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WO2020022577A1 - Apparatus for molten iron runner desilication - Google Patents

Apparatus for molten iron runner desilication Download PDF

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Publication number
WO2020022577A1
WO2020022577A1 PCT/KR2018/014766 KR2018014766W WO2020022577A1 WO 2020022577 A1 WO2020022577 A1 WO 2020022577A1 KR 2018014766 W KR2018014766 W KR 2018014766W WO 2020022577 A1 WO2020022577 A1 WO 2020022577A1
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WIPO (PCT)
Prior art keywords
skimmer
molten iron
slag
deregulation
columnar
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Ceased
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PCT/KR2018/014766
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French (fr)
Korean (ko)
Inventor
최응수
허금식
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Posco Holdings Inc
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Posco Co Ltd
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Publication date
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Publication of WO2020022577A1 publication Critical patent/WO2020022577A1/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal

Definitions

  • the present invention relates to a columnar desulfurization apparatus for molten iron.
  • the molten iron obtained from the FINEX method has a high content of silicon (Si) and thus requires desulfurization outside the furnace.
  • Representative out-of-furnace desulfurization operations include columnar desulfurization operations that induce desulfurization, such as iron oxide, to induce desulfurization reactions between molten iron and molten iron.
  • the molten iron obtained in the FINEX method has a higher Si content (% by weight) than the blast furnace, which causes an operation load in a subsequent steelmaking process.
  • the Si component content (wt%) of the molten iron obtained by the Finex method is higher than that of the blast furnace because the combustion zone temperature of molten gas furnace that produces molten iron, that is, molten iron, in the Finex method is higher than that of the blast furnace.
  • the Si content of the blast furnace molten iron is about 0.5% by weight based on the molten iron temperature of 1,500 ° C, while the Si content of the FINEX molten iron is about 0.8% by weight, which is higher than that of the blast furnace.
  • the columnar desulfurization method has been proposed to reduce the Si content of the Finex molten iron.
  • a skimmer is installed in a large hot water flowing through molten iron, and the skimmer is separated into molten iron and slag through the skimmer.
  • the separated slag is flowed into the slag flow, the molten iron is flowed into the large bath, and just before being supplied from the molten iron transportation device, the dispersing iron, such as sintered ore, is added by deregulation to lower the Si content of the molten iron.
  • the conventional columnar denitrification method uses a skimmer, so there are problems such as the attachment of a raceway barrel, the occurrence of slag forming in the molten iron transport apparatus (TLC), and the increase in the throughput of slag in the steelmaking process.
  • TLC molten iron transport apparatus
  • two skimmers are used, and a high speed blowing of deregulation is performed between the first and second skimmers so that the desulfurization reaction can be efficiently carried out, and SiO 2 and slag generated by the descaling reaction can be removed through the second skimmer. It is intended to provide a columnar desulfurization apparatus for molten iron.
  • the columnar desulfurization apparatus of the molten iron according to an embodiment of the present invention, a raceway for receiving the molten iron out of the melt gas flowing out of the molten gas furnace flowing along the large waterway, the agent for separating the melt into molten iron and slag It may include one skimmer.
  • the columnar desulfurization apparatus of the molten iron may include a deregulation supply bin that is installed in the upper portion of the large hot water supply to blow the deregulation into the molten iron that passed through the first skimmer.
  • the columnar desulfurization apparatus of the molten iron may include a second skimmer installed in the large hot water at a predetermined interval with the first skimmer and separating the SiO 2 and slag generated by the deregulation reaction from the deregulation and the molten iron from the molten iron. .
  • the deregulated supply bin is installed between the first skimmer and the second skimmer,
  • the second skimmer may be installed between the first skimmer and the raceway.
  • the interval between the second skimmer and the first skimmer may be set to an interval range of 1 m to 2 m.
  • the first skimmer is connected to the main slag runway for discharging slag separated from the molten iron by the first skimmer,
  • the second skimmer may be connected to the auxiliary slag runaway for discharging slag and SiO 2 separated from the molten iron by the second skimmer.
  • the auxiliary slag runaway may be connected by the main slag runaway with a connector.
  • a cover for preventing scattering of molten iron and slag may be installed at an upper portion of the large bath.
  • the cover may cover the upper end of the first skimmer and the upper end of the second skimmer.
  • the cover may be coupled to be detachably attached to an upper end of the first skimmer and an upper end of the second skimmer.
  • Deregulated blow nozzle is installed at the lower end of the deregulated supply bin
  • the deregulated blow nozzle may be inserted into the cover.
  • At least one protrusion is formed on the bottom surface of the large hot water, and may include a vortex protrusion for inducing the blowing deregulator to meet the molten iron.
  • the vortex protrusion may be formed in a hemispherical or semi-elliptic shape.
  • the vortex protrusion may be formed between the first skimmer and the second skimmer.
  • Deregulators may include powdery or mill scale having a particle size in the range of 1 mm-5 mm.
  • At least one slag separation jaw may be formed on the bottom surface of the large bath.
  • the deregulation reaction is carried out efficiently by blowing a deregulator between the first and second skimmers, and SiO 2 and slag generated by the descaling reaction are subjected to the second skimmer. Can be removed via
  • FIG. 1 is a schematic configuration diagram of an apparatus for columnar desulfurization of molten iron according to a first embodiment of the present invention.
  • FIG. 2 is a schematic plan view of a columnar desulfurization apparatus of molten iron according to a first embodiment of the present invention.
  • FIG. 3 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a second embodiment of the present invention.
  • FIG. 4 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a third embodiment of the present invention.
  • FIG. 1 is a schematic configuration diagram of a columnar desulfurization apparatus of a molten iron according to a first embodiment of the present invention
  • Figure 2 is a schematic plan view of a columnar desulfurization apparatus of a molten iron according to a first embodiment of the present invention.
  • the molten iron column denitrification apparatus is a molten gas discharged from the outlet 11 of the molten gas furnace 10 and flows along the large bath 20. It may include a raceway (30) for receiving the molten iron (1).
  • the molten iron 1 accommodated in the raceway 30 may be supplied to the molten iron transportation device 40.
  • the large skimmer 20 may be provided with a first skimmer 100 for separating the melt flowing along the large molten metal 20 into the molten iron 1 and the slag 3.
  • the deregulation supply bin 200 for blowing the molten iron 1 passed through the first skimmer 100 and the deregulator 210 for inducing a deregulation reaction may be installed at an upper portion of the large bath 20.
  • the columnar talgyu apparatus of the hot metal the first at a distance set up 10000000000000000 weeks shaft 30 from the skimmer 100 is provided on the daetang Figure 20, the hot metal to SiO 2 and the slag 3 produced by talgyu reaction It may include a second skimmer 300 for separation from (1).
  • the first skimmer 100 and the second skimmer 300 are installed in the large hot waterway 20 to use the molten iron 1 and the molten iron using different specific gravity differences during the discharge process of discharging the molten iron melted in the molten gas furnace 10. It serves to separate into slag (3).
  • the first skimmer 100 is installed in the large hot waterway 20 between the melt gas furnace 10 and the raceway 30, and may be located close to the outlet 11 of the melt gas furnace 10. .
  • the first skimmer 100 may be installed at a distance set from the molten gas furnace 10 toward the raceway 30.
  • the deregulation supply bin 200 may be installed between the first skimmer 100 and the second skimmer 300 in order to effectively induce the deregulation reaction of the deregulator 210 and the molten iron 1.
  • the deregulator 210 may include a powdery ore or mill scale having a particle size in the range of 1 mm to 5 mm as the deregulator for effective de-silification reaction with the molten iron (1).
  • the deregulation supply bin 200 is a vertical direction (FIG. 1 to Y direction).
  • the deregulation supply bin 200 is located above the large bath 20 and blows the deregulator 210, such as iron oxide, into the molten iron 1 of the large bath at high speed, thereby deregulating 210 and the molten iron 1. Desorption reaction can proceed.
