KR20080076647A - Apparatus for of the tuyere of a blast furnace - Google Patents

Apparatus for of the tuyere of a blast furnace Download PDF

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Publication number
KR20080076647A
KR20080076647A KR1020070016845A KR20070016845A KR20080076647A KR 20080076647 A KR20080076647 A KR 20080076647A KR 1020070016845 A KR1020070016845 A KR 1020070016845A KR 20070016845 A KR20070016845 A KR 20070016845A KR 20080076647 A KR20080076647 A KR 20080076647A
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South Korea
Prior art keywords
tuyere
blast furnace
tape
container part
sealing member
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KR1020070016845A
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Korean (ko)
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KR100865676B1 (en
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정귀현
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정귀현
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/04—Blast furnaces with special refractories
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals

Abstract

A sealing device of tuyere of a blast furnace is provided to seek safety of operators, reduce operational time and cost, and secure operational easiness and efficiency by promptly crushing the tuyere when the blast furnace is not operated, making it not necessary to knead mud or inject the mud into the tuyere, and easily performing a crushing operation for opening the tuyere. A sealing device of tuyere of a blast furnace comprises a tapered container part of which a top portion has a large diameter, and of which a bottom portion has a small diameter, a through hole(120) formed in the center of the top portion of the container part, a projecting part(121) formed circumferentially on an inner portion of the container part, and a space part(130) formed in the container part. The container part has a ceramic tape(140), an insulating tape(150), or a double tape of the ceramic tape and the insulating tape selectively adhered to an outer face thereof.

Description

고로 풍구 밀봉부재{APPARATUS FOR OF THE TUYERE OF A BLAST FURNACE}Blast Furnace Seal Member {APPARATUS FOR OF THE TUYERE OF A BLAST FURNACE}

도 1 - 본 발명의 사시도.1-a perspective view of the present invention.

도 2 - 도 1의 A-A선 단면도.2-A sectional view along the line A-A in FIG.

도 3 - 본 발명의 사용상태 참고도.3-reference state of use of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

100: 본 발명 고로 풍구 밀봉부재(이하 '밀봉부재'라 함)100: the present invention blast furnace sealing member (hereinafter referred to as "sealing member")

110: 용기부 120: 통공(通孔)110: container portion 120: through hole

121: 돌출턱 130: 공간부121: protruding jaw 130: space

140: 세라믹 테이프 150: 단열 테이프 140: ceramic tape 150: insulating tape

B: 고로 C: 풍구B: Blast Furnace C: Blowhole

본 발명은 고로 풍구 밀봉부재에 관한 것으로, 더욱 상세하게는 풍구에서 공 급된 열풍이 역류되어 외부로 누설되면서 풍구가 손상되고 고로 내부의 용융물이 상기 틈을 통해 외부로 유출되는 사고를 방지하기 위한 고로 풍구 밀봉부재에 관한 것이다.The present invention relates to a blast furnace tuyere sealing member, and more particularly to a blast furnace for preventing the accident that the hot air is damaged and leaked to the outside through the gap as the hot air supplied from the tuyere flows back out leak It relates to a tuyere sealing member.

종래 제철소 등에서의 고로 조업은 고로 상부의 장입 장치로부터 철광석과 코크스(COKE)를 번갈아 층상으로 장입하고 고로 하부로부터는 열풍로에서 가열된 열풍을 풍구를 통해 송풍시킴으로써 고로 내부에서 철광석을 환원 및 용융시키는 공정을 의미하며, 이러한 고로 조업에 의하여 용융상태의 용선과 슬래그가 생성되어지는데, 대개 대형 고로의 경우 보통 34개의 풍구와 4개의 출선구를 보유하게 되고 대각선 방향으로 위치하는 2개의 출선구를 번갈아 가면서 개공시켜 고로 내의 용융물울 연속적으로 노 외로 배출시키게 된다.Blast furnace operation in a conventional steel mill, etc. to charge the iron ore and COKE alternately layered from the charging device on the top of the blast furnace and to reduce and melt the iron ore in the blast furnace by blowing the hot air heated in the hot blast furnace through the air vent from the bottom of the blast furnace. In the blast furnace operation, molten molten iron and slag are produced. In the case of large blast furnaces, it usually has 34 air vents and 4 outlets, and alternately two outlets alternately positioned diagonally. As it opens, the molten material in the blast furnace is continuously discharged out of the furnace.

