WO2019001181A1 - Procédé de fusion de haut-fourneau pour concentré de magnétite de vanadium-titane contenant du chrome (cvtm) riche en vanadium et de qualité élevée - Google Patents

Procédé de fusion de haut-fourneau pour concentré de magnétite de vanadium-titane contenant du chrome (cvtm) riche en vanadium et de qualité élevée Download PDF

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Publication number
WO2019001181A1
WO2019001181A1 PCT/CN2018/088041 CN2018088041W WO2019001181A1 WO 2019001181 A1 WO2019001181 A1 WO 2019001181A1 CN 2018088041 W CN2018088041 W CN 2018088041W WO 2019001181 A1 WO2019001181 A1 WO 2019001181A1
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WO
WIPO (PCT)
Prior art keywords
vanadium
blast furnace
iron
grade
concentrate
Prior art date
Application number
PCT/CN2018/088041
Other languages
English (en)
Chinese (zh)
Inventor
薛向新
张勇
姜涛
张志祥
杨松陶
周密
张显峰
程功金
姚本金
周晟程
Original Assignee
东北大学
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Filing date
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Application filed by 东北大学 filed Critical 东北大学
Publication of WO2019001181A1 publication Critical patent/WO2019001181A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/007—Conditions of the cokes or characterised by the cokes used
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/04—Making slag of special composition
    • 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
    • C22B1/16—Sintering; Agglomerating
    • 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
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • 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
    • C22B1/243—Binding; Briquetting ; Granulating with binders inorganic

Definitions

  • the above-mentioned massive iron ore has an iron grade TFe of 30 to 60% and a particle size of 6 to 40 mm.
  • the temperature at which the slag can be operated during slag formation is greater than 150 °C.
  • the presence of CaO improves the conditions for silicon reduction of vanadium oxide.
  • the increase of sinter alkalinity increases the CaO content in the sinter and the SiO 2 content does not change, thus promoting the reduction of vanadium by silicon.
  • the increase in sinter alkalinity in the integrated charge is beneficial to the reduction of V element.
  • the invention has the following effects:
  • the silicon content of pig iron is reduced, and the average value of pig iron composition is divided into L04-2 grade iron according to national standard, and the vanadium content exceeds the national vanadium-bearing pig iron standard;
  • the utilization coefficient of the blast furnace is increased to 3.7-4.0t/m 3 ⁇ d, the coal ratio is increased, the comprehensive coke ratio is greatly reduced, and the metal yield is kept at a high level.
  • the high-grade high-vanadium-containing chromium-type vanadium-titanium magnet concentrate concentrate in the embodiment of the present invention has an iron grade TFe of 58 to 68%, and contains TiO 2 4 to 12% by weight, Cr 2 O 5 0.1 to 1%, and V.
  • the actual wind speed of the control tuyere is 170m/s
  • the wind temperature is 1200°C
  • the temperature of the vault is controlled at 1285°C
  • the air supply temperature is not lower than 1000°C
  • the temperature during combustion does not exceed 1300°C
  • the temperature of the exhaust gas is controlled to ⁇ 350.
  • the oxygen content of the flue gas is ⁇ 0.5%
  • the net gas pressure is ⁇ 5KPa
  • the air supply time of the hot blast stove is 50min;
  • the melting temperature of slag is 1350 °C
  • the viscosity of slag at 1400 °C is 9.1 Pa ⁇ s
  • the binary alkalinity is controlled at 1.15
  • the mass percentage of MgO is 13%
  • the mass percentage of TiO 2 is 6.
  • the mass percentage of Al 2 O 3 is 12%
  • the mass percentage of V 2 O 5 is 0.13%;
  • the high-grade high-vanadium-containing chromium-type vanadium-titanium magnet concentrate powder in the pellet is 70% by weight, the bentonite is 1.2% by weight, and the rest is fine iron concentrate powder; the pellet is sintered at 1150 °C. 20 minutes, made into pellets;

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention concerne un procédé de fusion de haut-fourneau pour concentré de magnétite de vanadium-titane contenant du chrome (CVTM) riche en vanadium et de qualité élevée. Le procédé est mis en œuvre selon les étapes suivantes consistant à : (1) mélanger une poudre concentrée de CVTM riche en vanadium et de haute qualité, une poudre de concentré de fer, de la magnésite, de la chaux, des fines de retour et un combustible pour produire un minerai fritté à teneur élevée en magnésium; (2) presser la poudre concentrée de CVTM riche en vanadium et de haute qualité, la bentonite et le combustible en boulettes; (3) mélanger le minerai fritté à haute teneur en magnésium et les boulettes, et ajouter du minerai de fer en morceaux pour former une charge de haut-fourneau; (4) initier une fusion de haut-fourneau, comprenant la configuration d'un système de charge, d'un système d'alimentation en air, d'un système de chauffage, et d'un système de scorification avec une température de vent allant de 1 100 à 1 200 °C, un rapport de coke allant de 330 à 380 kg/t, et un rapport de charbon allant de 160 à 200 kg/t; et (5) décharger du fer fondu une fois toutes les 70-90 min à une température de fer fondu allant de 1 430 à 1 500° C.
PCT/CN2018/088041 2017-06-29 2018-05-23 Procédé de fusion de haut-fourneau pour concentré de magnétite de vanadium-titane contenant du chrome (cvtm) riche en vanadium et de qualité élevée WO2019001181A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710512995.3A CN107312899B (zh) 2017-06-29 2017-06-29 一种高品位高钒含铬型钒钛磁铁精矿的高炉冶炼方法
CN201710512995.3 2017-06-29

