Synthesis of Ferroalloys via Mill Scale-Dross-Graphite Interaction: Implication for Industrial Wastes Upcycling

Wongsawan, P.; Srichaisiriwech, Weerayut; Kongkarat, Somyote

doi:10.3390/met12111909

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…32 Compared to plastics, less focus is given to upcycling metallic waste, especially for aluminum. Although methods for upcycling aluminum waste are emerging, 34,35 new strategies need further exploration. In this study, we introduce a novel strategy to create value-added materials by upcycling aluminum waste.…”

Section: ■ Introductionmentioning

confidence: 99%

Upcycling Discarded Aluminum Cans into Nanoporous Membranes as an Eco-Friendly and Cost-Effective Strategy for Fabricating Polymer Nanoarrays and Self-Cleaning Surfaces

Lee,

Chen,

Zheng

et al. 2023

ACS Appl. Nano Mater.

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In recent years, most of the dedication to waste recycling and upcycling has been focused on plastic polymers. There is less development in utilizing discarded iron or aluminum cans for upcycling. In this study, we aim to prepare anodic aluminum oxide membranes from the top of discarded aluminum cans (T-AAO) and from the side of discarded aluminum cans (S-AAO) and demonstrate their application values. The T-AAO and S-AAO membranes are obtained by anodically oxidizing the top and the side of discarded aluminum cans separately, and the pore sizes of both membranes can be enlarged by using 5 wt % phosphoric acid with different pore-widening times. The physical, chemical, and morphological properties of T-AAO and S-AAO membranes are analyzed by scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), thermogravimetric analysis (TGA), X-ray diffraction (XRD) (wide-angle X-ray scattering (WAXS) and grazing-incidence wide-angle X-ray (GIWAX)), X-ray fluorescence (XRF), electron backscatter diffraction (EBSD), and contact angle measurement, and the properties are also compared with those of AAO membranes made by high-purity (99.997%) aluminum sheets. The thermal annealing method is also applied to aluminum cans for fabricating more stereoscopic AAO membranes attributed to changes of primary lattice planes. One of the application values of T-AAO and S-AAO membranes is demonstrated by infiltration of polymer materials, poly(methyl methacrylate) (PMMA) and polystyrene (PS), into the nanopores of the membranes with the thermal annealing method, followed by releasing the polymer nanoarrays from the T-AAO and S-AAO membranes with NaOH solutions. Moreover, functional self-cleaning surfaces of T-AAO and S-AAO membranes are produced by grafting hydrophobic octadecyltrimethoxysilane (OTMS) and 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES) molecules. This work not only provides a feasible approach to recycle and upcycle aluminum waste but also gives a promising strategy for fabricating widely applicable nanomaterials in eco-friendly and low-cost ways.

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Section: ■ Introductionmentioning

confidence: 99%

Upcycling Discarded Aluminum Cans into Nanoporous Membranes as an Eco-Friendly and Cost-Effective Strategy for Fabricating Polymer Nanoarrays and Self-Cleaning Surfaces

Lee,

Chen,

Zheng

et al. 2023

ACS Appl. Nano Mater.

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Optimizing Synthesis Parameters for Ferroalloy Production from Mill Scale and Aluminum Dross: Advancing Circular Economy Practices

Wongsawan,

Srichaisiriwech,

Kongkarat

2024

J. Sustain. Metall.

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Synthesis of Magnesia–Hercynite-Based Refractories from Mill Scale and Secondary Aluminum Dross: Implication for Recycling Metallurgical Wastes

Wongsawan,

Boonlom,

Vantar

et al. 2024

Ceramics

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This study investigates the synthesis of magnesia–hercynite-based refractories using blends of magnesia powder, aluminum dross (AD), mill scale (MS), and graphite, focusing on the effects of carbon concentration and heating temperature. The results demonstrate successful synthesis at 1550 °C and 1650 °C, with high magnesia content (C80 and D80) leading to the formation of distinct phases, including MgO, FeAl2O4, MgFeAlO4, CaMg(SiO4), and Ca3Mg(SiO4)2, which influence the ceramic’s microstructure and mechanical properties. Increased magnesia content reduces porosity and enhances crushing strength, while heating to 1650 °C significantly improves densification and nearly doubles cold crushing strength, from 43.77–58.97 MPa at 1550 °C to 76.79–95.67 MPa at 1650 °C. These findings suggest that the synthesized refractories exhibit properties comparable to commercial magnesia–hercynite bricks, with potential for the further development for industrial rotary kiln applications.

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Synthesis of Ferroalloys via Mill Scale-Dross-Graphite Interaction: Implication for Industrial Wastes Upcycling

Cited by 5 publications

References 32 publications

Upcycling Discarded Aluminum Cans into Nanoporous Membranes as an Eco-Friendly and Cost-Effective Strategy for Fabricating Polymer Nanoarrays and Self-Cleaning Surfaces

Upcycling Discarded Aluminum Cans into Nanoporous Membranes as an Eco-Friendly and Cost-Effective Strategy for Fabricating Polymer Nanoarrays and Self-Cleaning Surfaces

Optimizing Synthesis Parameters for Ferroalloy Production from Mill Scale and Aluminum Dross: Advancing Circular Economy Practices

Synthesis of Magnesia–Hercynite-Based Refractories from Mill Scale and Secondary Aluminum Dross: Implication for Recycling Metallurgical Wastes

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