KR20040042528A - Tap hole sealing means attached to mud gun tip - Google Patents

Tap hole sealing means attached to mud gun tip Download PDF

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Publication number
KR20040042528A
KR20040042528A KR1020020070838A KR20020070838A KR20040042528A KR 20040042528 A KR20040042528 A KR 20040042528A KR 1020020070838 A KR1020020070838 A KR 1020020070838A KR 20020070838 A KR20020070838 A KR 20020070838A KR 20040042528 A KR20040042528 A KR 20040042528A
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South Korea
Prior art keywords
mud
nozzle tip
gun nozzle
mud gun
sealing member
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KR1020020070838A
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Korean (ko)
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KR100901981B1 (en
Inventor
김상범
박용권
강경철
천세호
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주식회사 포스코
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Priority to KR1020020070838A priority Critical patent/KR100901981B1/en
Publication of KR20040042528A publication Critical patent/KR20040042528A/en
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Publication of KR100901981B1 publication Critical patent/KR100901981B1/en

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    • 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
    • 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
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blast Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE: A tap hole sealing member attached to front end part of mud gun nozzle tip is provided to prevent outflow of mud material by sealing the tap hole surface in the defective state without erosion of mud material of the mud gun nozzle tip when instantaneously closely adhering the mud gun nozzle tip to the tap hole joining surface. CONSTITUTION: The tap hole sealing member attached to front end part of mud gun nozzle tip is characterized in that the tap hole sealing member is formed in a cylindrical shape which is formed of fluorine fire-retardant rubber material, which encircles the mud gun nozzle tip, which is inserted into the mud gun nozzle tip, and a rear end part of which is opened, the tap hole sealing member integrally comprises an outer circumferential surface(20) having the same inner diameter as outer diameter of the mud gun nozzle tip; a non-asbestos layer(22) coated on the outer circumferential surface to suppress progress of carbonization of the outer circumferential surface due to high temperature; a mud material guidance hole(18) formed at the center of a front end part of the tap hole sealing member to guide the mud material from the mud gun into diameter of tap hole; and a central inserting part(16) that is a cylindrical projecting part installed at the central size of the inner surface of the front end part to form the outer circumferential surface corresponding to the inner diameter of the mud gun nozzle tip, wherein front shape of the front end part corresponds to shape of tap hole surfaces, shape of the inner surface of the front end part corresponds to shape of front end surfaces of the mud gun nozzle tip, and a concave lens shaped front end surface part is formed around the mud material guidance hole.

Description

머드건 노즐팁 선단부에 부착되는 출선구 실링부재{Tap hole sealing means attached to mud gun tip}Tap hole sealing means attached to mud gun tip}

본 발명은 머드건 노즐팁 선단부에 부착되는 출선구 실링부재에 관한 것으로서, 더욱 상세하게는 고로 출선구 면에 용융물 부착이나 내화물 탈락 등으로 요철이 발생하여 긴급 폐쇄시 출선구 접합면과 머드건 노즐팁이 순간 밀착할 때 머드건 노즐팁의 머드재를 침식시키지 않고 불량상태의 출선구 면을 실링하여 머드재의 유출을 방지하는 머드건 노즐팁 선단부에 부착되는 출선구 실링부재에 관한 것이다.The present invention relates to an outlet sealing member attached to a tip portion of a mud gun nozzle tip, and more particularly, unevenness occurs due to melt adhesion or refractory dropping on the blast furnace exit surface, and thus, the exit junction surface and the mud gun nozzle during emergency closing. The present invention relates to an outlet sealing member attached to a tip portion of a mud gun nozzle tip which prevents the outflow of the mud material by sealing the exit surface of the defective state without eroding the mud material of the mud gun nozzle tip when the tip is in close contact.

일반적으로, 고로(1)에서 철광석을 환원 용해시켜 노저에 용융물(2)이 고이게 되면 외부 원주방향으로 구비된 4개의 출선구(3)를 통해 용선과 슬래그의 용융물(2)이 일정 압력(4㎏/㎠)을 가지고 노외로 배출되며, 용융물(2)의 배출이 완료되면 고온의 바람과 함께 용융물(2)이 출선구(3)로부터 비산되는 공취현상이 일어나게 되고, 이때 머드건(mud gun)(5)으로 출선구(3)를 폐쇄하게 된다.In general, when the melt ore is accumulated in the furnace by reducing and dissolving iron ore in the blast furnace 1, the melt 2 of the molten iron and the slag is provided at a constant pressure (4) through the four outlets 3 provided in the outer circumferential direction. ㎏ / ㎠) is discharged to the outside of the furnace, and when the discharge of the melt (2) is completed, a depletion phenomenon that the melt (2) is scattered from the exit port 3 with a high temperature wind occurs, this time mud gun (mud gun) (5) to close the exit port (3).

