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Effect of organic binders on the activation and properties of indurated magnetite pellets

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Abstract

In the ironmaking process, the addition of an organic binder to replace a portion of bentonite has the potential to improve the performance of pellets. The interaction between original bentonite (OB) and organic binder was investigated. Results indicated that the micromorphology of organic composite bentonite (OCB) became porous and the infrared difference spectrum exhibited a curved shape. In addition, the residual burning rates of OB and organic binder were determined to be 82.72% and 2.30%, respectively. Finally, the influence of OCB on the properties of pellets was investigated. The compressive strength of OCB-added green pellets (14.7 N per pellet) was better than that of OB-added pellets (10.3 N per pellet). Moreover, the range of melting temperature of OCB-added green pellets (173°C) was narrower than that of OB-added pellets (198°C). The compressive strength of OCB-added green pellets increased from 2156 to 3156 N per pellet with the increase in roasting temperature from 1200 to 1250°C.

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References

  1. H. Q. Zhang and J. T. Fu, Oxidation behavior of artificial magnetite pellets, Int. J. Miner. Metall. Mater., 24(2017), No. 6, p. 603.

    Article  CAS  Google Scholar 

  2. J. Chen, Y. Jiao, and X. Wang, Thermodynamic studies on gas-based reduction of vanadium titano-magnetite pellets, Int. J. Miner. Metall. Mater., 26(2019), 7, p. 822.

    Article  CAS  Google Scholar 

  3. T.C. Eisele and S.K. Kawatra, A review of binders in iron ore pelletization, Miner. Process. Extr. Metall. Rev., 24(2003), No. 1, p. 1.

    Article  CAS  Google Scholar 

  4. U. Srivastava, S.K. Kawatra, and T.C. Eisele, Study of organic and inorganic binders on strength of iron oxide pellets, Metall. Mater. Trans. B, 44(2013), No. 4, p. 1000.

    Article  CAS  Google Scholar 

  5. G.J. Cheng, Z.X. Gao, H. Yang, and X.X. Xue, Effect of diboron trioxide on the crushing strength and smelting mechanism of high-chromium vanadium-titanium magnetite pellets, Int. J. Miner. Metall. Mater., 24(2017), No. 11, p. 1228.

    Article  CAS  Google Scholar 

  6. A.B. Kotta, A. Patra, M. Kumar, and S.K. Karak, Effect of molasses binder on the physical and mechanical properties of iron ore pellets, Int. J. Miner. Metall. Mater., 26(2019), No. 1, p. 41.

    Article  CAS  Google Scholar 

  7. S.K. Kawatra and S.J. Ripke, Laboratory studies for improving green ball strength in bentonite-bonded magnetite concentrate pellets, Int. J. Miner. Process., 72(2003), No. 1, p. 429.

    Article  CAS  Google Scholar 

  8. H. Liu, B. Xie, Y.L. Qin, and M.D. Alba, Effect of Bentonite on the pelleting properties of iron concentrate, J. Chem., 2017(2017), p. 1.

    Google Scholar 

  9. Y.L. Zhou and S.K. Kawatra, Humic substance-based binder in iron ore pelletization: A review, Miner. Process. Extr. Metall. Rev., 38(2017), No. 5, p. 321.

    Article  CAS  Google Scholar 

  10. I.U. Bhuiyan, J. Mouzon, B. Schröppel, A. Kaech, I. Dobryden, S.P. Forsmo, and J. Hedlund, Microstructure of bentonite in iron ore green pellets, Microsc. Microanal., 20(2014), No. 1, p. 33.

    Article  CAS  Google Scholar 

  11. R.R. Wang, J.L. Zhang, Y.R. Liu, A.Y. Zheng, Z.J. Liu, X.L. Liu, and Z.G. Li, Thermal performance and reduction kinetic analysis of cold-bonded pellets with CO and H2 mixtures, Int. J. Miner. Metall. Mater., 25(2018), No. 7, p. 752.

    Article  CAS  Google Scholar 

  12. Y.B. Zhang, Y.L. Zhou, B.B. Liu, G.H. Li, and T. Jiang, Roasting characteristics of specularite pellets with modified humic acid based (MHA) binder under different oxygen atmospheres, Powder Technol., 261(2014), p. 279.

    Article  CAS  Google Scholar 

  13. F.M. Linhares, C.C.F. Victor, L.R. Lemos, and M.C. Bagatini, Effect of three different binders and pellet feed on granulation behaviour of sintering mixtures, Ironmaking Steelmaking, 47(2020), No. 9, p. 911.

    Article  Google Scholar 

  14. Y.B. Yang, G.X. Huang, T. Jiang, Z.C. Huang, Y. Luo, and Y.L. Huang, Application of organic binder as substitutes for bentonite in pellet preparation, J. Cent. South Univ. Sci. Technol., 38(2007), No. 5, p. 850.

