[go: up one dir, main page]

WO2019001180A1 - Procédé de préparation de minerai fritté à partir d'un mélange concentré de magnétite de vanadium-titane comportant du chrome, riche en vanadium et de qualité élevée - Google Patents

Procédé de préparation de minerai fritté à partir d'un mélange concentré de magnétite de vanadium-titane comportant du chrome, riche en vanadium et de qualité élevée Download PDF

Info

Publication number
WO2019001180A1
WO2019001180A1 PCT/CN2018/088040 CN2018088040W WO2019001180A1 WO 2019001180 A1 WO2019001180 A1 WO 2019001180A1 CN 2018088040 W CN2018088040 W CN 2018088040W WO 2019001180 A1 WO2019001180 A1 WO 2019001180A1
Authority
WO
WIPO (PCT)
Prior art keywords
vanadium
accounts
sintered ore
concentrate
particle size
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/CN2018/088040
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
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.)
Northeastern University China
Original Assignee
Northeastern University China
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 Northeastern University China filed Critical Northeastern University China
Publication of WO2019001180A1 publication Critical patent/WO2019001180A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge
    • 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
    • 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 invention belongs to the technical field of metallurgy, and particularly relates to a method for preparing a sintered ore by using a high-grade high-vanadium-containing chromium-containing vanadium-titanium magnetite concentrate mixture.
  • High vanadium-containing chromium-type vanadium-titanium magnet ore is widely distributed throughout the world, such as the Kulanagh mine in Russia, the Hongge mine in Panxi, China, and the Chengde super-poor mine.
  • High-grade high vanadium-containing chromium-type vanadium-titanium magnetite concentrate obtained by beneficiation (60% ⁇ TFe ⁇ 67%, 0.3% ⁇ V 2 O 5 ⁇ 1.5%, 0.2% ⁇ Cr 2 O 3 ⁇ 1.0%, 2.0% ⁇ TiO 2 ⁇ 12.0%), the concentrate powder is relatively coarser than the common vanadium-containing titanium magnetite powder of Panzhihua (no chromium or very low chromium content), and the structure is dense, without excessive fine particles and pores.
  • high MgO CN101519720
  • low FeO CN101338363
  • high alkalinity CN101338362
  • high negative pressure and large air volume CN201110174638.3
  • CN201310246857.7 and CN200810305416.9 provide a preparation method of vanadium-titanium magnetite sinter, using chromium-free vanadium-titanium magnetite, using lime to produce high alkalinity sinter, and improving the strength of sintered ore produced (greater than 76%), but the yield is very low (about 72%), and it does not solve the problem of poor performance of low-temperature reduction and pulverization of sintered ore.
  • CN201410510931.6 The preparation method of vanadium-titanium magnetite ore sinter is provided, the raw material used in the method is chrome-free vanadium-titanium magnetite having a taste of 45 to 55%, and is granulated by the granulation method, and then sintered. Significantly increase the yield of sinter, but the produced sinter strength (T) and low temperature reduction pulverization performance are poor.
  • the high chromium and high vanadium type vanadium-titanium ore sintering method is provided, which adopts a sintering machine to industrially produce high chromium and high vanadium type vanadium and titanium, but does not provide measures for improving the low temperature reduction powdering performance of the sintered ore, and the sintering is produced.
  • the low-temperature reduction pulverization performance (RDI +3.15 ) of the mine larger than 3.15mm is lower than 60%, which seriously affects the smelting of the blast furnace.
  • CN200710048394.8 The method for sintering a chromium-containing vanadium-titanium magnetite provided by the method of pre-granulation and returning to pre-wet water to improve the yield and strength of the sintered ore, but has little effect on the improvement of the low-temperature reduction powdering performance.
  • the strength of the coke reaction is lowered, the softening temperature of the ore is lowered, the melting point of the refractory material of the blast furnace wall is lowered, and the gas pipeline and the hot blast furnace refractory material are corroded and damaged.
  • the object of the present invention is to provide a high-grade high-vanadium-containing chromium-type vanadium-titanium magnet concentrate concentrate preparation method for preparing sintered ore, and to provide high-quality sintered ore to the blast furnace by adjusting the preparation process and operating parameters of the common vanadium-titanium sintered ore.
  • Industrial smelting provides the necessary guarantees.
  • the fuel is crushed to a portion with a particle size of ⁇ 3 mm, which accounts for more than 85% of the total weight, and is wetted by the returning water;
  • the height of the control layer is 650 ⁇ 750mm; then ignition and sintering, ignition temperature 1125 ⁇ 1225 ° C, ignition time 65 ⁇ 95s, adjust the ignitor lower bellows gate to make the ignition negative pressure 5.5 ⁇ 7KPa, control combustion air pressure 2.5 ⁇ 3kPa, suction negative pressure is 9.5 ⁇ 11KPa, sintering time is 38 ⁇ 45min, sintering end temperature is 200 ⁇ 300 ° C, made into hot sintered ore;
