KR20010045634A - The Main Iron Through including the Electromagnet - Google Patents

The Main Iron Through including the Electromagnet Download PDF

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Publication number
KR20010045634A
KR20010045634A KR1019990048976A KR19990048976A KR20010045634A KR 20010045634 A KR20010045634 A KR 20010045634A KR 1019990048976 A KR1019990048976 A KR 1019990048976A KR 19990048976 A KR19990048976 A KR 19990048976A KR 20010045634 A KR20010045634 A KR 20010045634A
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South Korea
Prior art keywords
electromagnet
runner
slag
bath
points
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KR1019990048976A
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Korean (ko)
Inventor
김석봉
김재봉
김종오
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이구택
포항종합제철 주식회사
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Priority to KR1019990048976A priority Critical patent/KR20010045634A/en
Publication of KR20010045634A publication Critical patent/KR20010045634A/en

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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B7/00Blast furnaces
    • C21B7/14Discharging devices, e.g. for slag
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/14Charging or discharging liquid or molten material
    • F27D3/145Runners therefor

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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)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE: A runner apparatus is provided which not only reduces vortex flow of molten materials but also separate hot metal from slag in a short period of time. CONSTITUTION: In a runner apparatus of a blast furnace, the electromagnet runner apparatus for preventing hot metal from being mixed with slag during iron tapping comprises heat resisting bricks (12a) which is built on an iron skin (11) of a runner (10); electromagnets (30) which are installed at a plurality of points comprising two points where vortex flow is generated and a middle point of the runner between the lower part of a tapping hole and a skimmer out of the bottom portion on the heat resisting bricks (12a); and an inlet refractories (13) which is installed after building the heat resisting bricks (12b) again.

Description

유선방지를 위한 전자석 대탕도 장치{The Main Iron Through including the Electromagnet}Electromagnet bath device to prevent mammary gland {The Main Iron Through including the Electromagnet}

본 발명은 용선과 슬래그의 분리를 원활하게 하는 고로 대탕도의 구조에 관한 것으로, 더욱 상세히는 전자석을 이용하여 용선을 분리함으로써 상기 재탕도(Slag Runner)로의 유선을 방지할 수 있는 출선 중 유선방지를 위한 전자석 대탕도 장치에 관한 것이다.The present invention relates to a structure of a blast furnace large flowway that facilitates separation of molten iron and slag, and more particularly, prevents streamline during outgoing ship that can prevent the wire to the slag runner by separating the molten iron using an electromagnet. It relates to an electromagnet large water device for.

통상적으로 종래의 대탕도(10) 구조는 도 1과 도 2에 도시된 바와 같이 외부는 내열 철피(11)로 되어 있고, 상기 내열 철피(11)의 내부에는 내열연와(12)를 축조한 후 그 위에 유입내화물(13)을 유입 건조시킨 구조로 되어 있다.Typically, as shown in FIGS. 1 and 2, the structure of the conventional large bath 10 is made of heat-resistant steel shell 11, and after the heat-resistant rolled steel 12 is built in the heat-resistant steel shell 11. The inflow refractory material 13 is made inflow-drying on it.

상기 대탕도(10)의 총 길이는 보통 18미터 정도이며, 일측은 고로 본체의 하부에 위치한 노저부(14)와 연결되어 있고, 다른 일측은 분리된 용선을 흘려보내는 탕도인 지탕도(16, Iron Runner)와 연결되어 있다. 또한 배재구(17)와 2블럭(15)의 중간부분는 상기 대탕도(10)의 바닥쪽에 있는 용선만 하부로 흐르게 할 수 있는 공간이 있는 스키머(19)가 설치되어 있다. 상기 배재구(17), 2블럭(15) 및 스키머(19)의 바닥높이는 상기 대탕도(10) 상부면을 기준으로 하여, 배재구(17)가 가장 높고, 그 다음은 2블럭(15) 그리고 그 다음은 스키머(19)로 되어 있어, 출선구(20)에서 배출된 용선과 슬래그는 비중차이와 상기 대탕도(10) 각 부위의 바닥높이 차이에 의해 분리될 수 있도록 하고 있다.The total length of the large bath 10 is usually about 18 meters, and one side is connected to the bottom part 14 located at the bottom of the blast furnace body, and the other side of the large bath 10 is a bath line for flowing a separate molten iron (16). , Iron Runner). In addition, the skimmer 19 having a space capable of flowing only the molten iron at the bottom of the large waterway 10 is provided in the middle portion of the outlet 17 and the second block 15. The height of the bottom of the outlet 17, the second block 15 and the skimmer 19 is based on the upper surface of the large bath 10, the highest outlet 17, and then the second block 15 And the next is a skimmer 19, the molten iron and slag discharged from the outlet 20 is to be separated by the difference in specific gravity and the bottom height difference of each portion of the large bath (10).

