Transfer the Sulfate Environment into a Beneficial Factor: Performance Enhancement and Mechanism of Electrolytic Manganese Residue-Based Mine Filling Materials Article Swipe

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Xihe Zhang , Xin Liu , Xin Liu , Zimeng Fu , Shuchao Zhai , Xiaoming Liu , Xiaoming Liu , Xihe Zhang , Xin Liu , Zimeng Fu , Shuchao Zhai , Xiaoming Liu ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.3390/jcs9120642

This paper presents a dual-benefit method for green and sustainable mine construction through developing filling materials using solid waste. In practical engineering applications, there are sulfate ions in mine water, which leads to performance degradation in traditional cement-based filling materials. In this paper, electrolytic manganese slag-based mine filling materials (EBFMs) were developed by utilizing electrolytic manganese residue (EMR), fly ash (FA), phosphorus slag (PS), and quicklime (QL). The effects of EMR content on the basic performance and the sulfate resistance of EBFM in a 5 wt.% Na2SO4 solution at different stages of erosion were extensively discussed. The results showed that when the content of EMR was 25 wt.%, EBFM showed the best basic performance and sulfate resistance among all groups. After sulfate erosion, the compressive strength increased and the porosity decreased, and the mass of the samples increased. The EBFM exhibited superior sulfate corrosion resistance at the lowest porosity (4.14%) and the highest mass change rate (5.82%) after 90 days of sulfate erosion. The corrosion resistance coefficient stabilized between 1.23 and 1.24 after 30 days of erosion. In a sulfate environment, sulfate ions contribute to promoting hydration reactions to form more hydration products, which make a denser structure. The Fe-AFt (ferrous ettringite) formed during hydration demonstrates superior stability, representing a key factor for better sulfate resistance. The EBFM transformed the presence of sulfate ions in mine water (a typically adverse condition) into a beneficial factor that enhanced the materials’ performance, thereby exhibiting excellent sulfate resistance.

Related Topics

Flue-Gas Desulfurization

Lime (Material)

Concepts

Sulfate Manganese Corrosion Porosity Materials science Magnesium Electrolyte Metallurgy Chemical engineering Sodium sulfate Chemistry Fly ash Degradation (telecommunications) Compressive strength Gypsum Mass transfer coefficient Inorganic chemistry Ion Sulfur Mass transfer Potassium sulfate Flue-gas desulfurization Calcination Lime Jarosite

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/jcs9120642
PDF: https://www.mdpi.com/2504-477X/9/12/642/pdf?version=1764067770
OA Status: gold
References: 56
OpenAlex ID: https://openalex.org/W7106614387

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DOI: https://doi.org/10.3390/jcs9120642

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Title: Transfer the Sulfate Environment into a Beneficial Factor: Performance Enhancement and Mechanism of Electrolytic Manganese Residue-Based Mine Filling Materials

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Type: article

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Language: en

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Publication year: 2025

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Publication date: 2025-11-25

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Authors: Xihe Zhang, Xin Liu, Xin Liu, Zimeng Fu, Shuchao Zhai, Xiaoming Liu, Xiaoming Liu, Xihe Zhang, Xin Liu, Zimeng Fu, Shuchao Zhai, Xiaoming Liu

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Landing page: https://doi.org/10.3390/jcs9120642

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Concepts: Sulfate, Manganese, Corrosion, Porosity, Materials science, Magnesium, Electrolyte, Metallurgy, Chemical engineering, Sodium sulfate, Chemistry, Fly ash, Degradation (telecommunications), Compressive strength, Gypsum, Mass transfer coefficient, Inorganic chemistry, Ion, Sulfur, Mass transfer, Potassium sulfate, Flue-gas desulfurization, Calcination, Lime, Jarosite

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