MADENCİLİK ENDÜSTRİSİNDE SÜRDÜRÜLEBİLİRLİK VE ATIK YÖNETİMİ: MACUN TEKNOLOJİSİ

Abstract

Bu çalışmada, hem atık hacim azaltma hem de çevresel etki azaltma için madencilik endüstrisinde başarılı bir şekilde uygulanmakta olan macun teknolojisinin temel prensipleri incelenmiştir. Geçmiş yirmi yılda, macun teknolojisi araştırmaya dayalı maden dolgu fikrinden atıkların yerüstünde depolanması yaklaşımını tümüyle değiştirme potansiyelli yaygın olarak kabul görmüş, etkin maliyetli bir dolgu sistemine ilerlemiştir. Modern madenler için macun atık uygulaması içsel (örneğin atık, çimento ve karışım suyu özellikleri) ve dışsal (örneğin yerinde karıştırma, yerleştirme ve kür koşulları) parametrelere odaklanarak laboratuvar ve arazi testleriyle deneysel olarak gösterilmiştir. Sonuçlar göstermektedir ki yenilikçi ve çevreye uyumlu bir sistem olarak macun atıklarının madencilik endüstrisinde dolgu ve depolama olarak kullanılması maden ömrü boyunca çevresel (örneğin atık baraj yıkılması, asidik su oluşumu) ve finansal kaygıları azaltarak operasyonel sürekliliği garanti edebilir. Son olarak, macun teknolojisi cevher hazırlama ve zenginleştirme tesislerinde üretilen problematik atıklarını daha iyi yönetmek için maden operatörlerine izin vermektedir.

Keywords

• Atıklar,Sürdürülebilirlik,Macun teknolojisi,Madencilik endüstrisi

SUSTAINABILITY AND TAILINGS MANAGEMENT IN THE MINING INDUSTRY: PASTE TECHNOLOGY

Abstract

In this study, the basic principles of paste technology which has been implemented successfully in the mining industry for both waste volume reduction and environmental impact reduction were investigated. In the past two decades, paste technology has progressed from a research-based mine backfill idea to a widely accepted and cost-effective fill system with the potential to totally change the approach tailings are disposed on the surface. Application of paste tailings for modern mines was shown experimentally by laboratory and field testing, focusing on intrinsic (e.g., tailings, cement and mix water properties) and extrinsic (e.g., in situ mixing, placement and curing conditions) parameters. Results indicate that use of paste tailings as backfilling and disposal in the mining industry as an innovative and environmentally sound system can guarantee operational continuity by reducing environmental (e.g., tailings dam failure, acidic water formation) and financial concerns over the mine’s life. Finally, paste technology enables mining operators to better manage their problematic tailings produced in the mineral processing plants.

Keywords

• Tailings,Sustainability,Paste technology,Mining industry

References

1. Aubertin, M., Bussière, B. and Bernier, L., "Environnement et Gestion des Résidus Miniers", Université du Québec en Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, Québec, Canada, 1-210, 2002.
2. Yilmaz, E., Kesimal, A. and Ercikdi, B., "Evaluation of acid producing sulphidic mine tailings as a paste backfill", Turkish Journal of Earth Sciences Review, 17, 11-19, 2004.
3. Schoenberger, E., "Environmentally sustainable mining: the case of tailings storage facilities", International Journal of Resources Policy, 49, 119-128, 2016.
4. Lotermoser, B., "Mine Wastes: Characterization, Treatment and Environmental Impacts", Springer, 1-400, 2010.
5. Karaoglu, K. and Yilmaz, E., "Cemented paste backfill pressure monitoring and field testing", Paste tailings Management, Springer, Cham, 195-214, 2017.
6. Yilmaz, E., Kesimal, A. and Ercikdi, B., "The factors affecting the strength and stability of paste backfill", Turkish Journal of Earth Sciences, 28, 2, 155-169, 2003.
7. Yilmaz, E. and Fall, M., "Paste Tailings Management", Springer International Publishing, 1-303, 2017.
8. Adiansyah, J., Rosano, M., Vink, S. and Keir, G., "A frame-work for a sustainable approach to tailings management: disposal strategies", Journal of Cleaner Production, 108, 1050-1062, 2015.

