2015020261A1 - Device for preventing slag outflow and high pressure gas injection lance used therein - Google Patents
Device for preventing slag outflow and high pressure gas injection lance used therein Download PDFInfo
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- WO2015020261A1 WO2015020261A1 PCT/KR2013/008424 KR2013008424W WO2015020261A1 WO 2015020261 A1 WO2015020261 A1 WO 2015020261A1 KR 2013008424 W KR2013008424 W KR 2013008424W WO 2015020261 A1 WO2015020261 A1 WO 2015020261A1
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- WIPO (PCT)
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- pressure gas
- high pressure
- wall
- lance
- injection lance
- Prior art date
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
-
- 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
- C21C5/4653—Tapholes; Opening or plugging thereof
Definitions
- the present invention relates to a slag outflow prevention device and a high-pressure gas injection lance used in the present invention, in particular by injecting a high-pressure inert gas to the vortex point of the upper exit port to push the slag from the exit port more easily and efficiently
- a device for preventing slag outflow and a high pressure gas injection lance used therein is a device for preventing slag outflow and a high pressure gas injection lance used therein.
- the molten iron manufactured in the blast furnace is transferred to the converter to perform refining operations such as oxygen scavenging and other alloying treatments, and then to the molten steel with the steel ladle seated on the steel truck.
- refining operations such as oxygen scavenging and other alloying treatments
- the molten steel (from the converter 100 to the steel ladle 110) as shown in FIG. 1. It is essential to separate the slag (S) from the molten steel (M) generated in the refining process during the step of tapping M) existing in the upper surface of the molten steel (M) due to the difference in specific gravity.
- the component of the molten steel (M) that has undergone the refining process is slag (S).
- the slag S having a specific gravity smaller than that of the molten steel M, which is generated during the refining operation of the molten steel M, is not to be mixed in the water ladle 110 so as not to be changed by the molten steel M.
- the success of an effective tapping operation depends on how much the amount of slag (S) incorporated into the tapping ladle can be minimized.
- the slag dart 120 having a funnel-shaped head filled with the inside of the head and a sleeve extending to the lower part of the head and inserted into the tap hole 102 is introduced into the tap hole 102 using a dart injector (not shown). By doing so, the slag S has been prevented from flowing out.
- the conventional slag dart 120 is required to have a specific gravity of 3 to 6, which is an intermediate range of slag having a specific gravity of about 2.3 and molten steel having a specific gravity of about 7.8, but the density of the slag dart 120 is not appropriate.
- the slag dart 120 prevents the molten steel M from completely tapping out too soon or too late, or the slag is mixed into the molten steel and spilled.
- Patent Document 1 Registered Patent No. 882819 (announced on October 13, 2008), Name: slag dart
- Patent Document 2 Registered Patent No. 105834 (August 24, 2011), Name: Slag dart using recovered and recycled magnesia chromium-based refractory material and method for producing same
- the present invention has been made to solve the above-described problem, the high pressure inert gas is injected into the vortex point of the tapping outlet to push the slag from the tapping outlet slag outflow to more easily and efficiently prevent slag outflow It is an object to provide a prevention device and a high pressure gas injection lance used therein.
- High pressure gas injection lance for preventing slag outflow is composed of a two-layered cylindrical body of the inner wall and the outer wall of which the tip is closed, the space defined by the inner wall forms a high pressure gas path And a pipe structure in which a cylindrical partition wall having a tip spaced apart from a closed tip of the inner wall and the outer wall is formed in a space between the inner wall and the outer wall to form a circulation path of cooling water; It comprises a nozzle bundle for injecting the high pressure gas downward and the adapter for connecting the injection pipe structure and the nozzle bundle so that the ejection direction of the high pressure gas is converted.
- At least the inner wall outer circumferential surface or the partition wall outer circumferential surface is formed with a spiral guide protrusion.
- the nozzle assembly is made of a hollow nozzle body and the needle body is inserted into the nozzle body and comprises a needle valve for injecting high pressure gas at high speed through the tip of the nozzle body, the nozzle body is a diffusion nozzle with the needle valve It is characterized by forming.
