KR100902826B1 - Coolant impression method of blast furnace lower part - Google Patents

Coolant impression method of blast furnace lower part Download PDF

Info

Publication number
KR100902826B1
KR100902826B1 KR1020020069226A KR20020069226A KR100902826B1 KR 100902826 B1 KR100902826 B1 KR 100902826B1 KR 1020020069226 A KR1020020069226 A KR 1020020069226A KR 20020069226 A KR20020069226 A KR 20020069226A KR 100902826 B1 KR100902826 B1 KR 100902826B1
Authority
KR
South Korea
Prior art keywords
press
heavy oil
indentation
blast furnace
extension pipe
Prior art date
Application number
KR1020020069226A
Other languages
Korean (ko)
Other versions
KR20040040884A (en
Inventor
안준영
정주태
박성원
Original Assignee
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020020069226A priority Critical patent/KR100902826B1/en
Publication of KR20040040884A publication Critical patent/KR20040040884A/en
Application granted granted Critical
Publication of KR100902826B1 publication Critical patent/KR100902826B1/en

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • C21B7/106—Cooling of the furnace bottom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/24—Cooling arrangements
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

본 발명은 고로의 휴지시는 물론 조업 중에도 냉각제를 압입하여 고로 저부의 열화 및 냉각 방지로 생산성 향상과 안전조업을 제공할 수 있는 고로 저부의 냉각제 압입방법에 관한 것으로서, 그 특징적인 구성은 중유의 유동성을 확보하는 압입 준비작업 후 중유 압입호스와 연장관을 체결하고 중유를 압입하는 1단계와, 카본 패스트의 유동성을 확보하는 압입 준비작업 후 카본 패스트 압입호스와 연장관을 체결하고 카본 패스트를 압입하는 2단계와, 상기 연장관의 내부에 카본 패스트가 고착되지 않도록 중유의 유동성을 확보하는 압입 준비작업 후 주유 압입호스와 연장관을 체결하고 중유를 압입하는 3단계를 포함하여서 된 것이다.The present invention relates to a method of injecting coolant at the bottom of a blast furnace which can provide productivity and safety operation by injecting a coolant at the time of blast furnace as well as during operation to prevent deterioration and cooling of the bottom of the blast furnace. 1 step of tightening heavy oil pressurized hose and extension pipe after press-fitting preparation to secure fluidity, and 2 step of pressing carbon fast press-fit hose and extension tube and press-fitting carbon fast after press-fitting preparation operation to ensure fluidity of carbon fast And a step of fastening the fuel injection press hose with the extension pipe and injecting heavy oil after the press preparation operation for securing the fluidity of the heavy oil so that carbon fast is not fixed to the inside of the extension pipe.

고로, 냉각제, 중유, 카본 패스트, 압입Blast Furnace, Coolant, Heavy Oil, Carbon Fast, Press-In

Description

고로 저부의 냉각제 압입방법{Coolant impression method of blast furnace lower part}Coolant impression method of blast furnace lower part}

도 1은 일반적인 방법으로 냉각제를 압입하는 상태를 나타낸 개략도.1 is a schematic view showing a state in which the coolant is pressed in a general manner.

도 2는 종래의 압입방법을 설명하기 위한 흐름도.2 is a flowchart illustrating a conventional indentation method.

도 3은 본 발명에 따른 압입방법으로 냉각제를 압입하는 상태를 나타낸 개략도.Figure 3 is a schematic diagram showing a state of indenting the coolant by the indentation method according to the present invention.

도 4는 본 발명에 따른 압입방법을 설명하기 위한 흐름도.4 is a flow chart for explaining the indentation method according to the present invention.

※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※

1 : 철피 2 : 연와1: barbed wire 2: kite

3 : 압입니쁠 4, 7a, 9a, 11a : 밸브3: press-fit nipple 4, 7a, 9a, 11a: valve

5 : 출선구 6 : 풍구상5: Exit 6: Punggu Award

7 : 연장관 7b, 9b, 11b : 퀵 조인트7: extension pipe 7b, 9b, 11b: quick joint

8 : 중유 압입기 8a, 10a : 용해탱크8: Heavy oil presser 8a, 10a: Melting tank

9, 11 : 압입호스 10 : 카본 패스트 압입기9, 11: press-fit hose 10: carbon fast press-fit machine

본 발명은 고로 저부의 냉각제 압입방법에 관한 것으로서, 더욱 상세하게는 고로의 휴지시는 물론 조업 중에도 냉각제를 압입하여 고로 저부의 열화 및 냉각 방지로 생산성 향상과 안전조업을 제공할 수 있는 고로 저부의 냉각제 압입방법에 관한 것이다. The present invention relates to a method of injecting a coolant into the bottom of a blast furnace, and more particularly, by injecting a coolant during the blast furnace as well as during operation, thereby improving productivity and providing safe operation by preventing deterioration and cooling of the bottom of the blast furnace. It relates to a coolant indentation method.

