Author:
Levandoski William Mateus Kubiaki,Ferrazzo Suéllen Tonatto,Bruschi Giovani Jordi,Consoli Nilo Cesar,Korf Eduardo Pavan
Abstract
AbstractThis study evaluated the stabilization of iron ore tailings (IOTs) with an alkali-activated binder (AAB) produced from sugar cane bagasse ash, hydrated eggshell lime, and sodium hydroxide solution. Unconfined compressive strength, split tensile strength, initial shear stiffness, mineralogy, chemical composition, and microstructure of IOTs-AAB were evaluated. Strength values up to 6.59 MPa were achieved after 28 days-curing at 40 °C. Reducing porosity and increasing the binder content improved the overall mechanical behavior. N-A-S-H like gels were identified in IOTs-AAB mixtures. Finally, longer curing times led to more compact structures.
Funder
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Conselho Nacional de Desenvolvimento Científico e Tecnológico
CNPq
Publisher
Springer Science and Business Media LLC
Reference76 articles.
1. De Jesus, C. A. G. & Joaquina, L. G. Sumário Brasileiro mineral 2020: Ferro. Agência Nac. Mineração 1, 1–3 (2020).
2. Yang, L. et al. Systematic review of mixing technology for recycling waste tailings as cemented paste backfill in mines in China. Int. J. Miner. Metall. Mater. 26, 1206–1216 (2023).
3. Yang, L., Li, J., Jiao, H., Wu, A. & Yin, S. Research on the homogenization evaluation of cemented paste backfill in the preparation process based on image texture features. Minerals 12, 1622 (2022).
4. Freitas, C. M. & Da Silva, M. A. Work accidents which become disasters: Mine tailing dam failures in Brazil. Rev. Bras. Med. do Trab. 17, 21–29 (2019).
5. do Carmo, F. F. et al. Fundão tailings dam failures: The environment tragedy of the largest technological disaster of Brazilian mining in global context. Perspect. Ecol. Conserv. 15, 145–151 (2017).
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献