- elevating means for elevating the needle valve with respect to the nozzle body, wherein the needle valve is formed of a hollow cylindrical body having a through end penetrating through a wall having a closed end portion having an elongated shape having a narrow cross section at the center thereof. It is possible to adjust the injection angle of the high-pressure gas by lifting the needle valve in the nozzle body by means.
- the adapter has a hollow fitting member, one side of which is in communication with the pipe structure, and a female screw, which is screwed with a male screw formed in the nozzle body, on one side thereof, and on one side thereof, a connection portion communicating with the other side of the fitting member is formed.
- a female screw which is screwed with a male screw formed in the nozzle body, on one side thereof, and on one side thereof, a connection portion communicating with the other side of the fitting member is formed.
- the slag outflow prevention device includes an injection lance of one of the features described above; A high pressure gas injector for injecting high pressure gas through the injection lance; Lance inclination angle adjusting unit for adjusting the inclination angle of the injection lance; A lance forward and backward driving unit which drives the injection lance back and forth; And a control unit configured to collectively control the cooling water circulation unit for circulating the cooling water into the injection lance and the high pressure gas injection unit, the lance inclination angle adjusting unit, the lance forward and backward driving unit, and the cooling water circulation unit.
- the communication unit for receiving the transmission information related to the tapping from the converter control equipment via a wired / wireless communication network further comprising, the control unit based on the converter information received through the communication unit for the high-pressure gas distribution It characterized in that the control unit, the lance inclination angle adjusting unit, the lance forward and backward driving unit and the cooling water circulation.
- the slag outflow prevention device of the present invention by injecting a high pressure inert gas to the vortex point of the upper exit port to push the slag from the exit port more easily and efficiently to prevent slag outflow There is a number.
- 1 is a view for explaining the problem of the conventional slag leakage prevention device.
- Figure 2 is an overall system configuration for explaining the concept of the slag leakage prevention apparatus of the present invention.
- Figure 3 is an electrical block diagram of the slag leakage prevention apparatus of the present invention.
- FIG. 4A and 4B are longitudinal cross-sectional views of the high-pressure gas injection lance in Fig. 2, respectively, and a cross-sectional view taken along line A-A in Fig. 4A;
- Figure 5 is an exploded cross-sectional view showing the structure of the high pressure gas injection lance tip in the slag outflow prevention device of the present invention.
- Figure 6 is a cross-sectional view showing the structure of the high pressure gas injection lance tip in the slag outflow prevention device of the present invention.
- FIG. 7A and 7B are cross-sectional views of the needle valves of the nozzle bundles being raised or lowered in FIG. 6, respectively.
- Figure 8 is a flow chart for explaining the operation of the slag leakage prevention apparatus of the present invention.
- Figures 9a to 9f are respectively showing the state of the high-pressure gas injection lance and converter according to the step-by-step operation process of the slag outflow prevention device of the present invention.
- FIG. 2 is an overall system configuration diagram for explaining the concept of the slag leakage prevention apparatus of the present invention
- Figure 3 is an electrical block configuration diagram of the slag leakage prevention apparatus of the present invention.
- the slag outflow prevention device of the present invention is a high-pressure gas injection lance (hereinafter simply referred to as 'injection lance') 150 through the inlet of the converter during tilting of the converter converter 100
- 'injection lance' high-pressure gas injection lance
- the slag (S) flows out through the tap hole 102 by pushing the slag (S) to the outer shell of the converter tap hole 102 by injecting a high pressure gas to the vortex generation point of the converter tap hole 102 in the state in which the It is preventing it from becoming.
- the slag outflow prevention device of the present invention is a lance inclination angle adjustment unit 210 for adjusting the inclination angle of the injection lance 150 and the injection lance 150, before and after the lance for advancing or retracting the injection lance 150 with respect to the converter inlet.
- High pressure gas injection unit 230 for injecting high pressure gas through the jin drive unit 220, injection lance 150, cooling water circulating unit for circulating the cooling water for cooling the injection lance 150 ( 240), by communicating with a converter control facility (not shown) by wire / wireless communication network, various types of information (hereinafter referred to as 'transformer information') in accordance with the departure from the converter control facility; On the basis of the communication unit 250 and the converter information receiving the information in real time to properly control the lance inclination angle adjusting unit 210, lance forward and backward driving unit 220, high-pressure gas injection unit 230 and the coolant circulation unit 240 Catch control unit 200 And it may be made.
