KR20000010807U - Slag cutting device of converter - Google Patents

Slag cutting device of converter Download PDF

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Publication number
KR20000010807U
KR20000010807U KR2019980023223U KR19980023223U KR20000010807U KR 20000010807 U KR20000010807 U KR 20000010807U KR 2019980023223 U KR2019980023223 U KR 2019980023223U KR 19980023223 U KR19980023223 U KR 19980023223U KR 20000010807 U KR20000010807 U KR 20000010807U
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KR
South Korea
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slag
converter
cutting device
induction pipe
operation link
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KR2019980023223U
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Korean (ko)
Inventor
김해원
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이구택
포항종합제철 주식회사
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Priority to KR2019980023223U priority Critical patent/KR20000010807U/en
Publication of KR20000010807U publication Critical patent/KR20000010807U/en

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Abstract

본 고안은 전로의 슬래그커팅(Slag Cutting)장치에 관한 것으로, 특히 전로(1)의 하부측에 부착된 지지대(10)에 작동링크(12)가 실린더(5)에 의해 중심핀(11)을 중심으로 회전되도록 결합되는 전로의 슬래그커팅장치에 있어서, 상기 작동링크(12)의 선단에 부착되면서 내주면에 슬래그유도로(18)가 형성되고, 내측에 냉각통로(16,17)가 서로 연결되도록 적층 형성되는 슬래그유도관(13)와; 상기 작동링크(12)에 관통 내장되면서 각각 상기 슬래그유도관(13)의 냉각통로(16,17)에 연결되는 급배수라인(14,15)으로 구성되는 것을 특징으로 하는 전로의 슬래그커팅장치에 관한 것이다.The present invention relates to a slag cutting device of the converter, in particular, the operation link 12 is attached to the support 10 attached to the lower side of the converter (1) by the cylinder (5) to the center pin (11) In the slag cutting device of the converter coupled to rotate to the center, the slag induction 18 is formed on the inner peripheral surface while being attached to the front end of the operation link 12, so that the cooling passages (16, 17) are connected to each other inside A slag induction pipe 13 formed to be laminated; In the slag cutting device of the converter characterized in that it is composed of the supply and drainage line (14, 15) connected to the cooling passages (16, 17) of the slag induction pipe 13, respectively, through the operation link (12). It is about.

Description

전로의 슬래그커팅장치Slag cutting device of converter

본 고안은 전로의 슬래그커팅(Slag Cutting)장치에 관한 것으로, 특히 전로의 출강구를 통해 유출되는 슬래그를 슬래그유도관을 이용하여 바닥피트로 유출함으로써 수강래들내의 용강에 슬래그의 유입을 방지하는 전로의 슬래그커팅(Slag Cutting)장치에 관한 것이다.The present invention relates to a slag cutting device of the converter, and in particular, the slag flowing out through the outlet of the converter flows out to the bottom fitting by using the slag guide pipe to prevent the inflow of slag into the molten steel in the steel ladle. The present invention relates to a slag cutting apparatus of a converter.

일반적으로, 도1에 도시한 바와같이 전로(1)의 용강을 출강구(7)를 통해 수강래들(8)에 출강하게 되는데, 이때 비중차에 의해 용강의 상부에 부상되어 있는 슬래그는 출강구를 통해 용강이 완전히 출강된 후, 수강래들로 유입된다.In general, as shown in FIG. 1, the molten steel of the converter 1 is pulled out through the tapping hole 7 to the tapping ladle 8, wherein the slag floating on the upper part of the molten steel due to the specific gravity difference is tapped out. After the molten steel has been completely pushed through the sphere, it enters the pools.

여기서, 수강래들(8)로 용강과 함께 혼입된 슬래그는 용강의 품질을 악화시키기 때문에 슬래그커팅장치를 이용하여 출강완료직전에 용강으로부터 분리하게 된다.Here, since the slag mixed with the molten steel into the steel ladles 8 deteriorates the quality of the molten steel, the slag is separated from the molten steel immediately before the tapping is completed by using the slag cutting device.

