[go: up one dir, main page]

WO2000022174A1 - Procede d'alimentation de combustibles de remplacement vers un haut fourneau - Google Patents

Procede d'alimentation de combustibles de remplacement vers un haut fourneau Download PDF

Info

Publication number
WO2000022174A1
WO2000022174A1 PCT/CZ1999/000035 CZ9900035W WO0022174A1 WO 2000022174 A1 WO2000022174 A1 WO 2000022174A1 CZ 9900035 W CZ9900035 W CZ 9900035W WO 0022174 A1 WO0022174 A1 WO 0022174A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension
blast
fact
oil
blast furnace
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CZ1999/000035
Other languages
English (en)
Inventor
Bohdan Irmler
Vladislav Chrascina
Ján KRET
Ondřej KLUZA
Petr MLČOCH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trinecke Zelezarny AS
Original Assignee
Trinecke Zelezarny AS
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 Trinecke Zelezarny AS filed Critical Trinecke Zelezarny AS
Publication of WO2000022174A1 publication Critical patent/WO2000022174A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C21B5/004—Injection of slurries

Definitions

  • the invention relates to the method of substitute fuels feed to the blast furnace bv their iniection to the hot blast blown to the hearth within the production of hot metal .
  • the next possibilitv is iniection of various waste materials to the blast furnace hearth. It has also significant environmental effect.
  • the temperature in the oxidation area of the blast furnace reaches 2 200 ⁇ C. This is sufficient to dissolve entirely all harmful materials. Their individual components float to the blast f rnace gas . which can be used within the energetic networks .
  • the advantage of this method consists in the possibility of its utilization bv the blast furnaces eguipped bv the appliance for liguid fuel iniection, where installation of pulverized coal iniection appliance reguires high capital expenditures as well as technically and technologically demanding adiustment.
  • the next advantage is the fact that the materials containing carbon and hvdrogen in the coal-oil suspension or in the oily scales substitute part of blast furnace coke with all positive effects. Moreover, replacement of oil like additional fuel with coal will reduce the gas volume in the blast furnace bottom. Iniection of materials based on iron oxide enables reduction of the sinter production or reduction of pellets amount.
  • the invention principle furthermore consists in the fact that the iniected suspension is fed to the blast furnace in the amount of 5 to 75 kg per 1 ton of hot metal .
  • the invention principle furthmore consists in the fact that the suspension alternatively contains 5 to 80 % wt. of coal with granulometry 0 to 3 mm, the rest is oil.
  • the invention principle ferthmore consists in the fact that the suspension alternatively contains 5 to 60 % wt. of scales with granularitv 0.001 to 3 mm. the rest is oil .
  • the invention principle furthermore consists in the fact that the suspension alternatively contains 5 to 60 % wt. scales, 5 to 80 % wt. coal, the rest is oil.
  • the invention principle furthermore consists in the fact that before the distribution to individual tuveres the suspension is heated up to the temperature of 80 to 120 ⁇ C in order to provide its sufficient viscositv and thus improved oumpabilitv of conveved blend.
  • the invention principle furthermore consists in the fact that the suspension is iniected to individual tuveres under the pressure bv min. 0.1 MPa higher than the pressure of the blast.
  • the technologv of substitute fuels SUPPIV to the blast furnace according to the invention enables among others utilization of wide assortment of coal regarding its composition as well as the characteristics.
  • the granulometry of coal iniected to the suspension ranges from 0 to 3 mm. This enables utilization of common proceedings of coal adaptation at the coke plant.
  • the invention principle furthermore consists in the fact that the coal conveved bv means of oil to the blast furnace tuveres has the moisture ratio up to 1Q % wt. This directly decreases the costs for preparation of coal - oil suspension.
  • the next advantage of this invention is the fact that it does not reguire inert atmosphere within adaptation and conveyance of to the blast furnace the coal as it is still within the classical technologv of the coal blowing to the blast furnace .
  • the moisture of the scale part of the suspension amounts to max. 25 % wt.
  • the financial effects consist in higher controlllabilitv of the hearth thermal state and thus the hot metal gualitv improvement, in the iron ore cost savings.
  • the financial effects consist in higher controlllabilitv of the hearth thermal state and thus the hot metal gualitv improvement, in the iron ore cost savings.
  • the financial effects consist in higher controlllabilitv of the hearth thermal state and thus the hot metal gualitv improvement, in the iron ore cost savings.
  • in utilization of ferrous substances rom the scales .
  • the coal is adapted to the granulometrv of 0 to 3 mm at common oowder room, then the coal - oil suspension is being prepared, conveved to the blast furnace, adiusted to the final parameters, heated to 80 to 120 ⁇ C and distributed to the individual tuveres . where it is iniected bv adiusted oil nozzles under the pressure min. 0.6 MPa, i. e. bv 0.3 MPa higher than the pressure of the blast.
  • the coal - oil suspension contains 20 % wt. coal and 80 % wt. oil.
  • the oilv scales are prepared with the purpose of their homogenization, the scales are added to the furnace oil, the scales - oil suspension is prepared and shifted from the impulse section to the compressive section, heated uo to 80 to 120 ⁇ C and distributed to the individual tuveres, where it is iniected under the pressure of 0.6 MPa. i. e- bv 0.3 MPa higher than the pressure of the blast.
  • the scales - oil suspension contains 56 % wt. scales and 44 % wt. oil.
  • This invention can be used within all works for the production of hot metal via blast furnaces with minimum of the capital expenditures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