일반적으로 고로의 저부에는 고열이 발생되므로 철피(1)의 변형, 노내의 가스에 의한 카본 연와(2)의 침식 및 기타 여러 가지 복잡한 이유로 노저의 측벽 내부에 틈이 발생되게 되는데, 이 틈새에 부정형 내화물을 주입시켜 열 전달률을 높게 하여 냉각효과를 향상시키고, 출선구(5) 주위로부터 노내 가스유출을 방지하고 있다.In general, high temperatures are generated at the bottom of the blast furnace, resulting in cracks inside the side walls of the furnace due to deformation of the shell (1), erosion of the carbon lead (2) by gas in the furnace, and many other complex reasons. The refractory is injected to increase the heat transfer rate, thereby improving the cooling effect, and preventing the outflow of gas in the furnace from around the outlet 5.

이러한 냉각제로는 카본 패스트를 주로 사용하고 있으며, 압입니쁠(3)의 구경은 25~30mm 가 적당하며 수량 및 위치는 상황에 따라 다르지만 정기적으로 행할 경우에는 원주상으로 10 ~ 30개, 간격은 각각 1 ~ 3M로 하는 것이 일반적이다.Carbon fast is mainly used as the coolant, and the size of the press-fit nipple (3) is suitable for 25 to 30 mm, and the quantity and location vary depending on the situation. It is common to set it as 1-3M each.

고로 휴지시의 압입방법은 압입 준비작업으로서, 카본 패스트 압입기(10)에 연결된 용해탱크(10a)에서 카본 패스트를 60 ~ 80℃로 가열 및 교반하여 충분한 유동성을 확보한 다음 노저에 살수되는 해수를 차단한 상태에서 압입니쁠(3)의 캡을 열고 응고된 압입재를 제거하기 위한 보링작업을 한 다음 밸브(4)를 연결한다. The indentation method at the time of the blast furnace is a press-fitting preparation operation, and the carbon fast is heated and stirred to 60 to 80 ° C. in a dissolution tank 10a connected to the carbon fast indenter 10 to ensure sufficient fluidity, and then the seawater sprayed into the furnace Open the cap of the press-fit nipple (3) in the state of blocking the boring work to remove the solidified press-fit material and then connect the valve (4).

그리고 압입용 호스(9)를 퀵조인트(9b)로 체결하고 압입니쁠(3)의 밸브(4)와 압입밸브(9a)를 열어 중유 또는 카본 패스트를 압입하고 압입 작업이 완료되면 압입니쁠(3)의 밸브(4)와 압입용 호스(9)의 밸브(9a)를 차단한 후 노저에 해수를 살수하는 것으로서, 상술한 과정을 반복하여 복수의 압입공에 압입하는 것이다. Then, the press fitting hose (9) is fastened with a quick joint (9b), the valve (4) and the press fitting valve (9a) of the press fitting nipple are opened, and the heavy oil or carbon fast is pressed in and the press fitting nipple is completed. After the valve 4 of (3) and the valve 9a of the press-fit hose 9 are cut off, seawater is sprayed into the furnace, and the above-described process is repeated to press-fit into a plurality of press-fit holes.                         

한편, 조업 중에는 노저 내부의 연와(2)를 보호하기 위해 20℃ 이하의 해수가 연속살수 됨으로 인하여 압입니쁠(3) 내의 압입재인 카본 패스트가 응고되어 있으므로 먼저 보링작업을 실시하여야 하나 조업 중에는 보링작업이 곤란하기 때문에 압입을 하지 않는 것이 일반화되어 있다.On the other hand, the carbon fast, which is the press-fitting material in the press-fitting nipple (3), has solidified due to the continuous spraying of seawater of 20 ° C or lower during the operation to protect the lead (2) inside the furnace. Since it is difficult to work, it is common to not press-fit.