상기 머드건(5)은 출선구(3)를 머드재(mud材)로 충진하기 위한 것으로서, 선단부에 머드건 노즐팁(6)이 구비되어 있으며, 300㎏/㎠의 고압으로 출선구(3)를 폐쇄시키고, 머드건 노즐팁(6)측으로 머드재(7)를 출선구(3) 내부로 충진하여 출선구(3)를 폐쇄시키게 된다.The mud gun 5 is to fill the tap opening 3 with a mud material, and is provided with a mud gun nozzle tip 6 at the tip, and the tap opening 3 at a high pressure of 300 kg / cm 2. ) Is closed, and the mud material 7 is filled into the tap opening 3 toward the mud gun nozzle tip 6 to close the tap opening 3.

한편, 출선구(3)는 도 1에 도시된 바와 같이 외측면(3a), 경사면(3b), 내측면(3c)을 형성하고 있는데, 출선시에는 항상 용융물(2)이 사방으로 비산되어 수지상의 형태로 지금이 부착되어 요철부가 발생되게 되며, 이로써 머드재(7)가 출선구 구경(4) 내부로 충진되지 않고 출선구(3)와 머드건 노즐팁(6)의 접합부에서 유출되는 현상이 발생되게 된다.On the other hand, the tap opening 3 forms an outer surface 3a, an inclined surface 3b, and an inner surface 3c as shown in FIG. 1, and at the time of starting, the melt 2 is scattered in all directions to form a resinous phase. Unevenness is generated in the form of the now attached, so that the mud material (7) flows out of the junction of the outlet 3 and the mud gun nozzle tip 6 without filling into the outlet opening (4) Will be generated.

이와 같은 유출은 또한 출선구(3) 면(3a, 3c)상에 국부적인 손상이나 내화물의 탈락이 발생하였을 때도 동일하게 발생된다.This outflow also occurs in the same way when local damage or refractory dropout occurs on the surfaces 3a and 3c of the outlet port 3.

이와 같이 머드재(7)의 유출이 발생되면, 통상적으로는 출선구(3) 내, 외측면(3c, 3a)을 장비로 제거한 다음 부정형 내화물(AN210)을 물과 일정한 비율로 혼합하여 출선구 면(3a, 3c)에 일정 두께로 도포하고, 머드건(5)을 선회 밀착시켜 출선구(3)를 재생시키며, 이때 출선구(3) 주위의 고온에 의해 소성과정을 거쳐 출선구(3) 재생작업이 완료되게 된다.In this way, when the outflow of the mud material (7) occurs, usually, in the outlet opening (3), the outer surface (3c, 3a) to remove the equipment, and then the irregular refractory (AN210) by mixing with water at a constant rate Apply to a certain thickness on the surface (3a, 3c), the mud gun (5) is rotated in close contact to regenerate the tap opening (3), at this time through the firing process by the high temperature around the tap opening (3) The playback operation is completed.

전술한 바와 같이, 머드재(7)가 전량 충진되지 않고 유출되어 한번에 용융물(2)이 연속적으로 배출되는 가운데 출선구(3)를 폐쇄하지 못하는 경우에는 출선구(3)로 고온의 바람과 함께 용융 비산물이 외부로 누출되어 맹독성 가스에 의한 환경오염과 작업자의 가스중독 위험이 발생되고, 또한 머드재(7)의 유출에 따라 출선구 구경(4)에 부정형 내화물 봉입량이 적게 되어 출선구(3) 심도저하 현상이 발생되고 이로써 출선구 구경(4)이 급격히 확대되게 되어 출선구(3)를 조기에 폐쇄해야 하는 문제가 발생된다.As described above, when the mud material 7 is not filled in the whole quantity and flows out and the melt 2 is continuously discharged at once, the tap opening 3 cannot be closed, and together with the high temperature wind to the tap opening 3. Due to the leakage of molten fly-bye to the outside, there is a risk of environmental pollution and gas poisoning of workers due to the poisonous gas. Also, the amount of irregular refractory inclusions in the exit opening diameter 4 decreases due to the outflow of the mud material 7. 3) Deterioration of depth occurs, which causes the exit port opening 4 to be rapidly enlarged, causing the exit port 3 to be closed early.

