WO2018170767A1 - 球团矿、其制备方法和制备装置 - Google Patents

球团矿、其制备方法和制备装置 Download PDF

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Publication number
WO2018170767A1
WO2018170767A1 PCT/CN2017/077613 CN2017077613W WO2018170767A1 WO 2018170767 A1 WO2018170767 A1 WO 2018170767A1 CN 2017077613 W CN2017077613 W CN 2017077613W WO 2018170767 A1 WO2018170767 A1 WO 2018170767A1
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WO
WIPO (PCT)
Prior art keywords
powder
pellet
preparing
ore
screen
Prior art date
Application number
PCT/CN2017/077613
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
张卫东
青格勒
田筠清
张彦
蔡皓宇
赵志星
裴元东
马泽军
赵勇
王晓鹏
安钢
黄文斌
霍吉祥
刘文旺
李明
Original Assignee
首钢总公司
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 首钢总公司 filed Critical 首钢总公司
Priority to KR1020197002292A priority Critical patent/KR102285165B1/ko
Priority to JP2018568206A priority patent/JP6767519B2/ja
Priority to PCT/CN2017/077613 priority patent/WO2018170767A1/zh
Priority to CN201780051133.3A priority patent/CN110402293B/zh
Priority to AU2017405434A priority patent/AU2017405434B2/en
Priority to BR112019002449-2A priority patent/BR112019002449A2/pt
Publication of WO2018170767A1 publication Critical patent/WO2018170767A1/zh

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    • 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
    • C22B1/02—Roasting processes
    • 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

