Use of stabilizing composite as a suppressant of atmospheric particulates for mining tailing piles
DOI:
https://doi.org/10.46421/enarc.v9i1.7080Keywords:
Mining Tailings, Tailings Piling, Stabilizing Composite Dust SuppressionAbstract
The dispersion of particles generated by the stacking of mining waste can impact public health, degrade material assets, cause environmental damage and compromise safety in mining operations and adjacent areas. Given the limitations of traditional dust control methods, this study evaluated a stabilizing composite produced with superfine steel mill waste, inorganic activators and hydraulic binders. A prototype was developed on a laboratory scale, using conventional techniques of stacking dewatered waste, and subjected to simulated rain and wind action. Visual analysis indicated that, at a concentration of 2%, the composite prevented the suspension of particles, demonstrating its potential as a sustainable alternative. Thus, its use enables the reinsertion of steel mill waste, reduces emissions in iron mining operations and fosters opportunities for economic, social and environmental development in impacted regions.
References
AZHAR, N. A. L.; RANI, S. I. Experimental Study of Airborne Dust Generation During Powder Free Falling. Acta Mechanica Malaysia, v. 3, n. 2, p. 37–39, 2020.
BAETA, A. Fortes Tempestades de Poeiras Tóxicas em Cidades Históricas Mineiras e o Alerta Global da ONU. Disponível em: <https://www.cedefes.org.br/fortes-tempestades-de-poeiras-toxicas-em-cidades-historicas-mineiras-e-o-alerta-global-da-onu/>. Acesso em: 23 nov. 2023
CARVALHO, J. M. F et al. Influence of particle size-designed recycled mineral admixtures on the properties of cement-based composites. Construction and Building Materials, v. 272, p. 121640–121640, 1 fev. 2021.
DINIZ, Dayse Horta et al. Blast oxygen furnace slag as chemical soil stabilizer for use in roads. Journal of materials in civil engineering, v. 29, n. 9, p. 04017118, 2017.
FERREIRA, L. Influência do cimento Portland no empilhamento do rejeito de barragem de minério de ferro. Ouro Preto: Universidade Federal de Ouro Preto, 2022 (Monografia).
FIEMG. Fonte de renda e crescimento, a indústria da mineração é a história de Minas Gerais G1 - Globo. Disponível em: https://g1.globo.com/mg/minas-gerais/especial-publicitario/fiemg-industria-com-voce/mineracao/noticia/2021/10/18/fonte-de-renda-e-crescimento-a-industria-da-mineracao-e-a-historia-de-minas-gerais.ghtml. Acesso em: 13 jan. 2025.
MATIAS, A.C.P. Influência da adição de compósito estabilizador no comportamento reológico de rejeitos de minério de ferro depositados em barragens. Ouro Preto: Universidade Federal de Ouro Preto, 2022 (Disertação de Mestrado).
NAZARENO et al., Estudo de caso - Poeira nas operações de Mina: alta eficiência no controle de particulados a través do uso de supressor natural. Observatorio de la Economía Latinoamericana, n. octubre, 8 out. 2018
SIQUEIRA, J. Vídeo: tempestade de poeira atinge cidade de Minas Gerais e irrita moradores |O TEMPO. Disponível em: <https://www.otempo.com.br/cidades/video-tempestade-de-poeira-atinge-cidade-de-minas-gerais-e-irrita-moradores-1.3028599>. Acesso em: 21 nov. 2023.
SHI, Z. et al. Effects of triisopropanol amine, sodium chloride and limestone on the compressive strength and hydration of Portland cement. Construction and Building Materials, v. 125, p. 210–218, 2016.
WANG, Shuang et al. Study on Cementitious Properties and Hydration Characteristics of Steel Slag. Polish Journal of Environmental Studies, v. 27, n. 1, 2018.
WANG, Y.; DU, C.; WANG, F. Formulation and Performance Characterization of Polymeric Dust Suppressants for Stockpiles. ACS Omega, v. 7, n. 11, p. 9891–9899, 11 mar. 2022.