본 발명은 상기와 같은 제반 문제점을 해결하기 위하여 창안된 것으로서, 출선구 면에 용융물 부착이나 내화물 탈락 등으로 요철이 발생하여 긴급 폐쇄시 출선구 접합면과 머드건 노즐팁이 순간 밀착할 때 머드건 노즐팁의 머드재를 침식시키지 않고 불량상태의 출선구 면을 실링하여 머드재의 유출을 방지하는 머드건 노즐팁 선단부에 부착되는 출선구 실링부재를 제공하는데 그 목적이 있다.The present invention was devised to solve the above problems, the mud gun when the junction surface and the mud gun nozzle tip is in close contact with the outlet at the time of emergency closing due to unevenness caused by the attachment of melt or refractory dropping on the exit surface It is an object of the present invention to provide an outlet sealing member attached to a tip portion of a mud gun nozzle tip which prevents the outflow of the mud material by sealing the outlet port in a bad state without eroding the mud material of the nozzle tip.

본 발명의 다른 목적 및 장점들은 하기에 설명될 것이며, 본 발명의 실시에 의해 알게 될 것이다. 또한, 본 발명의 목적 및 장점들은 첨부된 특허청구범위에 나타낸 수단 및 조합에 의해 실현될 수 있다.Other objects and advantages of the invention will be described below and will be appreciated by the practice of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the appended claims.

도 1은 고로 출선구 폐쇄시를 보여주는 도면,1 is a view showing the blast furnace exit closing time,

도 2는 본 발명에 따른 출선구 실링부재에 대한 단면도,2 is a cross-sectional view of the outlet sealing member according to the present invention;

도 3은 본 발명에 따른 출선구 실링부재가 머드건 노즐팁의 선단부에 부착된 상태를 보여주는 단면도,3 is a cross-sectional view showing a state in which the outlet sealing member according to the present invention is attached to the front end of the mud gun nozzle tip;

도 4는 본 발명에 따른 출선구 실링부재가 고온에서 카본화된 것을 보여주는 사진이다.Figure 4 is a photograph showing that the outlet sealing member according to the present invention is carbonized at a high temperature.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 고로 2 : 용융물1: blast furnace 2: melt

3 : 출선구 3a : 출선구 외측면3: exit port 3a: exit side

3b : 출선구 경사면 3c : 출선구 내측면3b: Exit surface slope 3c: Exit side inner surface

4 : 출선구 구경 5 : 머드건(mud gun)4: exit number 5: mud gun

6 : 머드건 노즐팁(nozzle tip) 6a : 머드건 노즐팁 외측면6: Mud gun nozzle tip 6a: Mud gun nozzle tip outer surface

6b : 머드건 노즐팁 경사면 6c : 머드건 노즐팁 내측면6b: Mud gun nozzle tip slope 6c: Mud gun nozzle tip inner surface

7 : 머드재(mud材) 8 : 머드건 실린더7 mud material 8 mud gun cylinder

10 : 출선구 실링부재 12a : 실링부재 전면 외측면10: exit port sealing member 12a: sealing member front outer surface

12b : 실링부재 전면 경사면 12c : 실링부재 전면 내측면12b: sealing member front inclined surface 12c: sealing member front inner surface

14a : 실링부재 내부면 외측면 14b : 실링부재 내부면 경사면14a: sealing member inner surface outer surface 14b: sealing member inner surface inclined surface

14c : 실링부재 내부면 내측면 16 : 실링부재 중앙 삽입부14c: sealing member inner surface inner surface 16: sealing member center insertion portion

18 : 실링부재 머드재 유도구멍 20 : 실링부재 외부 원주면18: sealing member mud material guide hole 20: sealing member outer circumferential surface