Definitions

  • the invention relates to the technical field of sintered ore powder, in particular to a pellet, a preparation method thereof and a preparation device.
  • Pellet ore and sinter are the main charge for blast furnace ironmaking.
  • the sinter ore is prepared by mixing various powdery iron-containing raw materials into a certain proportion of fuel and flux as required, and uniformly granulating and sintering on the sintering machine.
  • the iron ore fine powder for sintering is relatively coarse in particle size, and the particle size requirement is relatively low, and a plurality of mineral powders can be used.
  • Pellet ore production requires relatively high raw materials, requiring pellets with a certain particle size and particle size composition, suitable moisture and uniform chemical composition.
  • the general pellet powder is finely ground and selected ore powder, which has high grade, fine particle size and low content of harmful components. Therefore, the pellets have relatively few types of raw materials, relatively low yields, and relatively high prices.
  • the cold quality of pellets and the environmental performance of the production process are better than sintering.
  • the sinter has low strength, high returning rate, large amount of exhaust gas in the production process, high dust concentration, large amount of dust, and generation of pollutants such as dioxins.
  • the energy consumption of the sintering process is twice that of the pellet process. the above.
  • the amount of exhaust gas in the pellet production process is relatively low, and there are very few pollutants such as dioxins in the production process, low energy consumption in the process, and low dust content.
  • the development of pellet technology, the production and use of pellets is a trend. To develop pellets, first of all, there must be sufficient and cost-effective mineral resources. However, the current global pellets are still limited and the price is relatively high, which has made it difficult for steel companies worldwide to develop pellets. Process.
  • the present invention provides a pellet, a preparation method thereof and a preparation apparatus which are capable of using a sintered ore powder to prepare a pellet, thereby being more suitable for practical use.
  • the mass percentage of each component of the pellets provided by the present invention includes: TFe: 62.1% to 65.82%, FeO: 0.2% to 0.58%, SiO 2 : 1.90% to 5.97%, and CaO: 0.17% to 3.23. %, MgO: 0.18% to 0.52%, Al 2 O 3 : 0.58% to 2.66%, mass ratio of CaO to SiO 2 : 0.035 to 1.31;
  • the technical solution of the method for preparing pellets provided by the present invention is as follows:
  • the preparation method of the pellets provided by the invention comprises the following steps:
  • Pellet powder and/or boron-containing pellet powder the fine grinding sintered powder is ore-matched to obtain concentrate powder;
  • the intermediate mixture is passed through a pelletizing and calcining process in sequence to produce the pellet.
  • the preparation device of the pellet ore provided by the invention comprises a grinding device, a container, a pelletizing device, a roasting system,
  • the grinding device is used for fine grinding the sintered ore powder to obtain a fine grinding sintered powder having set parameters
  • the container is used for accommodating pellets and/or boron-containing ore powder, finely ground powder obtained by ore blending of the finely ground sintered powder; and an intermediate mixture obtained by adding a binder to the concentrate powder;
  • the pelletizing device is configured to pellet the intermediate product to obtain a spherical intermediate product
  • the calcination system is used in a calcination process of the spherical intermediate product, and the pellet is obtained through the calcination process.
  • the pellets provided by the invention are prepared by sintering ore powder, that is, the pellets with good quality and relatively low environmental cost can be prepared by using the ore fine powder with poor quality and relatively high environmental cost,
  • the green development of the metallurgical industry has opened up a simple and beneficial approach.
  • the pellet ore provided by the present invention can be obtained by the preparation method and preparation device of the pellet ore provided by the present invention, that is, the sintered ore powder with poor quality and relatively high environmental cost can be prepared to obtain better quality and environment.
  • the relatively low cost pellets have created a simple and beneficial way for the green development of the metallurgical industry.
  • FIG. 1 is a flow chart showing the steps of a method for preparing a pellet ore according to an embodiment of the present invention
  • FIG. 2 is a flow chart of material changes in a process for preparing a pellet ore according to an embodiment of the present invention
  • FIG. 3 is a flow chart showing the steps of a roasting process involved in a method for preparing a pellet ore according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing a connection relationship between devices in a pelletizing apparatus according to an embodiment of the present invention.
  • Figure 5 is a physical photograph of the sinter
  • FIG. 6 is a photo photograph of a pellet of a pellet obtained by the preparation method and the preparation apparatus provided by the embodiment of the present invention.
  • the present invention provides a pellet, a preparation method thereof and a preparation device, which are capable of applying a sinter powder to prepare a pellet, thereby being more suitable for practical use.
  • a and B in this context is merely an association that describes an associated object, indicating that there may be three relationships, for example, A and/or B.
  • a and B can be included at the same time, and can be separate. If A exists, B may exist alone, and any of the above three cases may be provided.
  • Fine-grinding the Baca mineral powder to obtain fine-ground Baca mineral powder wherein the fine-grained Baca mineral powder has a mass percentage of particles of ⁇ 74 ⁇ m ⁇ 80%, and the quality of particles with particle size ⁇ 44 ⁇ m The percentage is >60%.
  • Weigh 99.0kg of concentrate powder of fine grinding Baka mineral powder add 0.6kg bentonite as binder, 3.3kg slaked lime as calcium-containing flux, water as liquid medium, and mix to obtain intermediate product. In the intermediate product, the moisture content was 7.0% by weight. Place the intermediate product on the disc The ball is formed in the pelletizer, and the peening time lasts for 10 minutes.
  • the green ball with the particle size of 9 mm to 16 mm is sieved, and the roasting process is completed in the baking cup to obtain the pellet.
  • the roasting process comprises: the raw ball is first subjected to blast drying, the temperature is 320 ° C, the duration is 3 minutes, and then the air is dried, the temperature is 450 ° C, the duration is 5 minutes, and then preheated, the temperature is 1000 ° C, and the duration is After 6 minutes, the calcination was carried out at a temperature of 1290 ° C for a duration of 10 minutes, followed by soaking at a temperature of 1150 ° C for a duration of 3 minutes; the pellet after soaking was cooled to 150 ° C with air.
