Abstract
In this study, the effect of colemanite and calcined colemanite (CC) addition on the properties of iron ore pellets is studied. The pellets are prepared in a lab without and with 0.2% colemanite and varying amounts of CC from 0 to 1.0 wt% in steps of 0.2%. A reference pellet is prepared under typical plant conditions, and the properties of the reference pellet are considered as the base value for improving the cold compressive strength (CCS) while maintaining the other parameters at an acceptable limit without altering the pellet. The study also aims to provide a detailed characterization of colemanite and calcined colemanite to better understand their behaviour during firing. The lab-scale results show that the CCS of pellets made with 0.2% colemanite was reduced by 222 points (60%) as compared to the reference pellets due to crack formation during firing. The results show an improvement in the CCS of the indurated pellets with CC dosage up to 0.4%, and decreasing strength is noted thereafter. It is observed that the swelling index increases with the increase in calcined colemanite dosage. To simulate plant conditions, reference pellets and pellets with optimized CC dosage were fired in a plant furnace.
Similar content being viewed by others
References
Guo H, Jiang X, Shen F, Zheng H, Gao Q, Zhang X (2019) Influence of SiO2 on the Compressive Strength and Reduction-Melting of Pellets. Metals 9:852. https://doi.org/10.3390/met9080852
Goswami MC (2007) Chapter-3 Physical and Physico-Chemical Characterization of Iron Ore and Agglomerates http://eprints.nmlindia.org/5902
Dwarapudi S, Sekhar C, Paul I, Prasad YGS, Modi K, Chakrabort U (2016) Effect of fluxing agents on reduction degradation behaviour of hematite pellets. Ironmak Steelmak 43:180–191. https://doi.org/10.1179/1743281215Y.0000000030
Panigrahy SC, Jena BC, Rigaud M (1990) Characterization of bonding and crystalline phases in fluxed pellets using peat moss and bentonite as binders. Min Metall Sect B-Metall 21:463–474. https://doi.org/10.1007/BF02667858
Umadevi T, Kumar P, Lobo NF, Prabhu M, Mahapatra PC, Ranjan M (2011) Influence of pellet basicity (CaO/SiO2) on iron ore pellet properties and microstructure. ISIJ INT 51:14–20. https://doi.org/10.2355/isijinternational.51.14
Eisele TC, Kawatra SK (2003) A review of binders in iron ore pelletization. Min Process Extract Metall Rev 24:1–90. https://doi.org/10.1080/08827500306896
Dwarapudi S, Ghosh TK, Tathavadkar V, Denys MB, Bhattacharjee D, Venugopal R (2012) Effect of MgO in the form of magnesite on the quality and microstructure of hematite pellets. Int J Miner Process 112:55–62. https://doi.org/10.1016/j.minpro.2012.06.006
Sivrikaya O, Arol AI (2014) Alternative binders to bentonite for iron ore pelletizing: PART I: Effects on physical and mechanical properties. HOLOS 3:94–103. https://doi.org/10.15628/holos.2014.1758
Sivrikaya O, Arol AI (2011) Pelletization of magnetite ore with colemanite added organic binders. Int J Powder Metall 210:23–28. https://doi.org/10.1016/j.powtec.2011.02.007
Sivrikaya O, Arol AI (2008) Use of colemanite as an additive in iron ore pelletizing. In: 11th International Mineral Processing Symposium, pp 1121-1127. https://www.researchgate.net/profile/Osman_Sivrikaya/publication/260117746_Use_of_colemanite_as_an_additive_in_iron_ore_pelletizing/links/5c0f6c6fa6fdcc494feb3c3f/Use-of-colemanite-as-an-additive-in-iron-ore-pelletizing.pdf