22 : 비석면층22: non-asbestos layer

상기와 같은 목적을 달성하기 위한 본 발명의 머드건 노즐팁 선단부에 부착되는 출선구 실링부재는, 고로(1) 출선구(3)를 머드건(5)을 이용한 머드재(7) 충입으로 폐쇄시키는데 있어서, 불소 난연성 고무재질로, 머드건 노즐팁(6) 부분을 감싸고 끼워질 수 있는 후단부가 개방된 원통형태의 것으로, 상기 머드건 노즐팁(6)의 외경과 동일한 내경의 외부 원주면(20)과, 상기 외부 원주면(20)상에 코팅 구비되어 고열에 의한 카본화의 진행을 억제시키는 비석면층(22)과, 전단부 중앙에 구비되어 상기 머드건(5)으로부터 상기 머드재(7)를 출선구 구경(4)내로 유도하는 머드재 유도구멍(18)과, 상기 전단부 내부면의 중앙측에 상기 머드건 노즐팁(6)의 내경에 대응하는 외주면을 가지도록 구비되는 원통형 돌출부인 중앙 삽입부(16)를 일체로 구비하며, 상기 전단부 전면의 형상은 상기 출선구 면(3a, 3b, 3c)의 형상과 대응되고, 상기 전단부 내부면의 형상은 상기 머드건 노즐팁(6)의 선단면(6a, 6b, 6c)의 형상과 대응되며, 상기 머드재 유도구멍(18)을 중심으로 오목렌즈 형상의 전단면부가 형성되어 있는 구성으로, 상기 출선구(3) 폐쇄시 상기 출선구 면(3a, 3b, 3c)과 밀착하는 상기 머드건 노즐팁(6)의 선단부에 장착되어, 상기 머드건 노즐팁(6)의 상기 머드재(7)를 침식시키지 않고 상기 출선구 면(3a, 3b, 3c)을 실링하여 상기 머드재(7)의 유출을 방지하는 것을 특징으로 한다.The outlet sealing member attached to the tip of the mud gun nozzle tip of the present invention for achieving the above object is closed by filling the blast furnace (1) outlet port 3 with the mud material (7) using the mud gun (5) In the fluorine flame-retardant rubber material, the outer end surface of the mud gun nozzle tip 6 having a cylindrical shape with an open end, which can be enclosed and fitted, has an outer circumferential surface having the same inner diameter as the outer diameter of the mud gun nozzle tip 6 ( 20), a non-asbestos layer 22 provided with a coating on the outer circumferential surface 20 to suppress the progress of carbonization due to high heat, and a mud material from the mud gun 5 provided at the center of the front end portion. 7) a cylindrical member provided with a mud material guide hole 18 for guiding the inside of the exit opening aperture 4 and an outer circumferential surface corresponding to the inner diameter of the mud gun nozzle tip 6 at the center side of the inner surface of the front end portion; It is provided with a central inserting portion 16, which is a protrusion integrally, the front end of the front end The shape corresponds to the shape of the exit surface 3a, 3b, 3c, the shape of the inner surface of the front end portion corresponds to the shape of the front end surface (6a, 6b, 6c) of the mud gun nozzle tip 6 And a concave lens-shaped shear surface portion is formed around the mud material guide hole 18, and the mud gun is in close contact with the outlet surfaces 3a, 3b and 3c when the outlet opening 3 is closed. Mounted at the tip of the nozzle tip 6, the mud material 7 is sealed by sealing the exit surfaces 3a, 3b, 3c without eroding the mud material 7 of the mud gun nozzle tip 6 It is characterized by preventing the leakage of.

바람직하게, 상기 외부 원주면(20)과 중앙 삽입부(16)의 후단부측 끝단에는 각각 경사각이 가공되어 있어, 상기 머드건 노즐팁(6)으로의 장착을 용이하게 한다.Preferably, the inclination angle is processed at each of the outer circumferential surface 20 and the rear end side end of the central inserting portion 16 to facilitate mounting to the mud gun nozzle tip 6.

그리고 바람직하게, 네오프렌 70%, 불소 성분 20%, 불소수지 10%인 불소 난연성 고무재질이다.And preferably, it is a fluorine flame-retardant rubber material of 70% neoprene, 20% fluorine component, 10% fluorine resin.

이하, 첨부된 도면을 참조로 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 머드건 노즐팁 선단부에 부착되는 출선구 실링부재에 대한 단면도이다.Figure 2 is a cross-sectional view of the outlet sealing member attached to the tip of the mud gun nozzle tip according to the present invention.

그리고, 도 3은 본 발명에 따른 출선구 실링부재가 머드건 노즐팁의 선단부에 부착된 상태를 보여주는 단면도이다.And, Figure 3 is a cross-sectional view showing a state that the outlet sealing member according to the present invention is attached to the front end of the mud gun nozzle tip.