다만 온도가 상승하는 포인트에 압입작업을 할 때에는 압입니쁠(3)이 풍구상(6)의 하부에 설치되어 있으므로 압입 준비작업 후 해수를 부분적으로 차단하고 압입호스(9)를 체결한 후 압입니쁠(3)과 압입호스(9)의 밸브(4,9a)를 열고 유동성이 좋은 중유만 일부 압입하고 노저에 해수를 살수한다.However, when press-fitting at the point where the temperature rises, the press-fit nipple (3) is installed at the lower part of the wind hole (6), so after the preparation for press-fitting, the sea water is partially blocked and the press-fit hose (9) is tightened. Open the valves (4, 9a) of the mouth nipple (3) and the press-fit hose (9), and presses only a portion of heavy oil with good fluidity and sprays seawater in the furnace.

그리고 상기 중유의 압입이 완료되면 해수를 재 차단한 후 압입니쁠(3) 및 압입호스(9)의 밸브(4,9a)를 차단한 후 압입호스(9)를 분리시키고 노저에 해수를 재 살수한다.When the pressurization of the heavy oil is completed, the seawater is cut off again, the valves 4 and 9a of the pressurized nipple 3 and the pressurized hose 9 are cut off, the pressurized hose 9 is separated, and the seawater is reloaded into the furnace. To live.

그러나 압입공 주변이 카본 페스트에 의해 굳은 상태이므로 압입량이 충분하게 들어가지 않게 때문에 노저연와 측의 온도상승을 억제할 수 있는 조건을 갖추기 못하게 된다.However, since the periphery of the indentation hole is hardened by the carbon fest, the indentation amount does not sufficiently enter, and thus the condition for suppressing the rise of the bottom edge and the temperature cannot be satisfied.

또한 압입호스(9)를 분리/체결 할 때 부분적인 해수차단에 따른 위험성으로 인하여 작업자가 안전재해에 노출되어 있다는 문제점이 발생되고 있다. In addition, there is a problem that the worker is exposed to a safety disaster due to the risk of partial seawater blocking when the press-fit hose (9) is separated / fastened.

한편, 중유의 성분은 표 1에 나타낸 바와 같이 가격이 저렴하고 점성이 낮기 때문에 작은 틈새도 압입이 가능하다는 장점이 있으나 비중이 낮고 쉽게 소성되어 단기간에 기공이 형성되는 단점이 있다. On the other hand, the components of the heavy oil has the advantage that it is possible to indent even small gaps because the price is low and the viscosity is low as shown in Table 1, but there is a disadvantage that the specific gravity is low and easily calcined to form pores in a short time.

반면, 카본 패스트는 밀 충진시 연와 사이의 기공을 차단하여 노내 가스침투 를 방지할 수 있으므로 온도상승을 효과적으로 방지할 수 있으나 점성이 높아 연와 사이로 미세한 압입이 곤란한 문제점이 있었다. On the other hand, carbon fast prevents gas infiltration in the furnace by blocking the pores between the lead and the air during filling, which can effectively prevent the temperature rise, but has a problem that it is difficult to fine indentation between the lead and the high viscosity.

그러므로 조업중 압입에 있어 카본 패스트의 압입 여부에 의해 노저온도 상승을 억제할 수 있다고 할 수 있으므로 카본 패스트를 다량 압입 할 수록 그 효과가 좋다고 할 수 있다.Therefore, it can be said that the rise of the temperature of the furnace can be suppressed by injecting carbon fast during indentation during operation, so that the larger the carbon fast indentation, the better the effect.

구분division 비중importance 점성(p) 물=1cPViscosity (p) Water = 1 cP 화학조정(%)Chemical adjustment (%) 가격(원/톤)Price (KRW / ton) CC H2H2 O2O2 GASGAS N2N2 중유Heavy oil 0.96540.9654 0.6(70℃)0.6 (70 ℃) 86.486.4 11.511.5 0.50.5 0.50.5 0.20.2 2020 카본 패스트Carbon fast 1.301.30 20(60℃) 8(80℃)20 (60 ℃) 8 (80 ℃) 5454 휘발분 : 39% ASH : 6% 수분 : 1%Volatilization: 39% ASH: 6% Moisture: 1% 170170

그러나 이러한 종래의 압입방법은 카본 패스트가 압입니쁠(3)에 밀 충진된 상태에서 압입작업을 마치게 되므로 차기 압입 작업시 압입공이 막히게 되어 보링작업을 다시 한 뒤에 중유나 카본 패스트를 압입 하여야하는 문제점이 있었다.However, this conventional indentation method is because the carbon fast finishes the indentation work in the state filled with the indentation nipple (3), the press-fitted hole is blocked during the next indentation work, and the heavy oil or carbon fast should be indented after boring work again. There was this.

