Optimization of Line of Magnetite Recovery from Wet Tailings by Creating Second Medium Intensity Magnetic Field (Case Study: Processing Plant of Gol-e-Gohar Hematite)

Document Type : Original Article

Authors

1 Mining Engineering Department, University of Sistan and Baluchestan, Zahedan, Iran

2 Mining Engineering, Head of Golgohar's Hematite Factory, Sirjan, Iran

Abstract

The primary raw material of the steel industry is iron. This paper aims to optimize magnetite recovery from wet tailings by increasing the iron content in the concentrate of the line. To manage tailings, a Wet Tailing Processing (WTP) line constructed at Gol-e-Gohar Iron Ore Company to recover the magnetite. The dominant crystalline phases in these tailings were quartz, albite, talc, hematite, and calcite. The line feed is 45 microns, which is not suitable for the gravity method. Thus, separation can achieve using only the magnetic method. Because of the high iron content in the tailings, a wet magnetic separator is used. According to the results, the proposed medium-intensity separator and the associated circuit modifications increase iron recovery from 7 to 30 percent; resulting in 150 tons of annual production; preventing loss of iron through concentrator plant tailings, and increasing the Blain number by 50 to 100 units in the hematite plant. Furthermore, water consumption is significantly reduced by replacing old wet tailings of the concentrator plant with new wet tailings as the feed, which is another significant achievement of this research. Instead of fresh water, saline water with flow rate of 250 cubic meters per hour are used.