  • the hot sintered ore is crushed by hot crushing, crushed to a particle size of ⁇ 150 mm, and sieved to remove a portion having a particle size of ⁇ 5 mm, and the remaining portion having a particle diameter of ⁇ 5 mm is cooled to ⁇ 130 ° C to obtain a cold sintered ore;
  • the cold sinter is placed in the ore tank, and the chlorine-containing inhibitor is uniformly sprayed before the blast furnace is used to prepare the sintered ore product to be put into the furnace; the chlorine-containing inhibitor is made of calcium chloride dihydrate powder and water.
  • the solution is sprayed in an amount of 0.4 to 0.8 per thousand of the total weight of the cold sinter.
  • the sintered ore obtained by the above method has an iron grade TFe of 55 to 60% and a basicity of 2.0 to 2.8.
  • the sinter product obtained by the above method has a drum strength index (TI) of 65 to 70%, a reduction pulverization index (RDI + 3.15 ) of 85 to 90%, and a reduction index (RI) of 72 to 78%.
  • the fuel is crushed by sequentially crushing the crucible crusher and the crucible crusher.
  • the alkalinity of all the raw materials is controlled to be 2.0 to 2.8, the carbon content is 2.5 to 3.3% by weight, and the MgO content is 3.2 to 3.7% by weight.
  • the crushing adopts a water-cooled single-roll crusher, the screening uses a hot mineral sieve, and the cooling uses a blast ring cooler.
  • the last section of the flue gas temperature of the ring cooler is controlled to be 40 to 60 ° C during cooling.
  • the above-mentioned chromium-containing vanadium-titanium magnetite has an iron grade of 60.0 to 67.0%, a SiO 2 content of 2.0 to 5.0% by weight, a CaO of 0.1 to 2.0%, a MgO of 0.6 to 1.8%, and an Al 2 O 3 of 1.5 to 3.0%.
  • the above iron concentrate powder has an iron grade TFe of 45.0 to 65.0%, a particle size of ⁇ 0.5 mm, and a portion having a particle size of ⁇ 0.074 mm ⁇ 70% of the total weight.
  • the above-mentioned boron concentrate powder has an iron grade TFe of 50.0 to 60.0%, a B 2 O 3 of 3 to 10%, a particle size of ⁇ 0.5 mm, and a portion having a particle size of ⁇ 0.074 mm, which accounts for ⁇ 85% of the total weight.
  • the above fuel is a mixture of coke breeze and anthracite, and the anthracite accounts for 20 to 50% by weight of the total fuel.
  • the iron concentrate used has high taste, which provides conditions for smelting the ore with ultra-high alkalinity, avoiding the problem that the sinter taste, strength and yield are excessively reduced after the industrialization of ordinary vanadium-titanium ore increases the alkalinity;
  • the fuel is mixed with anthracite and coke powder, which reduces the average particle size of the fuel, reduces the perovskite content in the sinter, and adjusts the FeO content to a suitable interval;
  • the mixture can be added with a certain amount of boron fine powder, the use of low melting point of boron oxide, can form a low melting point compound with many oxides, especially alkaline oxides, reduce the melting point during the sintering process, promote the liquid Phase formation, which is of great significance for the sintering of high melting point chromium-containing vanadium ilmenite powder containing Cr 2 O 3 ;
  • the sinter is sprayed with low-chlorine inhibitors when the ore is discharged.
  • the chlorine content is one order of magnitude lower than the current inhibitors on the market, and does not affect the blast furnace smelting at all; the spray before the feed is changed to the discharge of the mine. Improve the effect of low chlorine inhibitors.
  • FIG. 1 is a schematic flow chart of a method for preparing a sintered ore by using a high-grade high-vanadium-containing chromium-containing vanadium-titanium magnet concentrate concentrate according to an embodiment of the present invention.
  • the electronic scale is proofed once every 3 hours, and the average value of each of the three sets is subject to the average value of the iron material weighing error ⁇ 0.5 kg / m ⁇ s, the lime powder weighing error ⁇ 0.2kg/m ⁇ s, fuel error ⁇ 0.05kg/m ⁇ s; maintain material balance, the material level of the mixed material tank is 5 minutes (half full).
  • the sintering apparatus used in the embodiment of the present invention is a 90 m 2 sintering machine.
  • the drum index and the yield rate are tested according to the GB8209-87 standard, and the low temperature reduction powdering index and the reduction degree index are tested according to the GB/T13242-91 standard.
  • the fuel is crushed by sequentially crushing the crucible crusher and the crucible crusher.
  • a water-cooled single-roll crusher is used, the sieve is a hot mineral sieve, and the cooling is a blast ring cooler.
  • the ignition is through natural gas and air ignition.
  • the lime powder in the embodiment of the present invention is commercially available, and contains CaO ⁇ 80% by weight and a particle size ⁇ 0.5 mm.
  • the fuel used in the embodiments of the present invention is commercially available coke powder and anthracite, the carbon content of the coke powder is ⁇ 80%, the particle size is ⁇ 3mm, the carbon content of anthracite is ⁇ 85%, and the particle size is ⁇ 2mm.
