WO2014061950A1 - Système d'atomisation de laitier d'aciérie à l'aide de chaleur résiduaire - Google Patents

Système d'atomisation de laitier d'aciérie à l'aide de chaleur résiduaire Download PDF

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Publication number
WO2014061950A1
WO2014061950A1 PCT/KR2013/009145 KR2013009145W WO2014061950A1 WO 2014061950 A1 WO2014061950 A1 WO 2014061950A1 KR 2013009145 W KR2013009145 W KR 2013009145W WO 2014061950 A1 WO2014061950 A1 WO 2014061950A1
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WO
WIPO (PCT)
Prior art keywords
slag
waste heat
dryer
atomizing
transferring
Prior art date
Application number
PCT/KR2013/009145
Other languages
English (en)
Korean (ko)
Inventor
오상윤
문영배
강정훈
Original Assignee
주식회사 에코마이스터
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 에코마이스터 filed Critical 주식회사 에코마이스터
Publication of WO2014061950A1 publication Critical patent/WO2014061950A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/074—Tower structures for cooling, being confined but not sealed
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention relates to an apparatus for atomizing steelmaking slag using waste heat and an atomizing method of steelmaking slag using the same. More specifically, after drying the material including moisture after granulation by recovering waste heat generated during atomizing the molten slag
  • the present invention relates to a steelmaking slag atomizing device that allows the process to proceed and an atomizing method of steelmaking slag using the same.
  • Patent 10-1159594 is a technique for the waste heat recovery device for blast furnace slag used in the steelmaking process.
  • the document discloses a cooling spray unit for cooling the blast furnace slag by injecting cooling water to the blast furnace slag supplied to the housing unit, and a waste heat exchanger installed above the cooling spray unit and performing heat exchange with waste heat of the blast furnace slag, and a waste heat exchanger.
  • a guide pipe part for guiding air to a storage tank provided outside the housing part, and a main injection part for removing foreign matters from the air by injecting dust removal into the guide pipe part, and a control part for controlling the operation of the cooling injection part and the main injection part. It is composed.
  • the slag supply pipe 130 for guiding the movement of the blast furnace slag 120 through the side of the housing unit 110 is installed, the housing along the slag supply pipe 130
  • the blast furnace slag 120 is supplied to the inside of the unit 110.
  • the waste heat exchanger 180 installed above the cooling spray unit 140 is connected to the inlet pipe 190A through which the working fluid is supplied and the discharge pipe 190B through which the working fluid is discharged, and the blast furnace slag 120. Since waste heat and heat exchange is made), the waste heat generated during the cooling operation of the blast furnace slag 120 is recovered and reused, thereby operating to reduce hot water supply costs.
  • the main object of the present invention is to provide a waste heat recovery system applicable to an atomizing device installed in a narrow space.
  • Drying apparatus (Dryer) of the present invention is characterized in that the rotary kiln form.
  • the present invention also provides a method for manufacturing steelmaking slag based on the above system.
  • Steelmaking slag atomizing system using the waste heat of the present invention can be installed in a narrow space and recover the waste heat of 150 ⁇ 200 °C generated by atomizing by using this to remove the moisture of the slag to reduce the power ratio and the environment according to the generation of waste heat The effect of solving the problem of pollution is expected.
  • FIG. 1 is a schematic diagram of a system for recovering waste heat in a conventional steelmaking slag treatment process.
  • FIG. 2 is a view showing the configuration of a drying system of steelmaking slag using waste heat of the present invention.
  • the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
  • FIG. 1 is a schematic diagram of a system for recovering waste heat in a conventional steelmaking slag treatment process. Detailed description thereof is as described above and will be omitted.
  • the drying system of the steelmaking slag using the waste heat of the present invention includes a slag port (1); A tundish 3; Gas nozzles 4 and 5; A cooling fence 7; A bucket elevator 8; The separator 10, the dryer 11, and the dust collector 12 are connected to an atomizing device including a sieve screen 9.
  • the slag port 1 serves to receive and discharge the molten slag.
  • the tundish 3 serves to drop the molten slag discharged from the slag port to a lower portion while temporarily storing the molten slag.
  • the gas nozzles 4 and 5 inject the gas forward to inject and transport the molten slag discharged from the tundish using the kinetic energy of the gas.
  • the cooling fence 7 is provided to quench the liquid crystal of slag scattered by the gas nozzle.
  • the bucket elevator 8 transfers the scattered slag to a sieve screen.
  • the sieve screen 9 controls the particle size of the scattered slag.
  • the separator 10 separates waste heat generated after atomizing and transfers the waste heat to a dryer 11.
  • the dryer 11 receives the waste heat from the slag in the wet state and the separator 10 to dry the slag through heat exchange, and then transfers the slag to the rear end equipment and the heat exchanged waste heat to the following dust collector 12. Transfer.
  • the dust collector 12 receives waste heat from the dryer 11 and uses it as a power source to suck in dust or fine contaminants around the workplace.
  • 150 to 200 waste heat generated during atomization of steelmaking slag can be more effectively recovered and recycled to remove water from the slag, thereby reducing the power cost and solving the problem of environmental pollution caused by waste heat.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