9. Kesimal, A., Yilmaz, E., Ercikdi, B., Alp, I., Yumlu, M. and Ozdemir, B., "Laboratory testing of cemented paste back-fill", Madencilik, 41, 4, 11-20, 2002.
10. Kesimal, A., Yilmaz, E., Ercikdi, B., Alp, I., Yumlu, M. and Ozdemir, B., "Paste backfill technology in underground mining: A case study", Turkish Journal of Earth Sciences Review, 16, 1, 45-53, 2003.
11. Yilmaz, E., Belem, T., Benzaazoua, M. and Bussière, B., "Assessment of the modified CUAPS apparatus to estimate in situ properties of cemented paste backfill", ASTM Geo-technical Testing Journal, 33, 1-12, 2010.
12. Yilmaz, E., Benzaazoua, M., Bussière, B. and Pouliot, S., "Influence of disposal configurations on hydrogeological behaviour of surface paste disposal: A field experimental study", International Journal of Minerals Engineering, 131, 12-25, 2014.
13. Bussière, B., "Hydrogeotechnical properties of tailings from mines and emerging geoenvironmental disposal approaches", Canadian Geotechnical Journal, 44, 1019-1052, 2007.
14. Boger, D., "Personal perspective on paste and thickened tailings: A decade on", Mining Technology – Transactions of the Institutions of Mining and Metallurgy: Section A, 121, 29-36, 2012.
15. Simon, D. and Grabinsky, M.W., "Apparent yield stress measurement in cemented paste backfill", International Journal of Mining, Reclamation and Environment, 27, 231-256, 2013.
16. Li, W., Hou, Y. and Han, S., "GGBFS effect on relationship between strength and elastic modulus of backfill", The Electronic Journal of Geotechnical Engineering, 21, 1897-1907, 2016.
17. Tariq, A. and Yanful, E.K., "A review of binders used in cemented tailings for underground and surface disposal practices", Journal of Environmental Management, 131, 138-149, 2013.
18. Belem, T. and Benzaazoua, M., "Design and application of underground mine pastefill technology", Geotechnical and Geological Engineering, 26, 2, 147-174, 2008.
19. Benzaazoua, M., Fall, M. and Belem, T., "A contribution to understanding the hardening process of cemented pastefill", Minerals Engineering, 17, 2, 141-152, 2004.
20. Cihangir, F., Ercikdi, B., Kesimal, A., Turan, A. and Deveci, H., 2012. "Utilisation of alkali-activated blast furnace slag in paste backfill of sulphide mill tailings: Effect of binder type and dosage", Minerals Engineering, 30, 33-43.
21. Yilmaz, E., Belem, T., Benzaazoua, M., Kesimal, A. and Ercikdi, B., "Evaluation of the strength properties of deslimed tailings paste backfill", Mineral Resources Engineering, 12, 2, 129-144, 2007.
22. Ercikdi, B., Cihangir, F., Kesimal, A., Deveci, H. and Alp, I., "Effect of natural puzzolans as mineral admixture on the performance of cemented fill of sulphide-rich tailings", Waste Management Resources, 28, 430-435, 2010.
23. Fall, M. and Benzaazoua, M., "Modeling the effect of sulphate on strength development of paste backfill and binder mix optimization", Cement and Concrete Research, 35, 301-314, 2005.
24. Koohestani, B., Belem, T., Koubaa, A. and Bussière, B, "Experimental investigation into strength development of cemented paste backfill containing nano-silica", Cement and Concrete Composites, 72, 180-189, 2016.
25. El Mkadmi, N., Aubertin, M. and Li, L., "Effect of drainage and sequential fill on behavior of paste backfill in mine stopes", Canadian Geotechnical Journal, 51, 1-15, 2014.
26. Emad, M.Z., Mitri, H. and Kelly, C., "State-of-the-art review of backfill practices for sublevel stoping system", Inter-national Journal of Mining, Reclamation and Environment, 29, 544-556, 2015.
27. Veenstra, R.L. Bawden, W., Grabinsky, M. and Thompson, B., "Matching stope scale numerical modeling results of early age cemented paste fill to in-situ instrumentation results", 64th Canadian Geotechnical Conference, Toronto, Ontario, Canada, 1-8, 2011.
28. Benzaazoua, M., Belem, T. and Yilmaz, E., "Novel lab tool for paste fill", Canadian Mining Journal, 127, 31-31, 2006.
29. Yilmaz, E., Belem, T. and Benzaazoua, M., "Specimen size effect on strength behavior of cemented paste backfills subjected to different placement conditions", Engineering Geology, 185, 52-62, 2015.
30. Fahey, M., Helinski, M. and Fourie, A., "Development of specimen curing procedures that account for the effect of stress during curing on the strength of cemented backfill", Journal of Geotechnical and Geological Engineering, 29, 709-723, 2011.
31. Daliri, F., Simms, P. and Sivathayalan, S., "Shear and dewatering behaviour of densified gold tailings in a labo-ratory simulation of multi-layer deposition", Canadian Geotechnical Journal, 53, 1246-1257, 2016.
32. Deschamps, T., Benzaazoua, M., Bussière, B., Aubertin, M. and Belem, T., "Microstructural and geochemical evolu-tion of tailings in surface storage", Minerals Engineering, 21, 341-353, 2008.
33. Martin, V., Aubertin, M. and McMullen, J., "Surface disposal of paste tailings", 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environ-mental Geotechnics, Cardiff, UK, 1471-1478, 2006.