여기서 대탕도의 각 부분은 고로의 내용적에 따라 길이, 넓이, 깊이가 설계되어 설치되지만, 조업 중 노황상태에 따라 용선과 슬래그의 분리가 원활하게 되지 못하는 경우가 발생한다.Here, each part of Daetangdo is designed and installed in length, width, and depth according to the contents of the blast furnace, but the separation of molten iron and slag does not occur smoothly depending on the condition of yellowing during operation.

즉 상기와 같은 종래의 대탕도(10) 구조에 있어서는 상기 출선구(20)에서 배출된 용융물의 배출속도 및 무게에 의해 낙하지점에서 심한 와류현상이 발생하게 되므로, 용선과 슬래그의 혼합현상으로 인해 완전분리가 어렵게 된다. 이와 같이 완전분리가 이루어지지 않는 용융물이 상기 배재구(17)를 통해 재탕도(18)로 유입되면, 유선이 발생하게 되며 이렇게 발생되는 유선의 양은 통상 용선의 전체 양의 약 0.02%에 달하는 것으로 알려져 있다. 그런데 이렇게 용선이 함유된 슬래그가 재탕도(18)로 유입되면 수재설비 및 괴재 처리설비인 드라이피트(dry pit)에서 냉각수와 접촉하여 폭발현상을 일으키게 되고, 이로 인하여 설비 파손 및 인명피해를 발생시키는 심각한 문제점이 있었다.That is, in the conventional large bath 10 structure as described above, due to the discharge speed and the weight of the melt discharged from the outlet port 20 is a severe vortex phenomenon occurs at the dropping point, due to the mixing phenomenon of molten iron and slag Full separation becomes difficult. As such, when the melt is not completely separated into the reflow water 18 through the outlet 17, a streamline is generated, and the amount of streamline generated is usually about 0.02% of the total amount of molten iron. Known. However, when the slag containing molten iron flows into the re-tangency 18, it explodes in contact with the cooling water in the dry pit, which is a water treatment facility and a lump treatment facility, and causes an explosion and damage to the facility. There was a serious problem.

본 발명은 상기한 문제점을 해결하고자 안출된 것으로, 용융물의 와류현상을 감소시킴과 동시에 단시간 내에 분리할 수 있는 대탕도 장치를 제공하려는 것이다.The present invention has been made to solve the above problems, to reduce the vortex of the melt and at the same time to provide a large hot water apparatus that can be separated in a short time.

도 1은 종래의 대탕도 구조의 사시도1 is a perspective view of a conventional large bath structure

도 2는 종래의 대탕도의 단면도Figure 2 is a cross-sectional view of the conventional large hot water

도 3은 본 발명에 의한 전자석 대탕도 구조의 사시도Figure 3 is a perspective view of the electromagnet large bath structure according to the present invention

도 4는 본 발명에 의한 전자석 대탕도의 단면도Figure 4 is a cross-sectional view of the electromagnet large bath according to the present invention

도 5는 본 발명에 의한 전자석 대탕도의 시공 사시도 및 전자석의 구조도5 is a perspective view of the construction of the electromagnet large bath according to the present invention and the structural diagram of the electromagnet

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 대탕도 11 : 철피10: big bath 11: iron bar

12 : 내열연와 13 : 유입내화물12: hot-rolled and 13: inflow refractory

14 : 노저부 15 : 2블럭14: Nose part 15: 2 blocks

16 : 지탕도(Iron Runner) 17 : 배재구16: Iron Runner 17: Bae Jae-gu

18 : 재탕도(Slag Runner) 19 : 스키머(Skimmer)18: Slag Runner 19: Skimmer

20 : 출선구 30 : 전자석(Electromagnet)20: exit port 30: electromagnet (Electromagnet)

31 : 철판 32 : 전원31: iron plate 32: power

A,B : 와류생성지점 C : 대탕도의 중간지점A, B: Vortex creation point C: Middle point of Daetangdo

