{"id":1489,"date":"2025-08-21T16:08:08","date_gmt":"2025-08-21T08:08:08","guid":{"rendered":"https:\/\/www.battery-material.com\/?p=1489"},"modified":"2025-08-21T16:13:11","modified_gmt":"2025-08-21T08:13:11","slug":"why-did-we-abandon-the-dual-axis-slow-shredding-technology","status":"publish","type":"post","link":"https:\/\/www.battery-material.com\/fr\/why-did-we-abandon-the-dual-axis-slow-shredding-technology\/","title":{"rendered":"Pourquoi avons-nous abandonn\u00e9 la technologie de d\u00e9chiquetage lent \u00e0 deux axes ?"},"content":{"rendered":"<p>La technologie de recyclage des batteries au lithium suit l&#039;ordre suivant\u00a0: d&#039;abord, les d\u00e9chets de production et les produits d\u00e9fectueux sont recycl\u00e9s. Ensuite, les batteries au lithium hors d&#039;usage arrivent. Par cons\u00e9quent, la technologie de la cha\u00eene d&#039;\u00e9lectrodes est arriv\u00e9e en premier, suivie de la technologie de la cha\u00eene de batteries.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"767\" height=\"1024\" src=\"https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Lithium-electrode-sheet-767x1024.webp\" alt=\"\" class=\"wp-image-1490\" srcset=\"https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Lithium-electrode-sheet-767x1024.webp 767w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Lithium-electrode-sheet-225x300.webp 225w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Lithium-electrode-sheet-768x1025.webp 768w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Lithium-electrode-sheet-9x12.webp 9w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Lithium-electrode-sheet.webp 1080w\" sizes=\"(max-width: 767px) 100vw, 767px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Broyeur \u00e0 double arbre \u00e0 vitesse lente<\/h2>\n\n\n\n<p>Les broyeurs \u00e0 double arbre \u00e0 vitesse lente sont une caract\u00e9ristique typique de la technologie des lignes d&#039;\u00e9lectrodes. Ce proc\u00e9d\u00e9 envoie g\u00e9n\u00e9ralement les d\u00e9chets cathodiques sur un tapis roulant. Ils sont ensuite achemin\u00e9s vers un broyeur \u00e0 double arbre pour un concassage primaire. La granulom\u00e9trie obtenue est d&#039;environ 100 mm. Le mat\u00e9riau entre ensuite dans le concasseur \u00e0 percussion par la partie inf\u00e9rieure pour un concassage secondaire. La granulom\u00e9trie varie de 10 mm \u00e0 30 mm, selon les besoins de l&#039;\u00e9quipement en aval. L&#039;utilisation d&#039;un broyeur pour le concassage primaire \u00e9vite le colmatage du concasseur \u00e0 percussion, car il y a moins de mat\u00e9riaux emm\u00eal\u00e9s. Le broyeur et le concasseur sont superpos\u00e9s.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi n&#039;est-il pas recommand\u00e9 d&#039;utiliser un broyeur lent \u00e0 double arbre ?<\/h2>\n\n\n\n<p>De nombreuses entreprises et institutions d\u00e9veloppent leurs gammes de batteries gr\u00e2ce \u00e0 la technologie des \u00e9lectrodes. Elles n\u00e9gligent souvent les innovations con\u00e7ues pour les batteries au lithium hors d&#039;usage.<\/p>\n\n\n\n<p>Les batteries au lithium hors d&#039;usage ne ressemblent pas \u00e0 de longues bandes d&#039;\u00e9lectrodes usag\u00e9es. Elles sont d\u00e9pourvues d&#039;enveloppe ext\u00e9rieure r\u00e9sistante. Elles se pr\u00e9sentent g\u00e9n\u00e9ralement sous trois formes\u00a0: cylindrique, souple et carr\u00e9e. Le mat\u00e9riau de l&#039;enveloppe est r\u00e9sistant. Le mat\u00e9riau interne est \u00e9troitement enroul\u00e9 en forme de disque. Ceci est tr\u00e8s diff\u00e9rent des longues bandes d&#039;\u00e9lectrodes usag\u00e9es, l\u00e2ches et l\u00e2ches.