이때, 종래의 슬래그커팅장치는 전로(1)의 출강완료 직전에 전기적인 슬래그감지장치나 숙련된 작업자의 육안에 의해 용강과 슬래그의 경계면을 감지하여 실린더(5)를 전진작동시키게 된다.At this time, the conventional slag cutting device detects the interface between the molten steel and the slag by the electric slag detection device or the naked eye of a skilled worker immediately before the completion of the tapping of the converter (1) to advance the cylinder (5).

따라서, 작동링크(12)는 중심핀(11)을 중심으로 90。회전하게 되고, 이로써 작동링크(12)의 선단에 부착된 분사노즐(6)이 출강구(7)를 향하게 되며, 동시에 분사노즐(6)로부터 질소와 공기를 혼합한 고압의 가스가 상향 분사되면서 출강구로부터 유출되는 전로(1)내의 슬래그(3)를 수강래들(8)로 유입되지 않도록 주위로 비산시키게 된다.Therefore, the actuating link 12 rotates about 90 ° about the center pin 11, whereby the spray nozzle 6 attached to the tip of the actuating link 12 faces the outlet 7 and simultaneously sprays. As the high-pressure gas mixed with nitrogen and air is injected upward from the nozzle 6, the slag 3 in the converter 1 flowing out of the tapping port is scattered around so as not to flow into the water receiving ladles 8.

그러나, 종래의 슬래그 커팅장치는 분사노즐(6)로부터 분사되는 가스의 분사소음에 의해 소음공해가 유발되고, 분사가스가 출강되는 용융물(2)과 접촉하면서 다량의 더스트를 발생시키며, 이 더스트가 주위로 비산되면서 주위설비를 오염내지 손상을 주게 된다.However, in the conventional slag cutting device, noise pollution is caused by the injection noise of the gas injected from the injection nozzle 6, and a large amount of dust is generated while contacting the melt 2 to which the injection gas is discharged. As it scatters around, it pollutes and damages the surrounding equipment.

또한, 분사노즐(6)로부터 분사되는 고압가스는 출강구(7)의 내화물마멸을 촉진시키게 되고, 더욱이 출강구의 슬리브를 파손시키게 되는 문제점이 있다.In addition, the high pressure gas injected from the injection nozzle 6 promotes refractory abrasion of the tap opening 7, and furthermore, there is a problem in that the sleeve of the tap opening is damaged.

본 고안은 전로의 출강구를 통해 유출되는 슬래그를 슬래그유도관을 이용하여 바닥피트로 유출함으로써 소음 및 더스트에 의한 공해를 방지하고, 설비의 손상을 예방할 수 있는 전로의 슬래그커팅(Slag Cutting)장치를 제공함에 그 목적이 있다.The present invention prevents pollution due to noise and dust and prevents damage to the equipment by flowing slag flowing out through the exit of the converter into the floor pits using the slag induction pipe, and slag cutting device of the converter that can prevent damage to the equipment. The purpose is to provide.

도1은 종래의 전로의 슬래그커팅장치의 작동상태를 나타내는 상태도,1 is a state diagram showing an operating state of a slag cutting device of a conventional converter;

도2는 본 고안에 따른 전로의 슬래그커팅장치의 작동상태를 나타내는 상태도,Figure 2 is a state diagram showing the operating state of the slag cutting device of the converter according to the present invention,

도3은 도2의 X-X 단면도이다.3 is a cross-sectional view taken along line X-X in FIG.

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

1: 전로 2: 용융물 3: 슬래그 4: 로구 5: 실린더 6: 가스분사노즐 7: 출강구 8: 수강래들 9: 가스공급라인 10: 지지대 11: 중심핀 12: 작동링크 13: 슬래그유도관 14: 냉각수급수라인 15: 냉각수배수라인 16: 내측냉각통로 17: 외측냉각통로 18: 슬래그유도로Reference Signs List 1: 1: converter 2: melt 3: slag 4: furnace 5: cylinder 6: gas injection nozzle 7: exit port 8: receiving ladle 9: gas supply line 10: support 11: center pin 12: operating link 13: slag induction pipe 14: cooling water supply line 15: cooling water drain line 16: inner cooling passage 17: outer cooling passage 18: slag flow path