- the spray lance 150 may be installed around the converter 100 of the workplace in which the converter 100 is installed, where reference numeral 130 denotes a fixed support installed on the ceiling of the workplace, and 134 denotes a spray lance 150.
- reference numeral 130 denotes a fixed support installed on the ceiling of the workplace
- 134 denotes a spray lance 150.
- the rear end of the injection lance support 134 (hereinafter, the forward direction is defined as forward) may be hinged up and down to the H-beam 136 vertically extending downward from the fixed support 130. have.
- the tip of the injection lance support 134 may be elevated by the hoist wire 132 that is wound or unwound by the hoist motor 133 installed on the fixed support 130.
- Reference numeral 138 denotes an injection lance carrier moving forward and backward at the injection lance support 132 while supporting the injection lance 150
- reference numeral 139 denotes a power generating means for advancing and moving the injection lance carrier 138, for example. Represents a motor.
- the lance inclination angle adjusting unit 210 may be implemented as an electric motor and its accompanying mechanism for reciprocating the piston of the hoist motor 133 and the hoist wire 132 or the hydraulic or pneumatic cylinder as described above, If necessary, a sensor for detecting an inclination angle may be further provided.
- the lance forward and backward driving unit 220 may be implemented as an electric motor 139 for advancing and forwarding the injection lance carrier 138 or a compression pump (motor) for compressing hydraulic or pneumatic pressure and a solenoid valve or linear motor.
- a sensor for detecting a forward or backward position or distance may be further provided.
- the high pressure gas injection unit 230 may be implemented by, for example, a compression pump (motor) and a solenoid valve that compresses an inert gas such as argon (Ar) or nitrogen.
- a compression pump motor
- a solenoid valve that compresses an inert gas such as argon (Ar) or nitrogen.
- Cooling water circulation unit 240 may be implemented as a circulation pump (motor).
- the communication unit 250 may be implemented as a serial communication interface such as RS-232 or RS-485 or a local area network such as Ethernet.
- the controller 200 may be implemented in a hardware or software manner.
- FIG. 4A and 4B are longitudinal cross-sectional views of the high-pressure gas injection lance in FIG. 2, respectively, and a cross-sectional view taken along line A-A in FIG. 4A.
- the injection lance 150 is applied to the slag outflow prevention device of the present invention, the inner and outer two layers, that is, the inner wall 154, the high pressure gas path 155a is formed in the center and the tip is closed.
- a pipe structure having an outer wall 151, a nozzle bundle 158 for injecting high pressure gas downward, and an adapter 156 for connecting the injection pipe structure and the nozzle bundle 158 so that the ejection direction of the high pressure gas is changed, ( 157).
- the cooling water for cooling the inside of the pipe structure by the separation gap is circulated, that is, the cooling water introduced into the cooling water inflow path 155b formed, for example, between the inner wall 154 and the partition wall 153, through the separation gap.
- the coolant is circulated by the coolant outlet path 155c formed of a space between the 153 and the outer wall 151.
- the space outside the partition 153 may be a coolant inflow path and the inner space may be a coolant outflow path.
- spiral guide protrusions 154a and 153a may be additionally provided in the cooling water inflow path 155b and the cooling water outflow path 155c, for example, a triangular cross section. That is, a spiral guide protrusion 154a having a height of approximately 1/2 or more of the shortest distance between the inner wall 154 and the partition wall 13 is formed on the outer circumferential surface of the inner wall 154 of the pipe structure, and also on the outer circumferential surface of the partition wall 153.
- a spiral guide protrusion 153a having a height of about 1/2 or more of the shortest distance between the partition wall 153 and the outer wall 151 is formed. Even if the cooling water introduced by the spiral guide protrusions 154a and 163a is insufficient or the injection lance is inclined, the cooling water may be lowered.
- FIG. 5 is a separated cross-sectional view showing the structure of the high pressure gas injection lance tip in the slag outflow prevention device of the present invention
- Figure 6 is a combined cross-sectional view showing the structure of the high pressure gas injection lance tip in the slag outflow prevention device of the present invention
- 7A and 7B are cross-sectional views of the needles of the nozzle bundles respectively being raised or lowered in FIG. 6.