<\/p>\n\n\n\n<p>Ensuite, les batteries au lithium hors d&#039;usage sont charg\u00e9es. Toute rupture endommagera d&#039;abord le diaphragme. Cela inclut la p\u00e9n\u00e9tration, l&#039;extrusion, la perforation des dendrites de lithium, le r\u00e9tr\u00e9cissement, la fusion et l&#039;effondrement. Il en r\u00e9sulte un court-circuit interne. Une m\u00e9thode de rupture et des conditions de fonctionnement inappropri\u00e9es peuvent entra\u00eener une \u00e9l\u00e9vation rapide de la temp\u00e9rature et une accumulation de chaleur. Une l\u00e9g\u00e8re augmentation de la temp\u00e9rature peut entra\u00eener la rupture du film SEI de la batterie. L&#039;\u00e9lectrolyte entre alors en contact avec le lithium m\u00e9tallique du graphite de l&#039;\u00e9lectrode n\u00e9gative. Les \u00e9lectrodes positive et n\u00e9gative interagissent. Le mat\u00e9riau de l&#039;\u00e9lectrode positive change de phase, lib\u00e9rant de l&#039;oxyg\u00e8ne. Cet oxyg\u00e8ne r\u00e9agit avec le carbure de lithium r\u00e9duit de l&#039;\u00e9lectrode n\u00e9gative. Un emballement thermique se produit, provoquant des accidents tels que de la fum\u00e9e, des incendies et des explosions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Probl\u00e8mes de s\u00e9curit\u00e9 lors de l&#039;utilisation d&#039;un broyeur lent \u00e0 double arbre<\/h3>\n\n\n\n<p>Le flux d&#039;azote permet de contr\u00f4ler les niveaux d&#039;oxyg\u00e8ne. Cela emp\u00eache la lib\u00e9ration de solvants carbonat\u00e9s de l&#039;\u00e9lectrolyte pendant le broyage. Ces solvants peuvent s&#039;enflammer aux temp\u00e9ratures d&#039;\u00e9clair. Si l&#039;augmentation temporaire de temp\u00e9rature entra\u00eene un changement de phase du mat\u00e9riau de la cathode et une lib\u00e9ration d&#039;oxyg\u00e8ne, l&#039;effet protecteur du contr\u00f4le de l&#039;azote diminue consid\u00e9rablement. L&#039;utilisation d&#039;un proc\u00e9d\u00e9 de broyage \u00e0 deux axes et \u00e0 basse vitesse est susceptible de provoquer des incendies dans les batteries ternaires d\u00e9class\u00e9es et charg\u00e9es. Les batteries lithium-ion d\u00e9class\u00e9es charg\u00e9es sont plus stables et prennent rarement feu. Cependant, elles peuvent encore d\u00e9gager des vapeurs et de la fum\u00e9e nocives.<\/p>\n\n\n\n<p>Le processus de d\u00e9chiquetage doit contr\u00f4ler efficacement l&#039;\u00e9l\u00e9vation de temp\u00e9rature de la batterie due au court-circuit. Le broyeur \u00e0 deux axes \u00e0 faible vitesse fonctionne \u00e0 une vitesse de 5 \u00e0 70 tr\/min. Cette vitesse laisse trop de temps \u00e0 l&#039;\u00e9l\u00e9vation de temp\u00e9rature due au court-circuit, ce qui peut entra\u00eener un emballement thermique. Le temps est la seule variable cl\u00e9 contr\u00f4lable.