an official journal of: published by:
an official journal of: published by:
Editor in Chief: RAFFAELLO COSSU

APPLICATION OF A GAS-SOLID FLUIDISED BED SEPARATOR FOR ALUMINIUM-COPPER SCRAP RECYCLING

  • József Faitli - Institute of Raw Material Preparation and Environmental Processing, University of Miskolc, Hungary
  • Ádám Rácz - Institute of Raw Material Preparation and Environmental Processing, University of Miskolc, Hungary
  • Márton Vitányi - Inter-metal Ltd., Hungary
  • Sándor Nagy - Institute of Raw Material Preparation and Environmental Processing, University of Miskolc, Hungary

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Copyright: © 2023 CISA Publisher


Abstract

The EUbs circular economy concept necessitates the recycling of material streams used once or multiple times into the productionb consumption cycle again and again. The commonly known problem b that the number of recycling cycles of plastics is limited drives the economy towards metal usage again, because metal recycling cycles are limitless. Therefore, the efficient and economic separation of mixed aluminium and copper scraps in the 30b100 mm particle size range is an important issue for our society. In this study fundamental and applied research was carried out for the application of a gas-solid fluidised bed separator for aluminium-copper scrap recycling. A laboratory scale aero-suspension dense media separator was developed. Fundamental fluidisation experiments were carried out with this device and a powder rheometer. Afterwards pilot-scale and later industrial-scale separators were designed and built. The results indicate that the well-known Ergun fluidisation model can be the basis of a new process engineering design method for sizing dry fluidised bed separators.

Keywords


Editorial History

  • Received: 20 Mar 2023
  • Revised: 16 Jun 2023
  • Accepted: 19 Jun 2023
  • Available online: 21 Jul 2023

References

Anam, A. C., & Ikhwan, N. (2020). Experimental study of particle separation using fluidised bed method. THERMOFLUID X: 10th International Conference on Thermofluids 2019.
DOI 10.1063/5.0020175

Anjaneyulu, P., & Khakhar, D. (1995). Rheology of a gas-fluidized bed. Powder Technology, 83(1), 29–34.
DOI 10.1016/0032-5910(94)02922-b

Basu, P. (2006) Combustion and gasification in fluidized beds. CRC Press

Beeckmans, J. M., & Minh, T. (1977). Separation of mixed granular solids using the fluidized counter-current cascade principle. The Canadian Journal of Chemical Engineering, 55(5), 493–496.
DOI 10.1002/cjce.5450550501

Dévay, A. (2013). Fundaments of pharmaceutical technologies. Pécs University of Sciences. (in Hungarian)

Drzymala J. (2007). Mineral Processing, Foundations of theory and practice of minerallurgy. Wroclaw University of Technology

Ergun, S. (1952). Fluid flow through packed columns. Chemical Engineering Progress 48, 9-94

Everett, J. W., & Peirce, J. (1990). The development of pulsed flow air classification theory and design for municipal solid waste processing. Resources, Conservation and Recycling, 4(3), 185–202.
DOI 10.1016/0921-3449(90)90001-k

Fan, X., & Zhou, C., (2021) Estimation of Bed Expansion and Separation Density of Gas–Solid Separation Fluidized Beds Using a Micron-Sized-Particle-Dense Medium. Separations 8(12), Article 242;
DOI 10.3390/separations8120242

Ghosh, T. (2013). Modeling of an air-based density separator. PhD. Thesis. University of Kentucky. (http://uknowledge.uky.edu/mng_etds/7)

Gibilaro, L. G. (2001). Fluidization dynamics. Butterworth-Heinemann

He, J. Tan, M. Zhu, R. & Luo, Z. (2016) Dry beneficiation and cleaning of Chinese high-ash coarse coal utilizing a dense-medium gas-solid fluidized bed separator. Physicochemical Problems of Mineral Processing, 52(2) 662–675.
DOI 10.5277/ppmp160212

Hou, W., Man Li, R.Y., & Sittihai, T., (2022) Management Optimization of Electricity System with Sustainability Enhancement. Sustainability 14, Article 6650.
DOI 10.3390/su14116650

Krüger, B., Mrotzek, A., & Wirtz, S. (2014). Separation of harmful impurities from refuse derived fuels (RDF) by a fluidized bed. Waste Management, 34(2), 390–401.
DOI 10.1016/j.wasman.2013.10.021

Oshitani, J., Kajiwara, T., Kiyoshima, K., & Tanaka, Z. (2003). Separation of Automobile Shredder Residue by Gravity Separation Using a Gas-Solid Fluidized Bed. KONA Powder and Particle Journal, 21(0), 185–194.
DOI 10.14356/kona.2003021

Pillay, K., Mainza, A.N., Chetty, D., & Becker, M. (2022). Mineralogical Factors Affecting the Dense Medium Separation of Nickel Sulfide Ores. Minerals, 12(10), 1311;
DOI 10.3390/min12101311

Li, Q., Shi, S., & Zhang, Y (2017) Application and Development Fluidised-bed Separator. Multipurpose Utilization of Mineral Resources, 3, pp: 29-31, 37.
DOI 10.3969/j.issn.1000-6532.2017.03.004

Sahu, A. K., Biswal, S. K., & Parida, A. (2009). Development of Air Dense Medium Fluidized Bed Technology For Dry Beneficiation of Coal – A Review. International Journal of Coal Preparation and Utilization, 29(4), 216–241.
DOI 10.1080/19392690903113847

Sekito, T., Matsuto, T., & Tanaka, N. (2006). Application of a gas–solid fluidized bed separator for shredded municipal bulky solid waste separation. Waste Management, 26(12), 1422–1429.
DOI 10.1016/j.wasman.2005.10.015

Trung Thanh, B., & Anh Duc, L. (2020). Determination on Fluidization Velocity Types of the Continuous Refined Salt Fluidized Bed Drying. In I. Pala-Rosas (Ed.), Current drying processes. Intech.
DOI 10.5772/intechopen.92077

Yoshida, M., Nakatsukasa, S., Nanba, M., Gotoh, K., Zushi, T., Kubo, Y., & Oshitani, J. (2010). Decrease of Cl contents in waste plastics using a gas–solid fluidized bed separator. Advanced Powder Technology, 21(1), 69–74.
DOI 10.1016/j.apt.2009.11.002

Zhao, Y., & Wei, L. (2000). Rheology of gas–solid fluidized bed. Fuel Processing Technology, 68(2), 153–160.
DOI 10.1016/s0378-3820(00)00122-3

Zhou, C. Dong, L. Zhao, Y., & Fan, X. (2019). Studies on Bed Density in a Gas-Vibro Fluidized Bed for Coal Cleaning. ACS Omega, 4(7),12817–12826.
DOI 10.1021/acsomega.9b01892

Zhumadillayeva, A., Orazbayev, M., Santeyeva, S., Dyussekeyev, K., Yi Man Li, R., Crabbe, J. C. (2020) Models for Oil Refinery Waste Management Using Determined and Fuzzy Conditions. Information, 11(6), 299;
DOI 10.3390/info11060299