suitable swelling index required for pellet blast furnace

  • Karnataka India Studies on composite pre-reduced pellets of

    good strength of 204 kgs/pellet with porosity 24.0 swelling index 16.60 and metallisation 78.5 . The composite pellets produced can be subjected to reduction efficiently which gives man) advantages as a blast furnace feed in the steel industry in addition to conservation of mineral resources and effective utilisation of iron ore fines in

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  • IS 8624 (1995) Method for determination of swelling index

    may have an adverse effect on operation of a blast-furnace. Since swelling is an inherent property of pellets a blast furnace operator should know the extent of swelling of pellets. This standard gives a method for determining the swelling index of indurated iron ore pellets.

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  • Iron Ore Pellets Versus Sinter In Blast Furnace

    Ian Cameron William Davenport in Blast Furnace Ironmaking 2020. 54.4.5.5 Free Swelling Index ISO 4698 The free swelling test determines the volume increase of iron ore pellets during reduction. When pellets were first introduced a swelling tendency led to damage to the BF stack poor permeability to gas flow and irregular burden descent. Learn More

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  • Iron Ore Pellets Versus Sinter In Blast Furnace

    Ian Cameron William Davenport in Blast Furnace Ironmaking 2020. 54.4.5.5 Free Swelling Index ISO 4698 The free swelling test determines the volume increase of iron ore pellets during reduction. When pellets were first introduced a swelling tendency led to damage to the BF stack poor permeability to gas flow and irregular burden descent. Learn More

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  • Pellet Reduction Properties under Different Blast Furnace

    1.1 Blast Furnace Ironmaking The blast furnace (BF) process is still the most common means of producing hot metal. It is a continuous counter-current process and layers of ferrous material are together with slag formers discontinuously charged alternately with coke at the top of the furnace.

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  • TO STUDY THE REDUCTION SWELLING BEHAVIOUR OF

    2.5 Industrial significance- 12 2.6 Mechanism of swelling- 12-13 2.7 Thermodynamics and kinetics of iron ore reduction- 13-15 Chapter 3 16-20 3. Experimental 16-20 3.1 Material Selection- 17-18 3.2 Experimental Procedure- 18-19 3.3 Determination of degree of reduction of Iron-ore pellets- 19 3.4 Determination of degree of 19swelling- -20 3.5 Determination of Drop Number- 20

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  • Development of fluxed blast furnace pellets with

    suitable for possible replacement of MPBO pellets in Nordic blast furnaces. The MPB1 fluxed pellet composition and metallurgical results are compared to MPBO in Tables 2 and 3. The chemistry of the MPB1 is suitable because it allows removal of some of the limestone charged to the furnace. This in turn decreases the required thermal energy and

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  • Flux Used For Production Of Iron Ore Pallet

    suitable swelling index required for pelletblast furnace TISCO is using it in their blast furnace as substitute for iron ore flux additives on iron ore of iron ore pellet manufacturing used in blast

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  • Improving reducibility of iron ore pellets by optimization

    sinter in blast furnaces is increasing day by day to utilize fines and concentrates replacing lump ore. Reducibility mostly depends upon the individual ore character and its agglomeration parameters. To increase the performance of pellet in blast furnace it is required to improve the reducibility of hematite pellet.

    Get Price
  • Reducibility and reduction swelling behaviour of some iron

    A blast furnace is a shaft furnace which is charged with iron bearing materials (pellets sinters and/or lump ore) reducing agents (metallurgical coke) and additives (limestone quartz BOF slag). Metallurgical coke and auxiliary reducing agents (coal oil natural gas) are used to reduce iron oxides and melt the charge materials.

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  • IS 11336 (1985) Guidelines for heat hardened iron ore

    May 30 1985 · 0.4 The exact requirement of pellet properties however depend upon local factors for example extent of use of pellets in blast furnace size of blast furnace extent of adoption of technological improvements in blast furnace operation availability of

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  • IS 8624 (1995) Method for determination of swelling index

    may have an adverse effect on operation of a blast-furnace. Since swelling is an inherent property of pellets a blast furnace operator should know the extent of swelling of pellets. This standard gives a method for determining the swelling index of indurated iron ore pellets.

    Get Price
  • Pelletizing Plants BOLLFILTER

    Pelletizing is the process through which iron ore fines are transformed into an agglomerated form called "iron ore pellets" suitable for use in an iron-making furnace at a steel mill such as a blast furnace or electric arc furnace.