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Causes des probl\u00e8mes de s\u00e9curit\u00e9<\/h4>\n\n\n\n<p>Pour \u00e9viter la fum\u00e9e, les incendies et les explosions, les fabricants de ce type d&#039;\u00e9quipements exigent souvent que les cellules de batterie soient d\u00e9charg\u00e9es. Cela est particuli\u00e8rement vrai pour les batteries ternaires charg\u00e9es. Mais qu&#039;il s&#039;agisse d&#039;une d\u00e9charge physique, d&#039;une d\u00e9charge chimique par saumure ou d&#039;autres m\u00e9thodes, les effets secondaires sont importants. Vous pouvez consulter l&#039;article sur les effets secondaires de la d\u00e9charge d&#039;une cellule unique sur le compte WeChat officiel. Pourquoi est-il important de d\u00e9charger les cellules de batterie dans le projet de norme nationale \u00ab\u00a0Sp\u00e9cifications techniques de s\u00e9curit\u00e9 pour le d\u00e9montage et le broyage des batteries automobiles\u00a0\u00bb\u00a0? Cela ne correspond pas \u00e0 la technologie actuelle de broyage direct des batteries charg\u00e9es dont les industriels ont besoin.<\/p>\n\n\n\n<p>Ensuite, le processus de pyrolyse intervient apr\u00e8s l&#039;\u00e9tape de broyage. Cette \u00e9tape requiert la plus grande surface de chauffe pour le mat\u00e9riau broy\u00e9. Le broyeur \u00e0 double arbre \u00e0 vitesse lente ne fait pas tourner correctement le mat\u00e9riau de la batterie, ce qui entra\u00eene un manque d&#039;expansion de la surface de chauffe. Si un broyeur \u00e0 marteaux est utilis\u00e9 juste apr\u00e8s, les feuilles de cuivre et d&#039;aluminium entourent la poudre noire, ce qui affaiblit l&#039;effet de rotation et r\u00e9duit encore davantage la surface de chauffe de la pyrolyse.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Il existe plusieurs innovations techniques mineures :<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Contr\u00f4ler le niveau d&#039;oxyg\u00e8ne pour convertir davantage de fluor en fluorure d&#039;hydrog\u00e8ne gazeux. Cela permet d&#039;\u00e9viter la formation de fluorure de lithium dans la poudre noire, facilitant ainsi l&#039;extraction par voie humide.<\/li>\n\n\n\n<li>Traiter l&#039;augmentation de la temp\u00e9rature due aux micro-courts-circuits et pr\u00e9venir les chocs \u00e9lectriques dans les mat\u00e9riaux \u00e9cras\u00e9s.<\/li>\n\n\n\n<li>Maximiser la surface chauff\u00e9e des mat\u00e9riaux broy\u00e9s pour am\u00e9liorer le processus de pyrolyse.<\/li>\n\n\n\n<li>Conservez les feuilles de cuivre et d&#039;aluminium intactes. Cela emp\u00eache la formation de poudre d&#039;aluminium lors du broyage. Il est ainsi plus facile de trier et d&#039;\u00e9liminer ult\u00e9rieurement le cuivre et l&#039;aluminium.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Le meilleur choix apr\u00e8s it\u00e9ration technologique \u2013 \u00e9quipement de cisaillement \u00e0 grande vitesse<\/h2>\n\n\n\n<p>Finalement, nous avons abandonn\u00e9 la technologie de la ligne d&#039;\u00e9lectrodes. Nous nous sommes concentr\u00e9s sur les mati\u00e8res premi\u00e8res des batteries usag\u00e9es. Gr\u00e2ce aux recherches et aux travaux pratiques de notre \u00e9quipe d&#039;ing\u00e9nieurs, nous avons modifi\u00e9 la technologie de broyage lent \u00e0 deux axes. Nous utilisons d\u00e9sormais une technologie de cisaillage et de broyage \u00e0 grande vitesse. Nous l&#039;avons appliqu\u00e9e, entre autres, aux projets Zhejiang Tianneng Huzhou et Ningbo Wei Fu Lishui. Les r\u00e9sultats ont \u00e9t\u00e9 positifs et it\u00e9ratifs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c9quipement de cisaillement \u00e0 grande vitesse recommand\u00e9<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Technologie du broyeur cyclone\u00a0: une avanc\u00e9e r\u00e9volutionnaire dans le d\u00e9capage \u00e0 sec<\/h4>\n\n\n\n<p>Les broyeurs cycloniques utilisent la pulv\u00e9risation par flux d&#039;air \u00e0 grande vitesse. Ce flux d&#039;air \u00e0 grande vitesse dans la chambre de broyage sp\u00e9ciale provoque la collision et le frottement des mat\u00e9riaux. Ce proc\u00e9d\u00e9 \u00e9limine efficacement les mat\u00e9riaux des \u00e9lectrodes. Cette technologie r\u00e9sout les probl\u00e8mes de la pulv\u00e9risation m\u00e9canique traditionnelle et \u00e9vite la pollution due aux proc\u00e9d\u00e9s humides. De plus, elle ouvre une nouvelle voie pour le recyclage des batteries au lithium.