The wet high intensity magnetic separation of magnesite ore waste
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The wet high intensity magnetic separation of magnesite ore waste stocked in an open pit of a magnesite mine was investigated in this paper. The received sample was subjected to physical, chemical, thermal and phase characterizations. The magnesite ore waste sample contained 77.69 % MgCO3 and a considerable amount of Fe2O3 (3.14 %). The unwanted silica and iron impurities were removed and a high-grade magnesite was experimentally obtained. Results have shown that a high-grade magnesite was obtained after subjecting the non-magnetic portion of the processed sample twice at 1.8 T. It was possible to increase the magnesite content up to 91.03 % while reducing the iron content to 0.32 % by using magnetic separation. After the calcination process at 1000 oC, the sample showed mass loss on ignition of 52 % and contained 85.39 % MgO with 0.32 % Fe2O3. The final product can be used in chemical and metallurgical applications where high magnesia contents are required. The experimental results provide useful information on wet magnetic separation of magnesite wastes.
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Reference
Yuna Z, Guocai Z. A technology preparing honeycomb-like structure MgO from low grade magnesite. Int. J. Miner. Process. 2014;126: 35-40.
Yılmaz A, Kusçu M. Formation, classification, applications and quality classification of magnesite deposits. ERU. J. Inst. Sci. Technol. 2012; 28: 65-72. (in Turkish)
Bilge A, Yaman C, Sarıoğlu N. Turkey's magnesite for production of fused magnesia, properties and uses in refractory applications. In: Processing Technology, 60th Inter Colloquium on Refractories EUROGRESS, Aachen, Germany. 2017, 1-10.
Gence N. Enrichment of magnesite ore. Eng. Arch. Fac. Osmangazi University.2001; 14:2:1-10 (in Turkish).
Song S, Lu S, Lopez-Valdivieso L. Magnetic separation of hematite and limonite fines as hydrophobic flocks from iron ores. Miner. Eng.2002;15: 415-422.
Kelland DR. High gradient magnetic separation applied to mineral beneficiation. IEEE T. Magn. 1973; 9: 3, 307-310.
Uslu T, Atalay Ü, Arol AI. Effect of microwave heating on magnetic separation of pyrite. Colloids and Surfaces A. 2003; 225: 1:161-167.
Oberteuffer J. High gradient magnetic separation. IEEE Transactions on Magnetics. 1973;9: 3: 303-306.
Svoboda J, Fujita T. Recent developments in magnetic methods of material separation. Miner. Eng. 2003;16: 785-792.
Gupta CK, Krishnamurthy N. Extractive Metallurgy of Rare Earths, London: CRC Press; 2005.
Yavuz CT, Prakash A, MayoJT, Colvin V. Magnetic separations: From steel plants to bio technology. Chem.Eng. Sci. 2009;64: 2510- 2521.
Yao J, Yin W, Gong E. Depressing effect of fine hydrophilic particles on magnesite reverse flotation. Int. J. Miner. Process. 2016;149: 84-93.
Roza N, Zafar NI, Najam-ul HM. Utilization of formic acid solution in leaching reaction kinetics of natural magnesite ore. Hydrometallurgy. 2014;149: 183-188.
Jordens A, Cheng YP, Waters KE. A review of the beneficiation of rare earth element bearing minerals. Miner. Eng. 2013;41: 97-114.
Ferron CJ, Bulatovic SM, Salter RS. Beneficiation of rare earth oxide minerals. In: Inter. Conf. On Rare Earth Minerals and Minerals for Electronic Uses. Prince Songkla University, Hat Yai, Thailand, 1991;251- 269.
Falconer A. Gravity separation: old technique/new methods. Phys. Separ. Sci. Eng.2003; 12: 1:31-48.
Dobbins M, Dunn P, Sherrell I. Recent advances in magnetic separator designs and applications. In: 7th Inter. Heavy Minerals Conf. SAIMM. Johannesburg, S. Africa, 2009, 63-70.
Bentli I, Erdoğan N, Elmas N, Kaya M. Magnesite concentration technology and caustic calcined product from Turkish magnesite middling by calcination and magnetic separation. Sep Sci Technol. 2017; 52: 6; 1129-1142.