    CAS  Google Scholar 

  15. G.Z. Qiu, T. Jiang, Z.C. Huang, D.Q. Zhu, and X.H. Fan, Characterization of preparing cold bonded pellets for direct reduction using an organic binder, ISIJ Int., 43(2003), No. 1, p. 20.

    Article  CAS  Google Scholar 

  16. A. Ammasi and J. Pal, Replacement of bentonite in hematite ore pelletisation using a combination of sodium lignosulphonate and copper smelting slag, Ironmaking Steelmaking, 43(2016), No. 3, p. 203.

    Article  CAS  Google Scholar 

  17. O. Sivrikaya, A.I. Arol, T. Eisele, and S.K. Kawatra, The effect of calcined colemanite addition on the mechanical strength of magnetite pellets produced with organic binders, Miner. Process. Extr. Metall. Rev., 34(2013), No. 4, p. 210.

    Article  CAS  Google Scholar 

  18. S. K. Kawatra and J. A. Halt, Binding effects in hematite and magnetite concentrates, Int. J. Miner. Process., 99(2011), No. 1, p. 39.

    Article  CAS  Google Scholar 

  19. X.H. Fan, Y. Wang, M. Gan, L.S. Yuan, L.Q. Dai, and G.G. Zhao, Strength enhancement of oxide pellet with organic binder, J. Iron Steel Res., 20(2008), No. 5, p. 5.

    CAS  Google Scholar 

  20. D.Q. Zhu, V. Mendes, T. Chun, J. Pan, Q.H. Li, J. Li, and G.Z. Qiu, Direct reduction behaviors of composite binder magnetite pellets in coal-based grate-rotary kiln process, ISIJ Int., 51(2011), No. 2, p. 214.

    Article  CAS  Google Scholar 

  21. F.N. Ridha, V. Manovic, E.J. Anthony, and A. MacChi, The morphology of limestone-based pellets prepared with kaolin-based binders, Mater. Chem. Phys., 138(2013), No. 1, p. 78.

    Article  CAS  Google Scholar 

  22. Y.B. Zhang, M.M. Lu, Z.J. Su, J. Wang, Y.K. Tu, X.J. Chen, C.T. Cao, F.Q. Gu, S. Liu, and T. Jiang, Interfacial reaction between humic acid and Ca-Montmorillonite: Application in the preparation of a novel pellet binder, Appl. Clay Sci., 180(2019), No. 6, art. No. 105177.

  23. S.L. De Moraes, J.R.B. De Lima, J.B.F. Neto, C. Fredericci, and E.M. Saccoccio, Binding mechanism in green iron ore pellets with an organic binder, Miner. Process. Extr. Metall. Rev., 41(2020), No. 4, p. 247.

    Article  CAS  Google Scholar 

  24. D.Q. Zhu, S.A. Xiong, J. Pan, and X.L. Zhou, Improving pelletization of magnetite concentrate by organic complex bentonite and its industrial application, J. Cent. South Univ. Sci. Technol., 42(2011), No. 2, p. 279.

    CAS  Google Scholar 

  25. S. Kumar and S. Suman, Compressive strength of fired pellets using organic binder: response surface approach for analyzing the performance, Trans. Indian Inst. Met., 71(2018), No. 7, p. 1629.

    Article  CAS  Google Scholar 

  26. Y.L. Zhou and S.K. Kawatra, Pelletization using humic substance-based binder, Miner. Process. Extr. Metall. Rev., 38(2017), No. 2, p. 83.

    Article  Google Scholar 

  27. B.B. Ivanova, D.L. Tsalev, and M.G. Arnaudov, Validation of reducing-difference procedure for the interpretation of non-polarized infrared spectra of n-component solid mixtures, Talanta, 69(2006), No. 4, p. 822.

    Article  CAS  Google Scholar 

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 51874025), the National Key R&D Program of China (No. 2017YFB0304302-01), and the Fundamental Research Funds for the Central Universities, China (No. FRF-NP-19-004).

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Cui Wang

  2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Chen-yang Xu, Zheng-jian Liu, Yao-zu Wang & Li-ming Ma

  3. Department of Ferrous Metallurgy, RWTH Aachen University, Intzestraße 1, 52072, Aachen, Germany

    Rong-rong Wang

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  1. Cui Wang
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Correspondence to Zheng-jian Liu.

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Wang, C., Xu, Cy., Liu, Zj. et al. Effect of organic binders on the activation and properties of indurated magnetite pellets. Int J Miner Metall Mater 28, 1145–1152 (2021). https://doi.org/10.1007/s12613-020-2055-7

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  • DOI: https://doi.org/10.1007/s12613-020-2055-7

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