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Turbo-Mill.webp\" alt=\"Turbo-broyeur\" class=\"wp-image-1491\" srcset=\"https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Turbo-Mill.webp 800w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Turbo-Mill-300x169.webp 300w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Turbo-Mill-768x432.webp 768w, https:\/\/www.battery-material.com\/wp-content\/uploads\/2025\/08\/Turbo-Mill-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Le broyeur cyclone est de conception modulaire. Il comprend principalement\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>un syst\u00e8me d&#039;alimentation,<\/li>\n\n\n\n<li>un syst\u00e8me de pulv\u00e9risation,<\/li>\n\n\n\n<li>un syst\u00e8me de notation,<\/li>\n\n\n\n<li>un syst\u00e8me de collecte.<\/li>\n<\/ul>\n\n\n\n<p>Ses pi\u00e8ces ma\u00eetresses sont fabriqu\u00e9es en c\u00e9ramique r\u00e9sistante, ce qui prolonge la dur\u00e9e de vie de l&#039;\u00e9quipement. La conception sp\u00e9ciale du champ d&#039;\u00e9coulement r\u00e9partit uniform\u00e9ment les mat\u00e9riaux dans la chambre de broyage, am\u00e9liorant ainsi l&#039;efficacit\u00e9 du d\u00e9capage.<\/p>\n\n\n\n<p>Compar\u00e9e aux proc\u00e9d\u00e9s humides traditionnels, la technologie du broyeur cyclone offre des avantages consid\u00e9rables. La consommation d&#039;\u00e9nergie est r\u00e9duite de plus de 401 TP3T. L&#039;efficacit\u00e9 du traitement est augment\u00e9e de 501 TP3T. De plus, les rejets d&#039;eaux us\u00e9es sont totalement \u00e9limin\u00e9s. Ces avantages en font une technologie de pointe pour le recyclage des batteries au lithium.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>La technologie de recyclage des batteries au lithium suit cet ordre\u00a0: d\u2019abord, les d\u00e9chets de production et les produits d\u00e9fectueux sont recycl\u00e9s. Ensuite, les batteries au lithium hors d\u2019usage arrivent. Par cons\u00e9quent, la technologie de la ligne d\u2019\u00e9lectrodes est arriv\u00e9e en premier, suivie de celle de la ligne de batteries. Broyeur \u00e0 double arbre \u00e0 vitesse lente. Les broyeurs \u00e0 double arbre \u00e0 vitesse lente sont un \u00e9l\u00e9ment typique de la technologie de la ligne d\u2019\u00e9lectrodes. Le processus envoie g\u00e9n\u00e9ralement les d\u00e9chets cathodiques sur un [\u2026]<\/p>","protected":false},"author":1,"featured_media":1491,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[],"class_list":["post-1489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lithium-battery-recycling"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why did we abandon the dual-axis slow shredding technology? - Battery material powder-making equipment from China<\/title>\n<meta name=\"description\" content=\"We changed the dual-axis slow shredding technology based on our engineering team&#039;s research and hands-on work. 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