L'invention concerne un procédé d'alimentation de combustibles de remplacement vers un haut fourneau par injection de ces combustibles vers l'air qui souffle sur la sole. Ce phénomène se produit parce que le charbon et/ou le tartre pulvérisés sont injectés dans des tuyères individuelles sous forme de suspension avec de l'huile.
PCT/CZ1999/000035 1998-10-08 1999-10-05 Procede d'alimentation de combustibles de remplacement vers un haut fourneau Ceased WO2000022174A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ19983235A CZ288751B6 (cs) 1998-10-08 1998-10-08 Způsob přívodu náhradních paliv do vysoké pece
CZPV3235-98 1998-10-08

Publications (1)

Publication Number Publication Date
WO2000022174A1 true WO2000022174A1 (fr) 2000-04-20

Family

ID=5466375

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ1999/000035 Ceased WO2000022174A1 (fr) 1998-10-08 1999-10-05 Procede d'alimentation de combustibles de remplacement vers un haut fourneau

Country Status (2)

Country Link
CZ (1) CZ288751B6 (fr)
WO (1) WO2000022174A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004106558A1 (fr) * 2003-05-26 2004-12-09 Loesche Gmbh Melange de combustible destine a etre introduit dans des tuyeres pour la production de fonte brute en haut fourneau et procede et installation de production et d'introduction dudit melange combustible

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1363604A (fr) * 1962-07-18 1964-06-12 Centre Nat Rech Metall Procédé et dispositif pour l'injection de combustibles dans un four à cuve
FR1401807A (fr) * 1963-07-17 1965-06-04 Combustion Eng Procédé et installation pour fournir une suspension de combustible pulvérisé à des dispositifs de chauffage
US3207558A (en) * 1962-03-17 1965-09-21 Yawata Seitetsu Kabushiki Kais Method and device for transmitting mixed solid-liquid fuel into the blast furnace
DE1433357A1 (de) * 1964-12-09 1968-12-19 Alfred Rexroth Verfahren zum Teilersetzen des Gattierkokses in Metallreduzieroefen durch in die Duesenzone eingepresstes Kohlen- oder Kokspulver
JPS5364602A (en) * 1976-11-22 1978-06-09 Sumitomo Metal Ind Ltd Feeding method for powdery solid fuel into blast furnace
JPS5792107A (en) * 1980-11-29 1982-06-08 Nisshin Steel Co Ltd Method and device for feeding pulverized coal forcibly into blast furnace tuyere part
WO1993020244A1 (fr) * 1992-03-27 1993-10-14 British Steel Plc Injection de fines de minerai