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  • Pellets The Hira Group

    Our final fired Iron Ore Pellet acquires the best techno commercial and required physico-metallurgical properties for Direct Reduction Iron /Blast Furnace for Iron making. We continue to endeavor to be the best Raw Material solution for the DRI / BF segment of Steel Industry with many more innovations in

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  • Improving reducibility of iron ore pellets by optimization

    sinter in blast furnaces is increasing day by day to utilize fines and concentrates replacing lump ore. Reducibility mostly depends upon the individual ore character and its agglomeration parameters. To increase the performance of pellet in blast furnace it is required to improve the reducibility of hematite pellet.

    Get Price
  • Preparation of MgO added iron ore pellets and effects on a

    PrEParatIon of Mgo addEd Iron orE PEllEtS and EffEctS on a PIlot ScalE BlaSt furnacE oPEratIon t.-J. chun a G.-t.Mu a Q.-M. Meng a H.-M. long ab P. Wang a c.-G. Bi c a School of Metallurgical Engineering Anhui University of Technology Ma anshan Anhui China b Key Laboratory of Metallurgical Emission Reduction Resources Recycling Ministry of Education

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  • Effect of Fluxing Agents on the Quality and Microstructure

    Jun 01 2017 · 3.2.4. Swelling Index Figure 9 (b) shows the swelling index of pellets with varying MgO content. From the results it is evident that swelling index was found to decrease with increase in pellet MgO and a minimum of 1.5 MgO is required to curtail the swelling as desired by blast furnace.

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  • Critical factors in the development of BF burden materials

    blast furnace LKAB produces 2 types of blast furnace pellets- a recently developed acid pellet the KPBA pellet with 2.5 SiO 2 designed for use with sinter and the Olivine pellets (KPBO and MPBO) for use either in mixed burdens or in 100 pellet operations. The development process for new blast furnace pellets such as the KPBA required

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  • Iron Ore Pelletizing Process An Overview IntechOpen

    Jul 10 2017 · The iron ore production has significantly expanded in recent years owing to increasing steel demands in developing countries. However the content of iron in ore deposits has deteriorated and low-grade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. This chapter shows the status of the pelletizing process

    Get Price
  • Iron Ore Pellets Versus Sinter In Blast Furnace

    Ian Cameron William Davenport in Blast Furnace Ironmaking 2020. 54.4.5.5 Free Swelling Index ISO 4698 The free swelling test determines the volume increase of iron ore pellets during reduction. When pellets were first introduced a swelling tendency led to damage to the BF stack poor permeability to gas flow and irregular burden descent. Learn More

    Get Price
  • Preparation of MgO added iron ore pellets and effects on a

    PrEParatIon of Mgo addEd Iron orE PEllEtS and EffEctS on a PIlot ScalE BlaSt furnacE oPEratIon t.-J. chun a G.-t.Mu a Q.-M. Meng a H.-M. long ab P. Wang a c.-G. Bi c a School of Metallurgical Engineering Anhui University of Technology Ma anshan Anhui China b Key Laboratory of Metallurgical Emission Reduction Resources Recycling Ministry of Education

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  • PELLETISATIONMetal Bulletin

    Induration furnaces for capacities between 0.8 and 3.0 mt/a considered Production of high quality Blast Furnace and Direct Reduction grade pellets as well as Manganese pellets Circular Pelletizing Technology Characteristics and Design Criteria

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  • Sustainable way of Pelletization

    Pellet has negligible LOI negligible sulphur high porosity high reducibility high strength high tumbling index low abrasion index low RDI low swelling index uniform size distribution and balanced chemistry resulting improvement of blast furnace productivity and coke rate. • Tata Steel Pellet Plant Commissioned on January 2012

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  • Iron Ore Pelletizing Process An Overview IntechOpen

    Jul 10 2017 · The iron ore production has significantly expanded in recent years owing to increasing steel demands in developing countries. However the content of iron in ore deposits has deteriorated and low-grade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. This chapter shows the status of the pelletizing process

    Get Price
  • Production and Usage of Self-Reducing Pellets in Blast

    impact index 73.1–80.04 abrasion index 10.8 carbon residue content 1.1. Carrying out blast furnace smelting at blast furnace ДП-1 of Konstantinovka Iron and Steel Works the pellets of Poltava Mining and Processing Works were substituted by 20–25 of the self-reducing carbon pellets. The results of the blast furnace smelting

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  • Improving reducibility of iron ore pellets by optimization

    sinter in blast furnaces is increasing day by day to utilize fines and concentrates replacing lump ore. Reducibility mostly depends upon the individual ore character and its agglomeration parameters. To increase the performance of pellet in blast furnace it is required to improve the reducibility of hematite pellet.