  • the chromium-containing vanadium-titanium magnetite selected in the embodiment of the present invention has an iron grade of 60.0-67.0%, SiO 2 2.0-5.0% by weight, CaO 0.1-2.0%, MgO 0.6-1.8%, and Al 2 O. 3 1.5 to 3.0%, TiO 2 2 to 12%, V 2 O 5 0.3 to 1.5%, Cr 2 O 3 0.2 to 1.0%; particle size ⁇ 0.5 mm, and the portion having a particle size of ⁇ 0.074 mm accounts for ⁇ 50% of the total weight.
  • the iron concentrate powder used in the embodiment of the present invention has an iron grade TFe of 45.0-65.0%, a particle size of ⁇ 0.5 mm, and a fraction of a particle size of ⁇ 0.074 mm ⁇ 70% of the total weight.
  • the boron concentrate powder used in the embodiment of the present invention has an iron grade TFe of 50.0-60.0%, B 2 O 3 3-10%, a particle size of ⁇ 0.5 mm, and a portion having a particle size of ⁇ 0.074 mm accounts for ⁇ 85% of the total weight.
  • the vanadium-containing chromium-containing waste slag used in the embodiment of the present invention is a waste obtained by vanadium extraction of vanadium slag after vanadium extraction in a converter, and the iron grade TFe is 20 to 45%, and contains Cr 2 O 3 0.5 by weight. ⁇ 7%, particle size ⁇ 5mm.
  • the returning ore in the embodiment of the present invention is blast furnace sintering and returning, blast furnace pellet returning, gravity dust removing ash, blast furnace dust ash, sintering dust ash and/or shaft furnace dust ash.
  • the iron concentrate powder used in the embodiment of the present invention is a common iron concentrate powder containing no vanadium and titanium.
  • the dolomite MgO ⁇ 30% particle size ⁇ 2 mm used in the embodiment of the present invention.
  • the particle size of the calcium chloride dihydrate powder used in the embodiment of the present invention is ⁇ 2 mm.
  • High-vanadium-containing chromium-type vanadium-titanium magnetite concentrate powder boron concentrate powder, iron concentrate powder, vanadium-containing chromium-containing waste residue, lime powder, dolomite, fuel and returning ore as raw materials
  • High-vanadium-containing chromium-type vanadium-titanium magnet concentrate accounts for 50%, boron concentrate accounts for 5%, iron concentrate powder accounts for 5%, vanadium-containing chromium-containing waste slag accounts for 3%, dolomite accounts for 5%, and lime powder accounts for 5%.
  • %, fuel accounts for 3.3%, and the rest is returning.
  • the anthracite in fuel accounts for 20% of the total fuel weight;
  • the fuel is crushed to a portion with a particle size of ⁇ 3 mm, which accounts for more than 85% of the total weight, and the returning mineral is moistened with water;
  • the whole raw materials are mixed with water, the amount of water added is 80% of the total weight of all mixed water, the mixing temperature is 75 ° C, and the mixing time is 55 s; then granulation is carried out, and the remaining mixed water is added during granulation, the granulation temperature is 60 ° C, and the granulation time 6min; in the obtained particle mixture, the portion having a particle diameter of 1 to 3 mm accounts for 90% of the total particle mixture;
  • the alkalinity is controlled at 2.5, the carbon content is 2.7% by weight, and the MgO content is 3.7% by weight;
  • the granule mixture is clothed by the distributing machine, and the height of the control layer is 650 mm; then the ignition is sintered, the ignition temperature is 1125 ° C, the ignition time is 95 s, the ignitor lower bellows gate is adjusted to make the ignition negative pressure 5.5KPa, and the combustion air pressure is controlled to 2.6 kPa.
  • the suction negative pressure is 9.5KPa, the sintering time is 44min, and the sintering end temperature is 200°C, which is made into hot sintered ore;
  • the hot sintered ore is crushed by hot crushing, crushed to a particle size of ⁇ 150mm, and sieved to remove the portion with a particle size of ⁇ 5mm.
  • the remaining portion of the particle size ⁇ 5mm is cooled to ⁇ 130°C to obtain cold sintered ore; control during cooling
  • the last section of the ring cooler has a flue gas temperature of 40 ° C;
  • the cold sintered ore is placed in the ore tank, and the chlorine-containing inhibitor is uniformly sprayed before the use of the blast furnace to prepare a sintered ore product to be charged into the furnace;
  • the chlorine-containing inhibitor is a solution prepared by adding water to the calcium chloride dihydrate powder.
  • the particle size of calcium chloride dihydrate powder is ⁇ 2mm; the amount of spray is 0.4% of the total weight of cold sinter of calcium chloride;
  • the iron grade of the obtained sinter product is 59%, the alkalinity is 2.5;
  • the drum strength index (TI) was 65%, the reduction powdering index (RDI + 3.15 ) was 87%, and the reduction index (RI) was 72%.
  • high-grade high-vanadium-containing chromium-type vanadium-titanium magnet concentrate accounts for 68%
  • boron concentrate accounts for 0%
  • iron concentrate powder accounts for 6%
  • vanadium-containing chromium-containing waste slag accounts for 2%
  • dolomite 2% iron concentrate powder accounts for 5%
