Life-Cycle Assessment of Nd–Fe–B Rare Earth Magnet Production

Nd-Fe-Bレアアース磁石製造のライフサイクルアセスメント (AI 翻訳)

THAMIRES MARTINHO PRADOS, Leda Maria Saragiotto Colpini, GIANCARLO ALFONSO LOVÓN-CANCHUMANI

ACS Omega📚 査読済 / ジャーナル2026-06-16#エネルギー転換Origin: Global経営インパクト: 調達リスク対象セクター: manufacturing

DOI: 10.1021/acsomega.6c01994

原典: https://doi.org/10.1021/acsomega.6c01994

🤖 gxceed AI 要約

日本語

ブラジルにおけるNd-Fe-B磁石のライフサイクルアセスメントを実施。採掘・精錬・製造の各段階で環境影響を定量化し、特に採掘時の焙焼工程と製造時の機械加工が大きな影響を持つことを示した。再生可能エネルギーの導入や工程効率改善が炭素フットプリント削減に有効と提案。

English

This study conducts a life-cycle assessment of Nd-Fe-B magnets in Brazil, quantifying environmental impacts across mining, refining, and manufacturing stages. It identifies roasting in mining and machining in manufacturing as hotspots, and suggests renewable energy adoption and process efficiency improvements to reduce carbon footprint.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本はレアアース磁石の主要生産国であり、EV・再生可能エネルギー需要拡大に伴いサプライチェーン全体の環境負荷評価が重要。本研究成果は、日本の磁石メーカーが海外調達時のScope 3排出量算定や環境対応に活用できる示唆を含む。

In the global GX context

As rare earth magnets are critical for EVs and renewables, this LCA provides valuable data for global supply chain decarbonization. It aligns with ISSB/CSRD requirements for Scope 3 disclosure and supports transition finance decisions by highlighting environmental hotspots in magnet production.

👥 読者別の含意

🔬研究者:LCA手法とレアアース磁石の環境ホットスポットに関する具体的データを提供。

🏢実務担当者:サプライチェーン排出量算定や調達戦略の改善に活用可能。

🏛政策担当者:レアアース産業の環境規制や循環経済政策の根拠となる。

📄 Abstract（原文）

Rare-earth elements are strategic materials essential for renewable energy, electronics, and electric mobility. The growing demand emphasizes the need for a sustainable and efficient supply, considering environmental and economic aspects. Among their main applications are neodymium-iron-boron (Nd-Fe-B) permanent magnets, whose production chain presents significant environmental impactsfrom mining to final manufacturing. This study assesses the life cycle of Nd-Fe-B magnets in the Brazilian context, following ISO 14040 and ISO 14044 standards. System modeling was performed in Sankey software, and environmental impacts were calculated using SimaPro 9.1 with data from the EcoInvent database and literature sources. Results indicate that mining is highly impactful, particularly during the roasting stage, due to high energy consumption and emissions of particulate matter and greenhouse gases. In oxide production, leaching and preseparation steps stand out for their use of hydrochloric acid, contributing to marine eutrophication and ionizing radiation. Magnet manufacturing, especially machining, shows major impacts on global warming, ozone depletion, and water use. The study highlights the need for mitigation strategies, such as stricter regulations, circular economy initiatives, and cleaner technologies. Incorporating renewable energy and improving ore processing efficiency can significantly reduce the carbon footprint of Nd-Fe-B magnets.

🔗 Provenance — このレコードを発見したソース

openalex https://doi.org/10.1021/acsomega.6c01994first seen 2026-07-06 04:41:34

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