Evaluation of mine tailings’ potential as supplementary cementitious materials based on chemical, mineralogical and physical characteristics

Simonsen, Anne Mette T.; Solismaa, Soili; Hansen, Henrik K.; Jensen, Pernille Erland

doi:10.1016/j.wasman.2019.11.037

Cited by 68 publications

(27 citation statements)

References 75 publications

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“…Chemometrics were applied on the chemical and physical parameters of mine tailings presented in [11]. A HCA arranged data into five groups (Group 1-5), with a major division between group 1-3 (A) and 4-5 (B) (Fi1).…”

Section: Resultsmentioning

confidence: 99%

Applying Chemometrics to Evaluate Mine Tailings’ Potential As Partial Cement Replacement

Simonsen

Pedersen

Jensen

2020

KEG

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This study investigates the utilization of mine tailings, the by-product originating from metal- and mineral-based ore mining, as a new cement replacement material. This paper is based on the chemical and physical characteristics of 13 mine tailing samples. In this study, Chemometrics were applied to consider all parameters simultaneously and obtain a thorough screening of potential relations in the large data set. Hierarchical Cluster Analysis (HCA) groups samples according to (dis)similar features and Principal Component Analysis (PCA) visualizes predominating variables and relations to samples. The application of HCA highlighted a clear grouping between mine tailings according to characteristics. Meanwhile, PCA identified the predominant chemical and physical characteristics in the mine tailing samples. Chemometrics therefore provided a thorough overview of mine tailings’ physical and chemical characteristics. Keywords: mine tailings, chemometrics, cement replacement

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Section: Resultsmentioning

confidence: 99%

Applying Chemometrics to Evaluate Mine Tailings’ Potential As Partial Cement Replacement

Simonsen

Pedersen

Jensen

2020

KEG

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“…The specific gravity of the mine tailings was between 2.7-4.29 [7], [8] and the particle size of mine tailings varied amongst cement sized, silt sized and sand sized particles [9]. The water absorption was reported to be up to 7.15% [10] and pH values of the tailings were in near neutral or slightly alkaline region generally ranging between 6.69-10 [11][12][13]. The composition varied highly due to the variation in source mineral, process of extraction, mineral extracted and quality of the ore [14].…”

Section: Properties Of Mine Tailingsmentioning

confidence: 99%

Recycling Mine Tailings for a Sustainable Future Built Environment

Maruthupandian

Chaliasou

Kanellopoulos

2021

Springer Proceedings in Energy

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The future sustainable built environment focuses mainly on environmental conservation and technological innovation and development. However, with infrastructure development, the consumption of raw materials such as cement, gypsum, sand, and stones increases. Therefore, use of industrial waste as raw material in construction shall be proposed as a sustainable and environment friendly alternative. Also, the higher demand for mineral commodities have led to increased mining and hence increased mining waste. The mine tailings being the wastes from rocks and minerals processing, are generally rich in Si, Ca, Al, Mg, and Fe, and also have considerable amounts of heavy metals and metalloids such as Pb, As, Co, Cu, Zn, V, and Cr. When tailings contain sulphide minerals, it may also lead to acid mine drainage. This makes the effective and efficient recycling and reuse of mine waste a major environmental concern. However, the physical, mineralogical and chemical composition of the mine tailings renders it a suitable material for use in civil engineering applications. This paper discusses the use of mine tailings of different origins for different civil engineering applications such as bricks, ceramics, fine aggregates, coarse aggregate and cementitious binders. This approach has a potential to reduce the demand on existing natural resources to face the demands of the exponentially developing infrastructure.

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“…The spent desulfurization catalyst from the copper smelting facility has the potential for further utilization, especially after bioleaching, since risk indices were low and mobile fractions of the remaining elements were scarce. The composition of all waste materials was dominated by SiO 2 , which suggests these materials could be used in construction engineering, e.g., as activators in cement materials (Simonsen et al 2020). However, the amount of Al 2 O 3 is too small to use these wastes as geopolymers (Trochez et al 2015).…”

Section: Perspectives On the Potential Use Of Raw And (Bio) Leached Cmentioning

confidence: 99%

Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications

Mikoda

Potysz

Gruszecka‐Kosowska

et al. 2020

Environ Sci Pollut Res

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The enormous amount of spent catalysts generated worldwide may pose a risk to the environment because of their high load of metals, including vanadium. The latter may be mobilized and released to the environment if managed improperly. Moreover, the catalysts could be considered as secondary resources rather than waste. This study aimed at the efficient extraction of vanadium from spent desulfurization catalyst (SDC) from a sulfuric acid production plant. The raw SDC and the post-extraction residues were characterized in terms of their chemical and phase composition. The metal mobility from the materials was examined with both single-step and multi-step extractions. The environmental risk assessment was performed using sequential extraction. The study revealed that both tested methods (citric acid leaching and bioleaching with Acidithiobacillus thiooxidans) enable the extraction of nearly 96% of V from SDC with a simultaneous reduction of metal mobility. However, the bacterial treatment was found more suitable. The leached residue was mostly (> 90%) composed of SiO2, which makes it a potential candidate for application in construction (e.g., concrete mixtures) after additional examinations. The study highlights the need to develop a metal extraction process for SDC in a way that metal-free residue could be a final product.

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Evaluation of mine tailings’ potential as supplementary cementitious materials based on chemical, mineralogical and physical characteristics

Cited by 68 publications

References 75 publications

Applying Chemometrics to Evaluate Mine Tailings’ Potential As Partial Cement Replacement

Applying Chemometrics to Evaluate Mine Tailings’ Potential As Partial Cement Replacement

Recycling Mine Tailings for a Sustainable Future Built Environment

Spent sulfuric acid plant catalyst: valuable resource of vanadium or risky residue? Process comparison for environmental implications

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