  • fuel accounts for 3%
  • fuel anthracite accounts for 50% of the total fuel weight
  • the alkalinity is controlled at 2.0, the carbon content is 2.5% by weight, and the MgO content is 3.0% by weight;
  • the height of the control layer is 680mm when the fabric is clothed;
  • the ignition sintering temperature is 1225°C, the time is 65s, the ignition negative pressure is 6KPa, the combustion air pressure is controlled to 2.7kPa, the suction negative pressure is 11KPa, the sintering time is 42min, and the sintering end temperature is 250°C. ;
  • the temperature of the last section of the control ring cooler is 60 ° C during cooling
  • the spraying amount of the chlorine-containing inhibitor is 0.5 parts per million of the total weight of the cold-sintered calcium chloride; the obtained iron ore product has an iron grade TFe of 60% and a basicity of 2.0; the drum strength index (TI) For 70%, the reduction powdering index (RDI + 3.15 ) was 86% and the reduction index (RI) was 74%.
  • high-grade high-vanadium-containing chromium-type vanadium-titanium magnet concentrate accounts for 52%
  • boron concentrate accounts for 10%
  • iron concentrate powder accounts for 10%
  • vanadium-containing chromium-containing waste slag accounts for 8%
  • dolomite 4% doeslomite 4%
  • lime powder accounts for 5%
  • fuel accounts for 3.6%
  • fuel anthracite accounts for 30% of total fuel weight
  • the amount of water added when mixing with water is 90% of the total weight of all mixed water, the mixing temperature is 85 ° C, the mixing time is 45 s; the granulation temperature is 63 ° C, the granulation time is 5 min; and the particle mixture has a particle size of 1 to 3 mm. Accounting for 80% of all particle mixes;
  • the alkalinity is controlled at 2.2, the carbon content is 2.9% by weight, and the MgO content is 3.5% by weight;
  • the height of the control layer is 700mm when the cloth is clothed; the ignition sintering temperature is 1175°C, the time is 80s, the ignition negative pressure is 6.5KPa, the combustion air pressure is controlled to 2.8kPa, the suction negative pressure is 10KPa, the sintering time is 40min, and the sintering end temperature is 300. °C;
  • the temperature of the last section of the control ring cooler is 50 ° C during cooling
  • the spraying amount of the chlorine-containing inhibitor is 0.6 parts per million of the total weight of the cold-sintered calcium chloride; the iron grade of the obtained sintered ore product is 58%, the alkalinity is 2.2; the drum strength index (TI) At 66%, the reduction powdering index (RDI + 3.15 ) was 88% and the reduction index (RI) was 76%.
  • the high-grade high vanadium-containing chromium-type vanadium-titanium magnet concentrate accounts for 60%
  • the boron concentrate accounts for 3%
  • the iron concentrate powder accounts for 8%
  • the vanadium-containing chromium-containing waste slag accounts for 3%
  • dolomite 3%
  • lime powder accounts for 10%
  • fuel anthracite accounts for 40% of total fuel weight
  • the amount of water added when mixing with water is 83% of the total weight of all mixed water, the mixing temperature is 78 ° C, the mixing time is 55 s; the granulation temperature is 64 ° C, the granulation time is 4 min; and the particle mixture has a particle size of 1 to 3 mm. Accounting for 75% of all particle mixes;
  • the height of the control layer is 750mm when the fabric is clothed;
  • the ignition sintering temperature is 1150°C, the time is 85s, the ignition negative pressure is 7KPa, the combustion air pressure is controlled to 3kPa, the suction negative pressure is 10.5KPa, the sintering time is 45min, and the sintering end temperature is 220°C. ;
  • the temperature of the last section of the control ring cooler is 45 ° C during cooling
  • the amount of chlorine-containing inhibitor sprayed is 0.7% of the total weight of the cold-sintered calcium chloride; the iron grade of the obtained sintered ore product is 56%, the alkalinity is 2.7; the drum strength index (TI) The yield reduction index (RDI + 3.15 ) was 90%, and the reduction index (RI) was 78%.
  • high-grade high-vanadium-containing chromium-type vanadium-titanium magnet concentrate accounts for 55%
  • boron concentrate accounts for 2%
  • iron concentrate powder accounts for 7%
  • vanadium-containing chromium-containing waste slag accounts for 5%
  • dolomite 5% 5%
  • lime powder accounts for 10%
  • fuel accounts for 3.3% fuel anthracite accounts for 30% of total fuel weight
  • the height of the control layer is 720mm when the fabric is clothed; the ignition temperature is 1200°C, the time is 75s, the ignition negative pressure is 6KPa, the combustion air pressure is controlled to 2.5kPa, the suction negative pressure is 10.5KPa, the sintering time is 38min, and the sintering end temperature is 280. °C;
  • the temperature of the last section of the control ring cooler is 55 ° C during cooling
  • the spraying amount of the chlorine-containing inhibitor is 0.8% of the total weight of the cold-sintered calcium chloride; the obtained iron ore product has an iron grade TFe of 55% and a basicity of 2.8; the drum strength index (TI) The yield reduction index (RDI + 3.15 ) was 85% and the reduction index (RI) was 75%.