Keywords

Main Subjects

References

  1. Abbasian, A., Ravangard, A., Hajian Nia, I. and Mirzamohammadi, S., "Investigation of microstructure and mechanical properties of newly developed advanced high strength trip steel", International Journal of Engineering, Transaction C: Aspects, Vol. 35, No. 3, (2022), 567-571, doi: 10.5829/IJE.2022.35.03C.09.
  2. Ahadi Akhlaghi, I., Kahrobaee, S., Sekhavat, M., Norouzi Sahraei, H. and Akhlaghi Modiri, F., "Application of artificial neural network and multi-magnetic nde methods to determine mechanical properties of plain carbon steels subjected to tempering treatment", International Journal of Engineering, Transaction A: Basics, Vol. 34, No. 4, (2021), 919-927, doi: 10.5829/IJE.2021.34.04A.18.
  3. Gapsari, F., Hidayatia, N., Setyarini, P., Alan, M.P., Subagyo, R. and Andoko, A., "Hydroxyapatite coating on stainless steel 316l using flame spray technique", International Journal of Engineering, Transaction B: Applications, Vol. 34, No. 2, (2021), 493-499, doi: 10.5829/IJE.2021.34.02B.22.
  4. David, D., Larson, M. and Li, M., "Optimising western australia magnetite circuit design", Proceedings of the Metallurgical Plant Design and Operating Strategies, Perth, (2011).
  5. Xiong, D., Lu, L. and Holmes, R., Developments in the physical separation of iron ore: Magnetic separation, in Iron ore. 2015, Elsevier.283-307.
  6. Bulatovic, S. and Salter, R., High intensity conditioning—a new approach to improving flotation of mineral slimes, in Processing of complex ores. 1989, Elsevier.169-181.
  7. Wyslouzil, H., "The production of high grade iron ore concentrates using flotation columns", Skillings' Mining Review(USA), Vol. 86, No. 37, (1997), 4-8.
  8. Wang, F., Zhang, S., Zhao, Z., Gao, L., Tong, X. and Dai, H., "Investigation of the magnetic separation performance of a low-intensity magnetic separator embedded with auxiliary permanent magnets", Minerals Engineering, Vol. 178, (2022), 107399, doi: 10.1016/j.mineng.2022.107399.
  9. Argimbaev, K., Ligotsky, D., Mironova, K. and Loginov, E., "Investigations on material composition of iron-containing tails of enrichment of combined mining and processing in kursk magnetic anomaly of russia", International Journal of Engineering, Transaction A: Basics, Vol. 33, No. 7, (2020), 1431-1439, doi: 10.5829/IJE.2020.33.07A.31.
  10. Amin Saravari, A.S. and Shayanfar, S., "Desulfurization of iron ore concentrate using a combination of magnetic separation and reverse flotation", Journal of Chemical Technology and Metallurgy, Vol. 56, No. 5, (2021), 1002-1110.
  11. Panahi, E., Abdollahzadeh, A., Sam, A., Jahani, M., Moghaddam, M.Y. and Mehrani, A., "Desulfurization of hematitic concentrate of iron ore of the gol-e-gohar mine using reverse flotation method", Techincal Rep, (2012).
  12. Dehghani, F., Khosravi, R., Pazoki, A., Kebe, M., Jahanian, R., Siavoshi, H. and Ghosh, T., "Application of magnetic separation and reverse anionic flotation to concentrate fine particles of iron ore with high sulfur content", Physicochemical Problems of Mineral Processing, Vol. 58, (2022), doi: 10.37190/ppmp/145420.
  13. Qaredaqi, M. and Rafizadeh, A., "Application of different wet high intensity magnetic separators in gole-gohar mine".
  14. Tripathy, S.K., Singh, V. and Suresh, N., "Prediction of separation performance of dry high intensity magnetic separator for processing of para-magnetic minerals", Journal of The Institution of Engineers (India): Series D, Vol. 96, No. 2, (2015), 131-142, doi: 10.1007/s40033-015-0064-x.
  15. Stener, J.F., Carlson, J.E., Pålsson, B.I. and Sand, A., "Evaluation of the applicability of ultrasonic velocity profiling in conditions related to wet low intensity magnetic separation", Minerals Engineering, Vol. 62, (2014), 2-8, doi: 10.1016/j.mineng.2013.08.005.
  16. Stener, J.F., Carlson, J.E., Sand, A. and Pålsson, B.I., "Internal flow measurements in pilot scale wet low-intensity magnetic separation", International Journal of Mineral Processing, Vol. 155, (2016), 55-63, doi: 10.1016/j.minpro.2016.08.008.
  17. Padmanabhan, N. and Sreenivas, T., "Process parametric study for the recovery of very-fine size uranium values on super-conducting high gradient magnetic separator", Advanced Powder Technology, Vol. 22, No. 1, (2011), 131-137. https://doi.org/10.1016/j.apt.2010.09.013
  18. Wasmuth, H.-D. and Unkelbach, K.-H., "Recent developments in magnetic separation of feebly magnetic minerals", Minerals Engineering, Vol. 4, No. 7-11, (1991), 825-837.
  19. Svoboda, J., "The effect of magnetic field strenght on the efficiency of magnetic separation", Minerals Engineering, Vol. 7, No. 5-6, (1994), 747-757, https://doi.org/10.1016/0892-6875(94)90104-X
  20. Wills, B.A., "Mineral processing technology: An introduction to the practical aspects of ore treatment and mineral recovery, Elsevier, (2013).
  21. Shao, Y., Veasey, T. and Rowson, N., "Wet high intensity magnetic separation of iron minerals", Magnetic and Electrical Separation, Vol. 8, (1970), doi: 10.1155/1996/34321.
  22. Zhang, X., Han, Y., Sun, Y., Lv, Y., Li, Y. and Tang, Z., "An novel method for iron recovery from iron ore tailings with pre-concentration followed by magnetization roasting and magnetic separation", Mineral Processing and Extractive Metallurgy Review, Vol. 41, No, 2, (2020), 117-129. https://doi.org/10.1080/08827508.2019.1604522
  23. Dwari, R.K., Rao, D.S. and Reddy, P.S.R., "Magnetic separation studies for a low grade siliceous iron ore sample", International Journal of Mining Science and Technology, Vol. 23, No. 1, (2013), 1-5, https://doi.org/10.1016/j.ijmst.2013.01.001
  24. Behnamfard, A. and Khaphaje, E., "Beneficiation of a low-grade iron ore by combination of wet low-intensity magnetic separation and reverse flotation methods", Journal of Mining and Environment, Vol. 10, No. 1, (2019), 197-212, doi: 10.22044/JME.2018.7392.1595.
  25. Svoboda, J. and Fujita, T., "Recent developments in magnetic methods of material separation", Minerals Engineering, Vol. 16, No. 9, (2003), 785-792, https://doi.org/10.1016/S0892-6875(03)00212-7
  26. Makhula, M.J., "Beneficiation of fine ores using the longi wet high magnetic separator", Ph.D. Dissertation, University of the Witwatersrand, Faculty of Engineering and the Built Environment, School of Chemical and Metallurgical Engineering, (2014),
  27. Tripathy, S.K., Banerjee, P. and Suresh, N., "Separation analysis of dry high intensity induced roll magnetic separator for concentration of hematite fines", Powder Technology, Vol. 264, (2014), 527-535. https://doi.org/10.1016/j.powtec.2014.05.065
International Journal of Engineering
Volume 35, Issue 8
TRANSACTIONS B: Applications
August 2022
Pages 1608-1618

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