La présente invention concerne un système de séchage de laitier d'aciérie à l'aide de chaleur résiduaire. Le système comprend : un orifice de laitier ; un panier de coulée ; une buse de gaz ; une clôture de refroidissement ; un élévateur à godets ; un tamis ; un séparateur ; un séchoir qui reçoit la chaleur résiduaire du séparateur, sèche le laitier par échange de chaleur, transfère le laitier vers un équipement en aval et transfère la chaleur résiduaire de l'échange de chaleur vers un collecteur de poussière suivant ; et le collecteur de poussière. Le système collecte la chaleur résiduaire à une température comprise entre 150 °C et 200 °C générée pendant l'atomisation et retire l'humidité du laitier à l'aide de la chaleur résiduaire, ce qui réduit les frais d'électricité et résout les problèmes de pollution environnementale provoqués par la chaleur résiduaire.
PCT/KR2013/009145 2012-10-19 2013-10-14 Système d'atomisation de laitier d'aciérie à l'aide de chaleur résiduaire WO2014061950A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0116590 2012-10-19
KR20120116590 2012-10-19

Publications (1)

Publication Number Publication Date
WO2014061950A1 true WO2014061950A1 (fr) 2014-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/009145 WO2014061950A1 (fr) 2012-10-19 2013-10-14 Système d'atomisation de laitier d'aciérie à l'aide de chaleur résiduaire

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WO (1) WO2014061950A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104460741A (zh) * 2014-08-27 2015-03-25 山东钢铁股份有限公司 蒸发冷却器出口温度控制系统及方法
CN110127388A (zh) * 2018-02-09 2019-08-16 中冶宝钢技术服务有限公司 钢渣处理系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413495A (en) * 1977-07-01 1979-01-31 Mitsubishi Heavy Ind Ltd Continuously recovering equipment for heat of molten slag
US4147332A (en) * 1976-08-05 1979-04-03 Pacific Metals Co., Ltd. Method for recovering heat from molten slag and an apparatus therefor
JPS5558306A (en) * 1978-10-23 1980-05-01 Nippon Steel Corp Recovering method for potential heat of blast furnace molten slag
KR20060057497A (ko) * 2004-11-23 2006-05-26 주식회사 에코마이스터 아토마이징된 슬래그로 이루어진 연마재, 그 제조장치 및제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147332A (en) * 1976-08-05 1979-04-03 Pacific Metals Co., Ltd. Method for recovering heat from molten slag and an apparatus therefor
JPS5413495A (en) * 1977-07-01 1979-01-31 Mitsubishi Heavy Ind Ltd Continuously recovering equipment for heat of molten slag
JPS5558306A (en) * 1978-10-23 1980-05-01 Nippon Steel Corp Recovering method for potential heat of blast furnace molten slag
KR20060057497A (ko) * 2004-11-23 2006-05-26 주식회사 에코마이스터 아토마이징된 슬래그로 이루어진 연마재, 그 제조장치 및제조방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104460741A (zh) * 2014-08-27 2015-03-25 山东钢铁股份有限公司 蒸发冷却器出口温度控制系统及方法
CN110127388A (zh) * 2018-02-09 2019-08-16 中冶宝钢技术服务有限公司 钢渣处理系统

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