Landscapes

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

Abstract

L'invention concerne un procédé de préparation de minerai fritté à partir d'un mélange de concentré de magnétite de vanadium-titane comportant du chrome (CVTM) riche en vanadium et de qualité élevée. Le procédé comprend les étapes suivantes : (1) la préparation d'une poudre de concentré CVTM riche en vanadium de qualité élevée, d'une poudre de concentré de bore, d'une poudre de concentré de fer, d'un déchet contenant du chrome extrait de vanadium, de calcaire, de fines de flux, d'un combustible et de fines de retour en tant que matières premières; (2) le broyage du combustible, et le mouillage des fines de retour avec de l'eau; (3) la préparation d'eau à mélanger; (4) l'ajout d'eau suivi d'une granulation; (5) la distribution d'une couche de matériau épaisse pour l'allumage et le frittage afin de former un minerai fritté chaud; (6) le broyage et le tamisage du minerai chaud, et le refroidissement de la partie du minerai avec une taille de particule ≥ 5 mm; et (7) la pulvérisation d'un inhibiteur contenant du chlore avant l'utilisation dans des hauts fourneaux.
PCT/CN2018/088040 2017-06-29 2018-05-23 Procédé de préparation de minerai fritté à partir d'un mélange concentré de magnétite de vanadium-titane comportant du chrome, riche en vanadium et de qualité élevée Ceased WO2019001180A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710513046.7 2017-06-29
CN201710513046.7A CN107267749B (zh) 2017-06-29 2017-06-29 高品位高钒含铬型钒钛磁铁精矿混合料制备烧结矿的方法