본 발명에서는 출선구(3) 폐쇄시 출선구 접합면(3a, 3b, 3c)과 머드건 노즐팁(6)이 순간 밀착할 때, 머드건 노즐팁(6) 선단부의 머드재(7)를 침식시키지 않고 불량상태의 출선구 면(3a, 3b, 3c)을 실링(sealing)하여 머드재(7)의 유출을 방지하는 머드건 노즐팁(6)의 선단부에 부착되는 출선구 실링부재(10)가 제공된다.In the present invention, when the outlet openings 3a, 3b, and 3c and the mud gun nozzle tip 6 are in close contact with each other when the outlet opening 3 is closed, the mud material 7 of the tip of the mud gun nozzle tip 6 is closed. Outlet sealing member 10 which is attached to the distal end of the mud gun nozzle tip 6 which seals out the inlet surface 3a, 3b, 3c in bad state without erosion, thereby preventing the outflow of the mud material 7. ) Is provided.

상기 출선구 실링부재(10)는 불소 난연성 고무로서 네오프렌(neoprene) 70%에 불소 성분 20%를 첨가하고, 불소수지 10%를 혼합하여 금형으로 성형하여 내열성이 우수한 난연성 수지 고형물로 만들어진다.The outlet sealing member 10 is made of a flame retardant resin solid having excellent heat resistance by adding 20% fluorine component to 70% neoprene as a fluorine flame retardant rubber, and mixing 10% fluorine resin into a mold.

그 인장강도는 180㎏/㎠ 이상으로, 이것은 출선구(3) 폐쇄시 머드건(5)이 출선구(3)에 압착되는 압력이 180㎏/㎠ 이상이므로 머드건(5)이 출선구(3)에 압착 후 머드재(7) 봉입시까지 실링부재(10)가 출선구 면(3a, 3b, 3c)상에서 원형을 유지하도록 하기 위한 인장강도이다.The tensile strength is 180 kg / cm 2 or more. This means that when the exit port 3 is closed, the mud gun 5 is compressed to the exit port 3 by 180 kg / cm 2 or more. 3) is a tensile strength for the sealing member 10 to maintain the circular shape on the outlet surface (3a, 3b, 3c) until the mud material 7 is sealed after pressing.

그리고, 그 신장율은 300% 이상으로, 출선구(3)에 머드건(5)이 압착될 때 신장율이 적으면 충격으로 파열의 위험이 있으므로 출선구(3)에 압착 후 머드재(7) 봉입시까지 실링부재(10)가 출선구 면(3a, 3b, 3c)상에서 원형을 유지하도록 하기 위한 신장율이다.The elongation rate is 300% or more. When the mud gun 5 is compressed to the outlet port 3, the elongation rate is small, so there is a risk of rupture due to impact, so that the mud material 7 is sealed after being crimped to the outlet port 3. Elongation for the sealing member 10 to maintain the circular shape on the tap surface 3a, 3b, 3c until now.

이와 같은 재질과 기계적 성질을 가지는 본 발명에 따른 출선구 실링부재(10)의 형상은 기본적으로 머드건 노즐팁(6)부를 감싸고 끼워질 수 있는 형상과 크기를 가지며, 후단부가 개방된 원통형태이다.The shape of the outlet sealing member 10 according to the present invention having such a material and mechanical properties basically has a shape and size that can be wrapped around and fitted with the mud gun nozzle tip 6, and the rear end is a cylindrical shape. .

그 외부 원주면(20)의 내경은 머드건 노즐팁(6)의 외경과 동일하여 도 3에 도시된 바와 같이 머드건 노즐팁(6)을 감싸도록 고정되며, 외부 원주면(20)의 외부에는 고열에 노출되어 카본화가 진행되는 시간을 연장시키기 위해 불연성 비석면층(22)이 코팅되어 있다.The inner diameter of the outer circumferential surface 20 is the same as the outer diameter of the mud gun nozzle tip 6 is fixed to surround the mud gun nozzle tip 6, as shown in Figure 3, the outside of the outer circumferential surface 20 The non-combustible non-asbestos layer 22 is coated in order to prolong the time for carbonization to be exposed to high heat.

상기 출선구 실링부재(10)의 전단부 중앙에는 일정 크기의 홀이 관통되어 있으며, 이 머드재 유도구멍(18)을 통해 머드건(5)으로부터 머드재(7)가 출선구 구경(4)내로 유도된다.A hole having a predetermined size penetrates through the center of the front end of the outlet sealing member 10, and the mud material 7 is discharged from the mud gun 5 through the mud material guide hole 18. Guided into.