- reference numeral 156 denotes a fitting member connecting the box structure 157 and the pipe structure as part of the adapter.
- the fitting member 156 is formed with a high pressure gas flow path 156a laterally.
- a horizontal extension portion 156b is formed which is inserted into the high pressure gas path 155a of the pipe structure, and the high pressure gas path 155a of the pipe structure is formed on the outer peripheral surface of the tip of the horizontal extension portion 156b.
- a male screw 156c is screwed to the female screw (not shown) formed on the inner circumferential surface thereof, and is formed on the box structure 157 through a coupling through hole 157a formed at one side of the box structure 157 on the front side.
- the male screw 156e which is screwed with the nut 157f in the inserted state is provided.
- reference numeral 156d denotes a flange that is in contact with the tip of the pipe structure when the fitting member 156 is coupled, and the front surface of the flange 156d serves as an O-ring for preventing leakage of high pressure gas.
- the above annular projection 156f is formed.
- the box structure 157 is formed in a hollow box shape in which the above-described coupling through hole 157a is formed on one side and a communication hole 157b communicating with the nozzle bunch 158 is formed on the lower side.
- the female screw 157c is formed on the circumferential wall of the communication hole 157b.
- a lid 157d is formed on the top of the box structure 157 to allow access to the inside of the box structure 157 when opened, and the cover 157d normally closes the top of the box structure by bolts.
- Reference numeral 157e denotes a sealing packing member
- reference numeral 157g denotes an annular groove formed on the rear wall surface of the box structure 157 to be unevenly coupled to the annular projection 156f of the fitting member 156.
- the nozzle bundle 158 is inserted into the hollow nozzle body 158a and the nozzle body 158a and includes a needle valve 158b for injecting high pressure gas at high speed through the tip of the nozzle body 158a.
- the nozzle body 158a may be implemented in the form of a diffusion nozzle acting in pairs with the needle valve 158b, that is, the middle portion of the nozzle is narrowed and then widened again.
- the free end (tip) portion of the nozzle body 158a has a cross section in which the inside thereof is widened in a fan shape, and 158a1 represents a bottleneck of the nozzle body 158a.
- reference numeral 158a2 denotes a male screw that is formed on the upper outer circumferential surface of the nozzle body 158a and screwed to the female screw 157c formed on the lower surface of the box structure 157.
- the needle valve 158b is formed of a hollow cylindrical body whose tip is closed, and at least one through hole 158b2 penetrates the wall of the cylindrical body in and out of the portion adjacent to the closed tip 158b3.
- the closed tip portion 158b3 of the needle valve 18b has an elongated shape having a narrowest cross section at the center thereof, so that the injection angle of the high pressure gas is widened and narrowed as the needle valve 158b moves up and down the nozzle body 158a. do.
- a female screw 158a3 is formed in place on the inner circumferential surface of the nozzle body 158a, and a male screw 18b5 screwed to the female screw 18a3 is formed at a corresponding portion of the outer circumferential surface of the needle valve 18b. Furthermore, at the rear end of the needle valve 158b, an operation head 18b4 which can be tightened and loosened by a tool such as a hand or a wrench is formed, for example, by turning the operation head 158b4 from side to side, the needle valve 158b can be raised and lowered inside the nozzle body 158a, and as a result, the injection angle of the high pressure gas can be appropriately adjusted. In this case, the cover 157d of the box structure 157 must be opened for access to the operation head 58b4. This structure also makes it easy to replace the nozzle bundle 158 from the spray lance.
- FIG. 7A when the needle valve 158b is retracted into the nozzle body 158a, the gap between the outlet of the nozzle body 158a and the needle valve 158b is widened to inject the high pressure gas.
- FIG. 7B when the needle valve 158b is advanced toward the outside of the nozzle body 158a, the gap between the outlet of the nozzle body 158a and the needle valve 158b is narrowed. The injection angle of the high pressure gas is narrowed.
- FIG. 8 is a flowchart illustrating an operation process of the apparatus for preventing slag leakage of the present invention, which may be performed by the controller 200.
