KR20000018776U - A device for melting solidification layer of skimmer - Google Patents

A device for melting solidification layer of skimmer Download PDF

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Publication number
KR20000018776U
KR20000018776U KR2019990004971U KR19990004971U KR20000018776U KR 20000018776 U KR20000018776 U KR 20000018776U KR 2019990004971 U KR2019990004971 U KR 2019990004971U KR 19990004971 U KR19990004971 U KR 19990004971U KR 20000018776 U KR20000018776 U KR 20000018776U
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South Korea
Prior art keywords
cylinder
skimmer
cooling water
swing
support plates
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KR2019990004971U
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Korean (ko)
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KR200304392Y1 (en
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홍순팔
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이구택
포항종합제철 주식회사
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Priority to KR20-1999-0004971U priority Critical patent/KR200304392Y1/en
Publication of KR20000018776U publication Critical patent/KR20000018776U/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
    • F27D3/15Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545Equipment for removing or retaining slag
    • F27D3/1554Equipment for removing or retaining slag for removing the slag from the surface of the melt
    • F27D3/1563Equipment for removing or retaining slag for removing the slag from the surface of the melt by the use of scrapers

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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)
  • Furnace Details (AREA)

Abstract

본 고안은 스키머(Skimmer)의 응고층 용해장치에 관한 것으로, 특히 대탕도(12)의 일측편에 고정 설치되면서 그 전면에 지지판(18,19)이 상하 이격되도록 부착되는 지지프레임(1)과; 상기 지지판(18,19)에 각각 선회모터(24)에 의해 선회되도록 결합되고, 그 선단에 실린더(20)가 고정 부착되는 선회붐(23-1,23-2)과; 상기 실린더(20)의 로드(20-1) 하단에 결합되면서 그 냉각수로(22-1)에 급배수관(5-1,5-2)이 연결되는 굴착팁(22)과; 상기 실린더(20)에 고정되는 실린더(31)에 의해 상하강되고, 제어변(33)에 의해 개폐되도록 설치되는 산소토오치관(29)과; 상기 선회모터(24)와 실린더(20)를 제어하면서 상기 배수관(5-2)의 온도계(27-2)로부터 전송받은 냉각수의 온도에 따라 상기 실린더(31)와 제어변(33)을 제어하도록 설치되는 제어부(23)로 구성되는 것을 특징으로 하는 스키머의 응고층 용해장치에 관한 것이다.The present invention relates to a solidified layer dissolving device of a skimmer, and in particular, the support frame (1) is fixed to one side of the large bath (12) and the support plates (18, 19) attached to the front and spaced apart ; Swing booms 23-1 and 23-2 coupled to the support plates 18 and 19 so as to be pivoted by the swing motors 24, and the cylinder 20 is fixedly attached to the support plates 18 and 19; An excavation tip 22 coupled to the lower end of the rod 20-1 of the cylinder 20 and having a supply and drain pipe 5-1 and 5-2 connected to the cooling water path 22-1; An oxygen torch tube (29) mounted up and down by a cylinder (31) fixed to the cylinder (20) and installed to be opened and closed by a control valve (33); While controlling the swing motor 24 and the cylinder 20 to control the cylinder 31 and the control valve 33 in accordance with the temperature of the cooling water received from the thermometer 27-2 of the drain pipe 5-2. It relates to a solidified layer dissolving device of a skimmer, characterized in that the control unit 23 is provided.

Description

스키머의 응고층 용해장치{A DEVICE FOR MELTING SOLIDIFICATION LAYER OF SKIMMER}Solidified layer melting apparatus of skimmer {A DEVICE FOR MELTING SOLIDIFICATION LAYER OF SKIMMER}

본 고안은 스키머(Skimmer)의 응고층 용해장치에 관한 것으로, 특히 고로에서 출선되어 대탕도를 흐르는 용융물을 용선과 슬래그로 분리하는 스키머에 용융물이 냉각되면서 응고층을 형성하게 되는데, 이때 이 응고층을 출선작업전에 자동 용해하는 스키머(Skimmer)의 응고층 용해장치에 관한 것이다.The present invention relates to a solidification layer dissolving device of a skimmer, and in particular, a solidified layer is formed while the melt is cooled in a skimmer that separates the melt flowing out of the blast furnace and flows into the molten iron and slag. It relates to a solidified layer dissolving device of the skimmer (Skimmer) that automatically dissolves before the starting operation.