그 전단부 전면을 살펴보면, 그 형상은 기본적으로 출선구 면(3a, 3b, 3c)과 대응되도록 하는 형상을 가지며, 출선구 외측면(3a)과 대응되게 전면 외측면(12a)이, 출선구 경사면(3b)과 대응되게 전면 경사면(12b)이, 그리고 출선구 내측면(3c)에 대응되게 전면 내측면(12c)이 일체로 형성되어 있다.Looking at the front end of the front end, the shape basically has a shape to correspond to the exit surface 3a, 3b, 3c, the front outer surface 12a corresponding to the exit port outer surface 3a, the exit port The front inclined surface 12b is formed integrally with the inclined surface 3b, and the front inner surface 12c is formed integrally with the exit opening inner surface 3c.

그리고, 중앙의 머드재 유도구멍(18)을 중심으로 오목렌즈 형상의 전단면부가 형성되어 있는데, 이것은 평면보다 길이가 길어 실링부재(10) 전단면이 고온의 용융물(2)에 접촉되어 카본화가 진행되면서 휘발분이 날아가고 오목렌즈 형상의 전단면부가 평평하게 되어 실링부재(10)의 전면 외측면(12a), 경사면(12b), 내측면(12c)의 형상이 그대로 유지되도록 하기 위함이다.In addition, a concave lens-shaped shear surface portion is formed around the mud material guide hole 18 in the center, which is longer than the plane surface, and thus the shear surface of the sealing member 10 contacts the hot melt 2 to form carbonization. This is to keep the shape of the front outer surface 12a, the inclined surface 12b, the inner surface 12c of the sealing member 10 as the volatiles fly off and the front end surface of the concave lens shape becomes flat.

나아가, 그 전단부 내부면을 살펴보면, 그 형상은 기본적으로 머드건 노즐팁(6)의 선단면(6a, 6b, 6c)에 대응되도록 하는 형상을 가지며, 노즐팁 외측면(6a)과 대응되게 내부면 외측면(14a)이, 노즐팁 경사면(6b)과 대응되게 내부면 경사면(14b)이, 그리고 노즐팁 내측면(6c)에 대응되게 내부면 내측면(14c)이 일체로 형성되어 있다.Furthermore, looking at the inner surface of the front end, the shape basically has a shape that corresponds to the front end surfaces 6a, 6b, 6c of the mud gun nozzle tip 6, and corresponds to the nozzle tip outer surface 6a. The inner surface outer surface 14a is formed integrally with the inner surface inclined surface 14b so as to correspond to the nozzle tip inclined surface 6b and the inner surface inner surface 14c so as to correspond to the nozzle tip inner surface 6c. .

그리고, 상기 실링부재(10)의 전단부 내부면 중앙에는 머드건 노즐팁(6)의 내경과 동일한 외주면을 가지는 원통형 돌출부인 중앙 삽입부(16)가 형성되어 있어, 전술한 실링부재 외부 원주면(20)과 협력하여 머드건 노즐팁(6)에 실링부재(10)가 안정적으로 부착 지지되도록 한다.In addition, a center inserting portion 16, which is a cylindrical protrusion having an outer circumferential surface that is the same as the inner diameter of the mud gun nozzle tip 6, is formed at the center of the inner surface of the front end of the sealing member 10. In cooperation with 20 to ensure that the sealing member 10 is stably attached to the mud gun nozzle tip (6).

전술한 외부 원주면(20)과 중앙 삽입부(16)의 후단부측 끝단에는 각각 경사각이 가공되어 있어 머드건 노즐팁(6)으로의 삽입 장착을 용이하게 한다.The inclination angles are respectively processed at the outer circumferential surface 20 and the rear end side ends of the central inserting portion 16 to facilitate the insertion and mounting to the mud gun nozzle tip 6.

이하, 본 발명에 따른 출선구 실링부재(10)의 작용에 대하여 상세히 설명한다.Hereinafter, the operation of the outlet sealing member 10 according to the present invention will be described in detail.

작업자는 본 발명에 따른 출선구 실링부재(10)를 머드건 노즐팁(6)의 선단부에 결합하는데, 이것은 실링부재 중앙 삽입부(16)가 머드건 노즐팁(6)의 내경 내부로 밀착 고정되고, 실링부재 외부 원주면(20)이 머드건 노즐팁(6)의 외주면을 감싸면서 밀착 고정되도록 하는 것이다.The operator couples the outlet sealing member 10 according to the present invention to the distal end of the mud gun nozzle tip 6, which is tightly fixed to the inner diameter of the mud gun nozzle tip 6 by the sealing member central insert 16. The outer circumferential surface 20 of the sealing member is to be tightly fixed while surrounding the outer circumferential surface of the mud gun nozzle tip 6.