    Get Price
  • Preparation of MgO added iron ore pellets and effects on a

    PrEParatIon of Mgo addEd Iron orE PEllEtS and EffEctS on a PIlot ScalE BlaSt furnacE oPEratIon t.-J. chun a G.-t.Mu a Q.-M. Meng a H.-M. long ab P. Wang a c.-G. Bi c a School of Metallurgical Engineering Anhui University of Technology Ma anshan Anhui China b Key Laboratory of Metallurgical Emission Reduction Resources Recycling Ministry of Education

    Get Price
  • PELLETISATIONMetal Bulletin

    Induration furnaces for capacities between 0.8 and 3.0 mt/a considered Production of high quality Blast Furnace and Direct Reduction grade pellets as well as Manganese pellets Circular Pelletizing Technology Characteristics and Design Criteria

    Get Price
  • Improvement of roasting and metallurgical properties of

    Oct 01 2020 · The reduction index of FICP was improved to 69.95 with the addition of titanium slag which will be suitable for blast-furnace smelting. Besides the reduction disintegration index (RDI 3.15) shows a small decrease with the addition of titanium slag. It may have an insignificant influence on the smelting of blast furnace.

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  • Flux Used For Production Of Iron Ore Pallet

    suitable swelling index required for pelletblast furnace TISCO is using it in their blast furnace as substitute for iron ore flux additives on iron ore of iron ore pellet manufacturing used in blast

    Get Price
  • PELLETISATIONMetal Bulletin

    Induration furnaces for capacities between 0.8 and 3.0 mt/a considered Production of high quality Blast Furnace and Direct Reduction grade pellets as well as Manganese pellets Circular Pelletizing Technology Characteristics and Design Criteria

    Get Price
  • Sintering Characteristics Of Itakpe And Agbaja Iron Ore

    common and suitable sources of feeds to the blast furnace. The process of sintering comprises high temperature-treatment (above 10000C) of iron fines on a moving grate blended with fluxes and coke breeze (finely divided coke) to form hard lumps or iron-rich material suitable for use as blast furnace feed (Williams 1983). In iron ore sintering

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  • Technological Changes in Blast Furnace Iron Making in

    outside the Blast Furnace during making of fluxed sinter/pellets 8 . 1 increase of sinter in burden can reduce coke rate up to 1.5 kg/THM. Pellets give better bed permeability due to spherical shape and better gas-solid contact for its highest surface area/volume ratio but cracks develop for its high swelling index during its reduction stage

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  • REDUCTION AND SWELLING BEHAVIOUR OF FIRED IRON

    comes from the Induction Furnace sector using sponge iron 1 . Sponge iron plants use only lumps and are located in areas in near vicinity of iron ore mines. As hard ore reserves are depleting lump generation suitable for blast furnace operation is coming down which results in large amount of

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  • Reducibility and reduction swelling behaviour of some iron

    A blast furnace is a shaft furnace which is charged with iron bearing materials (pellets sinters and/or lump ore) reducing agents (metallurgical coke) and additives (limestone quartz BOF slag). Metallurgical coke and auxiliary reducing agents (coal oil natural gas) are used to reduce iron oxides and melt the charge materials.

    Get Price
  • Use of Iron Ore Pellets in Blast Furnace BurdenIspatGuru

    Jun 13 2014 · This in turn causes burden hanging and slipping inside the blast furnace. The addition of dolomite is favorable for the improvement in swelling property of pellets. Maximum allowable swelling of pellets for the blast furnace ranges from 16 to 18 . Acid pellets (DRI pellets) and MgO free pellets exhibit higher swelling.

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  • Technological Changes in Blast Furnace Iron Making in

    outside the Blast Furnace during making of fluxed sinter/pellets 8 . 1 increase of sinter in burden can reduce coke rate up to 1.5 kg/THM. Pellets give better bed permeability due to spherical shape and better gas-solid contact for its highest surface area/volume ratio but cracks develop for its high swelling index during its reduction stage

    Get Price