  • the deregulator 210 such as iron oxide
  • the deregulation supply bin 200 may be located directly above the distal end of the second skimmer 300 so that the molten iron 1 may blow in the deregulation immediately before passing through the second skimmer 300.
  • the tip of the second skimmer 300 refers to an end where the molten iron starts to be supplied to the second skimmer 300, that is, an end close to the first skimmer 100.
  • the second skimmer 300 is installed in the large bath 20 between the first skimmer 100 and the raceway 30, and may be installed at intervals set from the raceway 30 toward the first skimmer 100. Can be.
  • the interval between the second skimmer 300 and the first skimmer 100 may be set to, for example, an interval of 1 m to 2 m so as to have a sufficient deregulation reaction time between the molten iron 1 and the deregulator 210. .
  • main slag tandem 110 for discharging the slag 3 separated from the molten iron 1 by the first skimmer 100 may be connected to the first skimmer 100.
  • An auxiliary slag runway 320 for discharging SiO 2 and slag 3 separated from the molten iron 1 by the second skimmer 300 may be connected to the second skimmer 300.
  • Auxiliary slag runway 320 is the main slag of the first skimmer 100 to discharge the SiO 2 and slag 3 separated from the molten iron 1 by the second skimmer 300 to the main slag runway 110. It may be connected by the slag tapping 110 and the connector 321.
  • the connector 321 may be installed to be inclined at a predetermined angle with the auxiliary slag runway 320 to connect the auxiliary slag runway 320 with the main slag runway 110.
  • the first skimmer 100 is installed in the large waterway 20 between the melt gas furnace 10 and the raceway 30, and the second skimmer 300 is provided at a predetermined interval from the first skimmer 100. 1 is installed in the bath 20 between the skimmer 100 and the raceway.
  • the deregulation supply bin 200 is installed between the first skimmer 100 and the second skimmer 300 and is positioned at a height set at an upper portion of the large bath 20.
  • the melt discharged from the outlet 11 of the molten gas furnace 10 flows along the large bath 20, and sequentially passes through the first skimmer 100 and the second skimmer 300.
  • the melt is separated into molten iron 1 and slag 3, and the slag separated from the molten iron 1 is discharged to the main slag tap water 110.
  • the molten iron 1 separated from the slag 3 passes through the first skimmer 100 and then flows into the large bath 20 between the first skimmer 100 and the second skimmer 300.
  • the deregulation supply 210 such as iron oxide spectroscopy is blown into the molten iron 1 passing through the first skimmer 100 in the deregulation supply bin 200 located above the large bath 20 at a high speed. Therefore, the deregulation reaction of the deregulator 210 and the molten iron 1 can proceed efficiently.
  • the SiO 2 and the slag (3) generated by the de-silification reaction are separated by the molten iron (1) and the second skimmer (300), and the separated SiO 2 and the slag (3) is the auxiliary slag turbidity (320) Is discharged through.
  • the SiO 2 and the slag 3 discharged through the auxiliary slag runway 320 are discharged to the main slag runway 110 through the connection pipe 321, the slag treatment may be smoothly performed.
  • the SiO 2 and the slag 3 generated by the de-silicon reaction are discharged to the auxiliary slag turbidity 320, the SiO 2 and the slag 3 are attached to the raceway 30 as in the related art.
  • the phenomenon that flows into the molten iron carrier 40 can be prevented.
  • the interval between the second skimmer 300 and the first skimmer 100 is set to, for example, an interval range of 1 m to 2 m, sufficient deregulation reaction time of the molten iron 1 and the deregulator 210 can be ensured. have.
  • FIG. 3 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a second embodiment of the present invention.
  • the columnar denitrification apparatus of the molten iron according to the second embodiment of the present invention is the same as that described in the columnar denitrification apparatus of the molten iron according to the first embodiment of the present invention, except for the matters described below in detail. .
  • the cover 400 may be installed at an upper portion of the large bathway 20 to prevent scattering of the slag 3 due to the molten iron 1 and the desulfurization reaction in the large bathway 20. have.
  • the cover 400 may be installed at an upper portion of the large bath 20 between the first skimmer 100 and the second skimmer 300.
  • a first slag separating bar 120 for separating the molten iron 1 and the slag 3 is installed at one end of the first skimmer 100, and a molten iron 1 is provided at one end of the second skimmer 300.
  • a second slag separation bar 330 for separation of the slag 3 may be installed.
  • One end of the cover 400 is installed at the other end of the second skimmer 300 so that the cover 400 can cover the upper end of the first skimmer 100 and the upper end of the second skimmer 300.
  • the other end of the cover 400 may be installed at an upper end of one end of the first skimmer 100.
  • one end of the cover 400 and one end of the first skimmer 100 indicate an end portion close to the second skimmer 300, and the other end of the cover 400 and the second skimmer 300 are formed.
  • the other end refers to an end closer to the first skimmer 100.
  • the cover 400 may be coupled to be detachably attached to an upper end of the first skimmer 100 and an upper end of the second skimmer 300 for periodic cleaning.
  • the cover 400 is provided at the lower end of the deregulation supply bin 200 so that the deregulator 210 can be blown in a state in which the first skimmer 100 and the second skimmer 300 are covered with the cover 400.
  • the deregulated blow nozzle 220 may be inserted and coupled.
  • the cover 400 may be provided with a coupling hole (not shown) for inserting the deregulated blowing nozzle 220.
  • the deregulation blowing nozzle 220 installed at the lower end of the deregulation supply bin 200 is inserted into and coupled to the cover 400, the deregulation agent 210 may be effectively blown into the molten iron of the large bath 20.
  • the deregulator 210 at the deregulated blow nozzle 220 causes the first skimmer 100 and the second skimmer 300. Even if blown into the large bath 20 between), it is possible to prevent the molten iron (1) and the deregulated slag (3) is scattered by the deregulator 210.
  • At least one protrusion is formed on the bottom surface of the large bath 20, so that the slag 3 can be easily separated from the molten iron 1 in the first skimmer 100 or the second skimmer 300.
  • the slag separating jaw (21, 23) may be included.
  • the slag separating jaw 21 and 23 may be formed in a triangle or the like so that the slag 3 can be easily separated from the molten iron 1 in the first skimmer 100 or the second skimmer 300.
  • the slag separating jaw 21 may be installed between the first skimmer 100 and the second skimmer 300 so that the slag 3 can be easily separated from the molten iron in the first skimmer 100.
  • the slag separating jaw 23 may be installed between the second skimmer 300 and the raceway 30 so that the slag 3 can be easily separated from the molten iron in the second skimmer 300.
  • FIG. 4 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a third embodiment of the present invention.
  • the columnar desulfurization apparatus of the molten iron according to the third embodiment of the present invention is the same as that described in the columnar denitrification apparatus of the molten iron according to the first and second embodiments of the present invention, except for the matters specifically described below. Let's do it.
  • the columnar desulfurization apparatus of the molten iron according to the third exemplary embodiment of the present invention may include a vortex protrusion 25.
  • Vortex projection 25 is the bottom of the large waterway 20 to induce the deregulator 210, which is blown so that the deregulation can effectively effect the deregulation reaction meets the molten iron (1) flowing along the large waterway (20) At least one protrusion may be formed on the surface.
  • the vortex protrusion 25 may be formed in a hemispherical shape or a semi-elliptic shape so as to induce the blowing deregulator 210 to better meet the molten iron 1 flowing along the large bath 20.
  • Vortex protrusion 25 is formed between the first skimmer 100 and the second skimmer 300 in order to allow the deregulation agent 210 to be blown better with the molten iron 1 through the first skimmer 100. Can be.
  • the vortex protrusion 25 may be installed directly below the deregulation blowing nozzle 220 such that the deregulator 210 is blown well with the molten iron 1.
  • the deregulation reaction efficiency is increased. Can be increased.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Analytical Chemistry (AREA)

Abstract

An apparatus for molten iron runner desilication is provided. In molten iron runner desilication, according to the present invention, provided are: a first skimmer, which is provided in a main runner and separates a molten product into molten iron and slag; a desiliconizing agent supply bin for blowing a desilication agent into the molten iron; and a second skimmer for separating SiO2 and slag which are generated by a desilication reaction.