일반적으로, 도1에 도시한 바와같이 고로(10)내에서 환원 용융된 용융물은 개공된 출선구(11)로 출선된 후, 대탕도(12)를 통해 배출되고, 다시 스키머(Skimmer)(9)에서 비중차에 의한 용선과 슬래그로 분리된다.In general, as shown in FIG. 1, the molten melt reduced in the blast furnace 10 is discharged through the open opening 11 and then discharged through the large water supply 12, and again a skimmer 9. ) Is separated into molten iron and slag due to specific gravity difference.

그리고, 용선은 지탕도(Iron Runner)(13)를 거쳐서 경주통(15)에 도착하여 용선차(16)에 수선되고, 슬래그는 배재구(6)를 통해 재탕도(Slag Runner)(7)로 배출되어 괴재처리조 또는 드라이피트에 유입된 후 공급트랩을 통한 살수에 의해 냉각처리되어 고체화된 괴재로 처리된다.Then, the charterer arrives at the raceway 15 through the Iron Runner 13 and is repaired by the charterer 16. The slag is reruned by the slag runner 7. After being discharged into the aggregate treatment tank or the dry pit, it is cooled by spraying through a feed trap and treated as a solidified aggregate.

이때, 스키머(9)에서 분리되는 용선과 슬래그의 냉각을 방지하기 위하여 스키머의 상부로부터 왕겨를 투입 연소시켜 보온을 유지하게 되나, 보온상태가 불량할 경우 스키머와 접촉하는 잔류용선과 슬래그가 냉각되면서 응고층(3)을 형성하면서 스키머에 부착된다.At this time, in order to prevent cooling of the molten iron and slag separated from the skimmer (9) by putting the chaff from the top of the skimmer to keep warm, but if the warm state is poor, the residual molten iron and slag in contact with the skimmer is cooled It is attached to the skimmer while forming the coagulation layer 3.

여기서, 스키머(9)에 응고층(3)이 형성될 경우 용선이 지탕도(13)로 배출되지 못하고 배재구(6)를 통해 슬래그와 함께 배출되면서 재탕도(7)와 이어지는 수재처리설비에서 대형 폭발사고를 유발하게 된다.Here, when the coagulation layer 3 is formed on the skimmer 9, the molten iron is not discharged to the scrubber 13 but is discharged together with the slag through the discharge hole 6 in the reprocessing water 7 and the water treatment equipment that is connected thereto. It will cause a big explosion.

그리고, 출선작업전 작업자가 직접 치공구를 이용하여 스키머(9)의 응고층(3)존재여부를 확인하게 되고, 응고층에 의해 스키머가 막혀있을 경우 치공구와 해머 또는 산소용접기 등으로 응고층을 제거하게 된다.Then, the worker checks the presence of the solidified layer 3 of the skimmer 9 by using the tool directly before the starting work. If the skimmer is blocked by the solidified layer, the solidified layer is removed by the tool and the hammer or the oxygen welding machine. Done.

이때, 이러한 일련의 수작업은 작업자가 대탕도(12)의 고열과 가스분진에 그대로 노출되어 안전사고의 위험이 있고, 작업의 부하를 현저히 과중시키게 된다.At this time, the series of manual work is exposed to the high temperature and gas dust of the large water supply 12 as it is, there is a risk of a safety accident, significantly increasing the load of the work.

본 고안은 스키머의 응고층을 출선작업전에 자동 용해제거함으로써 스키머의 슬래그 분리 효율을 높이고, 작업의 생산성을 높일 수 있으며, 안전사고를 예방하는 스키머(Skimmer)의 응고층 용해장치를 제공함에 그 목적이 있다.The present invention improves slag separation efficiency of the skimmer, improves the productivity of the skimmer by automatically dissolving the solidified layer of the skimmer before starting work, and provides a solidified layer melter of the skimmer to prevent safety accidents. There is this.