Sivrikaya O, Arol AI (2010) Use of boron compounds as binders in iron ore pelletization. Open Min Process J 3:25–35. https://doi.org/10.2174/1874841401003010025
Sivrikaya O, Arol AI (2012) The bonding/strengthening mechanism of colemanite added organic binders in iron ore pelletization. Int J Miner Process 110:90–100. https://doi.org/10.1016/j.minpro.2012.04.010
Akberdin AA, Kim AS (2008) Production and blast-furnace smelting of boron-alloyed iron-ore pellets. Steel Translation 38:625–629. https://doi.org/10.3103/S096709120808010X
Timuçin M, Geveci A, Sevinç N, Topkaya Y and Eriç H (1986) The use of colemanite in steel production, Middle East Technical University Project No:84-04-07-00-13, pp 100-111
Köroglu MN (1980) Use of calcined colemanite and bentonite as binders in the pelletizing of Hasan Çelebi iron ore, M.S. thesis, Middle East Technical University, Ankara, Turkey
Sivrikaya O, Arol AI, Eisele T, Kawatra S (2013) The effect of calcined colemanite addition on the mechanical strength of magnetite pellets produced with organic binders. Min Process Extract Metall Rev 34:210–222. https://doi.org/10.1080/08827508.2012.657021
Eisele TC, Kawatra SK (2003) A review of binders in iron ore pelletization. Min Process Extract Metall Rev 24:1–90. https://doi.org/10.1080/08827500306896
Dwarapudi S, Banerjee PK, Chaudhary P, Sinha S, Chakraborty U, Sekhar C, Venugopal R (2014) Effect of fluxing agents on the swelling behaviour of hematite pellets. Int J Miner Process 126:76–89. https://doi.org/10.1016/j.minpro.2013.11.012
De Moraes SL, José De Lima JSB, Ribeiro TR (2017) Iron Ore Agglomeration Technologies. Intechopen, London. https://doi.org/10.5772/intechopen.73164
Satyananda P, Kumar A, Rayasam V (2017) The effect of particle size on green pellet properties of iron ore fines. J Min Metall A: Mining 53:31–41 https://www.researchgate.net/publication/322429894_The_effect_of_particle_size_on_green_pellet_properties_of_iron_ore_fines/fulltext/5a592b6145851545026fd52a/The-effect-of-particle-size-on-green-pellet-properties-of-iron-ore-fines.pdf
Kawatra SK, Ripke SJ (2002) Effects of bentonite fiber formation in iron ore pelletization. Int J Miner Process 65:141–149. https://doi.org/10.1016/S0301-7516(01)00062-X
Dwarapudi S, Ghosh TK, Shankar A, Tathavadkar V, Bhattacharjee D, Venugopal R (2010) Effect of pyroxenite flux on the quality and microstructure of hematite pellets. Int J Miner Process 96:45–53. https://doi.org/10.1016/j.minpro.2010.06.002
Ryösä E (2008) Mineral reactions and slag formation during reduction of olivine blast furnace pellets, Doctoral dissertation, Acta Universitatis Upsaliensis
Liu H, Xie B, Qin YL (2017) Effect of bentonite on the pelleting properties of iron concentrate. J Chem. https://doi.org/10.1155/2017/7639326
Goetzman HE, Bleifuss RL, Engesser J (1988) Investigation of carboxymethyl cellulose binders for taconite pelletizing. In: SME Annual Meeting. Phoenix, AZ, USA, pp 88–111 https://www.onemine.org/document/abstract.cfm?docid=172094&title=An-Investigation-Of-Carboxymethyl-Cellulose-Binders-For-Taconite-Pelletizing
Chizhikova VM, Vainshtein RM, Zorin SN, Zainetdinov TI, Zinyagin GA, Shevchenko AA (2003) Production of iron-ore pellets with an organic binder. Metallurgist 47:141–146. https://doi.org/10.1023/A:1024955013924
Kawigraha A, Soedarsono JW, Harjanto S (2013) Thermogravimetric Analysis of The Reduction of Iron Ore with Hydroxyl Content. Adv Mater Res 774:682–686. https://doi.org/10.4028/www.scientific.net/AMR.774-776.682
