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Kinetics of Carbon Oxidation During Induration of Hematite Ore Pellet

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Abstract

Hematite ore pellets require a much higher induration temperature than magnetite ore pellets because no exothermic heat is generated due to oxidation inside during induration-like magnetite pellets. Carbon is used as in situ heat source in hematite ore pellets which can reduce temperature requirement in the induration strand and hence decreases energy consumption. Many investigators have reported that a 0.8–1.25% addition of carbon in hematite pellets can improve the pellet properties also. However, to investigate the exact role of carbon in hematite pellets, its reaction mechanisms and kinetics study are required which have not been done so far. Therefore, the reaction mechanism and its kinetics have been studied in this investigation. It has been found that carbon reaction happens in pellets from the surface towards the center in a topochemical manner which is controlled by pore diffusion of gas, and its activation energy is around 52 k J mol−1. It is also found that apart from in situ heat, carbon in hematite pellets enhances diffusion bonding which improves pellet properties. This study ascertains the exact role of carbon in hematite pellets which may help operators to use carbon effectively to reduce energy consumption and improve pellet properties.

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References

  1. Umadevi T, Kumar MGS, Mahapatra PC, Babu TM, Ranjan M (2009) Recycling of steel plant mill scale via iron ore pelletisation process. Ironmak Steelmak 36:409–415

    Article  Google Scholar 

  2. Rajshekar Y, Pal J, Venugopalan T (2018) Mill scale as a potential additive to improve the quality of hematite ore pellet. Miner Process Extr Metall Rev 39(3):202–210

    Article  Google Scholar 

  3. Jiang T, Zhang YB, Huang ZC, Li GH, Fan XH (2008) Preheating and roasting characteristics of hematite-magnetite (H-M) concentrate pellets. Ironmak Steelmak 35(1):21–26

    Article  Google Scholar 

  4. Ooi TC, Campbell-Hardwick S, Zhu D, Pan J (2014) Sintering performance of magnetite-hematite-goethite and hematite-goethite iron ore blends and microstructure of products of sintering. Miner Process Extr Metall Rev 35(4):266–281

    Article  Google Scholar 

  5. Kumar PS, Ravi BP, Sivrikaya O, Nanda RK (2019) The study of pelletizing of mixed hematite and magnetite ores. Sci Sinter 51(1):27–38

    Article  Google Scholar 

  6. Ammasi A, Pal J (2016) Replacement of bentonite in hematite ore pelletisation using a combination of sodium lignosulphonate and copper smelting slag. Ironmak Steelmak 43(3):203–213

    Article  Google Scholar 

  7. Ammasi A, Pal J (2022) Reaction mechanism of in-situ carbon in hematite ore pellet during induration. Miner Process Extr Metall Rev 43(1):40–54

    Article  Google Scholar 

  8. Hasenack NA, Vos RA, Keddeman E (1985) Energy saving in the pellet plant of hoogovens Ijmuiden. In Proceedings of 4th International Symposium on Agglomeration, Toronto, Canada, Iron and Steel Society, pp 95–102

  9. Boss K, Lurgi G (1985) Methods to reduce energy consumption and increase specific production rates in straight grate pelletizing process. 4th International Symposium on Agglomeration. Canada, June, Toronto, pp 93–94

    Google Scholar 

  10. Misra R, Gupta SN (1994) Development of firing schedule to prepare compositepre-reduced (CPR) Pellets. ISIJ Int 34(6):468–475

    Article  Google Scholar 

  11. Umadevi T, Lobo NF, Desai S, Mahapatra PC (2013) Optimization of firing temperature for hematite pellets. ISIJ Int 53(9):1673–1682

    Article  Google Scholar 

  12. Pal J, Venugopalan T (2015) Carbon as in situ energy source in induration of hematite pellets and its effect on pellet properties. Ironmak Steelmak 42(2):139–147

    Article  Google Scholar 

  13. Hanninen MJ, Seppanen TE, Sundberg CR, Suardini PJ (2003) Internal carbon addition during hematite fluxed pellet production at the Tilden Mine. Min Metall Explor 20:197–198

    Google Scholar 

  14. Aubrey WM, Ketter R P (1967) Use of a solid fuel in the pelletizing shaft furnace. In Proceedings of the Society of Mining Engineers Fall Meeting, AIME, Las Vegas, pp 1–7

  15. Praes GE, De JD, Arruda LR, Tavares RP (2019) Assessment of iron ore pellets production using two charcoals with different content of materials volatile replacing partially anthracite fines. J Mater Res Technol 8(1):1150–1160

    Article  Google Scholar 

  16. Pereira PM, Bagatini MC (2018) Influence of carbon content on mechanical properties of iron ore pellets. Tecnol em Metal Mater e Mineração 15(4):481–487

    Article  Google Scholar 

  17. Tang ZK, Li GH, Zhang HL, Zhang YB, Li XQ (2013) Oxidising roasting behaviours of anthracite containing haematite pellets. Ironmak Steelmak 40(1):69–73

    Article  Google Scholar 

  18. Umadevi T, Prachethan PK, Sampath KMG, Kumar S, Ranjan M (2008) Influence of carbon addition via Corex sludge on pellet quality at JSW steel. Ironmak Steelmak 35(6):421–429

    Article  Google Scholar 

  19. Kumar DS, Sah R, Sekhar VR, Vishwanath SC (2017) Ironmak Steelmak 44(2):134–139

    Article  Google Scholar 

  20. Han H, Duan D, Yuan P (2014) Binders and bonding mechanism for RHF Briquette Made from Blast Furnace Dust. ISIJ Int 54(8):1781–1789

    Article  Google Scholar 

  21. Beale CO, Appleby JE, Butterfield P, Young PA (1963) Pelletizing. Proceedings of International symposium on recent developments in iron and steelmaking with special reference to Indian conditions, Jamshedpur, India, pp 16–28 

  22. Boss K, Lurgi G (1985) Methods to reduce energy consumption and increase specific production rates in straight grate pelletizing process. Proceedings of 4th International Symposium on Agglomeration, Toronto, Canada, Iron and Steel Society, p 93

  23. Sadrnezhaad SK, Ferdowsi A, Payab H (2008) Mathematical model for a straight grate iron ore pellet induration process of industrial scale. Comput Mater Sci 44:296–302

    Article  Google Scholar 

  24. Pal J, Ghorai S, Agarwal S, Nandi B, Chakraborty T, Das G, Prakash S (2015) Effect of Blaine fineness on the quality of hematite iron ore pellets for blast furnace. Miner Process Extr Metall Rev 36(2):83–91

    Article  Google Scholar 

  25. Ghosh A, Ghosh S (2014) A textbook of metallurgical kinetics. PHI Learning, India, pp 86–89

    Google Scholar 

  26. de Lange RSA, Keizer K, Burggraaf AJ (1995) Analysis and theory of gas transport in microporous sol-gel derived ceramic membranes. J Membr Sci 104:81–100

    Article  Google Scholar 

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Authors and Affiliations

  1. CSIR- National Metallurgical Laboratory, Jamshedpur, 831007, India

    Ammasi Ayyandurai & Jagannath Pal

  2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India

    Ammasi Ayyandurai

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  1. Ammasi Ayyandurai
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  2. Jagannath Pal
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Correspondence to Jagannath Pal.

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Ayyandurai, A., Pal, J. Kinetics of Carbon Oxidation During Induration of Hematite Ore Pellet. Mining, Metallurgy & Exploration 39, 2551–2560 (2022). https://doi.org/10.1007/s42461-022-00692-z

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