Description

용선의 주상 탈규 장치Columnar desulfurization device of molten iron

본 발명은 용선의 주상 탈규 장치에 관한 것이다.The present invention relates to a columnar desulfurization apparatus for molten iron.

일반적으로, 파이넥스 공법(FINEX)에서 얻어지는 용선은 실리콘(Si) 성분 함량이 높아 노외에서 탈규 작업이 요구된다. In general, the molten iron obtained from the FINEX method has a high content of silicon (Si) and thus requires desulfurization outside the furnace.

대표적인 노외 탈규 작업으로, 용선이 흐르는 용선 대탕도에 탈규제, 예컨대 산화철을 투입하여 탈규제와 용선의 탈규 반응을 유도하는 주상 탈규 작업을 들 수 있다.Representative out-of-furnace desulfurization operations include columnar desulfurization operations that induce desulfurization, such as iron oxide, to induce desulfurization reactions between molten iron and molten iron.

이러한 주상 탈규 작업은 경주통의 부착, 용선 운송 장치(TLC: Torped Ladle Car) 내에서의 슬래그 포밍(Foaming) 현상 발생 및 제강공정에서의 슬래그의 처리량 증가문제를 야기해 실제로 잘 사용이 되고 있지 못한 실정이다.This columnar deregulation has caused problems of sticking of raceways, slag foaming in the Torped Ladle Car (TLC), and increased throughput of slag in the steelmaking process. It is true.

즉, 파이넥스 공법(FINEX)에서 얻어지는 용선은 고로에 비해 Si 성분 함량(중량%)이 높아 후 공정인 제강공정에서 조업 부하를 야기하게 된다. In other words, the molten iron obtained in the FINEX method has a higher Si content (% by weight) than the blast furnace, which causes an operation load in a subsequent steelmaking process.

파이넥스 공법에서 얻어지는 용선의 Si 성분 함량(중량%)이 고로보다 높은 이유는, 파이넥스 공법에서 쇳물, 즉 용선을 생산하는 용융가스화로의 연소대 온도가 고로에 비해 높기 때문이다. The Si component content (wt%) of the molten iron obtained by the Finex method is higher than that of the blast furnace because the combustion zone temperature of molten gas furnace that produces molten iron, that is, molten iron, in the Finex method is higher than that of the blast furnace.

예컨대, 용선온도 1,500℃를 기준으로 고로 용선의 Si 성분 함량은 약 0.5중량% 인데 비해, FINEX 용선의 Si 성분 함량은 약 0.8중량% 로 고로에 비해 높게 나타나고 있다.For example, the Si content of the blast furnace molten iron is about 0.5% by weight based on the molten iron temperature of 1,500 ° C, while the Si content of the FINEX molten iron is about 0.8% by weight, which is higher than that of the blast furnace.

파이넥스 용선의 Si 성분 함량을 낮추기 위한 방안으로 주상 탈규 방법이 제안되었다. The columnar desulfurization method has been proposed to reduce the Si content of the Finex molten iron.

종래의 주상 탈규 방법은, 용선이 흘러가는 대탕도에 한 개의 스키머(Skimmer)를 설치하고, 이 스키머를 통해 용선과 슬래그로 분리된다. In the conventional columnar denitrification method, a skimmer is installed in a large hot water flowing through molten iron, and the skimmer is separated into molten iron and slag through the skimmer.

분리된 슬래그는 슬래그 탕도로 흘려 보내고, 용선은 대탕도로 흘려 보내, 용선 운송 장치에서 공급되기 직전에, 탈규제로 소결광과 같은 분산화철을 투입하여 용선 중 Si 함량을 낮추는 것이다.The separated slag is flowed into the slag flow, the molten iron is flowed into the large bath, and just before being supplied from the molten iron transportation device, the dispersing iron, such as sintered ore, is added by deregulation to lower the Si content of the molten iron.

그러나, 종래의 주상 탈규 방법은 하나의 스키머를 사용하기 때문에, 경주통의 부착, 용선 운송 장치(TLC) 내에서의 슬래그 포밍 현상 발생 및 제강 공정에서의 슬래그의 처리량 증가 등과 같은 문제점이 있었다. However, the conventional columnar denitrification method uses a skimmer, so there are problems such as the attachment of a raceway barrel, the occurrence of slag forming in the molten iron transport apparatus (TLC), and the increase in the throughput of slag in the steelmaking process.

본 발명은 2개의 스키머를 사용하고, 제1, 제2 스키머 사이에 탈규제를 고속 취입하여 탈규 반응을 효율적으로 진행하고, 탈규 반응에 의해 발생된 SiO2 및 슬래그를 제2 스키머를 통해 제거할 수 있는 용선의 주상 탈규 장치를 제공하고자 한다.In the present invention, two skimmers are used, and a high speed blowing of deregulation is performed between the first and second skimmers so that the desulfurization reaction can be efficiently carried out, and SiO 2 and slag generated by the descaling reaction can be removed through the second skimmer. It is intended to provide a columnar desulfurization apparatus for molten iron.

본 발명의 일 구현예에 따른 용선의 주상 탈규 장치는, 용융 가스 화로에서 배출되어 대탕도를 따라 흐르는 용융물 중 용선을 수용하는 경주통과, 대탕도에 설치되어 용융물을 용선과 슬래그로 분리하기 위한 제1 스키머를 포함할 수 있다. The columnar desulfurization apparatus of the molten iron according to an embodiment of the present invention, a raceway for receiving the molten iron out of the melt gas flowing out of the molten gas furnace flowing along the large waterway, the agent for separating the melt into molten iron and slag It may include one skimmer.

또한, 용선의 주상 탈규 장치는, 대탕도의 상부에 설치되어 제1 스키머를 통과한 용선에 탈규제를 취입하기 탈규제 공급빈을 포함할 수 있다. In addition, the columnar desulfurization apparatus of the molten iron may include a deregulation supply bin that is installed in the upper portion of the large hot water supply to blow the deregulation into the molten iron that passed through the first skimmer.

용선의 주상 탈규 장치는, 제1 스키머와 설정된 간격을 두고 대탕도에 설치되고, 탈규제와 용선의 탈규 반응에 의하여 생성된 SiO2와 슬래그를 용선과 분리하기 위한 제2 스키머를 포함할 수 있다. The columnar desulfurization apparatus of the molten iron may include a second skimmer installed in the large hot water at a predetermined interval with the first skimmer and separating the SiO 2 and slag generated by the deregulation reaction from the deregulation and the molten iron from the molten iron. .

탈규제 공급빈은 제1 스키머와 제2 스키머의 사이에 설치되고, The deregulated supply bin is installed between the first skimmer and the second skimmer,

제2 스키머는 제1 스키머와 경주통의 사이에 설치되는 것일 수 있다. The second skimmer may be installed between the first skimmer and the raceway.

