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In this work, twenty-one core samples of tailings wastes were collected from Yeshan iron tailings pond in Jiangsu Province, China. The mineralogical-chemical properties of Yeshan iron ore tailings (IOTs) were investigated to explore potential utilization. Mineralogical investigations and mineral liberation analysis indicated that the iron tailings have complex texture and incomplete mineral liberation, suggesting further grinding can improve higher recovery. Yeshan IOTs accumulated much higher MgO originating from dolomite, therefore, it could be infeasible to utilize a large quantity of Yeshan IOTs as alternative raw meals for cement clinker or replace aggregates in concrete. 2D vertical distribution profiles created with the ordinary kriging method presented heterogeneous distributions of major elements, and the variation trends were inconsistent. The results obtained in this work provide insight for exploiting and reducing Yeshan IOTs.
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http://dx.doi.org/10.1021/acsomega.3c07893 | DOI Listing |
Environ Res
September 2025
Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan, Hubei 430070, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China. Electronic address: yubiao
In order to promote the development and application of low-carbon cement varieties and the recycling of industrial solid waste, this study used iron tailings and fluorogypsum to prepare iron-rich belite-sulfoaluminate cement (I-BCSA). The suitable conditions for the preparation of I-BCSA in this system were with an excessive addition of 6 wt% of SO in the raw meal, at a calcination temperature of 1250 °C for 1.5 h, and an added-gypsum content of 15 wt%.
View Article and Find Full Text PDFJ Hazard Mater
September 2025
Laboratório de Estudos Aplicados em Fisiologia Vegetal, Instituto Federal Goiano, Campus Rio Verde Rio Verde, GO 75.901-970, Brazil.
The study investigates the long-term effects of the 2015 Fundão tailings dam collapse in Brazil, focusing on metal accumulation in soil, plants and its implications for ecosystem recovery. The research, conducted between 2021 and 2024, analyzed 3311 individuals from areas directly and indirectly affected by the dam collapse, as well as from non-affected areas, integrating geochemical, spatial, and temporal analyses. Metal concentration and cellular damage were evaluated in roots and leaves.
View Article and Find Full Text PDFChemosphere
August 2025
Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Quebec, QC, Canada.
Surface mining and bitumen extraction in Alberta's oil sands generates various tailings waste streams as by-products. Among these tailings, froth treatment tailings (FTT), originating from the froth treatment process, are particularly complex due to high levels of iron sulfide minerals (i.e.
View Article and Find Full Text PDFAppl Environ Microbiol
August 2025
Department of Applied Biology, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Liberec, Czech Republic.
Metamorphic Devonian rocks in the northern Moravian Jeseník district (Czech Republic) contain non-vein polymetallic, copper, and gold deposits. Sulfide leaching following previous mining activities has caused significant chemical and physical alterations in the local environment, resulting in biological process shifts. Here, we present a detailed microbiological survey of the Zlaté Hory mine and its adjacent features, including tailings, sediments, and treated mine water.
View Article and Find Full Text PDFEnviron Geochem Health
August 2025
Graduate Program in Agronomy, Federal University of Espírito Santo, Alegre, Espírito Santo, 29500-000, Brazil.
The collapse of the Fundão tailings dam in 2015 triggered widespread contamination across the Doce River basin, yet its long-term effects on lacustrine environments remain poorly understood. This study investigates how sediment mineralogy influences the retention and mobility of potentially toxic elements (PTEs) in shallow and deep lakes of the Lower Doce River. Between 2018 and 2019, bottom sediment samples (0-5 cm) were collected from three deep lakes (Limão, Nova, and Juparanã) and three shallow lakes (Areão, Areal, and Monsarás).
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