- 9A to 9F are diagrams showing states of the high pressure gas injection lance and the converter according to the stepwise operation of the slag leakage preventing device of the present invention, respectively. As shown in FIG. 9A, before the tapping starts, the converter 100 maintains the upright position and the injection lance 150 also maintains the horizontal and retracted states.
- step S10 a tapping start signal, which is a kind of converter information, is received from the converter control facility through the communication unit 250, and in step S20, the injection lance 150 is transferred to the converter as shown in FIGS. 9B and 9C.
- the tip of the injection lance 150 that is, the nozzle bunch 18, is positioned at the vortex portion of the upper part of the tap hole 102 by tilting toward the entrance.
- step S40 by injecting a high-pressure gas to the vortex portion by pushing the slag (S) suspended in the upper portion of the molten steel (M) from the vortex portion, the slag (S) flows out through the tapping hole Don't let that happen.
- step S40 receives the converter information including the tilt angle and the degree of tapping from the converter control system in real time through the communication unit 250 while properly adjusting the inclination angle of the injection lance 150 as shown in Figure 9d and 9e. High pressure gas is injected.
- the converter control equipment returns the converter to its original position as soon as the tapping is completed, that is, the entrance thereof faces upward.
- step S50 it is determined whether the tapping is completed based on the converter information received from the converter control equipment. As a result of the determination in step S50, when the tapping is not completed, the process returns to step S30, whereas when the tapping is completed, the process proceeds to step S60 and the spraying lance 150 is retracted as shown in FIG. Keep the horizontal state by adjusting the angle of inclination.
- step S70 the injection of the high pressure gas is stopped, and this step S70 may be performed before the above-described step S60.
- the system configuration diagram of FIG. 2 is only a schematic diagram for easily explaining the present invention, and its specific configuration may be modified as much as possible.
- the left and right inclination angle adjusting unit for adjusting the left and right inclination angle of the injection lance may be further provided, which may also be implemented using an electric motor or the like.
- 155b cooling water inlet
- 155c cooling water outlet
- 158 nozzle bundle
- 158a nozzle body
- 210 lance inclination angle adjustment unit
- 220 lance forward and backward drive unit
- 230 high pressure gas injection unit
- 240 cooling water circulation unit
- M molten steel
- S slag
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Abstract
Description
Claims (7)
- 선단이 폐쇄되어 있는 내벽과 외벽의 두 겹의 원통체로 이루어져서 상기 내벽으로 한정된 공간이 고압가스 경로를 형성하며, 상기 내벽과 상기 외벽 사이의 공간에는 선단이 상기 내벽과 상기 외벽의 폐쇄 선단과 이격되어 있는 원통형 격벽이 형성되어 냉각수의 순환로를 형성하는 파이프 구조체;The inner wall and outer wall of which the tip is closed are composed of two layers of cylinders, and the space defined by the inner wall forms a high-pressure gas path, and in the space between the inner wall and the outer wall, the tip is spaced apart from the closed tip of the inner wall and the outer wall. A pipe structure in which a cylindrical partition wall is formed to form a circulation path of the coolant;하방으로 고압가스를 분사하는 노즐 뭉치 및Nozzle bundle for injecting high pressure gas downward and고압가스의 분출 방향이 변환되도록 상기 분사파이프 구조체와 상기 노즐 뭉치를 연결하는 어댑터를 포함하여 이루어진 슬래그 유출 방지용 고압가스 분사 랜스.A high pressure gas injection lance for preventing slag leakage comprising an adapter for connecting the injection pipe structure and the nozzle assembly so that the direction of blowing of the high pressure gas is changed.
- 제 1 항에 있어서,The method of claim 1,적어도 상기 내벽 외주면 또는 상기 격벽 외주면에는 나선형 안내 돌기가 형성된 것을 특징으로 하는 슬래그 유출 방지용 고압가스 분사 랜스.High pressure gas injection lance for preventing slag outflow, characterized in that the spiral guide projection is formed on at least the inner wall outer peripheral surface or the partition outer peripheral surface.
