Overview of Recent Progress in Sm-Co Based Magnets

Liu, Jinfang; Vora, Payal; Walmer, M.H.

doi:10.1016/s1006-706x(08)60202-2

Cited by 15 publications

(8 citation statements)

References 15 publications

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“…In practice, both the SmCo magnet scrap and NdFeB magnet scrap were recycled. It has been some time since the SmCo magnet was popular after it was developed in the early 1970s . Although the SmCo magnet has similar magnetic strength, it is brittle and easily cracks.…”

Section: Recycling Of Critical Metals From Weeementioning

confidence: 99%

“…It has been some time since the SmCo magnet was popular after it was developed in the early 1970s. 117 Although the SmCo magnet has similar magnetic strength, it is brittle and easily cracks. After the NdFeB magnet was utilized in 1982, other types of magnets in applications that requires strong magnetic strength, especially the electronic products, were progressively replaced by the Nd-based magnets.…”

Section: ■ Recycling Of Critical Metals From Weeementioning

confidence: 99%

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Toward Sustainability for Recovery of Critical Metals from Electronic Waste: The Hydrochemistry Processes

Sun

Cao

Xiao

et al. 2016

ACS Sustainable Chem. Eng.

209

114

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Critical metals are significantly important in the preparation of high-tech materials associated with applications on, e.g., renewable energy, sustainable materials engineering and cleaner production. This importance together with supply risk to a substantial extent within the European Union (EU) has pushed their recovery from waste being highlighted. Electronic waste, usually from end-of-life electronic products, is a notable secondary resource for this purpose because of its distinctive features. A range of critical metals, including rare-earth metals, indium, cobalt and valuable metals, such as copper, silver and gold, are possibly recovered from electronic waste. On top of the current practices of electronic waste recycling, it requires innovations on technology and breakthroughs on process design in order to promote critical metal recovery or electronic waste treatment (in general) to be green and sustainable. Significant potentials are more and more noticed from hydrochemistry (metallurgy) technologies (processes) that contribute to this development because of its flexibility, relatively high recovery rate and extraction selectivity of critical metals, and possibilities of eliminating secondary waste. In this review, critical evaluation is carried out on the aspects of (1) understanding the features of different hydrochemistry processes for recycling of (critical) metals from electronic waste; (2) identifying the difficulties for a process to be implemented into industrial application which still originate from the high complexity of electronic waste and the secondary waste generation, e.g., wastewater; (3) defining circulability of metals to be recovered and recognizing their potentials to zero waste scheme. According to the evaluation, sustainable even zero waste processing is expected to be achieved for electronic waste treatment in the long term that it is preferred to reduce or prevent the generation of electronic waste and improve material efficiency from the whole life cycle of electronic products.

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Section: Recycling Of Critical Metals From Weeementioning

confidence: 99%

Section: ■ Recycling Of Critical Metals From Weeementioning

confidence: 99%

Toward Sustainability for Recovery of Critical Metals from Electronic Waste: The Hydrochemistry Processes

Sun

Cao

Xiao

et al. 2016

ACS Sustainable Chem. Eng.

209

114

View full text Add to dashboard Cite

show abstract

“…in steel industry) and its use in cathode materials for lithium-ion batteries [3]. Other metals such as iron, copper, titanium or zirconium are sometimes added to the magnet to improve the coercivity or to modify the magnet microstructure [4], [5], [6]. Separation and recovery of metals from SmCo magnets is of interest to partially mitigate the supply risk of critical metals.…”

Section: Introductionmentioning

confidence: 99%

Samarium/cobalt separation by solvent extraction with undiluted quaternary ammonium ionic liquids

Foltova

Hoogerstraete

Banerjee

et al. 2019

Separation and Purification Technology

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“…[1][2] During the last few decades, REEs have gained considerable attention due to their unique properties and their use in a huge range of industrial applications such as petroleum refining catalysts, fluorescent glass, permanent magnets and rechargeable batteries for electric vehicles. [3][4][5][6][7][8] Industrial demand for REEs has increased and is expected to multiply during the next decade, and prices usually depend strongly on the level of purity. The separation of REEs can be difficult due to similarities in physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Rare earth elements (REEs) comprise the lanthanide series together with scandium (Sc) and yttrium (Y) (because Sc and Y have similar physicochemical properties to the lanthanides and often occur along with them in natural minerals). , During the last few decades, REEs have gained considerable attention due to their unique properties and their use in a huge range of industrial applications such as petroleum refining catalysts, fluorescent glass, permanent magnets, and rechargeable batteries for electric vehicles. − Industrial demand for REEs has increased and is expected to multiply during the next decade, and prices usually depend strongly on the level of purity. The separation of REEs can be difficult due to similarities in physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

DTPA-Functionalized Silica Nano- and Microparticles for Adsorption and Chromatographic Separation of Rare Earth Elements

Ashour

Samouhos

Legaria

et al. 2018

ACS Sustainable Chem. Eng.

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Overview of Recent Progress in Sm-Co Based Magnets

Cited by 15 publications

References 15 publications

Toward Sustainability for Recovery of Critical Metals from Electronic Waste: The Hydrochemistry Processes

Toward Sustainability for Recovery of Critical Metals from Electronic Waste: The Hydrochemistry Processes

Samarium/cobalt separation by solvent extraction with undiluted quaternary ammonium ionic liquids

DTPA-Functionalized Silica Nano- and Microparticles for Adsorption and Chromatographic Separation of Rare Earth Elements

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