상기 과제를 달성하기 위하여 본 발명은 기본적으로 대탕도의 바닥에 매설되는 다수 개의 전자석과 상기 전자석을 구동시키는 전원장치 및 상기 전자석의 열에 의한 열화를 방지하는 방열부재로 구성된다. 이하 첨부된 도면을 참조하여 본 발명의 대탕도 장치를 상세히 설명한다.In order to achieve the above object, the present invention basically consists of a plurality of electromagnets embedded in the floor of a large bath, a power supply device for driving the electromagnets, and a heat dissipation member for preventing deterioration by heat of the electromagnets. Hereinafter, with reference to the accompanying drawings will be described in detail the apparatus for pouring water of the present invention.

본 발명의 대탕도 장치는 도 3 내지 도 5에 도시된 바와 같이, 대탕도(10)의 철피(11) 위에 1차로 내열연와(12a)를 축조하고, 상기 대탕도(10)의 바닥부위 중 출선구(20) 하부와 스키머(19) 사이의 다수의 지점, 예를 들면 와류가 발생하는 두 지점(A, B)과 대탕도의 중간지점(C)에 각각 1개씩의 전자석(30a, 30b, 30c)을 상기 내열연와(12a) 위에 설치한 뒤에, 다시 2차 내열연와(12b)를 축조한 후 유입내화물(13)을 설치하여 구성된다.3 to 5 of the present invention, as shown in Figs. 3 to 5, the heat-resistant hot rolled fabric (12a) is primarily built on the steel bar 11 of the large bath 10, the bottom of the large bath 10 One electromagnet 30a, 30b each at a plurality of points between the lower part of the exit port 20 and the skimmer 19, for example, two points A and B where vortices occur and a middle point C of the large bath. , 30c) is installed on the hot-rolled sheet 12a, and then the second heat-resistant roll 12b is constructed, and then the inflow refractory 13 is installed.

여기서 상기 전자석(30)은 내열성이 큰 특성만 있다면 어떠한 형상이라도 무관하지만, 본 발명의 실시예에 의하면 5에 도시된 바와 같이 일반적으로 전자석 크레인에 사용되는 전자석 판과 같은 원반형의 전자석(30)을 상기 내열연화(12) 축조시의 작업상 편의를 위해 사각 형태의 철판(31)으로 둘러 용접하였고, 상기 전자석(30)에 전력을 공급하는 전원(32)을 전선으로 연결하였다.Here, the electromagnet 30 may have any shape as long as it has high heat resistance, but according to the exemplary embodiment of the present invention, as shown in FIG. 5, a disc-shaped electromagnet 30 such as an electromagnet plate generally used in an electromagnet crane is shown. For the convenience of work during the construction of the heat-resistant softening (12) was welded around the square plate 31 of the square shape, the power supply 32 for supplying power to the electromagnet 30 was connected by wires.

이하 상기와 같은 구성을 가지는 본 발명의 대탕도 장치의 작용을 설명한다.Hereinafter, the operation of the large tap water device of the present invention having the configuration as described above.

먼저 출선이 개시되어 출선구(20)로부터 용융물이 분출되어 대탕도(10)로 흐르는 시점에 상기 대탕도(10) 바닥에 설치된 전자석(30a, 30b,30c)의 전원(32)을 투입하여 자력을 발생시킨다. 이렇게 발생된 자력은 용융물 중의 용선에 작용하여 상기 용선을 상기 대탕도(10) 하부바닥측으로 강하게 끌어 당긴다. 따라서 상기 대탕도(10) 내의 와류생성지점인 A, B에서 발생하는 용융물의 와류현상을 크게 완화시키며, 또한 상대적으로 비중이 높고 자성이 강한 상기 용선은 상기 대탕도의 하부바닥측에 위치하게 되어 상기 슬래그와의 분리가 원활히 이루어진다. 이렇게 분리된 슬래그와 용선은 각각 별개의 통로를 통해 원활히 배출된다.First, starting the starting point, the melt is ejected from the tapping opening 20 and flows to the large bath 10, and the electric power 32 of the electromagnets 30a, 30b, and 30c installed at the bottom of the large bath 10 is turned on, and the magnetic force is applied. Generates. The magnetic force generated in this way acts on the molten iron in the melt and draws the molten iron strongly toward the bottom of the large bath 10. Therefore, the vortex phenomenon of the melt generated at the vortex generation points A and B in the large bath 10 is greatly alleviated, and the molten iron having a relatively high specific gravity and strong magnetic force is located at the bottom bottom side of the large bath. Separation with the slag is made smoothly. The slag and the molten iron thus separated are smoothly discharged through separate passages.