  • the mass percentages of the components in the pellet are: TFe: 63.46%, FeO: 0.56%, SiO 2 : 2.32%, CaO: 2.76%, MgO: 0.27%, Al 2 O 3 : 2.01%, CaO
  • the mass ratio to SiO 2 was 1.19.
  • the compressive strength of the pellet was 2879 N/P, the drum index was 93.2%, the reduction expansion ratio was 17.2%, and the reduction degree was 73.5%.
  • Example 1-18 provides the mass percentage of each component in the pellets and other indicators
  • the requirements for the pellet quality of the qualified quality are: compressive strength > 2400 N, reduction expansion ratio ⁇ 20%; considering the above-mentioned Examples 1 to 18 of the present invention, it is understood that the above-described Embodiments 1 to 18 of the present invention are satisfied.
  • the above indicators require that, therefore, the quality of the pellets obtained by using Examples 1 to 18 of the present invention is acceptable.
  • hematite (chemical formula: Fe 2 O 3 ) sintered powder can be used alone or with different proportions of magnetite (chemical formula: Fe 3 O 4 ) pellet powder, if it contains limonite (chemical formula is Fe 2 O) 3 ⁇ H 2 O)
  • Sintered powder is formulated with 50 to 90% of magnetite pellet powder or hematite (chemical formula of Fe 2 O 3 ) sintered powder or 5 to 10% of boron-containing pellet powder.
  • Figure 5 shows a sintered ore
  • Figure 6 shows the pellets, from As can be seen from Figure 6, the appearance of the pellets is a regular circular structure.
  • a pelletizing apparatus provided in Embodiment 19 of the present invention includes a grinding apparatus, a container, a pelletizing apparatus, and a baking system.
  • the grinding device is used for finely grinding the sintered ore powder to obtain a fine grinding sintered powder having set parameters; the container is used for accommodating the concentrate of the pellet ore and/or the boron-containing ore powder and the finely ground sintered powder through the ore blending.
  • the obtained pellets are acidic pellets.
  • the pellets having a mass ratio of CaO to SiO 2 of ⁇ 0.6 are acidic balls.
  • the intermediate mixture also includes a calcium-containing flux.
  • the calcium-containing flux is usually slaked lime (Ca(OH) 2 ) or limestone (CaCO 3 ), and the obtained pellet is obtained as a flux pellet or a self-fluxing pellet.
  • a pellet having a mass ratio of CaO to SiO 2 of >0.6 is a flux pellet, wherein a pellet having a mass ratio of CaO to SiO 2 of 0.8 to 1.2 is a self-fluxing pellet.
  • the apparatus for preparing pellets provided in Embodiment 13 of the present invention further includes a first screen and a second screen.
  • the screen diameter of the first screen was 74 ⁇ m
  • the diameter of the screen of the second screen was 44 ⁇ m.
  • the particles trapped on the first screen are judged to have a particle size of >74 ⁇ m
  • the particles capable of passing through the first screen are judged to have a particle diameter of ⁇ 74 ⁇ m; further, they are trapped in the second sieve.
  • the particles above the web were judged to have a particle size of > 44 ⁇ m
  • the particles capable of passing through the second screen were judged to have a particle diameter of ⁇ 44 ⁇ m.
  • a shaker apparatus can also be provided, which is used for the first screen and/or the second screen.
  • the web is shaken in a horizontal direction such that the various angles of the particles above the first screen and/or the second screen are likely to contact the screen openings, avoiding the particles and the first screen and/or the second screen Mistakes caused by misalignment of the contact angle of the net.
  • a first stirring mechanism and/or a second stirring mechanism may be provided, the first stirring mechanism For agitating the upper surface of the first screen, the second stirring mechanism is for stirring the upper surface of the second screen so as to directly cover the surface of the first screen and/or the surface of the second screen The particles are in an active state, further enhancing the screening efficiency of the first screen and/or the second screen.
  • the second screen is arranged below the first screen.
  • the mesh aperture of the first screen > the aperture of the mesh of the second screen, the particle size leaked from the first screen ⁇ the aperture of the first screen
  • the particles can fall directly on the surface of the second screen, so that it is no longer necessary to transfer to the surface of the second screen by means of the transfer container, so that the technical solution is simpler and the operation is more convenient.
  • the apparatus for preparing pellets according to the thirteenth embodiment of the present invention further includes a third screen, wherein the diameter of the third screen is in the range of 9 mm to 16 mm, and the third screen is used for screening the range of the particle diameter. It is a raw ball of 9mm to 16mm.
  • the apparatus for preparing pellets provided in Embodiment 19 of the present invention further includes a clock for measuring time intervals of the pelletizing and/or firing process.
  • a clock for measuring time intervals of the pelletizing and/or firing process.
  • the time control of the pelletizing and/or firing process can be made more precise.
  • an alarm can also be set. When the peening time reaches a preset time, the alarm automatically issues an alarm, and the alarm can be selected from a buzzer, a signal light, a short message, a qq message. Any one or several of voice messages and WeChat messages.
  • a conveying mechanism can be provided to automatically feed the raw ball into the roasting system through the conveying mechanism, thereby making the operation more convenient and quick.
  • the apparatus for preparing pellets provided in Embodiment 19 of the present invention further includes a temperature control device for adjusting the temperature of the baking system.
  • a temperature control device for adjusting the temperature of the baking system. In this case, the temperature of each stage of the baking process can be more accurately controlled, and the test result is more accurate.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
PCT/CN2017/077613 2017-03-22 2017-03-22 球团矿、其制备方法和制备装置 WO2018170767A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020197002292A KR102285165B1 (ko) 2017-03-22 2017-03-22 광석 펠렛의 제조 방법 및 제조 장치
JP2018568206A JP6767519B2 (ja) 2017-03-22 2017-03-22 ペレット鉱、その製造方法及び製造装置
PCT/CN2017/077613 WO2018170767A1 (zh) 2017-03-22 2017-03-22 球团矿、其制备方法和制备装置
CN201780051133.3A CN110402293B (zh) 2017-03-22 2017-03-22 球团矿、其制备方法和制备装置
AU2017405434A AU2017405434B2 (en) 2017-03-22 2017-03-22 Ore pellet, preparation method therefor, and preparation equipment
BR112019002449-2A BR112019002449A2 (pt) 2017-03-22 2017-03-22 Pélete, processo de preparação e equipamento para preparação do mesmo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/077613 WO2018170767A1 (zh) 2017-03-22 2017-03-22 球团矿、其制备方法和制备装置