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WO2019001181A1 true WO2019001181A1 (fr) 2019-01-03

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CN (1) CN107312899B (fr)
WO (1) WO2019001181A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112251551A (zh) * 2020-10-12 2021-01-22 王玉平 高比例镁球团高炉炼铁方法及设置在高炉上的自动布料器

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CN107312899B (zh) * 2017-06-29 2019-02-26 东北大学 一种高品位高钒含铬型钒钛磁铁精矿的高炉冶炼方法
CN107649002B (zh) * 2017-11-14 2021-01-26 攀钢集团攀枝花钢铁研究院有限公司 钒钛磁铁矿烧结烟气催化还原脱硝的方法
CN107881325A (zh) * 2017-11-19 2018-04-06 东北大学 一种低铬型钒钛磁铁矿配加铬铁矿制备烧结矿的方法
CN107881328A (zh) * 2017-11-19 2018-04-06 东北大学 一种高铬型钒钛磁铁矿配加铬铁矿制备烧结矿的方法
CN107937712B (zh) * 2017-11-19 2019-06-28 东北大学 一种酸性高铬型钒钛磁铁矿制备高碱度烧结矿的方法
CN110629019A (zh) * 2018-06-25 2019-12-31 上海梅山钢铁股份有限公司 一种超低碱度高强度烧结矿的制造方法
CN109355448B (zh) * 2018-11-13 2020-09-25 包头钢铁（集团）有限责任公司 一种大型高炉配加高比例低硅高镁含氟熔剂性球团的冶炼工艺
CN112899423A (zh) * 2021-01-19 2021-06-04 东北大学 一种含铬型钒钛磁铁矿高炉冶炼炉料及高炉冶炼方法
CN113913607A (zh) * 2021-10-13 2022-01-11 四川德胜集团钒钛有限公司 一种高钒钛磁铁矿的烧结工艺
CN116200557B (zh) * 2022-12-28 2024-05-10 昆明工业职业技术学院 一种双零硅高钒铁水的高炉冶炼方法
CN116377148A (zh) * 2023-03-21 2023-07-04 武汉钢铁有限公司 富氧高炉降低风口回旋区燃烧温度的冶炼方法

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JPH01100212A (ja) * 1987-10-12 1989-04-18 Sumitomo Metal Ind Ltd 高炉の粉体吹込み操業法
JPH09241710A (ja) * 1996-03-06 1997-09-16 Kawasaki Steel Corp 高炉における炉床湯溜まり部の溶銑脱硫方法
CN102978312A (zh) * 2012-12-13 2013-03-20 四川省川威集团有限公司 高钒钛低MgO炉渣的高炉冶炼方法
CN104232822A (zh) * 2014-09-28 2014-12-24 四川德胜集团钒钛有限公司 高磷鲕状赤铁矿钒钛磁铁矿高炉炼铁的方法
CN106676215A (zh) * 2016-12-14 2017-05-17 四川德胜集团钒钛有限公司 一种钒钛磁铁矿高炉炉料结构及高炉冶炼方法
CN107312899A (zh) * 2017-06-29 2017-11-03 东北大学 一种高品位高钒含铬型钒钛磁铁精矿的高炉冶炼方法

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CN102433404B (zh) * 2012-01-05 2013-11-06 黑龙江建龙钢铁有限公司 高铬高钒钒钛矿的高炉冶炼方法
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JPH01100212A (ja) * 1987-10-12 1989-04-18 Sumitomo Metal Ind Ltd 高炉の粉体吹込み操業法
JPH09241710A (ja) * 1996-03-06 1997-09-16 Kawasaki Steel Corp 高炉における炉床湯溜まり部の溶銑脱硫方法
CN102978312A (zh) * 2012-12-13 2013-03-20 四川省川威集团有限公司 高钒钛低MgO炉渣的高炉冶炼方法
CN104232822A (zh) * 2014-09-28 2014-12-24 四川德胜集团钒钛有限公司 高磷鲕状赤铁矿钒钛磁铁矿高炉炼铁的方法
CN106676215A (zh) * 2016-12-14 2017-05-17 四川德胜集团钒钛有限公司 一种钒钛磁铁矿高炉炉料结构及高炉冶炼方法
CN107312899A (zh) * 2017-06-29 2017-11-03 东北大学 一种高品位高钒含铬型钒钛磁铁精矿的高炉冶炼方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112251551A (zh) * 2020-10-12 2021-01-22 王玉平 高比例镁球团高炉炼铁方法及设置在高炉上的自动布料器

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