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207558A (en) * 1962-03-17 1965-09-21 Yawata Seitetsu Kabushiki Kais Method and device for transmitting mixed solid-liquid fuel into the blast furnace
FR1363604A (fr) * 1962-07-18 1964-06-12 Centre Nat Rech Metall Procédé et dispositif pour l'injection de combustibles dans un four à cuve
FR1401807A (fr) * 1963-07-17 1965-06-04 Combustion Eng Procédé et installation pour fournir une suspension de combustible pulvérisé à des dispositifs de chauffage
DE1433357A1 (de) * 1964-12-09 1968-12-19 Alfred Rexroth Verfahren zum Teilersetzen des Gattierkokses in Metallreduzieroefen durch in die Duesenzone eingepresstes Kohlen- oder Kokspulver
JPS5364602A (en) * 1976-11-22 1978-06-09 Sumitomo Metal Ind Ltd Feeding method for powdery solid fuel into blast furnace
JPS5792107A (en) * 1980-11-29 1982-06-08 Nisshin Steel Co Ltd Method and device for feeding pulverized coal forcibly into blast furnace tuyere part
WO1993020244A1 (fr) * 1992-03-27 1993-10-14 British Steel Plc Injection de fines de minerai

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 002, no. 100 (C - 020) 18 August 1978 (1978-08-18) *
PATENT ABSTRACTS OF JAPAN vol. 006, no. 177 (C - 124) 11 September 1982 (1982-09-11) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004106558A1 (fr) * 2003-05-26 2004-12-09 Loesche Gmbh Melange de combustible destine a etre introduit dans des tuyeres pour la production de fonte brute en haut fourneau et procede et installation de production et d'introduction dudit melange combustible

Also Published As

Publication number Publication date
CZ288751B6 (cs) 2001-08-15
CZ323598A3 (cs) 2000-06-14

Similar Documents

Publication Publication Date Title
CN110157846B (zh) 一种高炉大配比加入废钢的方法
US5833735A (en) Method of making steel
Carpenter Use of PCI in blast furnaces
KR20010014415A (ko) 용융가스화로에서의 미분탄 활용방법
CA1149175A (fr) Separation de l'acier en presence dans les minerais de fer a forte teneur de phosphore
CN105463214B (zh) 一种采用低贫品位红土镍矿生产高镍铁的方法
CN103352097A (zh) 还原炉及煤基外预热含煤球团直接还原工艺
CN101372719A (zh) 一种非焦冶炼钢铁的方法
WO2000022174A1 (fr) Procede d'alimentation de combustibles de remplacement vers un haut fourneau
CN219824259U (zh) 一种低成本大高炉焦炭投放装置
Lyalyuk et al. Changes in granulometric composition of blast-furnace coke
Kuzin et al. Experience in coke preparation for blast-furnace smelting. Part 2
CN1295362C (zh) 利用含烃和含氧化铁废料尤其是轧钢屑淤渣与粉煤的方法和设备
RU2345150C2 (ru) Шихта для производства агломерата
Hill et al. Blast furnace granular coal injection at Bethlehem Steel's Burns Harbor Plant
Borisov et al. Factory tests of a technology for recycling metallurgical sludge that contains iron and zinc
Shoko et al. Briquetted chrome ore fines utilisation in Ferrochrome production at Zimbabwe alloys
Nikitin et al. Employing industrial waste in sinter and hot-metal production
Jain COREX & FINEX-New Developments in Utilization of Low Grade Raw Materials
SU1235900A1 (ru) Способ загрузки доменной печи
Griscom et al. The Fastmet process coal based direct reduction for the EAF
JPH0635604B2 (ja) 高炉操業方法
KR100931175B1 (ko) 괴갈철광의 고로장입방법
Kumar et al. Recycling of steel plant wastes through Corex
Upadhyay et al. Importance of Coke Quality and Optimization for Higher Pulverized Coal Injection Rates in Blast Furnace

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BG BR CA HU JP KP MX PL RO RU UA US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase