WO2009030064A1 - Procédé de fusion de fer et d'acier sans coke - Google Patents

Procédé de fusion de fer et d'acier sans coke Download PDF

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Publication number
WO2009030064A1
WO2009030064A1 PCT/CN2007/002634 CN2007002634W WO2009030064A1 WO 2009030064 A1 WO2009030064 A1 WO 2009030064A1 CN 2007002634 W CN2007002634 W CN 2007002634W WO 2009030064 A1 WO2009030064 A1 WO 2009030064A1
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WO
WIPO (PCT)
Prior art keywords
coal
furnace
iron
powder
steel
Prior art date
Application number
PCT/CN2007/002634
Other languages
English (en)
Chinese (zh)
Inventor
Shutong Dong
Original Assignee
Shutong Dong
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 Shutong Dong filed Critical Shutong Dong
Priority to PCT/CN2007/002634 priority Critical patent/WO2009030064A1/fr
Publication of WO2009030064A1 publication Critical patent/WO2009030064A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
    • C21B13/085—Making spongy iron or liquid steel, by direct processes in rotary furnaces wherein iron or steel is obtained in a molten state
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/12—Making spongy iron or liquid steel, by direct processes in electric furnaces
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
    • 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
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to a method of smelting steel, and more particularly to a method of smelting steel. Background technique
  • the method of smelting steel is coke as the main energy source for iron making. Since coke is mainly produced by coking coal, coke resources are becoming more and more scarce and prices are becoming more and more expensive with years of consumption; and coke production will seriously pollute the environment and the cost of treatment is high. Therefore, in recent years, developed countries have reduced the number of blast furnaces and coke ovens, focusing on the development of non-coke metallurgical technology and electric furnace short-run steel mills.
  • the technical problem to be solved by the present invention is to provide a method for non-coke smelting steel; using the method to smelt steel can save cost, save coke resources and reduce environmental pollution.
  • the basic idea of the technical solution adopted by the present invention is: using coal, iron ore or limestone as a main raw material, using a coke oven type direct reduction furnace, and using a coal-based direct reduction method to produce sea iron.
  • a method for non-coke smelting steel includes the following steps:
  • the iron ore powder, coal powder, limestone powder and additives are less than 3mm, according to the weight ratio of 10: 2 ⁇ 7: 0. 1 ⁇ 0. 3: 0. 1 ⁇ 0. 3 ratio of mixing;
  • the hot mixture is heated to a furnace or a converter to blow oxygen to obtain molten iron in a molten state, and then subjected to a conventional steel making process to produce a high-quality steel product.
  • a method for non-coke smelting steel includes the following steps:
  • the coal is a mixture of one or more of coking coal, gas coal, fat coal, lean coal, anthracite, and weakly cohesive coal.
  • the electric furnace comprises a submerged arc furnace, an electric arc furnace and an induction furnace; wherein the converter comprises a top-blowing type converter, a top-bottom double-blown type converter, and a side-blown type converter.
  • the external heat type coke oven type direct reduction furnace is an external heat type coke oven type direct reduction furnace with upper feeding and side discharging.
  • coal provides both chemical energy as a reducing agent for the reduction reaction and heat energy as a fuel.
  • the gas produced by the direct reduction reaction not only does not have a large amount of residual gas, but also needs to be supplemented with some heat.
  • an external heat source such as coke oven gas, blast furnace gas or producer gas, is required, and the combustion chamber is modified. According to the height of the combustion chamber, more than 2 rows of burners are added in the direction of the narrow side of the combustion chamber, or in the furnace charge. Appropriate multi-coal blending, excess coal is retorted, dry distillation product coal
  • Both gas and blue carbon can be returned for use as an energy source, gas as an external heat fuel, blue carbon as a reducing agent or a gas-generating fuel.
  • the coal is coking coal; the electric furnace is a submerged arc furnace.
  • a method for non-charring steel comprising the following steps:
  • the hot mixture is sent to a converter to blow oxygen to obtain molten iron in a molten state, and then subjected to a conventional steel making process to produce a high-quality steel product.
  • step 4) The hot mixture obtained in step 3) is sent to the converter for oxygen blowing; the converter generates a large amount of high-temperature flue gas, which is first passed through a hot air furnace to heat the hot air supplied to the converter, and then sent to The waste heat boiler room uses the generated steam to generate electricity, and the electric energy can supply oxygen generators and other power.
  • the coal is a mixture of gas coal and fat coal; the converter is a top-blown converter.
  • a method for non-charring steel comprising the following steps:
  • the coal is lean coal; the electric furnace is an electric arc furnace.
  • Example 4 A method for non-charring steel, comprising the following steps:
  • the hot mixture is sent to a converter to blow oxygen to obtain molten iron in a molten state, and then subjected to a conventional steel making process to produce a high-quality steel product.
  • the coal is anthracite; the converter is a top-bottom double-blown converter.
  • a method for non-charring steel comprising the following steps:
  • a method for non-smelting steel including the following steps -
  • the coal is a mixture of coking coal, gas coal, fat coal, lean coal, anthracite, weakly cohesive coal.
  • the converter is a side blow type converter.
  • Example 1 is repeated except that: Step 3) is replaced by the following steps:
  • the hot mixture is thermally cooled, and then separated by a method such as crushing, magnetic separation, etc., and the molten iron is sent to the blast furnace to obtain high quality.
  • the molten iron through the conventional steelmaking process, produces high quality steel products.
  • Example 6 is repeated except that: Step 3) is replaced by the following steps: The hot mixture is thermally cooled, and then the qualified sponge iron is separated by crushing, magnetic separation, etc., and the iron furnace is melted. Get high-quality molten iron and then produce high-quality steel products through the conventional steelmaking process.

