Destination of the waste generated by a steelmaking plant: a case study in Latin America

Sellitto, Miguel Alfonso; Murakami, Fábio Kazuhiro

doi:10.13128/aestim-9025

Cited by 6 publications

(3 citation statements)

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“…CE and IS are not only sources of important benefits, such as new revenues, increased life cycle of landfills and compliance to legislation, but also bring with themselves some challenges, such as high costs and mismatch between offer and demand [52]. Steel industries are still an open empirical research field to investigate environmental sustainability practices linked to economic and organizational feasibility [53,54]. If the first focus of our research is to explore the environmental strategies in the steel sector, we will use an innovative perspective, that of external stakeholders, such as customers, who have direct knowledge of market trends and changes [55,56].…”

Section: Environmental Sustainability Strategies In the Steel Sectormentioning

confidence: 99%

Structuring and Measuring Environmental Sustainability in the Steel Sector: A Single Case Study

Tolettini

Maria

2023

Sustainability

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Climate change policies are affecting the economic and structural viability of European Union (EU) industries, particularly in the energy-intensive sector, with very challenging goals of EU Agenda 2030 in terms of CO2 reductions and energy efficiency. This ecological transition can be supported by the employment of innovative technologies, enabling production process efficiency, resource optimization and supply-chain integration. Nevertheless, it is still empirically unclear how energy-intensive industries will complete their ecological transition successfully, especially in terms of achieving environmental sustainability practices within the organization and in the supply-chain without endangering their economic availability. Moreover, the assessment of environmental sustainability performance is still not a unique standard framework, causing loss of transparency and traceability towards internal and external stakeholders, such as managers, investors and business partners. With 20 qualitative interviews of customers and experts of a company leader in the steel construction sector in Italy and Germany, the Feralpi Group, this paper explores the implications of strategic environmental sustainability indicators, which can transparently assess company performance. Preliminary results underline how shared standardized indicators are fundamental for a tighter supply-chain integration, giving impulse and significance to the steel producers’ efforts for environmental sustainability excellence. Future research should further investigate the connection between environmental sustainability strategies and performance indicators for a more integrated sustainability framework.

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Section: Environmental Sustainability Strategies In the Steel Sectormentioning

confidence: 99%

Structuring and Measuring Environmental Sustainability in the Steel Sector: A Single Case Study

Tolettini

Maria

2023

Sustainability

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“…10,11) The solid wastes that are generally produced during steelmaking are composed of slag, dust, sludge, and mill scale produced among during metallurgical operations, metal working and emission reduction processes. 12) The main disposal route is landfilling but this has proved to be poorly efficient due to the growth in steel production and the subsequent increase of waste generation. In particular, steel slag represents the major solid waste produced by a steelmaking facility and it can contain quantities of heavy metals, metalloids, alkalis, and anions that can be released in the surrounding environment.…”

Section: Influence Of the Recirculation Of Various By-products Genera...mentioning

confidence: 99%

Influence of the Recirculation of Various by-products Generated through Electric Arc Furnace Route on EAF Slag Quality

et al. 2022

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The Fines2EAF project aims to increase the value of Electric Arc Furnace steelmaking residues by their internal recycling and reuse in form of cement-free briquettes. The project sustainability for a profitable fines' recirculation pass through the conservation of steel and slag quality in terms of chemistry, physics and eco friendliness. To do this, industrial trials have been conducted by the charging of self-reducing and slag-former briquettes made by primary and secondary fines materials. Several slag samples supplied from three different European EAF steel shops have been analysed. The specimens have been characterized by XRF, XRD and SEM to thoroughly define their crystallography, morphology and microstructure. The comparison with the corresponding reference samples (i.e., slag produced without the fines recirculation) also allowed to highlight the differences present. Leaching tests have been conducted on reference and briquette-added slag according to EN 12457-4 standard to assess the compliant with the local environmental regulation. The obtained results highlighted that the slag obtained using cement-free briquettes made by steelmaking fines exhibits crystallographic and morphological properties very similar to the reference samples, with limited differences attributed to slag and scrap feedstock intrinsic heterogeneity. No relevant increase in the leachate concentration could be detected when compared to reference samples and the influence of raw-material fines recirculation into the EAF could be considered at worst negligible, if not positive for some elements like Ba ( − 22.86%), V ( − 13.19%) and W ( − 14.83%). Considering all the analyses performed, no adverse effect on slag quality could be detected.

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“…One industrial branch that generates large amounts of waste is metallurgy, especially iron and steel metallurgy, which is the largest producer of semi-finished and finished products [2,3]. As a result of enormous metallurgical production, significant amounts of waste are generated, such as blast furnace and converter slag, various types of dust and sludge, scale, and gases [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Iron from Mill Scale by Reduction with Carbon Monoxide

2021

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The mill scale is a waste from the iron and steel industry. Due to the high content of iron in the form of oxides, it is an attractive material for the recovery of metallic iron by reduction. The product of mill scale reduction is an iron with a very extended surface and a high affinity for oxygen. The smaller iron particles are, the easier it is for spontaneous rapid oxidation, which can be linked to pyrophoricity. This article presents results of experiments using the TG/DTA thermal analysis method aimed at verifying the possibility of recovering iron from the mill scale by a reduction with carbon monoxide at 850 °C, 950 °C, and 1050 °C, taking into account the phenomenon of secondary oxidation in contact with oxygen from air at temperatures of 300 °C, 350 °C, and 400 °C. Two forms of mill scale were used for tests, in the original state and after grinding to develop the surface.

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Destination of the waste generated by a steelmaking plant: a case study in Latin America

Cited by 6 publications

References 0 publications

Structuring and Measuring Environmental Sustainability in the Steel Sector: A Single Case Study

Structuring and Measuring Environmental Sustainability in the Steel Sector: A Single Case Study

Influence of the Recirculation of Various by-products Generated through Electric Arc Furnace Route on EAF Slag Quality

Recovery of Iron from Mill Scale by Reduction with Carbon Monoxide

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