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Comparative Evaluation of Natural and Synthetic Flocculants on Selective Metal Recovery from Low-Grade Iron Ore Slimes

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Abstract

Iron ore washing plants generate slimes in significant volumes, which need to be treated for meeting the raw material demand as well as environmental mitigation. Selective flocculation, an emerging fines beneficiation route, has been chosen for the upgradation of Barsua iron ore slimes. Characterization studies revealed that the sample consists of 52.6% Fe, 3.8% SiO2, 7.4% Al2O3 and 6.7% LOI with hematite and goethite as the major iron-bearing minerals, intricately associated with quartz and kaolinite. Twin objectives of this study are: first to evaluate the selectivity of the polymer reagents for the desired mineral from the ore assemblage. Flocculation efficiency of starch and polyacrylamide (PAM) has been investigated. PAM has been found to be a better flocculant than starch for iron oxide minerals owing to the presence of chelating group in PAM structure, which is primarily responsible for advanced selective adsorption and formation of stable metal complexes. Second objective is adoption of factorial experimental design to assess the effects of process variables such as pH, pulp density and flocculant dosage on the selective flocculation of slimes. Process performance has been optimized to identify main and interactional effects using ANOVA statistical models. Successful upgradation has been envisaged with a Fe grade of 65.90% and recovery of 91.04% at optimized conditions of pH: 9, pulp density: 20% and flocculant dosage: 45 ppm, with a separation efficiency of 69.59%.

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References

  1. Ore I, Indian Minerals Yearbook 2016 28 Iron Ore, 2016 (2018).

  2. Jain V, Rai B, Waghmare U V, and Tammishetti V P, Trans Indian Inst Met 66 (2013) 447. https://doi.org/10.1007/s12666-013-0287-1.

    Article  CAS  Google Scholar 

  3. Rocha L, Canado R Z L, and Peres A E C, Miner Eng 23 (2010) 842. https://doi.org/10.1016/j.mineng.2010.03.009.

    Article  CAS  Google Scholar 

  4. Pearse M J, Miner Eng 18 (2005) 139. https://doi.org/10.1016/j.mineng.2004.09.015.

    Article  CAS  Google Scholar 

  5. Panda L, Biswal S K, Venugopal R, and Mandre N R, Trans Indian Inst Met 71 (2018) 463. https://doi.org/10.1007/s12666-017-1177-8.

    Article  CAS  Google Scholar 

  6. Banik R, Suresh N, and Mandre N R, Miner Process Extr Metall Rev 14 (1995) 169. https://doi.org/10.1080/08827509508914123.

    Article  Google Scholar 

  7. Tripathy A, Bagchi S, Biswal S K, and Meikap B C, Chem Eng Res Des 117 (2017) 520. https://doi.org/10.1016/j.cherd.2016.11.009.

    Article  CAS  Google Scholar 

  8. Das K K, and Somasundaran P, Colloids Surf A Physicochem Eng Asp 182 (2001) 25. https://doi.org/10.1016/s0927-7757(00)00735-4.

    Article  CAS  Google Scholar 

  9. Somasundaran P, Das K K, and Yu X, Curr Opin Colloid Interface Sci 1 (1996) 530. https://doi.org/10.1016/s1359-0294(96)80123-3.

    Article  CAS  Google Scholar 

  10. Weisseborn P K, Warren L J, and Dunn J G, Colloids Surf A Physicochem Eng Asp 99 (1995) 11. https://doi.org/10.1016/0927-7757(95)03111-p.

  11. Friend J P, and Kitchener J A, Chem Eng Sci 28 (1973) 1071. https://doi.org/10.1016/0009-2509(73)80010-7.

    Article  CAS  Google Scholar 

  12. Moudgil B M, Mathur S, and Thatavarthy S P, KONA Powder Part J 15 (1997) 5. https://doi.org/10.14356/kona.1997006.

    Article  CAS  Google Scholar 

  13. Hocking M B, Klimchuk K A, and Lowen S, J Macromol Sci Part C Polym Rev C39 (1999) 177. https://doi.org/10.1081/MC-100101419.

    Article  CAS  Google Scholar 

  14. Moudgil B M, and Vasudevan T V, J Colloid Interface Sci 127 (1989) 239. https://doi.org/10.1016/0021-9797(89)90024-6.

    Article  CAS  Google Scholar 

  15. Kitchener J A, Br Polym J 4 (1972) 217. https://doi.org/10.1002/pi.4980040307.

    Article  CAS  Google Scholar 

  16. Attia Y A, Sep Sci Technol 17 (1982) 485. https://doi.org/10.1080/01496398208068553.

    Article  CAS  Google Scholar 

  17. Tudu K, Pal S, and Mandre N R, Int J Miner Metall Mater 25 (2018) 498. https://doi.org/10.1007/s12613-018-1596-5.

    Article  CAS  Google Scholar 

  18. Kumar R, and Mandre N R, Trans Indian Inst Met 69 (2016) 1459. https://doi.org/10.1007/s12666-015-0667-9.

    Article  CAS  Google Scholar 

  19. Nanda D, Trans Indian Inst Met 71 (2018) 2985. https://doi.org/10.1007/s12666-018-1399-4.

    Article  CAS  Google Scholar 

  20. Karmakar G P, and Singh R P, Colloids Surf A Physicochem Eng Asp 133 (1998) 119. https://doi.org/10.1016/s0927-7757(97)00129-5.

    Article  CAS  Google Scholar 

  21. Ravishankar S A, Pradip, and Khosla N K, Int J Min Process 43 (1995) 235. https://doi.org/10.1016/0301-7516(95)00011-2.

    Article  CAS  Google Scholar 

  22. Poorni S, and Natarajan K A, Colloids Surf B Biointerfaces 114 (2014) 186. https://doi.org/10.1016/j.colsurfb.2013.09.049.

    Article  CAS  Google Scholar 

  23. Kumar S, Mandre N R, and Bhattacharya S, Trans Indian Inst Met 69 (2016) 1951. https://doi.org/10.1007/s12666-016-0853-4.

    Article  CAS  Google Scholar 

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Acknowledgements

Authors are thankful to CRF-IIT (ISM) Dhanbad, CSIR-CIMFR Dhanbad and MRC-MNIT, Jaipur, for helping with characterization analyses. Authors would also like to acknowledge the Department of Fuel and Mineral Engineering for providing the platform to perform experiments and analyses.

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Authors and Affiliations

  1. Department of Fuel and Mineral Engineering, IIT(ISM) Dhanbad, Dhanbad, Jharkhand, 826 004, India

    Ajita Kumari & Venugopal Rayasam

  2. Department of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, 144 411, India

    Pratima Gajbhiye

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  1. Ajita Kumari
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  3. Venugopal Rayasam
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Correspondence to Ajita Kumari.

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Kumari, A., Gajbhiye, P. & Rayasam, V. Comparative Evaluation of Natural and Synthetic Flocculants on Selective Metal Recovery from Low-Grade Iron Ore Slimes. Trans Indian Inst Met 72, 2567–2579 (2019). https://doi.org/10.1007/s12666-019-01726-9

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