Abstract

Cette invention concerne un procédé de fusion de fer et d'acier sans coke, qui utilise le charbon, le minerai de fer et la castine en tant que matières premières, adopte un four de réduction directe du type four à coke spécifiquement conçu, et utilise le MHL (abréviation désignant un procédé de réduction directe à base de charbon) pour produire du fer spongieux. Le procédé comprend principalement les étapes consistant à : prétraiter les matières premières ; réaliser une production dans un four de réduction directe du type four à coke spécifiquement conçu ; post-traiter le produit intermédiaire ; recycler la chaleur résiduelle et traiter les impuretés. Le procédé est avantageux de par son coût réduit, sa faible consommation de coke, et son caractère faiblement polluant.
PCT/CN2007/002634 2007-09-03 2007-09-03 Procédé de fusion de fer et d'acier sans coke WO2009030064A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/002634 WO2009030064A1 (fr) 2007-09-03 2007-09-03 Procédé de fusion de fer et d'acier sans coke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/002634 WO2009030064A1 (fr) 2007-09-03 2007-09-03 Procédé de fusion de fer et d'acier sans coke

Publications (1)

Publication Number Publication Date
WO2009030064A1 true WO2009030064A1 (fr) 2009-03-12

Family

ID=40428420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/002634 WO2009030064A1 (fr) 2007-09-03 2007-09-03 Procédé de fusion de fer et d'acier sans coke

Country Status (1)

Country Link
WO (1) WO2009030064A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104745217A (zh) * 2015-04-01 2015-07-01 武汉钢铁(集团)公司 高变质焦煤的配用方法
CN107036121A (zh) * 2017-06-08 2017-08-11 青岛华煤能源科技有限公司 一种兰炭综合燃烧系统
CN113265507A (zh) * 2021-06-28 2021-08-17 王恩礼 氧化铁矿石无氧还原工艺及其密闭式还原转炉
CN114507536A (zh) * 2022-03-28 2022-05-17 武汉钢铁有限公司 提高焦炭抗碎强度的配煤方法
CN114959148A (zh) * 2022-05-25 2022-08-30 刘绍祥 一种电炉炼铁方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911051A1 (de) * 1969-03-05 1970-09-17 Demag Ag Verfahren zur Herstellung von Eisen in festem Zustand
CN1107893A (zh) * 1994-03-04 1995-09-06 周景生 海绵铁的生产方法
CN1147018A (zh) * 1996-05-03 1997-04-09 云南特钢集团公司 直接还原铁的生产工艺及装置
DE19753142A1 (de) * 1997-11-03 1999-05-06 Artur R Greul Verfahren der Vorreduktion von Eisenerz mit Kohle im Koksofen
CN1243885A (zh) * 1999-08-20 2000-02-09 方新贵 中温快速固结铁焦团矿及设备
CN1316524A (zh) * 2001-01-15 2001-10-10 苏亚杰 型煤炼焦联产海绵铁工艺方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911051A1 (de) * 1969-03-05 1970-09-17 Demag Ag Verfahren zur Herstellung von Eisen in festem Zustand
CN1107893A (zh) * 1994-03-04 1995-09-06 周景生 海绵铁的生产方法
CN1147018A (zh) * 1996-05-03 1997-04-09 云南特钢集团公司 直接还原铁的生产工艺及装置
DE19753142A1 (de) * 1997-11-03 1999-05-06 Artur R Greul Verfahren der Vorreduktion von Eisenerz mit Kohle im Koksofen
CN1243885A (zh) * 1999-08-20 2000-02-09 方新贵 中温快速固结铁焦团矿及设备
CN1316524A (zh) * 2001-01-15 2001-10-10 苏亚杰 型煤炼焦联产海绵铁工艺方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MA, JITANG ET AL.: "Direct reduction of Panzhihua ore pellets with carbon by external heating (coke oven) (I", IRON STEEL VANADIUM TITANIUM, 1980, pages 18 - 31 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104745217A (zh) * 2015-04-01 2015-07-01 武汉钢铁(集团)公司 高变质焦煤的配用方法
CN107036121A (zh) * 2017-06-08 2017-08-11 青岛华煤能源科技有限公司 一种兰炭综合燃烧系统
CN107036121B (zh) * 2017-06-08 2024-03-08 青岛华煤能源科技有限公司 一种兰炭综合燃烧系统
CN113265507A (zh) * 2021-06-28 2021-08-17 王恩礼 氧化铁矿石无氧还原工艺及其密闭式还原转炉
CN114507536A (zh) * 2022-03-28 2022-05-17 武汉钢铁有限公司 提高焦炭抗碎强度的配煤方法
CN114507536B (zh) * 2022-03-28 2022-11-29 武汉钢铁有限公司 提高焦炭抗碎强度的配煤方法
CN114959148A (zh) * 2022-05-25 2022-08-30 刘绍祥 一种电炉炼铁方法

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