이로써, 실링부재 내부면(14a, 14b, 14c)이 머드건 노즐팁(6)의 선단면(6a, 6b, 6c)에 직접적으로 고정된 상태가 된다.Thereby, the sealing member inner surface 14a, 14b, 14c becomes the state fixed directly to the front end surface 6a, 6b, 6c of the mud gun nozzle tip 6. As shown in FIG.

이와 같이 실링부재(10)가 머드건(5)에 결합된 상태에서 머드건(5)을 선회하면, 머드건(5)이 출선구(3)까지 도달하는 시간은 약 10초이내이고 용융물(2)과 접촉하는 시간은 약 2~3초인데, 머드건(5)의 순간 밀착 압력에 의해 실링부재(10)가 용융물(2)과 부딪치면서 출선구(3)과 밀착되게 된다.When the mud gun 5 is turned in the state in which the sealing member 10 is coupled to the mud gun 5, the time for the mud gun 5 to reach the outlet 3 is about 10 seconds or less and the melt ( 2) the contact time is about 2 to 3 seconds, the sealing member 10 is in close contact with the molten material (2) by the instantaneous close contact pressure of the mud gun (5).

따라서, 실링부재(10)는 머드건 노즐팁(6)과 출선구(3) 사이에 압착되어져 주위의 고열에 의해 카본화가 진행되면서 출선구 면(3a, 3b, 3c)상의 요철부위를 매워주는 역할을 하여 실링(sealing)을 이루게 된다.Therefore, the sealing member 10 is compressed between the mud gun nozzle tip 6 and the outlet port 3 to fill the uneven portion on the outlet surface (3a, 3b, 3c) while the carbonization proceeds by the high heat around Role to achieve sealing.

이와 같이 머드건(5)이 출선구(3)에 밀착되면 머드건 실린더(8)의 압력에 의해 실링부재(10)의 머드재 유도구멍(18)을 통해 머드재(7)가 출선구 구경(4)으로 밀려 들어가게 되고 시간이 경과할수록 머드재 유도구멍(18)이 점차 확대되어 정상적인 머드재(7) 봉입이 이루어지게 된다.When the mud gun 5 is in close contact with the outlet port 3 in this manner, the mud material 7 is opened through the mud material guide hole 18 of the sealing member 10 by the pressure of the mud gun cylinder 8. It is pushed into (4), and as time passes, the mud material guide hole 18 is gradually enlarged so that normal mud material 7 is sealed.

덧붙여, 도 4에 실링부재(10)가 고온에서 카본화되어 미세한 카본가루가 형성된 것을 확인할 수 있는 사진을 나타낸다.In addition, the photo which can confirm that the sealing member 10 was carbonized at high temperature and the fine carbon powder was formed is shown in FIG.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해, 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of the claims to be described below.

본 발명에 따르면, 출선구 폐쇄시 머드재의 유출을 방지할 수 있게 되어 용선 제조원가를 낮출 수 있고, 안정된 작업의 실현으로 생산성 향상을 꾀할 수 있는 효과가 있다.According to the present invention, it is possible to prevent the outflow of the mud material when closing the exit port can reduce the molten iron manufacturing cost, there is an effect that can improve the productivity by realizing a stable operation.

Claims (3)

고로(1) 출선구(3)를 머드건(5)을 이용한 머드재(7) 충입으로 폐쇄시키는데 있어서,In closing the blast furnace (1) outlet (3) by filling the mud material (7) using the mud gun (5), 불소 난연성 고무재질로, 머드건 노즐팁(6) 부분을 감싸고 끼워질 수 있는 후단부가 개방된 원통형태의 것으로,It is a fluorine flame-retardant rubber material, and has a cylindrical shape with a rear end open to surround and fit the mud gun nozzle tip 6, 상기 머드건 노즐팁(6)의 외경과 동일한 내경의 외부 원주면(20)과, 상기 외부 원주면(20)상에 코팅 구비되어 고열에 의한 카본화의 진행을 억제시키는 비석면층(22)과, 전단부 중앙에 구비되어 상기 머드건(5)으로부터 상기 머드재(7)를 출선구 구경(4)내로 유도하는 머드재 유도구멍(18)과, 상기 전단부 내부면의 중앙측에 상기 머드건 노즐팁(6)의 내경에 대응하는 외주면을 가지도록 구비되는 원통형 돌출부인 중앙 삽입부(16)를 일체로 구비하며, 상기 전단부 전면의 형상은 상기 출선구 면(3a, 3b, 3c)의 형상과 대응되고, 상기 전단부 내부면의 형상은 상기 머드건 노즐팁(6)의 선단면(6a, 6b, 6c)의 형상과 대응되며, 상기 머드재 유도구멍(18)을 중심으로 오목렌즈 형상의 전단면부가 형성되어 있는 구성으로,An outer circumferential surface 20 having an inner diameter equal to an outer diameter of the mud gun nozzle tip 6, a non-asbestos layer 22 provided with a coating on the outer circumferential surface 20 to suppress the progress of carbonization due to high heat; And a mud material guide hole (18) provided at the center of the front end portion to guide the mud material (7) from the mud gun (5) into the exit aperture (4), and the mud on the center side of the inner surface of the front end portion. The central inserting portion 16, which is a cylindrical protrusion provided to have an outer circumferential surface corresponding to the inner diameter of the gun nozzle tip 6, is integrally provided, and the shape of the front end of the front end portion is the outlet face 3a, 3b, 3c. The inner surface of the front end portion corresponds to the shape of the front end surfaces 6a, 6b, and 6c of the mud gun nozzle tip 6, and concave around the mud material guide hole 18. In the structure that the lens-shaped shear surface part is formed, 상기 출선구(3) 폐쇄시 상기 출선구 면(3a, 3b, 3c)과 밀착하는 상기 머드건 노즐팁(6)의 선단부에 장착되어, 상기 머드건 노즐팁(6)의 상기 머드재(7)를 침식시키지 않고 상기 출선구 면(3a, 3b, 3c)을 실링하여 상기 머드재(7)의 유출을 방지하는 것을 특징으로 하는 머드건 노즐팁 선단부에 부착되는 출선구 실링부재.The mud material 7 of the mud gun nozzle tip 6 is attached to the distal end of the mud gun nozzle tip 6 in close contact with the exit face 3a, 3b, and 3c when the outlet 3 is closed. Outlet port sealing member attached to the tip of the mud gun nozzle tip, characterized in that to prevent the outflow of the mud material (7) by sealing the outlet surface (3a, 3b, 3c) without eroding). 제 1항에 있어서,The method of claim 1, 상기 외부 원주면(20)과 중앙 삽입부(16)의 후단부측 끝단에는 각각 경사각이 가공되어 있어, 상기 머드건 노즐팁(6)으로의 장착을 용이하게 하는 것을 특징으로 하는 머드건 노즐팁 선단부에 부착되는 출선구 실링부재.The inclination angle is respectively machined at the rear end side end of the outer circumferential surface 20 and the central inserting portion 16 to facilitate mounting to the mud gun nozzle tip 6. Outlet sealing member attached to the tip. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 네오프렌 70%, 불소 성분 20%, 불소수지 10%인 불소 난연성 고무재질인 것을 특징으로 하는 머드건 노즐팁 선단부에 부착되는 출선구 실링부재.Outlet sealing member attached to the tip of the mud gun nozzle tip, characterized in that the fluorine flame-retardant rubber material of 70% neoprene, 20% fluorine component, 10% fluorine resin.
KR1020020070838A 2002-11-14 2002-11-14 Tap hole sealing member attached to mud gun nozzle tip and a composition thereof KR100901981B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108844697A (en) * 2018-07-11 2018-11-20 山东科瑞机械制造有限公司 A kind of double end mud gun pressure test tool
KR20200020038A (en) * 2018-08-16 2020-02-26 주식회사 포스코 Closing device and method for trapping hole of blast furnace

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100405905B1 (en) * 1999-12-15 2003-11-14 주식회사 포스코 A protection method of hearth wall brick using fluid injection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108844697A (en) * 2018-07-11 2018-11-20 山东科瑞机械制造有限公司 A kind of double end mud gun pressure test tool
CN108844697B (en) * 2018-07-11 2023-12-19 山东科瑞油气装备有限公司 Double-end mud gun pressure testing tool
KR20200020038A (en) * 2018-08-16 2020-02-26 주식회사 포스코 Closing device and method for trapping hole of blast furnace

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