도1은 고로의 출선설비를 나타내는 구성도,1 is a configuration diagram showing the tapping equipment of the blast furnace;

도2는 본 고안에 따른 스키머의 응고층 용해장치를 나타내는 사시도,Figure 2 is a perspective view showing a solidified layer dissolving device of the skimmer according to the present invention,

도3은 본 고안에 따른 스키머의 응고층 용해장치의 작동상태를 나타내는 상태도이다.Figure 3 is a state diagram showing the operating state of the solidified layer dissolving device of the skimmer according to the present invention.

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

4: 탕도커버 4-1: 작업구 8: 풍구 10: 고로 11: 출선구 12: 대탕도4: Tangdo Cover 4-1: Work Area 8: Punggu 10: Blast Furnace 11: Outlet 12: Daetangdo

상기한 목적을 달성하기 위하여 본 고안은 대탕도의 일측편에 고정 설치되면서 그 전면에 지지판이 상하 이격되도록 부착되는 지지프레임과; 상기 지지판에 각각 선회모터에 의해 선회되도록 결합되고, 그 선단에 실린더가 고정 부착되는 선회붐과; 상기 실린더의 로드 하단에 결합되면서 그 냉각수로에 급배수관이 연결되는 굴착팁과; 상기 실린더에 고정되는 실린더에 의해 상하강되고, 제어변에 의해 개폐되도록 설치되는 산소토오치관과; 상기 선회모터와 실린더를 제어하면서 상기 배수관의 온도계로부터 전송받은 냉각수의 온도에 따라 상기 실린더와 제어변을 제어하도록 설치되는 제어부로 구성되는 것을 특징으로 하는 스키머의 응고층 용해장치를 제공한다.In order to achieve the above object, the present invention is fixed to one side of the main entrance and the support frame is attached to the front and the support plate spaced apart up and down; A swing boom coupled to the support plate so as to be pivoted by a swing motor, and the cylinder being fixedly attached to the front end thereof; An excavation tip coupled to a lower end of the cylinder and connected to a supply / drain pipe to the cooling water passage; An oxygen torch tube installed up and down by a cylinder fixed to the cylinder and installed to be opened and closed by a control valve; It provides a solidified bed dissolving device of the skimmer, characterized in that the control unit is configured to control the cylinder and the control valve in accordance with the temperature of the cooling water received from the thermometer of the drain pipe while controlling the swing motor and the cylinder.

도면을 참조하여 본 고안의 구성을 설명한다.The configuration of the present invention will be described with reference to the drawings.

도2는 본 고안에 따른 스키머의 응고층 용해장치를 나타내는 사시도이고, 도3은 본 고안에 따른 스키머의 응고층 용해장치의 작동상태를 나타내는 상태도이다.Figure 2 is a perspective view showing a solidified layer dissolving device of the skimmer according to the present invention, Figure 3 is a state diagram showing the operating state of the solidified layer dissolving device of the skimmer according to the present invention.

대탕도(12)의 일측편에 지지베이스(1)가 수직으로 고정 설치되어 있고, 한쌍으로 이루어지는 지지판(18,19)이 지지베이스(1)의 전면에 상하 이격되도록 볼트에 의해 고정되어 있다.A support base 1 is vertically fixed to one side of the large bath 12, and a pair of support plates 18 and 19 are fixed to the front surface of the support base 1 by bolts so as to be spaced up and down.

이때, 지지판(18,19)에는 각각 선회붐(23-1,23-2)이 회전 가능하도록 결합되어 있고, 특히 상부선회붐(23-1)에는 제어부(23)에 의해 제어되는 선회모터(24)가 연결되어 있다.At this time, the swinging booms 23-1 and 23-2 are coupled to the support plates 18 and 19 so as to be rotatable, and the swinging motors controlled by the control unit 23 are particularly connected to the upper swinging boom 23-1. 24) is connected.

여기서, 상부지지판(18)의 일측편과 하부지지판(19)의 타측편에 각각 근접센서(25-1,25-2)가 부착되어 있어 지지판의 선회범위를 제어하게 된다.Here, proximity sensors 25-1 and 25-2 are attached to one side of the upper support plate 18 and the other side of the lower support plate 19 to control the turning range of the support plate.