상기한 목적을 달성하기 위하여 본 고안은 전로의 하부측에 부착된 지지대에 작동링크가 실린더에 의해 중심핀을 중심으로 회전되도록 결합되는 전로의 슬래그커팅장치에 있어서, 상기 작동링크의 선단에 부착되면서 내주면에 슬래그유도로가 형성되고, 내측에 냉각통로가 서로 연결되도록 적층 형성되는 슬래그유도관와; 상기 작동링크에 관통 내장되면서 각각 상기 슬래그유도관의 냉각통로에 연결되는 급배수라인으로 구성되는 것을 특징으로 하는 전로의 슬래그커팅장치에 관한 것를 제공한다.In order to achieve the above object, the present invention, in the slag cutting device of the converter is coupled to the support link attached to the lower side of the converter to rotate about the center pin by the cylinder, while being attached to the tip of the operation link Slag induction pipe is formed on the inner circumferential surface, the slag induction pipe is formed to be laminated so that the cooling passages are connected to each other; It is provided with a slag cutting device of the converter characterized in that it is composed of a feed and drain line connected to the cooling passage of the slag induction pipe while being penetrated through the operation link.

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

도2는 본 고안에 따른 전로의 슬래그커팅장치의 작동상태를 나타내는 상태도이고, 도3은 도2의 X-X 단면도이다.Figure 2 is a state diagram showing the operating state of the slag cutting device of the converter according to the present invention, Figure 3 is a cross-sectional view taken along line X-X of FIG.

본 고안에 따른 대략 ㄴ자 형상의 슬래그유도관(13)은 실린더(5)의 작동에 따라 중심핀(11)을 중심으로 회전되는 대략자 형상의 작동링크(12)의 선단에 고정 부착되어 있다.S slag induction pipe 13 of the approximately N-shaped according to the present invention is approximately rotated about the center pin 11 in accordance with the operation of the cylinder (5) It is fixedly attached to the tip of the magnetic link 12.

이때, 슬래그유도관(13)에는 그 내주면에 슬래그유도로(18)가 형성되어 있고, 그 내주면과 외주면 사이에 내외측냉각통로(16,17)가 적층되도록 형성되어 있으며, 이 내외측냉각통로(16,17)는 양단측에서 서로 내통되도록 연결되어 있다.At this time, the slag guide pipe 13 is formed on the inner circumferential surface of the slag guide pipe 13, the inner and outer cooling passages (16, 17) is formed between the inner circumferential surface and the outer circumferential surface, the inner and outer cooling passages (16, 17) are connected so that they may flow inward from each other.

여기서, 작동링크(12)에 관통 내장되는 급수라인(14)과 배수라인(15)는 각각 슬래그유도관(13)에 내통되도록 연결되어 있다.Here, the water supply line 14 and the drainage line 15 penetrated into the operation link 12 are connected to the inner slag induction pipe 13, respectively.

즉, 급수라인(14)은 내측냉각통로(16)에 연결되어 있고, 배수라인(15)은 외측냉각통로(17)에 연결되어 있다.That is, the water supply line 14 is connected to the inner cooling passage 16, the drain line 15 is connected to the outer cooling passage (17).

따라서, 급수라인(14)을 통해 공급되는 냉각수는 내측냉각통로(16)을 순환한 후, 다시 외측냉각통로(17)를 거쳐 배수라인(15)으로 드레인된다.Therefore, the cooling water supplied through the water supply line 14 is circulated through the inner cooling passage 16 and then drained to the drain line 15 via the outer cooling passage 17.

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

먼저, 전로(1)의 출강완료 직전에 전기적인 슬래그감지장치나 숙련된 작업자의 육안에 의해 용강과 슬래그의 경계면이 감지되면 전로(1)를 약간 경동시켜 출강구(7)를 통해 출강되는 용융물(용강+슬래그)(2)이 수강래들(8)을 벗어나도록 함으로써 용융물에 섞여 있는 슬래그(3)가 수강래들에 유입되지 않도록 한다.First, when the interface between the molten steel and the slag is detected by the electric slag detecting device or the naked eye of an experienced worker immediately before the completion of the tapping of the converter 1, the molten steel is pulled out through the tapping hole 7 by slightly tilting the converter 1. The molten steel + slag (2) leaves the water ladles 8 so that the slag 3 mixed in the melt does not enter the water ladles.

