Abstract
In this paper, a sample from Tange-zagh iron mine was characterized by gravity and magnetic separation methods. The mineralogical studies showed that hematite and goethite are the main iron-bearing minerals with insignificant amounts of FeO. The results indicated that spiral separation yields higher separation efficiency than others. The combination of spiral and multi gravity methods showed that the grade and recovery could be obtained 58.7 and 55.6%, respectively. Scrubbing and de-sliming stages increased the recovery in the wet high intensity magnetic process. With a four-stage process of separation, the WHIMS by scrubbing and de-sliming was applied to achieve a final concentrate with grade of 62.6% Fe and recovery of 57.1% Fe.
Similar content being viewed by others
References
Filippov, L., Severov, V., and Filippova, I., An overview of the beneficiation of iron ores via reverse cationic flotation, Int. J. Miner. Proc., 2014, vol. 127, pp. 62–69.
Martínez-Luévanos, A., Rodriguez-Delgado, M., Uribe-Salas, A., Carrillo-Pedroza, F., and Osuna-Alarcón, J., Leaching kinetics of iron from low grade kaolin by oxalic acid solutions, Appl. Clay Sci., 2011, vol. 51, no. 4, pp. 473–477.
Rao, D., Kumar, T.V., Rao, S.S., Prabhakar, S., and Raju, G.B., Mineralogy and geochemistry of a low grade iron ore sample from bellary-hospet sector, India and their implications on beneficiation, J. Miner. Mater. Charact. Eng., 2009, vol. 8, no. 2, pp. 115.
Seifelnassr, A.A., Moslim, E.M., and Abouzeid, A.-Z.M. Concentration of a Sudanese lowgrade iron ore, Int. J. Miner. Proc., 2013, vol. 122, pp. 59–62.
Das B., Prakash S., Das S., Reddy P. Effective beneficiation of low grade iron ore through jigging operation, J. Miner. Mater. Charact. Eng., 2008, vol. 7, no. 1, pp. 27.
Srivastava, U. and Kawatra, S.K., Strategies for processing low-grade iron ore minerals, Miner. Proc. & Extract. Metall. Rev., 2009, vol. 30, no. 4, pp. 361–371.
Roy, S. Recovery improvement of fine iron ore particles by multi gravity separation, The Open Miner. Proc. J., 2009, vol. 2, no. 14, pp. 17–30.
Richards, R., MacHunter, D., Gates, P., and Palmer, M., Gravity separation of ultra-fine (0.1 mm) minerals using spiral separators, Miner. Eng., 2000, vol. 13, no. 1, pp. 65–77.
Arvidson B.R. Processing High-Grade Concentrates from Challenging Low-Grade Iron Ore Deposits. Transactions of the Indian Institute of Metals, 2013, vol. 66, nos. 5–6, pp. 467–474.
Bergmann, C., Govender, V., and Corfield, A., Using mineralogical characterisation and process modelling to simulate the gravity recovery of ferrochrome fines, Miner. Eng., 2016, vol. 91, pp. 2–15.
Napier-Munn, T. and Wills, B.A., Wills’ Mineral Processing Technology: An Iintroduction to the Practical Aspects of Ore Treatment and Mineral Recovery, Elsevier, 2006.
Bazin, C., Sadeghi, M., Bourassa, M., Roy, P., Lavoie, F., Cataford, D., Rochefort, C., and Gosselin, C., Size recovery curves of minerals in industrial spirals for processing iron oxide ores, Miner. Eng., 2014, vol. 65, pp. 115–123.
Srivastava, M., Pan, S., Prasad, N., and Mishra, B., Characterization and processing of iron ore fines of Kiriburu deposit of India, Int. J. Miner. Proc., 2001, vol. 61, no. 2, pp. 93–107.
Turner, J. and Hallewell, M., Process improvements for fine cassiterite recovery at Wheal Jane, Miner. Eng., 1993, vol. 6, no. 8, pp. 817–829.
Roy, S. and Das, A., Characterization and processing of low-grade iron ore slime from the Jilling area of India, Miner. Proc. & Extract. Metall. Rev., 2008, vol. 29, no. 3, pp. 213–231.
Roy, S., Das, A., and Mohanty, M., Feasibility of producing pellet grade concentrate by beneficiation of iron ore slime in India, Separat. Sci. Technol., 2007, vol. 42, no. 14, pp. 3271–3287.
Sivamohan, R. and Forssberg, E., Principles of spiral concentration, Int. J. Miner. Proc., 1985, vol. 15, no. 3, pp. 173–181.
Atasoy, Y. and Spottiswood, D., A study of particle separation in a spiral concentrator, Miner. Eng., 1995, vol. 8, no. 10, pp. 1197–1208.
Holtham, P., Particle transport in gravity concentrators and the Bagnold effect, Miner. Eng., 1992, vol. 5, no. 2, pp. 205–221.
Svoboda, J. and Fujita, T., Recent developments in magnetic methods of material separation, Miner. Eng., 2003, vol. 16, no. 9, pp. 785–792.
Song, S., Lu, S., and Lopez-Valdivieso, A., Magnetic separation of hematite and limonite fines as hydrophobic flocs from iron ores, Miner. Eng., 2002, vol. 15, no. 6, pp. 415–422.
Gaom, Y., Prereduction and Magnetic Separation of Low Grade Manganese Ore, Salt Lake City: Univ. of Utah, 2011.
Chen, L., Zeng, J., Guan, C., Zhang, H., and Yang, R., High gradient magnetic separation in centrifugal field, Miner. Eng., 2015, vol. 78, pp. 122–127.
Svoboda, J., Magnetic Methods for the Treatment of Minerals, Amsterdam: Elsevier, 1987.
Svoboda, J., A realistic description of the process of high-gradient magnetic separation, Miner. Eng., 2001, vol. 14, no. 11, pp. 1493–1503.
Umadevi, T., Singh, A.P., Abhishek, K., Suresh, B., and Sah, R., Recovery of Iron Bearing Minerals from Beneficiation Plant 2 Thickner Underflow of JSW Steel Limited, Ski. Res., 2013, vol. 1, no. 2, pp. 55–60.
Xiong, D., Liu, S., and Chen, J., New technology of pulsating high gradient magnetic separation, Int. J. Miner. Proc., 1998, vol. 54, no. 2, pp. 111–127.
Ding, L., Chen, L.Z., and Zeng, J.W., Investigation of Combination of Variable Diameter Rod Elements in Rod Matrix on High Gradient Magnetic Separation Performance, Adv. Mater. Res., 2014.
Author information
Authors and Affiliations
Corresponding author
Additional information
The article is published in the original.
About this article
Cite this article
Akbari, H., Noaparast, M., Shafaei, S.Z. et al. A Beneficiation Study on a Low Grade Iron Ore by Gravity and Magnetic Separation. Russ. J. Non-ferrous Metals 59, 353–363 (2018). https://doi.org/10.3103/S1067821218040028
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1067821218040028