Properties of flash roasted products from low-grade refractory iron tailings and improvement method for their magnetic separation index

• Autorzy: Wan He , Lu Xianlu , Luukkanen Saija , Qu Juanping , Zhang Chonghui , Chen Yanxin , Bu Xianzhong

Identyfikatory

DOI

10.37190/ppmp/156725

• Języki publikacji: EN

Abstrakty

EN

The properties of flash-roasted products from low-grade refractory iron tailings (IGRIT) and the improved method for their magnetic separation index were investigated by the MLA, XRD, iron phase analysis, and magnetic separation test. The results show the siderite and hematite in the IGRIT have been converted to magnetic iron after the flash roasting treatment with a time of 3-5 s; magnetic iron in roasted products has a monomeric dissociation of 37.20%, and a 75−100% exposed area of contiguous bodies as rich intergrowth was 29.83%, and that a 32.97 poor intergrowth; moreover, magnetic iron is mainly associated with muscovite and quartz. It is also found that the regrindingmagnetic separation (1500 Oe) treatment of the middling was beneficial to obtain more qualified iron concentrate products. Therefore, roasted products magnetic separation process in the absence/ presence of the middling regrinding-magnetic separation treatment obtains an iron concentrate with 60.10%/ 60.12% iron grade and 72.04%/81.13% iron recovery. The iron concentrate from the magnetic separation process with middling regrinding-magnetic separation can have a 9% higher recovery than the process without middling regrinding-magnetic separation. The work is significant for helping to improve the utilization of IGRIT.

Słowa kluczowe

EN

roasted products; low-grade refractory iron tailings; magnetic separation; MLA

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 6
• Strony: art. no. 156725
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Wan He

• School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
• Oulu Mining School, University of Oulu, Oulu, FI-90014, Finland

autor

Lu Xianlu

• School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

autor

Luukkanen Saija

• Oulu Mining School, University of Oulu, Oulu, FI-90014, Finland

autor

Qu Juanping

• Oulu Mining School, University of Oulu, Oulu, FI-90014, Finland

autor

Zhang Chonghui

• School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

autor

Chen Yanxin

• School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

autor

Bu Xianzhong

• School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

Bibliografia

• BOEHM, A., BOEHM, M., KOGELBAUER, A., 2014. Neutrons for mineral processing–thermo diffractometry to investigate mineral selective magnetizing flash roasting. Chemie Ingenieur Technik, 86(6), 883-890.
• DAS, B., RATH, S. S., 2020. Existing and new processes for beneficiation of Indian iron ores. Transactions of the Indian Institute of Metals, 73(3), 505-514.
• DAS, S. K., PRASAD, R., SINGH, R. P., 2018. Characterisation-Assisted Reduction Roasting of BHJ, West Singhbhum, Jharkhand, India. Transactions of the Indian Institute of Metals, 71(6), 1357-1362.
• GARCÍA, A. C., LATIFI, M., CHAOUKI, J., 2020. Kinetics of calcination of natural carbonate minerals. Minerals Engineering, 150, 106279.
• GUO, X., REN, W., ZHANG, M., DAI, S., ZHAO, T., ZHU, J., 2020. Effects of grinding fineness on magnetism and agglomeration of magnetite. Journal of Central South University: (Science and Technology), 2020, 51(9): 2373-2378. (in Chinese)
• HUANG, J., LIU, J., ZHANG, H., GUO, Y., 2020. Sustainable risk analysis of China's overseas investment in iron ore. Resources Policy, 68, 101771.
• MISHRA, D.P.; SWAIN, S.K., 2020. Global trends in reserves, production and utilization of iron ore and its sustainability with special emphasis to India. J. Mines Met. Fuels, 68, 11–18.
• PINTO, P. S., MILAGRE, L. E., MOREIRA, L., ROCHA JUNIOR, H. P., SALVIANO, A. B., ARDISSON, J. D., LAGO, R. M., 2022. Iron Recovery from Iron Ore Tailings by Direct Hydrogen Reduction at Low Temperature and Magnetic Separation. Journal of the Brazilian Chemical Society, 33, 969-977.
• ROY, S.K., NAYAK, D. RATH, S.S., 2020. A review on the enrichment of iron values of low-grade Iron ore resources using reduction roasting-magnetic separation. Powder Technol. 367, 796–808. 11 Physicochem. Probl. Miner. Process., 58(6), 2022, 156725
• SANDMANN, D., 2013. Use of mineral liberation analysis (MLA) in the characterization of lithium-bearing micas. J. Miner. Mater. Character. Eng. 1, 285.
• SCHULZ, B., MERKER, G., GUTZMER, J., 2019. Automated SEM mineral liberation analysis (MLA) with generically labelled EDX spectra in the mineral processing of rare earth element ores. Minerals, 9, 527.
• SUN, Y., ZHANG, X., HAN, Y., LI, Y., 2020. A new approach for recovering iron from iron ore tailings using suspension magnetization roasting: A pilot-scale study. Powder Technol. 361, 571–580.
• SUN, Y., ZHU, X., HAN, Y., LI, Y., 2019. Green magnetization roasting technology for refractory iron ore using siderite as a reductant. J. Clean. Prod. 206, 40–50.
• TANG, Z. D., GAO, P., HAN, Y. X., GUO, W., 2019. Fluidized bed roasting technology in iron ores dressing in China: A review on equipment development and application prospect. Journal of Mining and Metallurgy B: Metallurgy, 55(3), 295-303.
• WAN, H., YI, P., LUUKKANEN, S., QU, J., ZHANG, C., YANG, S., BU, X., 2022. Recovering Iron Concentrate from Low-Grade Siderite Tailings Based on the Process Mineralogy Characteristics. Minerals, 12(6), 676.
• WANG, S., GUO, K., QI, S., LU, L., 2018. Effect of frictional grinding on ore characteristics and selectivity of magnetic separation. Mine. Eng., 122: 251-257.
• XU, F., DONG, Y. X., 2013. China’s global strategy of mineral resources under the background of the financial crisis. Applied Mechanics and Materials, 295, 2696-2700.
• YU, J. W., HAN, Y. X., LI, Y. J., GAO, P., 2016. Effect of magnetic pulse pretreatment on grindability of a magnetite ore and its implication on magnetic separation. Journal of Central South University, 23(12), 3108-3114.
• YU, J., HAN, Y., LI, Y., GAO, P., 2020. Recent advances in magnetization roasting of refractory iron ores: A technological review in the past decade. Miner. Process. Extr. Metall. Rev. 41, 349–359.
• YU, J., HAN, Y., LI, Y., GAO, P., 2017. Beneficiation of an iron ore fines by magnetization roasting and magnetic separation. International Journal of Mineral Processing, 168, 102-108.
• YUAN, S., DING, H., WANG, R., ZHANG, Q., LI, Y., GAO, P., 2022. The mechanism of suspension reduction on Fe enrichment with low-grade carbonate-containing iron ore. Advanced Powder Technology, 33(7), 103643.
• ZHENG, M., WU, P., YOU, B., 2022. Economic security evaluation and early warning of iron ore resources In China. Geological Bulletin of China, 41(5), 836-845.
• ZHANG, Q., SUN, Y., HAN, Y., GAO, P., LI, Y., 2021. Thermal Decomposition Kinetics of Siderite Ore Turing Magnetization Roasting. Min. Metall. Explor. 38, 1497–1508

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).