또한 조업중에는 압입을 위한 압입공의 보링작업이 곤란하기 때문에 노저압입 작업을 알 수 없게되는 문제점이 있었다.In addition, the boring operation of the indentation hole for indentation during operation is difficult, there was a problem that the bottom-indentation operation is not known.

본 발명은 상기한 문제점 해결하기 위하여 발명한 것으로서, 그 목적은 노저 압입 작업에 있어 중유를 이용하여 1, 2차에 걸친 압입을 실시하여 조업 중은 물론 휴지 시에도 별도의 보링작업 없이 노저 압입작업이 가능하게 하고 노저온도 상승시 신속하게 대응하여 냉각제의 압입작업을 실시함으로써 노저온도 상승을 억제하여 생산성을 향상시킬 수 있는 고로 저부의 냉각제 압입방법을 제공함에 있다.The present invention has been invented to solve the above problems, the purpose of the indentation operation in the furnace by using heavy oil in the first and second indentation operation during operation as well as no-boring operation without a separate boring operation at rest The present invention provides a method of injecting a coolant into the bottom of a blast furnace which can improve the productivity by suppressing an increase in the bottom temperature by enabling the pressurizing operation of the coolant to respond to the rise of the bottom temperature quickly.

상기 목적을 달성하기 위한 본 발명의 특징적인 구성을 설명하면 다음과 같다.Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

본 발명의 고로 저부의 냉각제 압입방법은 중유의 유동성을 확보하는 압입 준비작업 후 중유 압입호스와 연장관을 체결하고 중유를 압입하는 1단계와, 카본 패스트의 유동성을 확보하는 압입 준비작업 후 카본 패스트 압입호스와 연장관을 체결하고 카본 패스트를 압입하는 2단계와, 상기 연장관의 내부에 카본 패스트가 고착되지 않도록 중유의 유동성을 확보하는 압입 준비작업 후 주유 압입호스와 연장관을 체결하고 중유를 압입하는 3단계를 포함하여서 된 것이다.The coolant indentation method of the blast furnace bottom of the present invention is the first step of fastening the heavy oil pressurizing hose and the extension pipe after the pressurizing preparation operation to ensure the fluidity of heavy oil, and pressurized carbon fast pressurization after the pressurizing preparation operation to secure the fluidity of carbon fast 2 steps of tightening the hose and the extension pipe and press-fitting the carbon fast, and 3 steps of tightening the oil injection press-fit hose and the extension pipe and press-in heavy oil after the press-fitting preparatory work to secure the fluidity of the heavy oil so that the carbon fast is not stuck inside the extension pipe. It was to include.

이와 같은 특징을 갖는 본 발명을 상세하게 설명하면 다음과 같다.Referring to the present invention having such characteristics in detail as follows.

도 3은 본 발명에 따른 압입방법으로 냉각제를 압입하는 상태를 나타낸 개략도이고, 도 4는 본 발명에 따른 압입방법을 설명하기 위한 흐름도로서, 종래 장치와 동일한 부분은 그 설명을 생략하고 동일 부호를 부여하기로 한다.Figure 3 is a schematic diagram showing a state of indenting the coolant by the indentation method according to the present invention, Figure 4 is a flow chart for explaining the indentation method according to the present invention, the same parts as the conventional apparatus is omitted the description and the same reference numerals. I will grant it.

여기에서 참조되는 바와 같이 본 발명은 중유 또는 카본 패스트를 압입할 때 압입호스(9,11)의 단부에 설치된 퀵조인트(9b,11b)의 연결부위가 풍구상(6)보다 상측에 위치되도록 고로 저부의 압입니쁠(3)에 연장관(7)이 연결되어 있고, 상기 연장관(7)의 상단부에는 밸브(7a)와 퀵조인트(7b)가 각각 설치되어 있다.As referred to herein, the present invention provides a blast furnace so that the connection portions of the quick joints 9b and 11b provided at the ends of the press-fit hoses 9 and 11 when the heavy oil or carbon fast is press-fitted are positioned above the air vents 6. An extension pipe 7 is connected to the press-fit nipple 3 at the bottom, and a valve 7a and a quick joint 7b are respectively provided at the upper end of the extension pipe 7.