한편, 상기와 같은 고로의 내구성을 강화하기 위한 정기적인 고로 내부의 보수작업시 또는 풍구 상에서 용손사고, 노 체 및 장입 설비의 고장시 긴급하게 풍구를 밀봉하게 되는데, 이때 풍구를 신속하게 밀봉(seaing)하지 않으면 외부공기가 고로 내부로 흡입되어 노내 열량이 부족하게 되고, 정비 작업시간이 길어질 경우에는 고로의 냉입 등 대형 사고로 이어질 수 있으므로 노내 코크스(Coke) 연소를 최대한 억제하여 노내 열량을 유지시켜 주는 것이 바람직하다. On the other hand, during regular maintenance work in the blast furnace to enhance the durability of the blast furnace, or in the case of a meltdown accident, failure of the furnace and charging equipment on the blast blast, the blast blast is urgently sealed at this time, sealing the blast quickly (seaing) If not, the outside air is sucked into the blast furnace and the calorific value of the furnace is insufficient, and if the maintenance work time is long, it can lead to large accidents such as cold cooling of the blast furnace. It is desirable to give.

또한 상기와 같이 돌발 풍구 밀봉작업중 외부에서 공기가 유입되면 고로 내의 고온에 의해 코크스광, 철광석이 풍구 주변으로 녹아내리게 되는데, 상기와 같은 용융물들이 연소되면서 발생된 슬러지가 블로우 파이프(BLOW PIPE)를 막거나 풍 구 선단부를 폐쇄하여 2차 설비사고의 위험은 물론 노내 열 균형을 무너뜨리는 폐단을 갖는 것이다.In addition, if air is introduced from the outside during the sudden blowhole sealing operation, coke or iron ore is melted around the blowhole by the high temperature in the blast furnace, and sludge generated as the melt is burned blocks the blow pipe. In other words, by closing the tip of the ventilator, there is a risk of secondary equipment accidents as well as a closed end that undermines the heat balance in the furnace.

따라서 상기와 같은 돌발 휴풍작업시에는 풍구를 신속하게 폐쇄하여 외부에서 유입되는 공기를 차단하여야 하는데, 종래에는 상기 돌발 휴풍작업은 풍구의 선단부에 작업자들이 수작업에 의해 옥토를 이기고 이를 조금씩 밀어넣어 풍구를 차단하는 방식에 의해 이루어지는 것이므로, 진흙형태의 내화물 분말, 즉 옥토를 이기는데 상당한 시간과 작업량을 필요로 할 뿐만 아니라, 이를 풍구 속으로 밀어넣어 풍구를 차단하는 작업은 상당한 전문성을 요구하고 힘든 작업이어서 작업자들이 이를 기피하며, 작업비용과 작업기간의 증가, 안전사고 발생가능성 등의 단점을 갖는다. Therefore, when the sudden break-up work as described above to close the airflow quickly to block the air flowing in from the outside, in the conventional breakaway work is the end of the windball by the manual operation by the workers to beat the clay by a little bit and push it down As it is made by the blocking method, it takes not only a considerable amount of time and work to beat the clay type refractory powder, that is, the clay, but it is also a very difficult and demanding task to push it into the tufts. Workers avoid this and have disadvantages such as increased work costs, longer working periods, and the possibility of safety accidents.

또한 상기한 방법에 의해 밀폐된 옥토는 풍구의 개방을 위해서 다시 깨뜨려야만 하는데 상기 풍구는 약 300mm 정도의 두께로 차단되고 또한 고열에 의해 소성된 상태여서 이를 다시 깨는 것도 용이한 일이 아니다. 상기 옥토 파쇄작업을 위해 작업자는 1200℃ 이상의 높은 열풍에 직접 노출된 상태에서 찌름봉 등을 이용하여 수작업으로 파쇄할 수밖에 없는 단점을 갖는 것이다. In addition, the octopus sealed by the above method must be broken again for opening of the tuyere. The tuyere is cut to a thickness of about 300 mm and is fired by high heat, so it is not easy to break it again. For the octopus crushing operation, the worker has a disadvantage that can be manually crushed using a stick, such as in the state directly exposed to high hot air of 1200 ℃ or more.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 창안된 것으로, 휴풍 작업시 풍구를 신속하게 폐쇄할 수 있도록 할 뿐만 아니라, 옥토를 이기거나 풍구 속으로 밀어넣는 등의 힘들고 오랜 시간을 소요하는 작업을 하지 않아도 되 며, 또한 풍구의 개방을 위한 파쇄도 용이하게 함으로써 작업자들의 안전을 도모하고, 작업시간의 단축 및 비용의 절감, 작업의 용이성 및 효율성 등을 확보할 수 있도록 하는 고로 풍구 밀봉부재를 제공하기 위한 것이다.Therefore, the present invention was devised to solve the above problems, not only to close the tuyere quickly during the idle work, but also to take time-consuming tasks such as winning the clay or pushing it into the tuyere. In addition, the blast furnace sealing member is provided to facilitate the safety of workers by reducing the opening for the opening of the tuyere, to shorten the working time and reduce the cost, and to ensure the ease and efficiency of the work. It is to.

