Combination of X-ray transmission and eddy-current testing for the closed-loop recycling of aluminum alloys

Takezawa, Takasi; Uemoto, Michihisa; Itoh, K.

doi:10.1007/s10163-013-0228-4

Cited by 21 publications

(15 citation statements)

References 4 publications

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“…However, unfortunately, the presence of numerous impurities in their scrap is a big challenge [65]. These scraps usually have a variety of impurities such as unfavorable metallic elements (Mn, Cu, Zn, Fe, Ni, Si, etc) and various non-metallic impurities (carbides, oxides, nitrides, etc) [66,67]. In this regard, Meng et al [64] proposed a novel liquation-based supergravity method for simultaneous recycling of Al and Mg scraps.…”

Section: Al-mg Alloysmentioning

confidence: 99%

Melt refining and purification processes in Al alloys: a comprehensive study

Wu¹,

Djavanroodi²,

Göde³

et al. 2022

Mater. Res. Express

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Aluminum and its alloys having lots of advantageous properties are among the most-used metallic materials. So, it is of immense importance to find suitable processes and methods leading to high-quality purified Al melt. In this regard, there are numerous challenges in achieving high purity Al melts, such as its propensity to react with air, oxygen, and water vapor, the presence of a variety of oxide, non-oxide, and solid particle inclusions that lead to the production of pores, cracks, pinholes, and dross, finally adversely influencing the overall quality of the product. The main methods of melt refining are fluxing, floatation, and filtration, but more sophisticated methods have also emerged. The best method for purification can be chosen based on the type of impurities and the desired level of purification. With the industrial development, the need to establish more cost-effective and simpler methods has increased, and in addition, methods should be considered for recycling large volumes of scarp Al parts that contain more impurities. Moreover, achieving high purity melt is also a vital issue for use in specific applications. The present article has been written to discuss the above issues and focus on the study of various methods of aluminum purification.

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Section: Al-mg Alloysmentioning

confidence: 99%

Melt refining and purification processes in Al alloys: a comprehensive study

Wu¹,

Djavanroodi²,

Göde³

et al. 2022

Mater. Res. Express

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“…Hence, XRF can only be used to define the battery type after opening the batteries, while XRT can analyse the batteries while still inside an electronic product. For waste recycling, XRT has previously been adopted to identify organic and inorganic waste, sort plastics and sort metals (InnospeXion, 2020;Montagner et al, 2014;Takezawa et al, 2015). Tests have also been performed to determine the degradation of LIBs by evaluating the state of battery features visible on XRT images (Chen & Shen, 2017).…”

Section: Applying Deep Learning To Xrt Imagesmentioning

confidence: 99%

Detection and recognition of batteries on X-Ray images of waste electrical and electronic equipment using deep learning

Sterkens

Díaz‐Romero

Goedemé

et al. 2021

Resources, Conservation and Recycling

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“…This technology is sometimes coupled with other techniques, such as XRF [55] and eddy current [56,57].…”

Section: Innovative Sorting Solutionsmentioning

confidence: 99%

Preparation and Melting of Scrap in Aluminum Recycling: A Review

Capuzzi

Timelli

2018

Metals

171

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Abstract:This work provides an overview of the aluminum (Al) recycling process, from the scrap upgrading to the melting process. Innovations and new trends regarding the Al recycling technologies are highlighted. Aluminum recycling offers advantages in terms of environmental and economic benefits. The presence of deleterious impurities in recycled Al alloys is increasing and this is the main drawback if compared to primary alloys. The continuous growth of undesired elements can be mitigated by different technologies, preliminary operations and treatments, and by the optimization of the melting process. Downgrading and dilution are possible solutions to reduce the rate of impurities, but they are not sustainable if the final use of Al alloy continuously increases. The main objectives in the development of the Al recycling are shown and discussed. In particular, the evolution of preliminary treatments of the scrap, as sorting, comminution and de-coating, is reported and a review of the melting technologies is also presented. However, the choice of performing preliminary operations to the melting stage, thus improving the operating conditions during the furnace running, is a trade-off between costs and process efficiency.

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Combination of X-ray transmission and eddy-current testing for the closed-loop recycling of aluminum alloys

Cited by 21 publications

References 4 publications

Melt refining and purification processes in Al alloys: a comprehensive study

Melt refining and purification processes in Al alloys: a comprehensive study

Detection and recognition of batteries on X-Ray images of waste electrical and electronic equipment using deep learning

Preparation and Melting of Scrap in Aluminum Recycling: A Review

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