IN2015DN02076A - - Google Patents

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Publication number
IN2015DN02076A
IN2015DN02076A IN2076DEN2015A IN2015DN02076A IN 2015DN02076 A IN2015DN02076 A IN 2015DN02076A IN 2076DEN2015 A IN2076DEN2015 A IN 2076DEN2015A IN 2015DN02076 A IN2015DN02076 A IN 2015DN02076A
Authority
IN
India
Prior art keywords
pulverized coal
slag removal
hot air
solids
removal device
Prior art date
Application number
Inventor
Masakazu Sakaguchi
Tsutomu Hamada
Takeshi Okada
Setsuo Omoto
Keiichi Nakagawa
Original Assignee
Mitsubishi Heavy Ind Ltd
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 Mitsubishi Heavy Ind Ltd filed Critical Mitsubishi Heavy Ind Ltd
Publication of IN2015DN02076A publication Critical patent/IN2015DN02076A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking devices
    • 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
    • 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
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag

Abstract

Provided is a slag removal device for a blast furnace capable of readily and reliably achieving slag removal using a simple device configuration even when pulverized coal is used that has not had the softening temperature thereof adjusted and capable of reducing as much as possible the risk of pipe damage etc. The slag removal device for a blow pipe is provided in a blow pipe (30) that injects auxiliary fuel pulverized coal (3) together with hot air (2) from a tuyere (22) for a blast furnace main body (20) that produces pig iron from iron ore and includes a component that melts on to pulverized coal (3) slag (S) as a result of the hot air (2) and/or the combustion heat of the pulverized coal (3). A jet nozzle (80) that injects solids (7) having a higher fusion point than the temperature in the vicinity of the tuyere and having a particle diameter greater than that of the pulverized coal (3) into pulverized coal (3) that flows inside the blow pipe (30) and into the hot air (2) is provided in the slag removal device. The injection nozzle (80) comprises a solids supply system that supplies the solids (7) and has provided therein an open/close control valve (89).
IN2076DEN2015 2012-09-20 2013-09-10 IN2015DN02076A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012207275A JP6057642B2 (en) 2012-09-20 2012-09-20 Slag removing device and slag removing method
PCT/JP2013/074414 WO2014045949A1 (en) 2012-09-20 2013-09-10 Slag removal device and slag removal method

Publications (1)

Publication Number Publication Date
IN2015DN02076A true IN2015DN02076A (en) 2015-08-14

Family

ID=50341263

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2076DEN2015 IN2015DN02076A (en) 2012-09-20 2013-09-10

Country Status (7)

Country Link
US (1) US20150240322A1 (en)
JP (1) JP6057642B2 (en)
KR (1) KR20150044933A (en)
CN (1) CN104641003B (en)
DE (1) DE112013004601T5 (en)
IN (1) IN2015DN02076A (en)
WO (1) WO2014045949A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6016549B2 (en) * 2012-09-20 2016-10-26 三菱重工業株式会社 Slag remover
CN107655321B (en) * 2017-11-08 2023-12-01 辽宁科技大学 Device and method for removing slag at outlet of rotary kiln by pushing projectile body by strong electromagnetic force
JP7130898B2 (en) * 2019-03-28 2022-09-06 株式会社神戸製鋼所 Blast furnace operation method
CN111455128B (en) * 2020-04-22 2021-12-21 山东钢铁股份有限公司 Device for cooling accumulated slag under furnace and working method
CN113739594A (en) * 2021-09-22 2021-12-03 新疆宜化化工有限公司 Automatic breaking process and device for preventing hardening of materials in calcium carbide furnace

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161905A (en) * 1986-01-10 1987-07-17 Kobe Steel Ltd Device for removing deposit of blast tuyere of blast furnace
JPS6428312A (en) * 1987-07-24 1989-01-30 Nippon Steel Corp Blowing method for powdered material into blast furnace
JP2684945B2 (en) * 1992-12-24 1997-12-03 住友金属工業株式会社 Ash removal method on the inner surface of blast furnace tuyere
JPH08100208A (en) * 1994-10-03 1996-04-16 Nkk Corp Tuyere part structure for blowing pulverized coal to blast furnace
JPH1150113A (en) * 1997-08-02 1999-02-23 Nippon Steel Corp Injection of pulverized fine coal into blast furnace
JP2001342508A (en) * 2000-06-05 2001-12-14 Nkk Corp Apparatus and method for opening blast tuyere of blast furnace
JP6016549B2 (en) * 2012-09-20 2016-10-26 三菱重工業株式会社 Slag remover
JP6012359B2 (en) * 2012-09-20 2016-10-25 三菱重工業株式会社 Blow pipe structure

Also Published As

Publication number Publication date
KR20150044933A (en) 2015-04-27
WO2014045949A1 (en) 2014-03-27
US20150240322A1 (en) 2015-08-27
JP6057642B2 (en) 2017-01-11
CN104641003B (en) 2017-04-26
DE112013004601T5 (en) 2015-06-11
JP2014062293A (en) 2014-04-10
CN104641003A (en) 2015-05-20

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