Publications (1)

Publication Number Publication Date
WO2019001180A1 true WO2019001180A1 (fr) 2019-01-03

Family

ID=60070249

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/088040 Ceased WO2019001180A1 (fr) 2017-06-29 2018-05-23 Procédé de préparation de minerai fritté à partir d'un mélange concentré de magnétite de vanadium-titane comportant du chrome, riche en vanadium et de qualité élevée

Country Status (2)

Country Link
CN (1) CN107267749B (fr)
WO (1) WO2019001180A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111748685A (zh) * 2020-07-14 2020-10-09 重庆大学 一种用于高炉冶炼超高配比钒钛磁铁矿的炉料结构
CN113913608A (zh) * 2021-10-13 2022-01-11 四川德胜集团钒钛有限公司 一种高品位钒钛磁铁矿制备烧结矿的方法
CN114015869A (zh) * 2021-10-27 2022-02-08 重庆臻焱节能环保科技有限公司 基于烧结返矿的冷压球生产工艺
CN118957252A (zh) * 2024-07-26 2024-11-15 包头钢铁（集团）有限责任公司 一种利用高比例铁精矿生产烧结矿的方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107267749B (zh) * 2017-06-29 2018-10-23 东北大学 高品位高钒含铬型钒钛磁铁精矿混合料制备烧结矿的方法
CN107937714A (zh) * 2017-11-19 2018-04-20 东北大学 一种低铬型钒钛磁铁矿配加钛铁矿制备烧结矿的方法
CN107881330A (zh) * 2017-11-19 2018-04-06 东北大学 一种高铬型钒钛磁铁矿配加钛铁矿制备烧结矿的方法
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
CN107881331A (zh) * 2017-11-19 2018-04-06 东北大学 一种低铬型钒钛磁铁矿配加普通铁矿制备烧结矿的方法
CN107881327A (zh) * 2017-11-19 2018-04-06 东北大学 一种高铬型钒钛磁铁矿配加普通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
CN110586312B (zh) * 2019-08-26 2021-04-13 昆明理工大学 一种钒铬尾渣回收钒铬铁的方法
CN113604665A (zh) * 2021-08-12 2021-11-05 北京科技大学 一种将硼铁精矿用于烧结的工艺方法
CN113957239A (zh) * 2021-10-08 2022-01-21 金鼎重工有限公司 一种低NOx排放的高质高效烧结工艺
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
CN114480836B (zh) * 2021-12-22 2023-09-12 武钢集团昆明钢铁股份有限公司 一种高配比钒钛磁铁精矿的低成本烧结矿及其制备方法
CN117051179A (zh) * 2023-08-11 2023-11-14 攀钢集团研究院有限公司 一种高钛型钒钛磁铁矿大型高炉稳定顺行的操作方法
CN117737410A (zh) * 2023-11-16 2024-03-22 攀钢集团攀枝花钢铁研究院有限公司 一种提高铁酸钙物相含量的钒钛烧结矿的制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004270036A (ja) * 2004-04-27 2004-09-30 Tokyo Tandai:Kk 有用金属含有廃棄物からの有用金属の回収方法
WO2010072999A2 (fr) * 2008-12-23 2010-07-01 Oxonica Materials Limited Procédé de frittage
CN104561530A (zh) * 2014-12-26 2015-04-29 河北钢铁股份有限公司承德分公司 中钛型高强度烧结矿及其制备方法
CN104630449A (zh) * 2015-02-09 2015-05-20 东北大学 一种用高铬型钒钛混合料制备烧结矿的方法
CN105177279A (zh) * 2015-08-21 2015-12-23 东北大学 一种提高高铬型钒钛烧结矿质量的方法
CN107267749A (zh) * 2017-06-29 2017-10-20 东北大学 高品位高钒含铬型钒钛磁铁精矿混合料制备烧结矿的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014325B (zh) * 2012-12-10 2015-09-02 攀钢集团研究院有限公司 细白马钒钛磁铁精矿的烧结方法
CN104480299B (zh) * 2015-01-14 2017-04-12 东北大学 一种含铬型钒钛磁铁精矿配加弃渣制备烧结矿的方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004270036A (ja) * 2004-04-27 2004-09-30 Tokyo Tandai:Kk 有用金属含有廃棄物からの有用金属の回収方法
WO2010072999A2 (fr) * 2008-12-23 2010-07-01 Oxonica Materials Limited Procédé de frittage
CN104561530A (zh) * 2014-12-26 2015-04-29 河北钢铁股份有限公司承德分公司 中钛型高强度烧结矿及其制备方法
CN104630449A (zh) * 2015-02-09 2015-05-20 东北大学 一种用高铬型钒钛混合料制备烧结矿的方法
CN105177279A (zh) * 2015-08-21 2015-12-23 东北大学 一种提高高铬型钒钛烧结矿质量的方法
CN107267749A (zh) * 2017-06-29 2017-10-20 东北大学 高品位高钒含铬型钒钛磁铁精矿混合料制备烧结矿的方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111748685A (zh) * 2020-07-14 2020-10-09 重庆大学 一种用于高炉冶炼超高配比钒钛磁铁矿的炉料结构
CN111748685B (zh) * 2020-07-14 2022-03-08 重庆大学 一种用于高炉冶炼超高配比钒钛磁铁矿的炉料结构
CN113913608A (zh) * 2021-10-13 2022-01-11 四川德胜集团钒钛有限公司 一种高品位钒钛磁铁矿制备烧结矿的方法
CN114015869A (zh) * 2021-10-27 2022-02-08 重庆臻焱节能环保科技有限公司 基于烧结返矿的冷压球生产工艺
CN118957252A (zh) * 2024-07-26 2024-11-15 包头钢铁（集团）有限责任公司 一种利用高比例铁精矿生产烧结矿的方法