이하 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail.

먼저, 1단계 압입 작업으로서, 중유를 압입 할 수 있도록 준비작업을 수행하고 연장관(7)의 단부에 중유 압입호스(9)를 연결한 후 밸브(9a)와 연장관(7)에 설치된 밸브(7a) 및 압입니쁠(3)에 설치된 밸브(4)를 열고 중유 압입기(8)를 이용하 여 용해탱크(8a)에 저장된 중유를 압입한다.First, as a one-step press-fitting operation, preparation work is performed to press-fit heavy oil, and the heavy oil press-fit hose 9 is connected to the end of the extension pipe 7, and then the valve 7a installed in the valve 9a and the extension pipe 7 is provided. ) And the valve (4) installed on the press-fit nipple (3) and press the heavy oil stored in the dissolution tank (8a) using a heavy oil presser (8).

이때 압입조건은 압력 15~18kg/cm2 압입량 22~30kg으로 한다.At this time, the indentation conditions are 15 to 18kg / cm 2 indentation amount 22 to 30kg.

상기 중유를 압입하는 1단계 압입이 완료되면 상기 각 밸브(6a,7a,9a)를 각각 닫고 압입호스(9)를 분리시킨다.When the first step of press-fitting the heavy oil is completed, the valves 6a, 7a and 9a are closed, respectively, and the press-fit hose 9 is separated.

그리고 2단계 압입 작업으로서, 카본 패스트를 압입 할 수 있도록 준비작업을 수행하고 연장관(7)의 단부에 카본 패스트 압입호스(11)를 연결한 후 밸브(11a)와 연장관(7)에 설치된 밸브(7a) 및 압입니쁠(3)에 설치된 밸브(4)를 열고 카본 패스트 압입기(10)를 이용하여 용해탱크(10a)에 저장된 카본 패스트를 압입한다.Then, as a two-stage press-in operation, the carbon fast press-fit hose 11 is connected to the end of the extension pipe 7, and the valves installed on the valve 11a and the extension pipe 7 are formed. 7a) and the valve 4 provided in the press-fit nipple 3 are opened and the carbon fast stored in the dissolution tank 10a is press-fitted using the carbon fast press-fit machine 10.

이때 압입조건은 압력 18~20kg/cm2 압입량 21kg이하 까지로 한다.At this time, the indentation conditions should be up to the pressure of 18 ~ 20kg / cm 2 indentation amount less than 21kg.

상기 카본 패스트를 압입하는 2단계 압입이 완료되면 상기 각 밸브(6a,7a,11a)를 각각 닫고 압입호스(11)를 분리시킨다.When the two-step indentation of the carbon fast press-in is completed, the valves 6a, 7a, and 11a are closed, respectively, and the press-in hose 11 is separated.

그리고 3단계 압입 작업으로서, 중유를 압입 할 수 있도록 준비작업을 수행하고 연장관(7)의 단부에 중유 압입호스(9)를 연결한 후 밸브(9a)와 연장관(7)에 설치된 밸브(7a) 및 압입니쁠(3)에 설치된 밸브(4)를 열고 중유 압입기(8)를 이용하여 용해탱크(8a)에 저장된 중유를 압입한다.Then, as a three-stage press-in operation, the heavy oil pressurization hose 9 is connected to the end of the extension pipe 7 and the valve 7a is installed at the valve 9a and the extension pipe 7. And open the valve (4) installed in the press-fit nipple (3) and press the heavy oil stored in the dissolution tank (8a) using a heavy oil presser (8).

이때 압입조건은 압력 18~120kg/cm2 압입량 50~80kg으로 한다.At this time, the indentation conditions are 18 to 120kg / cm 2 indentation amount 50 to 80kg.

상기 중유를 압입하는 3단계 압입이 완료되면 상기 각 밸브(6a,7a,9a)를 각각 닫고 압입호스(9)를 분리시킨다.When the three-stage indentation of the heavy oil press-in is completed, the valves 6a, 7a, and 9a are closed, respectively, and the press-in hose 9 is separated.

