{"id":20840,"date":"2026-01-08T23:06:07","date_gmt":"2026-01-09T06:06:07","guid":{"rendered":"https:\/\/vpzajoti4c.onrocket.site\/news\/recycling-the-hottest-magnets-why-smco-mattersand-how-chemistry-can-unlock-it\/"},"modified":"2026-01-12T11:38:30","modified_gmt":"2026-01-12T18:38:30","slug":"recycling-the-hottest-magnets-why-smco-mattersand-how-chemistry-can-unlock-it","status":"publish","type":"news-archive","link":"https:\/\/rareearthexchanges.com\/news\/recycling-the-hottest-magnets-why-smco-mattersand-how-chemistry-can-unlock-it\/","title":{"rendered":"Recycling the Hottest Magnets: Why SmCo Matters?and How Chemistry Can Unlock It"},"content":{"rendered":"\n<p><strong>Highlights<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SmCo magnets serve high-temperature aerospace and defense applications where NdFeB fails, but face supply risks from scarce samarium and geopolitically sensitive cobalt.<\/li>\n\n\n\n<li>Hydrometallurgical recycling delivers &gt;99% samarium and ~90% cobalt recovery with lower energy than smelting, while electrochemical routes offer cleaner, modular alternatives.<\/li>\n\n\n\n<li>SmCo recycling is advancing from research to viable process options that can extend supply, reduce waste, and strengthen ex-China resilience for critical supply chains.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<p><em>A new <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1002072126000153\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"external-link\">open-access review<span class=\"sr-only\"> (opens in a new tab)<\/span><\/a> in the Journal of Rare Earths online January 2026 delivers a timely message for investors, engineers, and policymakers focused on critical-minerals resilience: samarium\u2013cobalt (SmCo) magnets may be a niche market, but they are strategically important\u2014and increasingly recyclable.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/rareearthexchanges.com\/wp-content\/uploads\/2026\/01\/SmCo-magnet-recycling-1.jpg\" alt=\"\"><\/figure>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#how-sm-co-recycling-works\">How SmCo Recycling Works<\/a><\/li><li><a href=\"#separating-the-value\">Separating the Value<\/a><\/li><li><a href=\"#the-electrochemical-wildcard\">The Electrochemical Wildcard<\/a><\/li><li><a href=\"#the-bottom-line-for-supply-chains\">The Bottom Line for Supply Chains<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">SmCo magnets rarely power mainstream EV motors.<\/h2>\n\n\n\n<p>Instead, they serve high-temperature, high-reliability applications\u2014aerospace, defense, and demanding industrial systems\u2014where neodymium-iron-boron (NdFeB) magnets can be performance-limited. <a class=\"wpil_keyword_link\" href=\"https:\/\/rareearthexchanges.com\/news\/samariums-strategic-comeback-defense-grade-magnet-criticality-reemerges-amid-china-export-risk\/\" title=\"Samarium\u2019s Strategic Comeback: Defense-Grade Magnet Criticality Reemerges Amid China Export Risk\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"92888\">SmCo magnets<\/a> can operate up to ~300 \u00b0C, offer strong resistance to corrosion and oxidation, and often reduce the need for protective coatings. That performance comes at a cost: samarium is scarce, cobalt is geopolitically sensitive, and SmCo magnets are brittle\u2014generating substantial scrap during manufacturing and at the end of life.<\/p>\n\n\n\n<p>The review synthesizes more than a decade of research showing that hydrometallurgical recycling is the most widely investigated\u2014and often highest-recovery\u2014route for recovering Sm and Co from SmCo magnet waste, typically with lower energy demand than high-temperature smelting.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-sm-co-recycling-works\">How SmCo Recycling Works<\/h2>\n\n\n\n<p>The process begins with pretreatment\u2014demagnetization and size reduction\u2014to improve downstream leaching efficiency. From there, acid leaching does the <a class=\"wpil_keyword_link\" href=\"https:\/\/rareearthexchanges.com\/news\/europes-rare-earth-gambit-romania-steps-forward-but-the-heavy-lifting-has-yet-to-begin\/\" title=\"Europe\u2019s Rare Earth Gambit: Romania Steps Forward, but the Heavy Lifting Has Yet to Begin\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"92887\">heavy lifting<\/a>, according to the authors. Conventional inorganic acids (HCl, H\u2082SO\u2084, HNO\u2083) can achieve &gt;99% samarium recovery and up to ~90% cobalt recovery, though sulfuric systems can trigger samarium precipitation, and nitric systems raise downstream wastewater and environmental-handling issues.