- 제 1 항에 있어서,The method of claim 1,상기 노즐 뭉치는 중공의 노즐 몸체와 상기 노즐 몸체 내부에 삽입되며 상기 노즐 몸체의 선단을 통해 고압가스를 고속으로 분사하는 니들 밸브를 포함하여 이루어지되,The nozzle bundle is made of a hollow nozzle body and the inside of the nozzle body is made of a needle valve for injecting high-pressure gas at high speed through the tip of the nozzle body,상기 노즐 몸체는 상기 니들 밸브와 함께 확산 노즐을 형성하는 것을 특징으로 하는 슬래그 유출 방지용 고압가스 분사 랜스.The nozzle body is a high pressure gas injection lance for preventing slag outflow, characterized in that to form a diffusion nozzle together with the needle valve.
- 제 3 항에 있어서,The method of claim 3, wherein상기 노즐 몸체에 대해 상기 니들 밸브를 승강시키는 승강 수단을 구비하고,An elevating means for elevating the needle valve with respect to the nozzle body;상기 니들 밸브는 가운데 부위가 좁은 단면을 갖는 장구 형상으로 폐쇄된 선단부를 갖되 벽체를 관통하는 관통공이 형성된 중공의 원통체로 이루어져서 상기 승강 수단에 의해 상기 니들 밸브를 상기 노즐 몸체에서 승강시킴으로써 고압가스의 분사 각도를 조정할 수 있도록 된 것을 특징으로 하는 슬래그 유출 방지용 고압가스 분사 랜스.The needle valve is made of a hollow cylindrical body having a closed end portion in the shape of a janggu having a narrow cross section in the center portion and having a through hole penetrating a wall, thereby elevating the needle valve from the nozzle body by the elevating means to inject high pressure gas. High pressure gas injection lance for preventing slag leakage, characterized in that the angle can be adjusted.
- 제 3 항에 있어서,The method of claim 3, wherein상기 어댑터는 일측이 상기 파이프 구조체와 연통되는 중공의 피팅 부재 및The adapter is a hollow fitting member one side is in communication with the pipe structure and하면에 상기 노즐 몸체에 형성된 수나사와 나사결합되는 암나사가 형성되어 있고 일 측면에는 상기 피팅 부재의 타측과 연통되는 연결부가 형성되어 있으며 상부는 개폐 가능한 덮개로 밀봉되어 있는 박스 구조체를 포함하여 이루어진 것을 특징으로 하는 슬래그 유출 방지용 고압 가스 분사 랜스.A female screw threaded to a male screw formed on the nozzle body is formed on a lower surface thereof, and a connecting portion communicating with the other side of the fitting member is formed on one side thereof, and an upper portion includes a box structure sealed by an openable and open lid. High pressure gas injection lance for preventing slag spillage.
- 제 1 항 내지 제 5 항 중 어느 한 항의 분사 랜스;The injection lance of any one of claims 1 to 5;상기 분사 랜스를 통해 고압가스를 분사하는 고압가스 분사부;A high pressure gas injector for injecting high pressure gas through the injection lance;상기 분사 랜스의 경사각을 조정하는 랜스 경사각 조정부;Lance inclination angle adjusting unit for adjusting the inclination angle of the injection lance;상기 분사 랜스를 전후진 구동하는 랜스 전후진 구동부;A lance forward and backward driving unit which drives the injection lance back and forth;상기 분사 랜스 내부로 냉각수를 순환시키는 냉각수 순환부 및A coolant circulation unit configured to circulate the coolant into the injection lance;상기 고압가스 분사부, 상기 랜스 경사각 조정부, 상기 랜스 전후진 구동부 및 상기 냉각수 순환부를 총괄적으로 제어하는 제어부를 포함하여 이루어진 슬래그 유출 방지 장치.And a controller configured to collectively control the high pressure gas injection unit, the lance inclination angle adjusting unit, the lance forward and backward driving unit, and the cooling water circulation unit.