그리고, 선회붐(23-1,23-2)의 선단에는 제어부(23)에 의해 제어되는 실린더(20)가 부착되어 있고, 이 실린더(20)의 로드(20-1) 하단에는 원추형의 굴착팁(22)이 고정 설치되어 있다.And the cylinder 20 controlled by the control part 23 is attached to the front-end | tip of the turning boom 23-1, 23-2, and conical drilling is provided in the lower end of the rod 20-1 of this cylinder 20. The tip 22 is fixed.

이때, 실린더(20)의 로드(20-1)는 풀스트로크(Full Stroke)방식으로 완전 전진될 경우 대탕도(4)의 작업구(4-1)를 지나 굴착팁(22)에 의해 스키머(9)의 응고층(3)을 관통하게 되고, 완전 후진될 경우 대탕도의 작업구로부터 빠져나오게 된다.At this time, when the rod 20-1 of the cylinder 20 is fully advanced in the full stroke method, the skimmer (eg, the drill 20) passes through the work tool 4-1 of the large bath 4. It penetrates the solidification layer 3 of 9), and when it is completely retracted, it exits from the work zone of the large bath.

여기서, 굴착팁(22)에는 내측을 따라 냉각수로(22-1)가 형성되어 있고, 이 냉각수로(22-1)에 각각 냉각수공급배관(5-1)과 냉각수배수배관(5-2)이 연결되어 있으며, 이 냉각수로를 따라 흐르는 냉각수는 응고층(3)의 고열에 의해 가열되는 굴착팁(22)의 표면을 냉각시키게 된다.Here, the excavation tip 22 is formed with a cooling water passage 22-1 along the inner side, and the cooling water supply pipe 5-1 and the cooling water drain piping 5-2 in the cooling water passage 22-1, respectively. The cooling water flowing along the cooling water passage cools the surface of the drilling tip 22 heated by the high heat of the solidification layer 3.

또한, 냉각수공급배관(5-1)과 냉각수배수배관(5-2)에는 각각 자동변(25-1,25-2)과 유량계(26-1,26-2), 온도계(27-1,27-2)가 각각 설치되어 있다.In addition, the cooling water supply pipe 5-1 and the cooling water drain pipe 5-2 have automatic valves 25-1, 25-2, flow meters 26-1, 26-2, thermometers 27-1, 27-2) are provided respectively.

한편, 고정대(28)에 의해 실린더(20)에 고정 부착되는 실린더(31)에는 가이드관(30)이 고정되어 있고, 그 로드(31-1)에 고정대(29-1)가 장착되어 있으며, 이 고정대(29-1)의 선단에 각각 홀더(17)가 설치되어 있다.On the other hand, the guide tube 30 is fixed to the cylinder 31 fixedly attached to the cylinder 20 by the fixing stand 28, and the fixing stand 29-1 is attached to the rod 31-1. Holder 17 is provided in the front-end | tip of this fixing stand 29-1, respectively.

이때, 실린더(31)의 로드(31-1)는 실린더(20)와 같이 풀스트로크(Full Stroke)방식으로 작동되고, 제어변(33)에 의해 개폐되는 토오치관(29)는 가이드관(30)을 따라 상하이동되면서 그 하단부가 홀더(17)에 조임볼트에 의해 고정되어 있다.At this time, the rod 31-1 of the cylinder 31 is operated in a full stroke manner like the cylinder 20, and the torch tube 29 opened and closed by the control valve 33 is a guide tube ( While moving along 30), its lower end is fixed to the holder 17 by a fastening bolt.

이하, 본 고안의 작용을 설명한다.Hereinafter, the operation of the present invention.

개공기(미도시)에 의해 고로(10)의 출선구(11)가 개공되기 전에 제어부(23)에서 선회모터(24)를 구동시키게 되면 상하부선회붐(1,2)이 회전되고, 상부선회붐(1)이 리밋스위치(25-1)로부터 떨어지면서 하부선회붐(2)이 리밋스위치(25-2)에 닿게 되면 제어부(23)에서 이를 수신하여 선회모터(24)의 구동을 정지시키게 된다.When the turning motor 24 is driven by the controller 23 before the outlet 11 of the blast furnace 10 is opened by an opening machine (not shown), the upper and lower turning booms 1 and 2 rotate, and the upper turning portion is turned. When the boom 1 falls from the limit switch 25-1 and the lower swing boom 2 touches the limit switch 25-2, the control unit 23 receives this to stop driving of the swing motor 24. do.