제2 스키머와 제1 스키머 사이의 간격은, 1m~2m의 간격 범위로 설정되는 것일 수 있다. The interval between the second skimmer and the first skimmer may be set to an interval range of 1 m to 2 m.

제1 스키머에는 제1 스키머에 의하여 용선과 분리된 슬래그를 배출하기 위한 주 슬래그 탕도가 연결되고, The first skimmer is connected to the main slag runway for discharging slag separated from the molten iron by the first skimmer,

제2 스키머에는 제2 스키머에 의하여 용선과 분리된 SiO2와 슬래그를 배출하기 위한 보조 슬래그 탕도가 연결되는 것일 수 있다. The second skimmer may be connected to the auxiliary slag runaway for discharging slag and SiO 2 separated from the molten iron by the second skimmer.

보조 슬래그 탕도는 주 슬래그 탕도와 연결관에 의하여 연결되는 것일 수 있다.The auxiliary slag runaway may be connected by the main slag runaway with a connector.

대탕도의 상부에는 용선 및 슬래그의 비산을 방지하기 위한 커버가 설치되는 것일 수 있다.A cover for preventing scattering of molten iron and slag may be installed at an upper portion of the large bath.

커버는 제1 스키머의 상단부와 제2 스키머의 상단부 사이를 덮어주는 것일 수 있다.The cover may cover the upper end of the first skimmer and the upper end of the second skimmer.

커버는 제1 스키머의 상단부와 제2 스키머의 상단부에 탈, 부착이 가능하게 결합되는 것일 수 있다. The cover may be coupled to be detachably attached to an upper end of the first skimmer and an upper end of the second skimmer.

탈규제 공급빈의 하단부에는 탈규제 취입 노즐이 설치되고, Deregulated blow nozzle is installed at the lower end of the deregulated supply bin,

탈규제 취입 노즐은 커버에 삽입 결합되는 것일 수 있다. The deregulated blow nozzle may be inserted into the cover.

대탕도의 바닥면에 적어도 하나 이상 돌출 형성되고, 취입되는 탈규제가 용선과 잘 만나도록 유도하기 위한 와류 돌기를 포함할 수 있다. At least one protrusion is formed on the bottom surface of the large hot water, and may include a vortex protrusion for inducing the blowing deregulator to meet the molten iron.

와류 돌기는 반구형 또는 반타원형으로 형성되는 것일 수 있다.The vortex protrusion may be formed in a hemispherical or semi-elliptic shape.

와류 돌기는 제1 스키머와 제2 스키머 사이에 형성되는 것일 수 있다. The vortex protrusion may be formed between the first skimmer and the second skimmer.

탈규제는 1mm-5mm 범위의 입도를 가지는 분소결광 또는 밀스케일(Mill scale)을 포함할 수 있다. Deregulators may include powdery or mill scale having a particle size in the range of 1 mm-5 mm.

대탕도의 바닥면에는 슬래그 분리턱이 적어도 하나 이상 돌출 형성되는 것일 수 있다. At least one slag separation jaw may be formed on the bottom surface of the large bath.

본 발명의 구현예에 따르면, 2개의 스키머를 사용하기 때문에 1, 제2 스키머 사이에 탈규제를 고속 취입하여 탈규 반응을 효율적으로 진행하고, 탈규 반응에 의해 발생된 SiO2 및 슬래그를 제2 스키머를 통해 제거할 수 있다.According to the embodiment of the present invention, since two skimmers are used, the deregulation reaction is carried out efficiently by blowing a deregulator between the first and second skimmers, and SiO 2 and slag generated by the descaling reaction are subjected to the second skimmer. Can be removed via

이에 따라, 종래 주상 탈규 방법에 따라 발생된, 경주통의 부착, 용선 운송 장치(TLC) 내에서의 슬래그 포밍 현상 발생 및 제강 공정에서의 슬래그의 처리량 증가 등의 문제점을 해소할 수 있다. As a result, problems such as adhesion of a raceway, occurrence of slag forming in a molten iron transport apparatus (TLC), and increased throughput of slag in a steelmaking process, which are generated according to the conventional columnar deregulation method, can be solved.

도 1은 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치의 개략적인 구성도이다. 1 is a schematic configuration diagram of an apparatus for columnar desulfurization of molten iron according to a first embodiment of the present invention.

도 2는 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치의 개략적인 평면도이다. 2 is a schematic plan view of a columnar desulfurization apparatus of molten iron according to a first embodiment of the present invention.

도 3은 본 발명의 제2 실시예에 따른 용선의 주상 탈규 장치의 개략적인 일부 구성도이다. 3 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a second embodiment of the present invention.

도 4는 본 발명의 제3 실시예에 따른 용선의 주상 탈규 장치의 개략적인 일부 구성도이다. 4 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a third embodiment of the present invention.

이하, 첨부한 도면을 참조하여, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 설명한다. 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 이해할 수 있는 바와 같이, 후술하는 실시예는 본 발명의 개념과 범위를 벗어나지 않는 한도 내에서 다양한 형태로 변형될 수 있다. 가능한 한 동일하거나 유사한 부분은 도면에서 동일한 도면부호를 사용하여 나타낸다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art can easily understand, the embodiments described below may be modified in various forms without departing from the spirit and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

이하에서 사용되는 전문용어는 단지 특정 실시예를 언급하기 위한 것이며, 본 발명을 한정하는 것을 의도하지 않는다. 여기서 사용되는 단수 형태들은 문구들이 이와 명백히 반대의 의미를 나타내지 않는 한 복수 형태들도 포함한다. 명세서에서 사용되는 "포함하는" 의 의미는 특정 특성, 영역, 정수, 단계, 동작, 요소 및/또는 성분을 구체화하며, 다른 특정 특성, 영역, 정수, 단계, 동작, 요소, 성분 및/또는 군의 존재나 부가를 제외시키는 것은 아니다.The terminology used below is merely to refer to specific embodiments, and is not intended to limit the present invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the meaning of “comprising” embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

이하에서 사용되는 기술용어 및 과학용어를 포함하는 모든 용어들은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 일반적으로 이해하는 의미와 동일한 의미를 가진다. 사전에 정의된 용어들은 관련기술문헌과 현재 개시된 내용에 부합하는 의미를 가지는 것으로 추가 해석되고, 정의되지 않는 한 이상적이거나 매우 공식적인 의미로 해석되지 않는다.All terms including technical terms and scientific terms used below have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms defined in advance are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

도 1은 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치의 개략적인 구성도이고, 도 2는 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치의 개략적인 평면도이다.1 is a schematic configuration diagram of a columnar desulfurization apparatus of a molten iron according to a first embodiment of the present invention, Figure 2 is a schematic plan view of a columnar desulfurization apparatus of a molten iron according to a first embodiment of the present invention.

도 1, 도 2를 참고하면, 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치는, 용융 가스 화로(10)의 출선구(11)에서 배출되어 대탕도(20)를 따라 흐르는 용융물 중 용선(1)을 수용하는 경주통(30)을 포함할 수 있다. Referring to FIGS. 1 and 2, the molten iron column denitrification apparatus according to the first embodiment of the present invention is a molten gas discharged from the outlet 11 of the molten gas furnace 10 and flows along the large bath 20. It may include a raceway (30) for receiving the molten iron (1).

경주통(30)에 수용된 용선(1)은 용선 운송 장치(40)에 공급될 수 있다. The molten iron 1 accommodated in the raceway 30 may be supplied to the molten iron transportation device 40.

또한, 대탕도(20)에는 대탕도(20)를 따라 흐르는 용융물을 용선(1)과 슬래그(3)로 분리하기 위한 제1 스키머(skimmer)(100)가 설치될 수 있다. In addition, the large skimmer 20 may be provided with a first skimmer 100 for separating the melt flowing along the large molten metal 20 into the molten iron 1 and the slag 3.