상기 각 단계에서의 압입조건은 표 2에 나타낸 실시 예와 같이 양호한 상태 의 조건으로 하는 것이다. The indentation conditions in the above steps are in good condition as in the embodiment shown in Table 2.

Figure 112002036963878-pat00001
Figure 112002036963878-pat00001

상술한 바와 같이 1단계 중유 압입 후 2단계에서 카본 패스트를 압입하면 캄본 패스트의 압입량이 증가되어 고로 저부의 냉각효과를 향상시킬 수 있게되는 것이다.As described above, when the carbon fast is press-fitted in the second step after the first step of heavy oil press-fitting, the press fastening amount of the cambon fast is increased to improve the cooling effect of the bottom of the blast furnace.

또한 2단계 카본 패스트를 압입한 후 3단계에서 중유를 압입하면 연장관(7)내에 카본 패스트가 아닌 중유가 잔류하여 연장관(7)이 고착되지 않게되며, 별도의 보링작업 없이도 카본 패스트의 압입 작업이 가능하게 되는 것이다.In addition, if the heavy oil is pressurized in the third step after the second step of carbon fast press-in, heavy oil other than carbon fast remains in the extension pipe 7 so that the extension pipe 7 is not stuck and the carbon fast press-in operation is performed without additional boring. It becomes possible.

이와 같이 본 발명은 조업 중 중유 및 카본 패스트의 압입이 가능하여 노저온도 상승시 임시휴풍을 배제할 수 있고 노저연와의 수명연장으로 고로의 사용수명을 연장할 수 있게되는 특유의 효과가 있다. As such, the present invention is capable of injecting heavy oil and carbon fast during operation, thereby eliminating temporary idle air when the temperature rises in the furnace, and extending the service life of the blast furnace by extending the life of the furnace.

또한, 본 발명은 저가의 중유와 고가의 카본 패스트를 병행하여 사용하므로 원가를 절감할 수 있게 되는 특유의 효과가 있다.In addition, the present invention has a unique effect of reducing the cost because it uses a combination of low-cost heavy oil and expensive carbon fast.

또한, 본 발명은 노저 압입작업의 단순화 및 안전화로 작업자의 작업부하를 최소화 할 수 있게되는 특유의 효과가 있다.In addition, the present invention has a unique effect that can minimize the work load of the operator by simplifying and safety of the indentation work.

Claims (3)

중유의 유동성을 확보하는 압입 준비작업 후, 고로 저부의 측벽에 설치된 압입니쁠에 연장관을 연결하고 이 연장관에 중유 압입기와 연결된 중유 압입호스를 체결한 뒤, 중유 압입기를 이용하여 고로 저부의 측벽에 중유를 압입하는 1단계;After preparing the press-fitting operation to secure the fluidity of heavy oil, connect the extension pipe to the press-fit nipple installed on the side wall of the blast furnace, and fasten the heavy oil press-fit hose connected to the heavy oil presser to the extension pipe, and then use the heavy oil press-fit to the side wall of the blast furnace bottom. 1 step of injecting heavy oil; 카본 패스트의 유동성을 확보하는 압입 준비작업 후, 상기 연장관에 카본 패스트 압입기와 연결된 카본 패스트 압입호스를 체결한 뒤, 카본 패스트 압입기를 이용하여 고로 저부의 측벽에 카본 패스트를 압입하는 2단계; 및After the press-preparation operation to secure the fluidity of the carbon fast, the step of fastening the carbon fast indentation hose connected to the carbon fast indenter to the extension pipe, and press-fitting carbon fast to the side wall of the blast furnace using a carbon fast indenter; And 상기 연장관의 내부에 카본 패스트가 고착되지 않도록 중유의 유동성을 확보하는 압입 준비작업 후, 상기 연장관에 중유 압입기와 연결된 중유 압입호스를 체결한 뒤, 중유 압입기를 이용하여 상기 연장관 및 압입니쁠에 잔류하는 카본 패스트를 중유와 더불어 고로 저부의 측벽에 압입하는 3단계를 포함하는 것을 특징으로 하는 고로 저부의 냉각제 압입방법. After the press-fitting preparatory work to secure the fluidity of heavy oil so that carbon fast is not fixed to the inside of the extension pipe, the heavy oil press hose connected to the heavy oil presser is fastened to the extension pipe, and remaining in the extension pipe and the press-fit nipple using a heavy oil presser. And a three step of press-fitting carbon fast with heavy oil to the side wall of the blast furnace bottom. 제 1 항에 있어서, 상기 연장관의 단부는 해수가 살수되는 풍구상의 상부에 위치됨을 특징으로 하는 고로 저부의 냉각제 압입방법.The method according to claim 1, wherein the end of the extension pipe is located in the upper part of the tuyere that the seawater is sprayed. 제 1 항에 있어서, 1단계의 압입조건은 이때 압입조건은 압력 15~18kg/cm2 압입량 22~30kg 이고, 2단계의 압입조건은 압력 18~20kg/cm2 압입량 21kg이하까지이며, 3단계의 압입조건은 압력 18~120kg/cm2 압입량 50~80kg임을 특징으로 하는 고로 저부의 냉각제 압입방법.According to claim 1, the indentation conditions of the first stage at this time the indentation conditions are the pressure 15 ~ 18kg / cm 2 indentation amount 22 ~ 30kg, the indentation conditions of the second stage is up to 21 kg or less of pressure 18 ~ 20kg / cm 2 indentation, The indentation condition of the three stages is a pressure injector for the coolant at the bottom of the blast furnace, characterized in that the pressure 18 ~ 120kg / cm 2 indentation amount 50 ~ 80kg.
KR1020020069226A 2002-11-08 2002-11-08 Coolant impression method of blast furnace lower part KR100902826B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020020069226A KR100902826B1 (en) 2002-11-08 2002-11-08 Coolant impression method of blast furnace lower part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020020069226A KR100902826B1 (en) 2002-11-08 2002-11-08 Coolant impression method of blast furnace lower part