이때, 굴착팀(22)은 탕도커버(4)의 작업구(4-1) 상부에 위치하게 되고, 제어부(23)에서 실린더(20)를 전진 작동시켜 그 로드(20-1)를 하강시키게 되면 굴착팁(22)이 스키머(9)에 부착된 응고층(3)을 눌러주게 되며, 냉각수로(22-1)를 흐르는 냉각수의 온도가 배수관(5-2)을 통해 배수온도계(27-2)에 의해 측정된다.At this time, the excavation team 22 is located above the work opening 4-1 of the ballway cover 4, the control unit 23 to move the cylinder 20 forward to lower the rod 20-1. When the excavation tip 22 presses the coagulation layer 3 attached to the skimmer 9, the temperature of the cooling water flowing through the cooling water passage 22-1 is drained through the drain pipe 5-2. Is measured by -2).

여기서, 굴착팀(22)의 선단부가 응고층(3)을 굴착하면서 응고층의 고열에 노출되고, 이에 따라 냉각수로(22-1)를 흐르는 냉각수가 가열되면서 배수관(5-2)을 통해 배출된다.Here, the tip end of the excavation team 22 is exposed to the high heat of the solidification layer while excavating the solidification layer 3, and thus the cooling water flowing through the cooling water passage 22-1 is heated and discharged through the drain pipe 5-2. do.

그리고, 배수온도계(27-2)에 의해 측정되는 냉각수의 온도가 설정온도 이상인 경우 출선되는 용융물에 의해 응고층(3)이 용해될 수 있는 판단하여 별도의 용해작업없이 제어부(23)에서는 실린더(20)의 로드(20-1)를 상승시킨 후, 다시 선회모터(24)를 작동시켜 선회붐(1,2)을 원위치시키게 된다.Then, when the temperature of the cooling water measured by the drain thermometer 27-2 is equal to or higher than the set temperature, it is determined that the solidified layer 3 may be melted by the melt that is drawn out. After raising the rod 20-1 of 20, the swing motor 24 is operated again to return the swing booms 1 and 2 to their original positions.

그러나, 배수온도계(27-2)에 의해 측정되는 냉각수의 온도가 설정온도 이하인 경우 출선되는 용융물에 의해 응고층(3)이 용해될 수 없는 것으로 판단하여 별도의 용해작업을 위해 제어부(23)에서 실린더(31)를 작동시켜 로드(31-1)를 하강시키게 되고, 이에 따라 토오치관(29)의 선단이 응고층(3)에 근접하게 된다.However, when the temperature of the cooling water measured by the drain thermometer 27-2 is lower than or equal to the set temperature, it is determined that the solidified layer 3 cannot be dissolved by the melt that is drawn out, The cylinder 31 is operated to lower the rod 31-1 so that the tip of the torch tube 29 approaches the solidification layer 3.

또한, 제어부(23)에서 제어변(33)을 개방하게 되면 토오치관(29)을 통해 산소가 분사되고, 아울러 분사되는 산소가 응고층(3)의 열에 의헤 발화되면서 응고층을 용해시키게 된다.In addition, when the control valve 33 opens the control valve 33, oxygen is injected through the torch tube 29, and the injected oxygen is ignited by the heat of the coagulation layer 3 to dissolve the coagulation layer. .

이때, 응고층(3)이 토오치관(29)의 불꽃에 의해 용해되면서 굴착팁(22)의 냉각수로(22-1)를 흐르는 냉각수를 가열시키게 되고, 배수온도계(27-1)에서 측정되는 냉각수의 온도가 설정온도 이상이 되면 제어부(23)에서는 제어변(33)을 폐쇄하면서 실린더(31)의 로드(31-1)를 상승시키어 토오치관(29)을 원위치하게 된다.At this time, while the coagulation layer 3 is dissolved by the flame of the torch tube 29, the cooling water flowing through the cooling water passage 22-1 of the drilling tip 22 is heated, and measured by the drainage thermometer 27-1. When the temperature of the cooling water becomes higher than the set temperature, the control unit 23 raises the rod 31-1 of the cylinder 31 while closing the control valve 33 to return the torch tube 29 to its original position.