대탕도(20)의 상부에는 제1 스키머(100)를 통과한 용선(1)과 탈규 반응을 유도하기 위한 탈규제(210)를 취입하기 위한 탈규제 공급빈(200)이 설치될 수 있다. The deregulation supply bin 200 for blowing the molten iron 1 passed through the first skimmer 100 and the deregulator 210 for inducing a deregulation reaction may be installed at an upper portion of the large bath 20.

또한, 용선의 주상 탈규 장치는, 제1 스키머(100)로부터 경주통(30)쪽으로 설정된 간격을 두고 대탕도(20)에 설치되고, 탈규 반응에 의하여 생성된 SiO2와 슬래그(3)를 용선(1)과 분리하기 위한 제2 스키머(300)를 포함할 수 있다. Further, the columnar talgyu apparatus of the hot metal, the first at a distance set up 10000000000000000 weeks shaft 30 from the skimmer 100 is provided on the daetang Figure 20, the hot metal to SiO 2 and the slag 3 produced by talgyu reaction It may include a second skimmer 300 for separation from (1).

제1 스키머(100)와 제2 스키머(300)는 대탕도(20)에 설치되어 용융 가스 화로(10) 내에 용융되어 있는 용선을 배출하는 출선 공정 중 서로 다른 비중 차를 이용해 용선(1)과 슬래그(3)로 분리하는 역할을 한다.The first skimmer 100 and the second skimmer 300 are installed in the large hot waterway 20 to use the molten iron 1 and the molten iron using different specific gravity differences during the discharge process of discharging the molten iron melted in the molten gas furnace 10. It serves to separate into slag (3).

제1 스키머(100)는 용융 가스 화로(10)와 경주통(30)의 사이의 대탕도(20)에 설치되며, 용융 가스 화로(10)의 출선구(11)에 근접하게 위치될 수 있다. The first skimmer 100 is installed in the large hot waterway 20 between the melt gas furnace 10 and the raceway 30, and may be located close to the outlet 11 of the melt gas furnace 10. .

즉, 제1 스키머(100)는 용융 가스 화로(10)로부터 경주통(30)쪽으로 설정된 거리를 두고 설치될 수 있다. That is, the first skimmer 100 may be installed at a distance set from the molten gas furnace 10 toward the raceway 30.

또한, 탈규제 공급빈(200)은 탈규제(210)와 용선(1)의 탈규 반응을 효과적으로 유도하기 위하여 제1 스키머(100)와 제2 스키머(300)의 사이에 설치될 수 있다. In addition, the deregulation supply bin 200 may be installed between the first skimmer 100 and the second skimmer 300 in order to effectively induce the deregulation reaction of the deregulator 210 and the molten iron 1.

탈규제(210)는 용선(1)과 효과적인 탈규 반응을 위하여, 탈규제로 1mm 내지 5mm 범위의 입도를 가지는 분소결광 또는 밀스케일(Mill scale) 등을 포함할 수 있다. The deregulator 210 may include a powdery ore or mill scale having a particle size in the range of 1 mm to 5 mm as the deregulator for effective de-silification reaction with the molten iron (1).

탈규제 공급빈(200)은 용선(1)과 탈규제(210)의 탈규 반응을 효과적으로 유도하기 위하여 대탕도(20)의 상부, 즉 대탕도(20)의 용선(1)으로부터 수직 방향(도 1에서 Y 방향)으로 설정된 높이에 위치될 수 있다. The deregulation supply bin 200 is a vertical direction (FIG. 1 to Y direction).

탈규제 공급빈(200)은 대탕도(20)의 상부에 위치되어, 산화철 등과 같은 탈규제(210)를 대탕도의 용선(1)에 고속으로 취입하여, 탈규제(210)와 용선(1)의 탈규 반응을 진행시킬 수 있다. The deregulation supply bin 200 is located above the large bath 20 and blows the deregulator 210, such as iron oxide, into the molten iron 1 of the large bath at high speed, thereby deregulating 210 and the molten iron 1. Desorption reaction can proceed.

탈규제 공급빈(200)은 용선(1)이 제2 스키머(300)를 통과하기 직전에 탈규제를 취입할 수 있도록 제2 스키머(300)의 선단부 직상부에 위치될 수 있다. The deregulation supply bin 200 may be located directly above the distal end of the second skimmer 300 so that the molten iron 1 may blow in the deregulation immediately before passing through the second skimmer 300.

여기서, 제2 스키머(300)의 선단부라 함은 용선이 제2 스키머(300)로 공급되기 시작하는 단부, 즉, 제1 스키머(100)와 가까운 단부를 가리킨다. Here, the tip of the second skimmer 300 refers to an end where the molten iron starts to be supplied to the second skimmer 300, that is, an end close to the first skimmer 100.

이때, 탈규제(210)와 용선(1)의 탈규 반응 시 SiO2와 슬래그(3)가 생성되는데, 이렇게 생성된 SiO2와 슬래그(3)는 제2 스키머(300)에 의하여 용선과 분리될 수 있다. At this time, the deregulation 210 and the molten iron (1) talgyu reaction when there is generated the SiO 2 and the slag 3, the thus produced SiO 2 and the slag 3 will be hot metal and separated by a second skimmer 300 Can be.

제2 스키머(300)는 제1 스키머(100)와 경주통(30)의 사이의 대탕도(20)에 설치되며, 경주통(30)으로부터 제1 스키머(100)쪽으로 설정된 간격을 두고 설치될 수 있다. The second skimmer 300 is installed in the large bath 20 between the first skimmer 100 and the raceway 30, and may be installed at intervals set from the raceway 30 toward the first skimmer 100. Can be.

제2 스키머(300)와 제1 스키머(100) 사이의 간격은, 용선(1)과 탈규제(210)의 충분한 탈규 반응 시간을 가질 수 있도록 예컨대, 1m~2m 의 간격 범위로 설정될 수 있다. The interval between the second skimmer 300 and the first skimmer 100 may be set to, for example, an interval of 1 m to 2 m so as to have a sufficient deregulation reaction time between the molten iron 1 and the deregulator 210. .

또한, 제1 스키머(100)에는 제1 스키머(100)에 의하여 용선(1)과 분리된 슬래그(3)를 배출하기 위한 주 슬래그 탕도(110)가 연결될 수 있다. In addition, the main slag tandem 110 for discharging the slag 3 separated from the molten iron 1 by the first skimmer 100 may be connected to the first skimmer 100.

제2 스키머(300)에는 제2 스키머(300)에 의하여 용선(1)과 분리된 SiO2와 슬래그(3)를 배출하기 위한 보조 슬래그 탕도(320)가 연결될 수 있다. An auxiliary slag runway 320 for discharging SiO 2 and slag 3 separated from the molten iron 1 by the second skimmer 300 may be connected to the second skimmer 300.

보조 슬래그 탕도(320)는 제2 스키머(300)에 의하여 용선(1)과 분리된 SiO2와 슬래그(3)를 주 슬래그 탕도(110)로 배출하기 위하여 제1 스키머(100)의 주 슬래그 탕도(110)와 연결관(321)에 의하여 연결될 수 있다. Auxiliary slag runway 320 is the main slag of the first skimmer 100 to discharge the SiO 2 and slag 3 separated from the molten iron 1 by the second skimmer 300 to the main slag runway 110. It may be connected by the slag tapping 110 and the connector 321.