다음으로 출선이 종료되어 상기 대탕도(10) 내의 용융물의 흐름이 정지되면, 상기 전자석(30)의 전원(32)을 차단하여 자력이 없는 본래의 상태로 복귀되도록 한다.Next, when the starting line is finished and the flow of the melt in the large bath 10 is stopped, the power source 32 of the electromagnet 30 is cut off to return to the original state without magnetic force.

따라서, 상기와 같은 구성을 가지는 본 발명에 의하면 와류현상이 감소하고,용선과 슬래그의 분리가 원활해짐에 따라 재탕도로의 유선 방지가 효과적이므로, 폭발사고로 인한 설비파손과 인명피해를 막고, 유선되는 용선을 회수하는 경제적 효과도 얻을 수 있는 매우 획기적인 발명이다.Therefore, according to the present invention having the above configuration, the vortex phenomenon is reduced, and the separation of the molten iron and the slag is smoothed, so that the prevention of reflow road is effective, thereby preventing facility damage and human injury caused by an explosion accident, It is a very innovative invention that can also achieve the economic effect of recovering the molten iron.

Claims (1)

고로의 대탕도 장치에 있어서 대탕도(10)의 철피(11) 위에 내열연와(12a)를 축조하고,In the blast-furnace apparatus of the blast furnace, a heat-resistant hot roll 12a is constructed on the steel bar 11 of the large-scale furnace 10, 상기 내열연와(12a) 위의 바닥부위 중에 출선구(20) 하부와 스키머(19) 사이에서 와류가 발생하는 두 지점(A, B)과 대탕도의 중간지점(C)을 포함하는 다수 지점에서 전자석(30)을 설치하며,At a plurality of points including two points (A, B) in which vortices occur between the outlet 20 and the skimmer 19 and a middle point C of the large bath in the bottom portion of the hot-rolled roll 12a. Install the electromagnet 30, 다시 내열연와(12b)를 축조한 후 유입내화물(13)을 설치함을 특징으로 하는출선 중 유선방지를 위한 전자석 대탕도 장치.Electrostatic large water bath for preventing wired out of the ship, characterized in that after installing the heat-resistant hot roll (12b) again and installed inflow refractory (13).
KR1019990048976A 1999-11-05 1999-11-05 The Main Iron Through including the Electromagnet KR20010045634A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100617252B1 (en) * 2000-04-08 2006-08-29 주식회사 포스코 Slag guiding device in slag-granulation diverging point of blast furnace
CN109402308A (en) * 2018-12-04 2019-03-01 宁夏森源重工设备有限公司 A kind of large size mineral hot furnace is come out of the stove slag running gate system of combing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02301505A (en) * 1989-05-16 1990-12-13 Kawasaki Steel Corp Method for controlling discharge of molten metal from metal melting furnace
JPH07188719A (en) * 1993-12-28 1995-07-25 Kawasaki Steel Corp Method for separating tapped iron and slag of blast furnace
KR19990052666A (en) * 1997-12-23 1999-07-15 이구택 How to prevent inflow of slag in molten iron
KR20010000970A (en) * 2000-10-31 2001-01-05 천영락 Multi stage starter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02301505A (en) * 1989-05-16 1990-12-13 Kawasaki Steel Corp Method for controlling discharge of molten metal from metal melting furnace
JPH07188719A (en) * 1993-12-28 1995-07-25 Kawasaki Steel Corp Method for separating tapped iron and slag of blast furnace
KR19990052666A (en) * 1997-12-23 1999-07-15 이구택 How to prevent inflow of slag in molten iron
KR20010000970A (en) * 2000-10-31 2001-01-05 천영락 Multi stage starter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100617252B1 (en) * 2000-04-08 2006-08-29 주식회사 포스코 Slag guiding device in slag-granulation diverging point of blast furnace
CN109402308A (en) * 2018-12-04 2019-03-01 宁夏森源重工设备有限公司 A kind of large size mineral hot furnace is come out of the stove slag running gate system of combing

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