동시에 후진상태의 실린더(5)를 전진작동시키게 되고, 이때 작동링크(12)는 중심핀(11)을 중심으로 90。회전하게 되며, 이로써 슬래그유도관(12)의 상단이 출강구(7)의 하단에 끼워지게 된다.At the same time, the forward movement of the cylinder (5) in the reverse state, the operation link 12 is rotated 90 ° around the center pin (11), whereby the upper end of the slag induction pipe 12 is the tap hole (7) It will fit on the bottom of the.

여기서, 출강구(7)를 통해 유출되는 전로(1)의 슬래그(3)는 슬래그유도관(12)의 슬래그유도로(18)을 따라 유출되면서 수강래들(8)이 아닌 바닥피트로 떨어지게 된다.Here, the slag (3) of the converter (1) flowing through the tapping hole (7) is discharged along the slag flow path 18 of the slag induction pipe 12 to fall to the floor pits instead of the water receiving ladle (8). do.

그리고, 급수라인(14)을 통해 공급되는 냉각수는 내측냉각통로(16)을 따라 흐르면서 슬래그유도로(18)을 따라 흐르는 슬래그(3)에 의해 열화되는 슬래그유도관(12)을 냉각시키게 된다.The coolant supplied through the water supply line 14 cools the slag induction pipe 12 that is degraded by the slag 3 flowing along the slag flow path 18 while flowing along the inner cooling passage 16.

또한, 내측냉각통로(16)를 따라 흐르는 냉각수는 다시 외측냉각통로(16)를 거쳐 배수라인(15)을 통해 드레인된다.In addition, the cooling water flowing along the inner cooling passage 16 is drained through the drain line 15 via the outer cooling passage 16 again.

본 고안은 전로의 출강구를 통해 유출되는 슬래그를 슬래그유도관을 이용하여 바닥피트로 유출함으로써 소음 및 더스트에 의한 공해를 방지하고, 설비의 손상을 예방할 수 있는 효과를 제공하게 된다.The present invention prevents pollution due to noise and dust by preventing the slag flowing out through the outlet of the converter to the floor pits using the slag induction pipe, and provides an effect to prevent damage to the facility.

Claims (1)

전로(1)의 하부측에 부착된 지지대(10)에 작동링크(12)가 실린더(5)에 의해 중심핀(11)을 중심으로 회전되도록 결합되는 전로의 슬래그커팅장치에 있어서,In the slag cutting device of the converter is coupled to the support (10) attached to the lower side of the converter (1) such that the operation link 12 is rotated about the center pin (11) by the cylinder (5), 상기 작동링크(12)의 선단에 부착되면서 내주면에 슬래그유도로(18)가 형성되고, 내측에 냉각통로(16,17)가 서로 연결되도록 적층 형성되는 슬래그유도관(13)와;A slag induction pipe (13) attached to the front end of the operation link (12) and having a slag induction (18) formed on an inner circumferential surface thereof and having a cooling path (16, 17) laminated thereinto be connected to each other; 상기 작동링크(12)에 관통 내장되면서 각각 상기 슬래그유도관(13)의 냉각통로(16,17)에 연결되는 급배수라인(14,15)으로 구성되는 것을 특징으로 하는 전로의 슬래그커팅장치.Slag cutting device of the converter characterized in that it is composed of a supply and drainage line (14, 15) connected to the cooling passages (16, 17) of the slag induction pipe (13), respectively, through the operation link (12).
KR2019980023223U 1998-11-26 1998-11-26 Slag cutting device of converter KR20000010807U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100863740B1 (en) * 2002-08-12 2008-10-16 주식회사 포스코 Lance beam for a slag cutting apparatus of a converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100863740B1 (en) * 2002-08-12 2008-10-16 주식회사 포스코 Lance beam for a slag cutting apparatus of a converter

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