연결관(321)은 보조 슬래그 탕도(320)를 주 슬래그 탕도(110)와 연결하기 위하여 보조 슬래그 탕도(320)와 설정된 각도로 경사지게 설치될 수 있다. The connector 321 may be installed to be inclined at a predetermined angle with the auxiliary slag runway 320 to connect the auxiliary slag runway 320 with the main slag runway 110.

이하에서, 도 1 및 도 2를 참조하여, 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치의 작동에 대해서 설명한다.1 and 2, the operation of the columnar desulfurization apparatus of the molten iron according to the first embodiment of the present invention will be described.

제1 스키머(100)는 용융 가스 화로(10)와 경주통(30)의 사이의 대탕도(20)에 설치되며, 제2 스키머(300)는 제1 스키머(100)와 설정된 간격을 두고 제1 스키머(100)와 경주통 사이의 대탕도(20)에 설치된다. The first skimmer 100 is installed in the large waterway 20 between the melt gas furnace 10 and the raceway 30, and the second skimmer 300 is provided at a predetermined interval from the first skimmer 100. 1 is installed in the bath 20 between the skimmer 100 and the raceway.

또한, 탈규제 공급빈(200)은 제1 스키머(100)와 제2 스키머(300)의 사이에 설치됨과 아울러 대탕도(20)의 상부에 설정된 높이에 위치된다. In addition, the deregulation supply bin 200 is installed between the first skimmer 100 and the second skimmer 300 and is positioned at a height set at an upper portion of the large bath 20.

이에 따라, 용융 가스 화로(10)의 출선구(11)에서 배출되는 용융물은 대탕도(20)를 따라 흐르게 되며, 제1 스키머(100)와 제2 스키머(300)를 순차적으로 통과하게 된다. Accordingly, the melt discharged from the outlet 11 of the molten gas furnace 10 flows along the large bath 20, and sequentially passes through the first skimmer 100 and the second skimmer 300.

제1 스키머(100)에서 용융물은 용선(1)과 슬래그(3)로 분리되며, 용선(1)과 분리된 슬래그는 주 슬래그 탕도(110)로 배출된다. In the first skimmer 100, the melt is separated into molten iron 1 and slag 3, and the slag separated from the molten iron 1 is discharged to the main slag tap water 110.

그리고, 슬래그(3)와 분리된 용선(1)은 제1 스키머(100)를 통과한 후, 제1 스키머(100)와 제2 스키머(300) 사이의 대탕도(20)로 흐르게 된다. The molten iron 1 separated from the slag 3 passes through the first skimmer 100 and then flows into the large bath 20 between the first skimmer 100 and the second skimmer 300.

이때, 대탕도(20)의 상부에 위치한 탈규제 공급빈(200)에서 제1 스키머(100)를 통과한 용선(1)에 산화철 분광과 같은 탈규제(210)를 설정된 속도의 고속으로 취입하게 되므로, 탈규제(210)와 용선(1)의 탈규 반응이 효율적으로 진행될 수 있다. At this time, the deregulation supply 210 such as iron oxide spectroscopy is blown into the molten iron 1 passing through the first skimmer 100 in the deregulation supply bin 200 located above the large bath 20 at a high speed. Therefore, the deregulation reaction of the deregulator 210 and the molten iron 1 can proceed efficiently.

그리고, 탈규 반응에 의하여 생성된 SiO2와 슬래그(3)는 용선(1)과 제2 스키머(300)에 의하여 분리되고, 분리된 SiO2와 슬래그(3)는 보조 슬래그 탕도(320)를 통하여 배출된다. In addition, the SiO 2 and the slag (3) generated by the de-silification reaction are separated by the molten iron (1) and the second skimmer (300), and the separated SiO 2 and the slag (3) is the auxiliary slag turbidity (320) Is discharged through.

보조 슬래그 탕도(320)를 통하여 배출되는 SiO2와 슬래그(3)는 연결관(321)을 통하여 주 슬래그 탕도(110)로 배출되므로, 슬래그 처리를 원활하게 할 수 있다. Since the SiO 2 and the slag 3 discharged through the auxiliary slag runway 320 are discharged to the main slag runway 110 through the connection pipe 321, the slag treatment may be smoothly performed.

이와 같이, 탈규 반응에 의하여 생성된 SiO2와 슬래그(3)가 보조 슬래그 탕도(320)로 배출되므로, 종래 기술에서와 같이 SiO2와 슬래그(3)가 경주통(30)에 부착되는 현상이나 용선 운송 장치(40)로 흘러 들어가는 현상이 방지될 수 있다. As such, since the SiO 2 and the slag 3 generated by the de-silicon reaction are discharged to the auxiliary slag turbidity 320, the SiO 2 and the slag 3 are attached to the raceway 30 as in the related art. However, the phenomenon that flows into the molten iron carrier 40 can be prevented.

따라서, 탈규 반응에 의해 생성된 SiO2와 슬래그(3)가 용선 운송 장치(40) 내로 유입되는 현상이 방지되므로, 용선 운송 장치(40) 내 슬래그의 포밍 현상도 방지되며, 제강공정에서 추가 슬래그의 처리 문제도 해소될 수 있다. Therefore, since the phenomenon in which SiO 2 and the slag 3 generated by the denitrification reaction flows into the molten iron transporting device 40 is prevented, the foaming phenomenon of the slag in the molten iron transporting device 40 is also prevented, and further slag in the steelmaking process. The problem of processing can also be solved.

또한, 제2 스키머(300)와 제1 스키머(100) 사이의 간격이 예컨대, 1m~2m 의 간격 범위로 설정됨으로써, 용선(1)과 탈규제(210)의 충분한 탈규 반응 시간을 확보할 수 있다. In addition, since the interval between the second skimmer 300 and the first skimmer 100 is set to, for example, an interval range of 1 m to 2 m, sufficient deregulation reaction time of the molten iron 1 and the deregulator 210 can be ensured. have.

도 3은 본 발명의 제2 실시예에 따른 용선의 주상 탈규 장치의 개략적인 일부 구성도이다. 3 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a second embodiment of the present invention.

본 발명의 제2 실시예에 따른 용선의 주상 탈규 장치는 하기에서 특별히 설명하는 사항 이외에는 본 발명의 제1 실시예에 따른 용선의 주상 탈규 장치에서 설명한 사항과 동일하므로 그 자세한 설명은 생략하기로 한다.The columnar denitrification apparatus of the molten iron according to the second embodiment of the present invention is the same as that described in the columnar denitrification apparatus of the molten iron according to the first embodiment of the present invention, except for the matters described below in detail. .

도 3을 참고하면, 대탕도(20)의 상부에 설치되고, 대탕도(20)에서 용선(1) 및 탈규 반응에 의한 슬래그(3)의 비산을 방지하기 위한 커버(400)를 포함할 수 있다. Referring to FIG. 3, the cover 400 may be installed at an upper portion of the large bathway 20 to prevent scattering of the slag 3 due to the molten iron 1 and the desulfurization reaction in the large bathway 20. have.

커버(400)는 제1 스키머(100)와 제2 스키머(300) 사이의 대탕도(20)의 상부에 설치될 수 있다. The cover 400 may be installed at an upper portion of the large bath 20 between the first skimmer 100 and the second skimmer 300.

또한, 제1 스키머(100)의 일단부에는 용선(1)과 슬래그(3)의 분리를 위한 제1 슬래그 분리바(120)가 설치되고, 제2 스키머(300)의 일단부에는 용선(1)과 슬래그(3)의 분리를 위한 제2 슬래그 분리바(330)가 설치될 수 있다. In addition, a first slag separating bar 120 for separating the molten iron 1 and the slag 3 is installed at one end of the first skimmer 100, and a molten iron 1 is provided at one end of the second skimmer 300. ) And a second slag separation bar 330 for separation of the slag 3 may be installed.