첨부한 도면에 의해 본 발명을 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings.

본 발명 고로 풍구 밀봉부재(100)의 구성은 도 1에 도시한 바와 같이, 상부의 직경은 크고 하부의 직경은 작은 테이퍼(taper)형상의 용기부(110)와 상기 용기부(110)의 상부에는 중앙에 통공(120)을 구비하고 안쪽으로 빙둘러서 돌출턱(121)이 형성되고, 내부에는 공간부(130)가 형성되는 구조를 갖는다.As shown in FIG. 1, the configuration of the blast furnace sealing member 100 according to the present invention is a taper-shaped container part 110 having a large upper diameter and a smaller lower diameter, and an upper portion of the container portion 110. There is a through-hole 120 in the center and is formed in a protruding jaw 121 is formed around the inside, the space portion 130 is formed inside.

상기 용기부(110)의 형상이 깔때기형상을 갖는 이유는 풍구(C)의 내경이 테이퍼형상이기 때문이고, 풍구의 선단부에 용기부(110)를 삽입하기 용이하기 때문이다.The reason why the shape of the container 110 has a funnel shape is because the inner diameter of the tuyere C is tapered, and the container 110 is easily inserted into the tip of the tuyere.

따라서 본 발명 고로 풍구 밀봉부재(100)는 풍구의 후단부에서 선단부까지 밀어넣기만 하면 풍구가 밀봉되는 구조를 가지게 되며, 이로 인해 고로(B)의 풍구 밀봉작업이 매우 용이해지고, 신속해진다.Therefore, the present invention blast furnace tuyere sealing member 100 has a structure in which the tuyere is sealed just by pushing from the rear end of the tuyere to the front end portion, and thus the tuyere sealing operation of the blast furnace (B) becomes very easy and rapid.

또한 본 발명 고로 풍구 밀봉부재(100)는 상기 용기부(110)의 외측면에 세라믹 테이프(140) 또는 단열 테이프(150), 또는 세라믹과 단열 이중테이프를 부착하도록 구성할 수도 있다.In addition, the present invention blast furnace sealing member 100 may be configured to attach a ceramic tape 140 or a heat insulating tape 150, or a ceramic and a heat insulating double tape on the outer surface of the container portion 110.

이는 풍구의 내측면과 본 발명 고로 풍구 밀봉부재(100) 외측면 사이의 밀봉력을 높이기 위한 구성으로, 상기 세라믹 테이프(140)는 고순도의 세라믹 섬유에 유,무기 바인더를 첨가하여 부착 가능하게 테이프 상태로 만든 것이고, 단열 테이프(150)는 내열성이 강하고 공업용 및 보온 닥트용, 선박용 등 특수한 용도로 폭넓게 쓰이는 테이프를 사용한다. 이처럼 본 발명 고로 풍구 밀봉부재(100)는 상기 테이프(140,150)들의 신축성에 의해 풍구의 내측면과 본 발명 고로 풍구 밀봉부재(100) 외측면 사이의 틈새를 최소화할 수 있으며, 이로 인해 밀봉효과가 더욱 우수해진다. 또한 내화재로만 제조된 용기부는 매우 취약한 재질이어서 파손이 잘되는 단점을 갖는 것이나, 약간의 쿠션 성질을 가지고 있으며, 질긴 재질의 단열테이프 또는 세라믹 테이프에 의해 외측면이 감싸진 구조를 갖는 것이어서 파손의 우려를 최소화할 수 있으며, 또한 내화재로만 제조된 용기부의 부족한 단열효과를 최대화할 수 있는 것이다.This is a configuration for increasing the sealing force between the inner surface of the tuyere and the outer surface of the blast furnace sealing member 100 of the present invention, the ceramic tape 140 is attached to the high purity ceramic fiber by adding an organic and inorganic binder tape The heat-insulating tape 150 is made in a state, and the heat-resistant tape 150 is a tape that is widely used for special purposes such as industrial use, thermal insulation ducts, and ships. As described above, the blast furnace tuyere sealing member 100 of the present invention may minimize the gap between the inner surface of the tuyere and the outer surface of the blast furnace tuyere sealing member 100 by the elasticity of the tapes 140 and 150, and thus the sealing effect may be reduced. Even better. In addition, the container part made of only fireproof material has a disadvantage of being easily broken because it is a very weak material, but has a slight cushioning property, and has a structure surrounded by an insulating tape or ceramic tape of tough material so that there is no fear of damage. It is possible to minimize, and also to maximize the insufficient insulation effect of the container portion made of only refractory material.

