Integrated dry granulation – possibility of reducing environmental pollution and valorization of Fe-Ni slag

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Authors:


Izet Ibrahimi, orcid.org/0000-0002-8858-0462, University Isa Boletini, Mitrovice, Kosovo, email:

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Nurten Deva, orcid.org/0000-0003-4883-8024, University Isa Boletini, Mitrovice, Kosovo, email:

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Skender Muqolli, orcid.org/0000-0001-9691-0823, Laboratori ,,AHN Group, Prishtin, Kosovo


повний текст / full article



Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2021, (3): 025 - 030

https://doi.org/10.33271/nvngu/2021-3/025



Abstract:



Purpose.
The aim of our research consists in argumentation of the possibility of transformation of slag from potential pollutants into a new material used and its promotion as an alternative raw material for the production of consumable layers of asphalt concrete for highway.


Methodology.
The research on the possibility of using the slag of the electric furnace in Ferronickel Foundery is based on the practice of CISRO and Sumitomo Metals Industri in Japan, while the products of this process, in accordance with the standards EN12697-1:2006, EN12697-23, EN12697-12, EN 12697-27 dhe DD226-26/2004, have been used as aggregates for the production of asphalt concrete in the AHN Group-Kosovo.


Findings.
This paper presents the results from a study program related to minimizing the pollution impact of Fe-Ni slag landfill in Drenas, through valorization and improvement of physical-mechanical properties of slag according to the method of integrated dry granulation and using it afterwards as aggregate for the production of AC11 surf.


Originality.
Laboratory analyses were conducted in specialized laboratory and data presented are achieved through the use of devices and equipment that are necessary for experimental research, thus the obtained results are original data presented in this paper.


Practical value.
From the research data it has been proved that the conversion of Fe-Ni slag from wastes with high pollutant potentials into aggregates valuable for industry would express significant economic and environmental effects.



Keywords:
EF slag, waste, dry granulation, environmental protection, asphalt pavement

References.


1. Ibrahimi, I., M. Rizaj, M., & N.Deva, N. (2011). Feronikel Slag Effect In Improvement Characteristics of Surface Layer Asphalet Concrete. Materials Recycling, Silicon Photovoltaic Cells, Boron & Borates, (4), 335-345. http://flogen.com/FraySymposium/paper-4-67.html.

2. Wang, H., Wu, J.-J., Zhu, X., Liao, Q., & Zhao, L. (2016). Energyenvironmenteconomy evaluations of commercial scale systems for blast furnace slag treatment: Dry slag granulation vs. water quenching. Applied Energy, 171, 314-324. https://doi.org/10.1016/j.apenergy.2016.03.079.

3. Ibrahimi, I., Deva, N., Rizaj, M., OBrien, E.Z., & Kongoli, F. (2017). Impact of the ferronickel slag in improvement of the construction materials properties. Sustainable Industrial Processing Summit SIPS, 7, 205. ISBN: 978-1-987820-73-7.

4. Kara, M., Gnay, E., Kavakli, B., Tayfur, S., Eren, K., & Karadag,G. (2004). The Use of Steel Slag in Asphaltic Mixture. Key Engineering Materials, 264-268, 2493-2496. https://doi.org/10.4028/www.scientific.net/kem.264-268.2493.

5. Morfeldt, J., Nijs, W., & Silveira, S. (2015). The impact of climate targets on future steel production an analysis based on a global energy system model. Journal of Cleaner Production, 103, 469-482. https://doi.org/10.1016/j.jclepro.2014.04.045.

6. Ibrahimi, I., Deva, N., & Mehmeti, S. (2020). Optimalization of the Ferronickel Production Process through Improving Desulfurization Effectiveness. Civil Engineering Journal, 6(5), 907-918. https://doi.org/10.28991/cej-2020-03091516.

7. Jahanshahi, S., & Xie, D. (2012). Current status and future direction of CSIROs dry slag granulation process with waste heat recovery. International Congress on the Science and Technology of Steelmaking, 1-3.

8. Wang, G., Russell G., Thompson, R., & Wang, E. (2011). Hot-mix asphalt that contains nickel slag aggregate: Laboratory evaluation of use in highway construction. Transportation research record, 2208(1), 1-8. https://doi.org/10.3141/2208-01.

9. Bell, S., Davis, B., Javaid, A., & Essadiqi, E. (2006). Final Report on Refining Technologies of Steel. Technical Report. No. 2004-21 (CF). Retrieved from https://www.researchgate.net/publication/306293435.

 

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ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.

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