커버(400)가 제1 스키머(100)의 상단부와 제2 스키머(300)의 상단부 사이를 덮어줄 수 있도록, 커버(400)의 일단부는 제2 스키머(300)의 타단부 상단부에 설치되고, 커버(400)의 타단부는 제1 스키머(100)의 일단부 상단부에 설치될 수 있다. One end of the cover 400 is installed at the other end of the second skimmer 300 so that the cover 400 can cover the upper end of the first skimmer 100 and the upper end of the second skimmer 300. The other end of the cover 400 may be installed at an upper end of one end of the first skimmer 100.

여기서, 커버(400)의 일단부와 제1 스키머(100)의 일단부라 함은 제2 스키머(300)와 가까운 쪽의 단부를 가리키며, 커버(400)의 타단부와 제2 스키머(300)의 타단부라 함은 제1 스키머(100)와 가까운 쪽의 단부를 가리킨다. Here, one end of the cover 400 and one end of the first skimmer 100 indicate an end portion close to the second skimmer 300, and the other end of the cover 400 and the second skimmer 300 are formed. The other end refers to an end closer to the first skimmer 100.

커버(400)는 주기적인 청소(cleaning) 등을 위하여 제1 스키머(100)의 상단부와 제2 스키머(300)의 상단부에 탈, 부착이 가능하도록 결합될 수 있다. The cover 400 may be coupled to be detachably attached to an upper end of the first skimmer 100 and an upper end of the second skimmer 300 for periodic cleaning.

또한, 커버(400)에는 제1 스키머(100)와 제2 스키머(300)를 커버(400)로 덮은 상태에서 탈규제(210)를 취입할 수 있도록, 탈규제 공급빈(200)의 하단부에 설치된 탈규제 취입 노즐(220)이 삽입 결합될 수 있다. In addition, the cover 400 is provided at the lower end of the deregulation supply bin 200 so that the deregulator 210 can be blown in a state in which the first skimmer 100 and the second skimmer 300 are covered with the cover 400. The deregulated blow nozzle 220 may be inserted and coupled.

커버(400)에는 탈규제 취입 노즐(220)이 삽입 결합되기 위한 결합구멍(미도시)이 형성될 수 있다. The cover 400 may be provided with a coupling hole (not shown) for inserting the deregulated blowing nozzle 220.

탈규제 공급빈(200)의 하단부에 설치된 탈규제 취입 노즐(220)이 커버(400)에 삽입 결합되므로, 탈규제(210)가 대탕도(20)의 용선에 효과적으로 취입될 수 있다. Since the deregulation blowing nozzle 220 installed at the lower end of the deregulation supply bin 200 is inserted into and coupled to the cover 400, the deregulation agent 210 may be effectively blown into the molten iron of the large bath 20.

커버(400)가 제1 스키머(100)와 제2 스키머(300) 사이를 덮어주고 있으므로, 탈규제 취입 노즐(220)에서 탈규제(210)가 제1 스키머(100)와 제2 스키머(300) 사이의 대탕도(20) 내로 고속으로 취입되어도 탈규제(210)에 의해 용선(1) 및 탈규 슬래그(3)가 비산되는 것을 방지할 수 있다. Since the cover 400 covers the first skimmer 100 and the second skimmer 300, the deregulator 210 at the deregulated blow nozzle 220 causes the first skimmer 100 and the second skimmer 300. Even if blown into the large bath 20 between), it is possible to prevent the molten iron (1) and the deregulated slag (3) is scattered by the deregulator 210.

또한, 대탕도(20)의 바닥면에 적어도 하나 이상 돌출 형성되고, 제1 스키머(100) 또는 제2 스키머(300)에서 슬래그(3)를 용선(1)과 용이하게 분리시킬 수 있도록 하기 위한 슬래그 분리턱(21, 23)을 포함할 수 있다. In addition, at least one protrusion is formed on the bottom surface of the large bath 20, so that the slag 3 can be easily separated from the molten iron 1 in the first skimmer 100 or the second skimmer 300. The slag separating jaw (21, 23) may be included.

슬래그 분리턱(21, 23)은 제1 스키머(100) 또는 제2 스키머(300)에서 슬래그(3)를 용선(1)과 용이하게 분리시킬 수 있도록 삼각형 등으로 형성될 수 있다.The slag separating jaw 21 and 23 may be formed in a triangle or the like so that the slag 3 can be easily separated from the molten iron 1 in the first skimmer 100 or the second skimmer 300.

또한, 슬래그 분리턱(21)은 제1 스키머(100)에서 슬래그(3)를 용선과 용이하게 분리시킬 수 있도록 제1 스키머(100)와 제2 스키머(300) 사이에 설치될 수 있다. In addition, the slag separating jaw 21 may be installed between the first skimmer 100 and the second skimmer 300 so that the slag 3 can be easily separated from the molten iron in the first skimmer 100.

슬래그 분리턱(23)은 제2 스키머(300)에서 슬래그(3)를 용선과 용이하게 분리시킬 수 있도록 제2 스키머(300)와 경주통(30) 사이에 설치될 수 있다. The slag separating jaw 23 may be installed between the second skimmer 300 and the raceway 30 so that the slag 3 can be easily separated from the molten iron in the second skimmer 300.

도 4는 본 발명의 제3 실시예에 따른 용선의 주상 탈규 장치의 개략적인 일부 구성도이다. 4 is a schematic partial configuration diagram of a columnar desulfurization apparatus for molten iron according to a third embodiment of the present invention.

본 발명의 제3 실시예에 따른 용선의 주상 탈규 장치는 하기에서 특별히 설명하는 사항 이외에는 본 발명의 제1, 제2 실시예에 따른 용선의 주상 탈규 장치에서 설명한 사항과 동일하므로 그 자세한 설명은 생략하기로 한다.The columnar desulfurization apparatus of the molten iron according to the third embodiment of the present invention is the same as that described in the columnar denitrification apparatus of the molten iron according to the first and second embodiments of the present invention, except for the matters specifically described below. Let's do it.

도 4를 참고하면, 본 발명의 제3 실시예에 따른 용선의 주상 탈규 장치는 와류 돌기(25)를 포함할 수 있다. Referring to FIG. 4, the columnar desulfurization apparatus of the molten iron according to the third exemplary embodiment of the present invention may include a vortex protrusion 25.

와류 돌기(25)는 탈규제가 효과적인 탈규 반응을 일으킬 수 있도록 취입되는 탈규제(210)가 대탕도(20)를 따라 흐르는 용선(1)과 잘 만나도록 유도하기 위하여 대탕도(20)의 바닥면에는 적어도 하나 이상 돌출 형성될 수 있다. Vortex projection 25 is the bottom of the large waterway 20 to induce the deregulator 210, which is blown so that the deregulation can effectively effect the deregulation reaction meets the molten iron (1) flowing along the large waterway (20) At least one protrusion may be formed on the surface.

와류 돌기(25)는 취입되는 탈규제(210)가 대탕도(20)를 따라 흐르는 용선(1)과 보다 잘 만나도록 유도하기 위하여 반구형 또는 반타원형 등으로 형성될 수 있다.The vortex protrusion 25 may be formed in a hemispherical shape or a semi-elliptic shape so as to induce the blowing deregulator 210 to better meet the molten iron 1 flowing along the large bath 20.

와류 돌기(25)는 취입되는 탈규제(210)가 제1 스키머(100)를 통관한 용선(1)과 보다 잘 만나도록 하기 위하여 제1 스키머(100)와 제2 스키머(300) 사이에 형성될 수 있다. Vortex protrusion 25 is formed between the first skimmer 100 and the second skimmer 300 in order to allow the deregulation agent 210 to be blown better with the molten iron 1 through the first skimmer 100. Can be.

