{"id":9705,"date":"2021-07-29T07:56:15","date_gmt":"2021-07-29T07:56:15","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9705"},"modified":"2021-07-29T07:56:15","modified_gmt":"2021-07-29T07:56:15","slug":"aluminum-recovery","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-recovery\/","title":{"rendered":"R\u00e9cup\u00e9ration de l'aluminium"},"content":{"rendered":"<p>Dans le processus de r\u00e9cup\u00e9ration de l'aluminium, la filtration de la masse d'aluminium fondu par CFF constitue la derni\u00e8re \u00e9tape de purification, proche de la fusion et de la coul\u00e9e. Auparavant, les op\u00e9rations d'affinage, de levage et de d\u00e9gazage s'effectuaient \u00e0 l'ext\u00e9rieur du four. Bien que les inclusions et les gaz aient \u00e9t\u00e9 \u00e9limin\u00e9s dans une proportion allant de 60% \u00e0 80%, les impuret\u00e9s les plus fines restent dispers\u00e9es dans la masse fondue, et de nouvelles inclusions se forment au cours des op\u00e9rations d\u2019affinage et d\u2019\u00e9coulement. Avant la coul\u00e9e, ces phases fines doivent s\u2019agr\u00e9ger, cro\u00eetre et se s\u00e9parer. Par rapport \u00e0 d\u2019autres m\u00e9thodes de purification, la <a href=\"http:\/\/www.alalloycasting.com\/fr\/cff-filtration\/\">Filtration CFF<\/a> Cette m\u00e9thode est d\u00e9sormais le proc\u00e9d\u00e9 privil\u00e9gi\u00e9 pour l'\u00e9limination finale des impuret\u00e9s, en raison de ses avantages : faible consommation d'\u00e9nergie, simplicit\u00e9 d'utilisation, faible intensit\u00e9 de main-d'\u0153uvre, grande efficacit\u00e9 d'\u00e9limination des impuret\u00e9s et faible impact sur l'environnement.<\/p>\n<p>Dans le processus de production actuel de certaines fonderies, la teneur en aluminium des scories r\u00e9siduelles se situe g\u00e9n\u00e9ralement entre 40% et 80%. Il convient d'accorder une attention particuli\u00e8re \u00e0 la r\u00e9cup\u00e9ration de l'aluminium contenu dans ces scories, ce qui permet \u00e0 la fonderie de recycler l'aluminium.<\/p>\n<p>L'aluminium poss\u00e8de d'excellentes propri\u00e9t\u00e9s et ne se corrode pratiquement pas \u00e0 l'usage. Il est largement utilis\u00e9 dans des applications civiles et militaires. Il est hautement recyclable et rev\u00eat une grande importance dans la valorisation des ressources secondaires.<\/p>\n<p>Le r\u00f4le fondamental de l'aluminium dans la transition \u00e9cologique et la protection de l'environnement est un fait av\u00e9r\u00e9. La production d'aluminium primaire n\u00e9cessite une source d'\u00e9nergie stable : pour obtenir de l'aluminium \u00e0 partir de d\u00e9chets ou de mat\u00e9riaux recycl\u00e9s, il suffit de 5% de l'\u00e9nergie n\u00e9cessaire \u00e0 la production d'aluminium primaire.<\/p>\n<p>Pour de nombreuses raisons, le recyclage de l'aluminium est un choix judicieux. La production d'aluminium \u00e0 partir de ferraille conserve des performances \u00e9lev\u00e9es en termes d'efficacit\u00e9, de d\u00e9carburation et de durabilit\u00e9 ; cela est possible car la ferraille est refondue avec des \u00e9l\u00e9ments chimiques afin de produire des alliages hautement performants et d'une grande puret\u00e9, comparables aux lingots d'aluminium recycl\u00e9s issus de l'aluminium primaire.<\/p>\n<p>Les d\u00e9chets d\u2019aluminium et d\u2019alliages d\u2019aluminium recycl\u00e9s pr\u00e9sentent les caract\u00e9ristiques suivantes : origines diverses, formes vari\u00e9es, souvent incrust\u00e9s, m\u00e9lang\u00e9s \u00e0 ou recouverts de certains m\u00e9taux et non-m\u00e9taux autres que l\u2019aluminium, composition tr\u00e8s variable et surface non propre. Si ces substances ne sont pas \u00e9limin\u00e9es avant la fusion, cela entra\u00eenera une forte contamination du m\u00e9tal en fusion, ce qui se traduira par des pores, un manque de densit\u00e9 et d\u2019autres d\u00e9fauts lors du processus de solidification ult\u00e9rieur. De plus, la pr\u00e9sence de certains m\u00e9taux autres que l\u2019aluminium rendra la composition du mat\u00e9riau non conforme et d\u00e9t\u00e9riorera ses performances. Le m\u00e9lange de divers min\u00e9raux non m\u00e9talliques entra\u00eene la formation d\u2019inclusions non m\u00e9talliques, ce qui r\u00e9duit \u00e9galement les performances et la qualit\u00e9 du mat\u00e9riau.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the aluminum recovery process, CFF aluminum melt filtration is the last purification process close to smelting and casting. Previously, the furnace was refining, lifting,&hellip;<\/p>","protected":false},"author":1,"featured_media":9718,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9705","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Recovery Process with CFF Aluminum Melt Filtration<\/title>\n<meta name=\"description\" content=\"In the aluminum recovery process, CFF aluminum melt filtration is the last purification process close to smelting and casting.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/fr\/aluminum-recovery\/\" \/>\n<meta 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