Also Published As

Publication number Publication date
CN107267749B (zh) 2018-10-23
CN107267749A (zh) 2017-10-20

Similar Documents

Publication Publication Date Title
WO2019001180A1 (fr) Procédé de préparation de minerai fritté à partir d'un mélange concentré de magnétite de vanadium-titane comportant du chrome, riche en vanadium et de qualité élevée
CN107312899B (zh) 一种高品位高钒含铬型钒钛磁铁精矿的高炉冶炼方法
CN105838838B (zh) 一种煤制气直接还原一步法制取纯净钢的方法
CN113174456B (zh) 一种底顶复合吹熔融还原高铁赤泥的综合利用方法
CN104328242B (zh) 含钒钛高磷铁水的炼钢方法
CN105219953B (zh) 一种高铁锰矿粉烧结配矿的方法
CN102534086B (zh) 一种以钛精矿为原料制取高品位金属铁和富钛渣的方法
CN108950189A (zh) 一种利用废弃镁碳砖生产含MgO烧结矿的方法
CN113957185B (zh) 一种高炉冶炼钒钛磁铁矿的炉料配方
CN102268502B (zh) 用还原回转窑冶炼难选铁矿(渣)制取海绵铁的方法
CN101921909B (zh) 控制烧结矿中氧化亚铁含量的方法
CN105463214B (zh) 一种采用低贫品位红土镍矿生产高镍铁的方法
CN110453025A (zh) 一种高钙含钒钢渣冶炼富钒生铁的方法
CN101967530A (zh) 一种电冶熔融还原铁的方法
CN103757165A (zh) 一种高铁铝土矿高炉冶炼有价组元综合利用方法
CN115010170B (zh) 一种利用含钛高炉渣制备TiCl4的方法
CN104328361A (zh) 抗震钢筋及其制备方法
Ambasta et al. Utilization of solid waste from steel melting shop
CN1035848A (zh) 钒铬浸出尾渣炼铁综合利用工艺
CN108950361A (zh) 一种炼钢方法
CN111057843B (zh) 一种利用含钒钢渣生产含钒生铁的方法
CN108660272B (zh) 一种高炉复合护炉炉料及其制备和护炉方法
CN118726683B (zh) 一种corex冶炼钒钛磁铁矿的方法
CN108642273B (zh) 一种转炉渣改质用的铁碳硅双层复合球团及其制备方法
CN104694702B (zh) 提钒铬转炉溅渣护炉用的添加剂

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18825542

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18825542

Country of ref document: EP

Kind code of ref document: A1