와류 돌기(25)는 취입되는 탈규제(210)가 용선(1)과 잘 교반되도록 탈규제 취입 노즐(220)의 직하부에 설치될 수 있다. The vortex protrusion 25 may be installed directly below the deregulation blowing nozzle 220 such that the deregulator 210 is blown well with the molten iron 1.

이와 같이, 탈규제(210)가 취입되는 대탕도(20)의 바닥에 와류 돌기(25)를 돌출 형성하여, 용선(1)과 탈규제(210)가 잘 혼합되도록 유도함으로써, 탈규 반응 효율이 증대될 수 있다. As such, by forming the vortex protrusion 25 at the bottom of the large bath 20 into which the deregulator 210 is blown, and inducing the molten iron 1 and the deregulator 210 to be mixed well, the deregulation reaction efficiency is increased. Can be increased.

(부호의 설명)(Explanation of the sign)

1: 용선1: charter

3: 슬래그3: slag

20: 대탕도20: large bath

30: 경주통30: racing pail

100: 제1 스키머100: first skimmer

200: 탈규제 공급빈200: deregulated supply bin

210: 탈규제210: deregulation

300: 제2 스키머300: second skimmer

400: 커버 400: cover

Claims (14)

용융 가스 화로에서 배출되어 대탕도를 따라 흐르는 용융물 중 용선을 수용하는 경주통, A raceway that receives molten iron from the melt flowing from the melt gas furnace 상기 대탕도에 설치되고, 상기 용융물을 용선과 슬래그로 분리하기 위한 제1 스키머, A first skimmer installed in the large hot water island, for separating the melt into molten iron and slag, 상기 대탕도의 상부에 설치되고, 상기 제1 스키머를 통과한 상기 용선에 탈규제를 취입하기 탈규제 공급빈, 및 A deregulation supply bin installed at an upper portion of the large hot water degree, for blowing deregulation into the molten iron that has passed through the first skimmer, and 상기 제1 스키머와 설정된 간격을 두고 상기 대탕도에 설치되고, 상기 탈규제와 상기 용선의 탈규 반응에 의하여 생성된 SiO2와 슬래그를 용선과 분리하기 위한 제2 스키머A second skimmer installed in the large hot water at a predetermined interval from the first skimmer and separating SiO 2 and slag generated by the deregulation reaction between the deregulation agent and the molten iron from the molten iron; 를 포함하는 용선의 주상 탈규 장치.Columnar desulfurization apparatus of the molten iron comprising a. 제1항에 있어서,The method of claim 1, 상기 탈규제 공급빈은 상기 제1 스키머와 상기 제2 스키머의 사이에 설치되고, The deregulation supply bin is installed between the first skimmer and the second skimmer, 상기 제2 스키머는 상기 제1 스키머와 상기 경주통의 사이에 설치되 것인, 용선의 주상 탈규 장치.The second skimmer is installed between the first skimmer and the raceway, the columnar de-ice apparatus of the molten iron. 제2항에 있어서, The method of claim 2, 상기 제2 스키머와 상기 제1 스키머 사이의 간격은, 1m~2m의 간격 범위로 설정되는 것인, 용선의 주상 탈규 장치.The gap between the second skimmer and the first skimmer is set to an interval range of 1 m to 2 m, the columnar de-silification apparatus of the molten iron. 제2항에 있어서,The method of claim 2, 상기 제1 스키머에는 상기 제1 스키머에 의하여 상기 용선과 분리된 슬래그를 배출하기 위한 주 슬래그 탕도가 연결되고, The first skimmer is connected to the main slag turbidity for discharging the slag separated from the molten iron by the first skimmer, 상기 제2 스키머에는 상기 제2 스키머에 의하여 용선과 분리된 SiO2와 슬래그를 배출하기 위한 보조 슬래그 탕도가 연결되는 것인, 용선의 주상 탈규 장치.The second skimmer is connected to the SiO 2 separated from the molten iron by the second skimmer and the auxiliary slag turbidity for discharging the slag, the columnar desulfurization apparatus of the molten iron. 제4항에 있어서,The method of claim 4, 상기 보조 슬래그 탕도는 상기 주 슬래그 탕도와 연결관에 의하여 연결되는 것인, 용선의 주상 탈규 장치.The auxiliary slag runaway is the columnar desulfurization apparatus of the molten iron, which is connected by the main slag runway and the connecting pipe. 제1항 내지 제5항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 5, 상기 대탕도의 상부에는 상기 용선 및 슬래그의 비산을 방지하기 위한 커버가 설치되는 것인, 용선의 주상 탈규 장치.The upper part of the large hot water island is provided with a cover for preventing the scattering of the molten iron and slag, columnar desulfurization apparatus of the molten iron. 제6항에 있어서,The method of claim 6, 상기 커버는 상기 제1 스키머의 상단부와 상기 제2 스키머의 상단부 사이를 덮어주는 것인, 용선의 주상 탈규 장치.And the cover covers between the upper end of the first skimmer and the upper end of the second skimmer. 제7항에 있어서,The method of claim 7, wherein 상기 커버는 상기 제1 스키머의 상단부와 상기 제2 스키머의 상단부에 탈, 부착이 가능하게 결합되는 것인, 용선의 주상 탈규 장치.The cover is a columnar desulfurization apparatus of the molten iron that is detachably attached to the upper end of the first skimmer and the upper end of the second skimmer. 제8항에 있어서,The method of claim 8, 상기 탈규제 공급빈의 하단부에는 탈규제 취입 노즐이 설치되고, A deregulation blowing nozzle is installed at the lower end of the deregulation supply bin, 상기 탈규제 취입 노즐은 상기 커버에 삽입 결합되는 것인, 용선의 주상 탈규 장치.The deregulator blowing nozzle is molten iron column desulfurization apparatus that is inserted into the cover. 제1항 내지 제5항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 5, 상기 대탕도의 바닥면에 적어도 하나 이상 돌출 형성되고, 취입되는 상기 탈규제가 상기 용선과 잘 만나도록 유도하기 위한 와류 돌기를 포함하는, 용선의 주상 탈규 장치.At least one protrusion formed on the bottom surface of the large hot water, comprising a vortex projection for inducing the blown deregulator to meet the molten iron, molten iron of the molten iron. 제10항에 있어서,The method of claim 10, 상기 와류 돌기는 반구형 또는 반타원형으로 형성되는 것인, 용선의 주상 탈규 장치.Said vortex protrusion is formed in a hemispherical or semi-elliptic, columnar de-silicon apparatus of molten iron. 제11항에 있어서,The method of claim 11, 상기 와류 돌기는 상기 제1 스키머와 상기 제2 스키머 사이에 형성되는 것인, 용선의 주상 탈규 장치.And the vortex protrusion is formed between the first skimmer and the second skimmer. 제10항에 있어서,The method of claim 10, 상기 탈규제는 1mm-5mm 범위의 입도를 가지는 분소결광 또는 밀스케일(Mill scale)을 포함하는, 용선의 주상 탈규 장치.The deregulator comprises molten iron or mill scale having a particle size in the range of 1 mm-5 mm. 제10항에 있어서,The method of claim 10, 상기 대탕도의 바닥면에는 슬래그 분리턱이 적어도 하나 이상 돌출 형성되는 것인, 용선의 주상 탈규 장치.At least one slag separation jaw is formed to protrude from the bottom surface of the large hot water, molten iron columnar desulfurization apparatus.
PCT/KR2018/014766 2018-07-24 2018-11-28 Apparatus for molten iron runner desilication Ceased WO2020022577A1 (en)

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