<\/p>\n\n\n\n<p>Greener alternatives using organic acids (e.g., citric\/malic) with H\u2082O\u2082 can reduce environmental burden, but often deliver lower recoveries (around ~85%), underscoring the trade-off between performance and sustainability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"separating-the-value\">Separating the Value<\/h2>\n\n\n\n<p>After leaching, selectivity becomes everything. Solvent extraction, <a class=\"wpil_keyword_link\" href=\"https:\/\/rareearthexchanges.com\/news\/utahs-iac-plus-breakthrough-a-giant-leap-or-giant-question-mark-in-americas-rare-earth-ambitions\/\" title=\"Utah\u2019s \u201cIAC-Plus\u201d Breakthrough: A Giant Leap-or Giant Question Mark-in America\u2019s Rare Earth Ambitions?\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"92886\">ionic<\/a> liquids, deep eutectic solvents, and ion exchange can separate Sm and Co with high precision; in many flowsheets, stripping and recovery steps can exceed ~97% samarium recovery, depending on reagents and conditions. Ionic liquids and deep eutectic solvents stand out for tunability and low volatility, though cost and long-term stability remain practical hurdles.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-electrochemical-wildcard\">The Electrochemical Wildcard<\/h2>\n\n\n\n<p>Electrochemical routes are especially intriguing: using intact magnets as anodes in non-aqueous systems can reduce acid consumption and waste, while delivering &gt;85% efficiency in demonstrated setups (and potentially higher in optimized systems). These approaches hint at cleaner, more modular recycling architectures.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-bottom-line-for-supply-chains\">The Bottom Line for Supply Chains<\/h2>\n\n\n\n<p>This review makes a clear point: SmCo recycling is moving from concept to credible process options. The chemistry works; the challenge is scale-up, economics, and integration into real supply chains.<\/p>\n\n\n\n<p>For defense, aerospace, and high-performance industrial markets seeking Ex-China resilience, SmCo recycling won\u2019t replace mining\u2014but perhaps someday it can extend supply, reduce waste, and harden critical supply chains. In a world where resilience matters as much as volume, that\u2019s a quiet but meaningful breakthrough.<\/p>\n\n\n\n<p>\u00a9!-- \/wp:paragraph --&gt;<\/p><span class=\"et_bloom_bottom_trigger\"><\/span>","protected":false},"excerpt":{"rendered":"<p>SmCo magnet recycling achieves &gt;99% samarium recovery via hydrometallurgy, offering critical supply chain resilience for defense &amp; aerospace.<\/p>\n","protected":false},"author":2,"featured_media":20841,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"news-type":[122,125,128],"organization":[338],"regions":[315,320],"class_list":["post-20840","news-archive","type-news-archive","status-publish","format-standard","has-post-thumbnail","hentry","news-type-ree-news","news-type-aerospace-defense","news-type-industrial-applications","organization-neo-performance-materials","regions-china","regions-united-states"],"acf":[],"_links":{"self":[{"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/news-archive\/20840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/news-archive"}],"about":[{"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/types\/news-archive"}],"author":[{"embeddable":true,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/comments?post=20840"}],"version-history":[{"count":9,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/news-archive\/20840\/revisions"}],"predecessor-version":[{"id":72624,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/news-archive\/20840\/revisions\/72624"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/media\/20841"}],"wp:attachment":[{"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/media?parent=20840"}],"wp:term":[{"taxonomy":"news-type","embeddable":true,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/news-type?post=20840"},{"taxonomy":"organization","embeddable":true,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/organization?post=20840"},{"taxonomy":"regions","embeddable":true,"href":"https:\/\/rareearthexchanges.com\/wp-json\/wp\/v2\/regions?post=20840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}