- 제 6 항에 있어서,The method of claim 6,유/무선 통신망을 통해 전로 제어 설비로부터 출강과 관련한 전로 정보를 전달받는 통신부를 더 구비하고,It is further provided with a communication unit for receiving the transmission information related to the tapping from the converter control equipment through the wired / wireless communication network,상기 제어부는 상기 통신부를 통해 전달받은 상기 전로 정보에 의거하여 상기 고압가스 분사부, 상기 랜스 경사각 조정부, 상기 랜스 전후진 구동부 및 상기 냉각수 순환부를 제어하는 것을 특징으로 하는 슬래그 유출 방지 장치.And the control unit controls the high pressure gas injection unit, the lance inclination angle adjusting unit, the lance forward and backward driving unit, and the coolant circulation unit based on the converter information received through the communication unit.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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RU2014144902A RU2014144902A (en) | 2013-08-07 | 2013-09-17 | DEVICE FOR PREVENTION OF SLAC LEAKAGE AND A FURNACE FOR HIGH PRESSURE GAS USED IN IT |
EP13883844.6A EP3031934A1 (en) | 2013-08-07 | 2013-09-17 | Device for preventing slag outflow and high pressure gas injection lance used therein |
CN201380023895.4A CN104540969A (en) | 2013-08-07 | 2013-09-17 | Device for preventing slag outflow and high pressure gas injection lance used therein |
JP2015531023A JP5873220B2 (en) | 2013-08-07 | 2013-09-17 | Slag outflow prevention device and its high-pressure gas injection lance |
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KR10-2013-0093818 | 2013-08-07 | ||
KR1020130093818A KR101482510B1 (en) | 2013-08-07 | 2013-08-07 | slag out-flow prevention apparatus and high prssure gas shooting lamce therein |
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WO2015020261A1 true WO2015020261A1 (en) | 2015-02-12 |
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PCT/KR2013/008424 WO2015020261A1 (en) | 2013-08-07 | 2013-09-17 | Device for preventing slag outflow and high pressure gas injection lance used therein |
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EP (1) | EP3031934A1 (en) |
JP (1) | JP5873220B2 (en) |
KR (1) | KR101482510B1 (en) |
CN (1) | CN104540969A (en) |
RU (1) | RU2014144902A (en) |
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WO (1) | WO2015020261A1 (en) |
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KR101834958B1 (en) * | 2016-12-23 | 2018-03-07 | 주식회사 포스코 | Slag skimming apparatus |
CN108251596B (en) * | 2018-04-11 | 2023-08-25 | 北京科技大学 | Fixed converter tapping hole double-nozzle structure |
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2013
- 2013-08-07 KR KR1020130093818A patent/KR101482510B1/en not_active IP Right Cessation
- 2013-09-17 RU RU2014144902A patent/RU2014144902A/en not_active Application Discontinuation
- 2013-09-17 WO PCT/KR2013/008424 patent/WO2015020261A1/en active Application Filing
- 2013-09-17 EP EP13883844.6A patent/EP3031934A1/en not_active Withdrawn
- 2013-09-17 CN CN201380023895.4A patent/CN104540969A/en active Pending
- 2013-09-17 JP JP2015531023A patent/JP5873220B2/en active Active
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2014
- 2014-08-07 TW TW103127020A patent/TWI527907B/en active
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KR940007492B1 (en) * | 1992-06-02 | 1994-08-18 | 포항종합제철 주식회사 | Method of slag mixture prevention |
KR20010059603A (en) * | 1999-12-30 | 2001-07-06 | 이구택 | Electric furnace having gas blowing nozzle for forming gas curtain |
KR200202693Y1 (en) * | 2000-03-15 | 2000-11-15 | 주식회사천양 | Gas injector |
KR100862819B1 (en) | 2002-07-15 | 2008-10-13 | 주식회사 포스코 | A slag dart |
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KR101058394B1 (en) | 2008-12-09 | 2011-08-24 | (주)한국뮤녹스에너지 | Slag dart using recovered magnesia chromium-based refractory material and method for producing same |
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Publication number | Publication date |
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KR101482510B1 (en) | 2015-01-19 |
EP3031934A1 (en) | 2016-06-15 |
TWI527907B (en) | 2016-04-01 |
TW201525148A (en) | 2015-07-01 |
CN104540969A (en) | 2015-04-22 |
JP5873220B2 (en) | 2016-03-01 |
RU2014144902A (en) | 2017-09-14 |
JP2015528067A (en) | 2015-09-24 |
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