또한 본 발명 고로 풍구 밀봉부재(100)에 형성된 통공(120)은 상기 고로 풍구 밀봉부재(100)를 풍구(C)의 선단부에 밀어넣기 위한 설치도구의 삽입을 가능하게 하는 구성으로, 이때 통공(120) 외측으로 빙둘러서 돌출되도록 형성된 돌출턱(121) 역시 설치도구와 고로 풍구 밀봉부재(100)의 결합을 보다 용이하게 하기 위한 구성이다. In addition, the through-hole 120 formed in the blast furnace tuyere sealing member 100 is configured to allow the insertion of the installation tool for pushing the blast furnace tuyere sealing member 100 to the tip of the tuyere (C), the through-hole ( 120) The protruding jaw 121 formed to protrude around the outside is also configured to facilitate the coupling between the installation tool and the blast furnace sealing member 100.

또 상기 고로 풍구 밀봉부재(100)의 내부에 공간부(130)를 형성한 이유는 용기부(11)의 두께를 줄여서 풍구의 개방을 위한 파쇄를 용이하게 하기 위한 구성이다.In addition, the reason why the space portion 130 is formed inside the blast furnace sealing member 100 is to reduce the thickness of the container portion 11 to facilitate crushing for opening of the balloon.

이처럼 본 발명은 휴풍 작업시 풍구를 신속하게 폐쇄할 수 있도록 할 뿐만 아니라, 풍구의 안쪽 선단부 직경에 맞춰 미리 밀봉부재를 제작해 놓고 작업시 이를 풍구에 밀어넣기만 하면 풍구가 폐쇄되는 구조여서 작업이 신속하고 용이한 효과를 갖는다.As such, the present invention not only enables the closing of the tuyere quickly during the idle work, but also to prepare the sealing member according to the diameter of the inner end of the tuyere in advance and simply push it into the tuyere during the work so that the tuyere is closed. Has a quick and easy effect.

또한 본 발명은 내부에 공간부를 형성하여 용기부의 두께를 줄이므로써 풍구의 개방을 위한 파쇄가 매우 용이해져 작업자들의 안전을 도모할 수 있고, 파쇄작업시간의 단축 및 비용의 절감 등이 가능한 효과를 갖는다.In addition, the present invention by forming a space in the interior to reduce the thickness of the container part is very easy to crush for opening the air openings to facilitate the safety of workers, it is possible to reduce the time for crushing work and to reduce the cost Have

또 본 발명은 단열테이프 또는 세라믹 테이프로 용기부의 외측면을 감싸 파손을 방지하고, 풍구의 내측면과 밀봉부재 외측면 사이의 틈새를 최소화할 수 있으며, 보다 나은 단열을 가능하게 하는 매우 유용한 발명인 것이다.In another aspect, the present invention is to wrap the outer surface of the container with a heat insulating tape or ceramic tape to prevent breakage, to minimize the gap between the inner surface of the tuyere and the outer surface of the sealing member, it is a very useful invention to enable better heat insulation. .

Claims (2)

상부의 직경은 크고 하부의 직경은 작은 테이퍼형상의 용기부와, 상기 용기부의 상부에는 중앙에 통공을 구비하고 안쪽으로 빙둘러서 돌출턱이 형성되고, 내부에는 공간부가 형성되도록 구성되어짐을 특징으로 하는 고로 풍구 밀봉부재.A tapered container portion having a large upper diameter and a smaller diameter lower portion, and having a through-hole at the center of the container portion and a protruding jaw formed in an inner direction, is formed to have a space portion formed therein. Blast furnace sealing member. 제 1항에 있어서 상기 용기부의 외측면에 세라믹 테이프, 단열 테이프, 세라믹과 단열 이중테이프 중 어느 하나를 선택적으로 부착함을 특징으로 하는 고로 풍구 밀봉부재.The blast furnace sealing member according to claim 1, wherein any one of a ceramic tape, a heat insulating tape, a ceramic and a heat insulating double tape is selectively attached to an outer surface of the container portion.
KR1020070016845A 2007-02-16 2007-02-16 Apparatus for of the tuyere of a blast furnace KR100865676B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110628975A (en) * 2019-09-11 2019-12-31 大冶特殊钢有限公司 Tuyere ceramic sleeve for blast furnace ironmaking

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KR100524611B1 (en) * 2003-03-21 2005-11-01 주식회사 포스코 Tuyere nozzle having a function of erosion confirmation and impact absorption

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110628975A (en) * 2019-09-11 2019-12-31 大冶特殊钢有限公司 Tuyere ceramic sleeve for blast furnace ironmaking

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