Suprapto S, Fauziah TR, Sangi MS, Oetami TP, Qoniah I, Prasetyoko D (2016) Calcium oxide from limestone as solid base catalyst in transesterification of Reutealis trisperma oil. Chem 16:208–213. https://doi.org/10.22146/ijc.21165
Forster J, Maham Y, Bobicki ER (2018) Microwave heating of magnesium silicate minerals. Powder Technol 339:1–7. https://doi.org/10.1016/j.powtec.2018.07.069
Waclawska I, Stoch L, Paulik J, Paulik F (1988) Thermal decomposition of colemanite. Thermochemical Acta 126:307–318. https://doi.org/10.1016/0040-6031(88)87276-9
Hayati-Ashtiani M, Azimi H (2016) Characterization of different types of bentonites and their applications as adsorbents of Co (II) and Ni (II). Desalination Water Treatment 57:17384–17399. https://doi.org/10.1080/19443994.2015.1084592
Dwivedi KK, Chatterjee PK, Karmakar MK, Pramanick AK (2019) Pyrolysis characteristics and kinetics of Indian low rank coal using thermogravimetric analysis. Int J Coal Sci Technol 6:102–112. https://doi.org/10.1007/s40789-019-0236-7
Kotta AB, Karak SK, Kumar M (2017) Characterization of iron ore pellets with dextrin added organic binders under different time and temperature conditions. IOP Conference Series: Mater Sci Eng 178:1–7 https://iopscience.iop.org/article/10.1088/1757-899X/178/1/012003
Pereira PM, Bagatini MC (2018) Influence of carbon content on mechanical properties of iron ore pellets. Tecnol Metal Mater Miner 15:481–487. https://doi.org/10.4322/2176-1523.20181524
Ingemarsson L, Halvarsson M (2011) SEM/EDX analysis of boron. High Temperature Corrosion Centre-Chalmer University of Technology. http://fy.chalmers.se/~f10mh/Halvarsson/EM_intro_course_files/SEM_EDX%20Boron.pdf
Rusen A (2018) Investigation of structural behaviour of colemanite depending on temperature. Revista Romana de Materiale 48:245–250 http://solacolu.chim.upb.ro/p245-250.pdf
Meyer M, Lagoeiro LE, Graça LM, Silva CJ (2016) Phase and microstructural characterization of iron ore pellet and their relation with cold crushing strength test. Min Process Extract Metall Rev 37:295–304. https://doi.org/10.1080/08827508.2016.1200574
Dwarapudi S, Sekhar C, Paul I, Modi K, Pal AJ, Chakrabort U, Das BK (2017) Effect of fluxing agents on quality and microstructure of hematite pellets. Int J Metallurg Eng 6:18–30. https://doi.org/10.5923/j.ijmee.20170601.03
Umadevi T, Kumar A, Karthik P, Srinidhi R, Manjini S (2018) Characterisation studies on swelling behaviour of iron ore pellets. Ironmaking & Steelmaking 45:157–165. https://doi.org/10.1080/03019233.2016.1250043
Acknowledgements
The authors are thankful to Dr Sanjay Chandra (Chief, R&D) for his encouragement, support and permission to publish this paper. Thanks are also due to Mr Uttam Singh (VP, Iron Making), Mr Indrajit Paul (Chief, Pellet Plant), Mr Brati Shankar Bandyopadhya (Head Operations, Pellet plant), Abhijeet Moon (Principal Researcher, R&D), Sista Kameshwara Srikar (Principal Researcher, R&D) Tanay Roy (Sr. Manager, Operations, Pellet Plant) and Dhiraj Kadhe (Principal Researcher, R&D) for their valuable input.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of Interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Shaik, M.B., Sekhar, C., Dwarapudi, S. et al. Characterization of Colemanite and Its Effect on Cold Compressive Strength and Swelling Index of Iron Ore Pellets. Mining, Metallurgy & Exploration 38, 217–231 (2021). https://doi.org/10.1007/s42461-020-00331-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s42461-020-00331-5