Publications (2)

Publication Number Publication Date
KR20040040884A KR20040040884A (en) 2004-05-13
KR100902826B1 true KR100902826B1 (en) 2009-06-12

Family

ID=37338139

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020020069226A KR100902826B1 (en) 2002-11-08 2002-11-08 Coolant impression method of blast furnace lower part

Country Status (1)

Country Link
KR (1) KR100902826B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031211A1 (en) * 2000-10-07 2002-04-18 Sms Demag Aktiengesellschaft Cooling element for shaft furnaces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031211A1 (en) * 2000-10-07 2002-04-18 Sms Demag Aktiengesellschaft Cooling element for shaft furnaces

Also Published As

Publication number Publication date
KR20040040884A (en) 2004-05-13

Similar Documents

Publication Publication Date Title
KR100902826B1 (en) Coolant impression method of blast furnace lower part
CN1313460A (en) Accessory multifunctional water jetting manifold and operation thereof
CN102925630B (en) Method for preventing water vapour in vacuum hopper and feeding elephant trunk of RH furnace
JP4972609B2 (en) Pressurized steam aging method and equipment for steelmaking slag
CN101949335A (en) Separated cylinder jacket connection structure
CN102046959A (en) A high pressure fuel connection arrangement to an injector holder in a common rail system
KR950008931Y1 (en) Crushing tube of vaccum degassing process
JP5217381B2 (en) Method for sealing refining vessel and method for suppressing nitrogen gas intrusion in vacuum degassing furnace
KR100480359B1 (en) Apparatus for grouting nozzle brick
KR920000533Y1 (en) Ladle apparatus for spray of high pressure gas
JPS59193227A (en) Protection of gas blowing plug
CN104930851B (en) A kind of vacuum melting anti-splash device
KR20000020765U (en) Device for repairing the bottom brick of furnace bottom
JP2007191777A (en) Method for charging molten iron
CN219529430U (en) Overflow valve of eye blocking machine
KR100599277B1 (en) cooling structure of law pressure casting machine
JP2002326237A (en) Thermal deburring device for structure
KR101235550B1 (en) Method of inhibiting turbulent tapping in blast furnace
CN115231322A (en) Self-compacting concrete conveying and exhausting method and integrated joint device
CN1253058A (en) Vacuum pressure diffusion technology for welding between metal and non-metal
EP1296787A1 (en) Refractory component and assembly with improved sealing for injection of an inert gas
JPS62161904A (en) Method for extending life of blast furnace tap hole
KR200203237Y1 (en) Pressing-in apparatus of tap hole in blast furnace
JP2005076084A (en) Method for repairing blast furnace side wall
CN114643355A (en) Drainage process technology for firing and oxygen burning of rare earth wires for ladle nozzle

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130605

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20140610

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20150609

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20160608

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20170609

Year of fee payment: 9