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JP (1) JP6767519B2 (ko)
KR (1) KR102285165B1 (ko)
CN (1) CN110402293B (ko)
AU (1) AU2017405434B2 (ko)
BR (1) BR112019002449A2 (ko)
WO (1) WO2018170767A1 (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113584303A (zh) * 2021-08-06 2021-11-02 舞钢中加钢铁有限公司 一种可提升成品球团质量的生产配料及其制备工艺
CN114196822A (zh) * 2021-12-03 2022-03-18 河南锦瀚环保科技有限公司 一种圆盘造球烧结球团矿新型粘合剂及其制备方法
CN115491488A (zh) * 2022-09-21 2022-12-20 宝武集团鄂城钢铁有限公司 一种低巴西混合粉使用量的烧结用含铁料、烧结组合物、烧结矿及其制备方法

Families Citing this family (3)

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KR102224473B1 (ko) * 2020-12-14 2021-03-08 이앤티스소재 주식회사 철강공정 부산물을 활용한 제강용 철 대체재 단광
CN116179846B (zh) * 2023-01-29 2024-06-14 中天钢铁集团(南通)有限公司 一种具有高比例赤褐铁矿的球团生产方法
CN116855731A (zh) * 2023-06-29 2023-10-10 鞍钢股份有限公司 一种稳定烧结矿氧化亚铁含量的调整方法

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CN101688254A (zh) * 2007-05-08 2010-03-31 株式会社神户制钢所 高炉用自熔性球团矿及其制造方法
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US20140033872A1 (en) * 2012-08-06 2014-02-06 Mika Martikainen Binder compositions and processes of preparing iron ore pellets
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CN104561534A (zh) * 2015-01-26 2015-04-29 内蒙古包钢钢联股份有限公司 一种含镁熔剂性氧化球团矿及其制备方法

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CN101688254A (zh) * 2007-05-08 2010-03-31 株式会社神户制钢所 高炉用自熔性球团矿及其制造方法
CN101896627A (zh) * 2007-12-20 2010-11-24 株式会社神户制钢所 高炉用自熔性球团矿及其制造方法
US20140033872A1 (en) * 2012-08-06 2014-02-06 Mika Martikainen Binder compositions and processes of preparing iron ore pellets
CN103725875A (zh) * 2013-12-30 2014-04-16 吴雪健 一种高性能的球团矿
CN104561534A (zh) * 2015-01-26 2015-04-29 内蒙古包钢钢联股份有限公司 一种含镁熔剂性氧化球团矿及其制备方法

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Publication number Priority date Publication date Assignee Title
CN113584303A (zh) * 2021-08-06 2021-11-02 舞钢中加钢铁有限公司 一种可提升成品球团质量的生产配料及其制备工艺
CN114196822A (zh) * 2021-12-03 2022-03-18 河南锦瀚环保科技有限公司 一种圆盘造球烧结球团矿新型粘合剂及其制备方法
CN115491488A (zh) * 2022-09-21 2022-12-20 宝武集团鄂城钢铁有限公司 一种低巴西混合粉使用量的烧结用含铁料、烧结组合物、烧结矿及其制备方法

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CN110402293A (zh) 2019-11-01
KR102285165B1 (ko) 2021-08-03
CN110402293B (zh) 2022-02-18
AU2017405434B2 (en) 2020-05-21
KR20190130554A (ko) 2019-11-22
AU2017405434A1 (en) 2019-01-24
JP6767519B2 (ja) 2020-10-14
BR112019002449A2 (pt) 2020-05-26
JP2019519687A (ja) 2019-07-11

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