그리고, 제어부(23)에서는 다시 실린더(20)의 로드(20-1)를 상승시키어 굴착팁(22)을 작업구(4-1)를 통해 상승시키게 되고, 선회모터(24)를 작동시켜 선회붐(1,2)을 원위치시키게 되며, 상부선회붐(1)이 리밋스위치(25-1)에 터치되면 이를 수신하여 선회모터(24)의 작동을 정지시키게 된다.In addition, the control unit 23 raises the rod 20-1 of the cylinder 20 again to raise the excavation tip 22 through the work tool 4-1, and operates the turning motor 24 to turn. The booms 1 and 2 are returned to their original positions, and when the upper swing boom 1 is touched by the limit switch 25-1, the booms 1 and 2 are received to stop the operation of the swing motor 24.

또한, 상기와 같이 스키머(9)의 응고층(3)이 용해되면 개공기에 의해 출선구(11)가 개공되어 출선작업이 실시된다.In addition, when the coagulation layer 3 of the skimmer 9 is melt | dissolved as mentioned above, the tap opening 11 is opened by an opening machine, and a taping work is performed.

본 고안은 스키머의 응고층을 출선작업전에 자동 용해제거함으로써 스키머의 슬래그 분리 효율을 높이고, 작업의 생산성을 높일 수 있으며, 안전사고를 예방하는 효과를 제공하게 된다.The present invention improves the slag separation efficiency of the skimmer, increases the productivity of the work by automatically dissolving the solidified layer of the skimmer before starting the work, and provides the effect of preventing safety accidents.

Claims (1)

대탕도(12)의 일측편에 고정 설치되면서 그 전면에 지지판(18,19)이 상하 이격되도록 부착되는 지지프레임(1)과;A support frame (1) fixedly installed on one side of the large bathway (12) and attached to the front of the support plate (18, 19) so as to be spaced up and down; 상기 지지판(18,19)에 각각 선회모터(24)에 의해 선회되도록 결합되고, 그 선단에 실린더(20)가 고정 부착되는 선회붐(23-1,23-2)과;Swing booms 23-1 and 23-2 coupled to the support plates 18 and 19 so as to be pivoted by the swing motors 24, and the cylinder 20 is fixedly attached to the support plates 18 and 19; 상기 실린더(20)의 로드(20-1) 하단에 결합되면서 그 냉각수로(22-1)에 급배수관(5-1,5-2)이 연결되는 굴착팁(22)과;An excavation tip 22 coupled to the lower end of the rod 20-1 of the cylinder 20 and having a supply and drain pipe 5-1 and 5-2 connected to the cooling water path 22-1; 상기 실린더(20)에 고정되는 실린더(31)에 의해 상하강되고, 제어변(33)에 의해 개폐되도록 설치되는 산소토오치관(29)과;An oxygen torch tube (29) mounted up and down by a cylinder (31) fixed to the cylinder (20) and installed to be opened and closed by a control valve (33); 상기 선회모터(24)와 실린더(20)를 제어하면서 상기 배수관(5-2)의 온도계(27-2)로부터 전송받은 냉각수의 온도에 따라 상기 실린더(31)와 제어변(33)을 제어하도록 설치되는 제어부(23)로 구성되는 것을 특징으로 하는 스키머의 응고층 용해장치.While controlling the swing motor 24 and the cylinder 20 to control the cylinder 31 and the control valve 33 in accordance with the temperature of the cooling water received from the thermometer 27-2 of the drain pipe 5-2. Solidified layer dissolving device of the skimmer, characterized in that consisting of a control unit 23 is installed.
KR20-1999-0004971U 1999-03-27 1999-03-27 A device for melting solidification layer of skimmer KR200304392Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030030263A (en) * 2001-10-09 2003-04-18 주식회사 포스코 A cleaning device of melted iron path for furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030030263A (en) * 2001-10-09 2003-04-18 주식회사 포스코 A cleaning device of melted iron path for furnace

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