{"id":9579,"date":"2021-07-14T06:42:25","date_gmt":"2021-07-14T06:42:25","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9579"},"modified":"2021-07-14T06:42:25","modified_gmt":"2021-07-14T06:42:25","slug":"molten-aluminum-gas-purifier","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/molten-aluminum-gas-purifier\/","title":{"rendered":"Purificateur de gaz pour aluminium fondu"},"content":{"rendered":"<p>La purification de l'aluminium fondu par un \u00e9purateur de gaz consiste \u00e0 introduire un gaz dans la masse d'aluminium fondu ou \u00e0 ajouter des substances capables de produire un gaz purifi\u00e9. La diff\u00e9rence de pression partielle entre la masse d'aluminium fondu et la bulle est utilis\u00e9e pour faire diffuser l'hydrog\u00e8ne dans la bulle, laquelle est ensuite captur\u00e9e lors de son ascension. L'inclusion d'\u00e9cume, etc., permet ainsi d'atteindre l'objectif d'\u00e9limination de l'hydrog\u00e8ne et des impuret\u00e9s. L'objectif principal de la purification de l'aluminium fondu par injection de gaz est d'\u00e9liminer l'hydrog\u00e8ne. Parall\u00e8lement, les impuret\u00e9s pr\u00e9sentes dans le bain fondu interagissant avec l'hydrog\u00e8ne, le processus d'\u00e9limination de l'hydrog\u00e8ne s'accompagne d'une \u00e9limination des impuret\u00e9s.<\/p>\n<p>Il existe toute une gamme de dispositifs de d\u00e9gazage continu \u00e0 haut rendement disponibles en ligne, et la m\u00e9thode d\u2019introduction de bulles d\u2019air purifi\u00e9 a \u00e9volu\u00e9, passant de l\u2019injection \u00e0 tube unique d\u2019origine \u00e0 la t\u00eate de soufflage poreuse, puis \u00e0 la buse rotative actuelle. Le nouveau proc\u00e9d\u00e9 utilisant des buses rotatives est consid\u00e9r\u00e9 comme la m\u00e9thode d'introduction de gaz la plus avanc\u00e9e et la plus efficace \u00e0 l'heure actuelle. Les m\u00e9thodes SNIF, Alpur, FILD et AdTech <a href=\"http:\/\/www.alalloycasting.com\/fr\/online-degassing-device\/\">dispositif de d\u00e9gazage en ligne<\/a> sont toutes des technologies courantes pour les buses rotatives. Il existe par ailleurs une m\u00e9thode de pulv\u00e9risation du flux visant \u00e0 am\u00e9liorer l'efficacit\u00e9 du contact entre l'aluminium en fusion et les bulles, gr\u00e2ce \u00e0 une circulation optimale de l'aluminium en fusion.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9195\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/06\/Double-rotor-Degassing-System.jpg\" alt=\"Syst\u00e8me de d\u00e9gazage \u00e0 double rotor\" width=\"400\" height=\"500\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/06\/Double-rotor-Degassing-System.jpg 400w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/06\/Double-rotor-Degassing-System-240x300.jpg 240w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>Le proc\u00e9d\u00e9 d'\u00e9limination de l'hydrog\u00e8ne par flottation \u00e0 bulles repose sur un principe simple et son fonctionnement est ais\u00e9. Il permet d'\u00e9liminer efficacement les inclusions non m\u00e9talliques de l'aluminium fondu, mais son efficacit\u00e9 en mati\u00e8re de d\u00e9gazage et d'\u00e9limination des impuret\u00e9s est limit\u00e9e par la taille et la quantit\u00e9 des bulles, le temps de s\u00e9jour et la vitesse. La quantit\u00e9 de gaz purifi\u00e9 est importante et son rendement d'utilisation est faible ; de plus, \u00e0 mesure que la quantit\u00e9 d'hydrog\u00e8ne dissous dans la masse fondue diminue progressivement, l'efficacit\u00e9 de l'\u00e9limination de l'hydrog\u00e8ne du gaz purifi\u00e9 diminue \u00e9galement progressivement. Il convient donc de se pencher sur la bulle elle-m\u00eame, le dispositif de purification et le principe de purification afin de renforcer davantage le r\u00f4le du purificateur de gaz pour l'aluminium fondu dans l'\u00e9limination de l'hydrog\u00e8ne et des impuret\u00e9s.<\/p>","protected":false},"excerpt":{"rendered":"<p>Purification of molten aluminum gas purifier refers to the introduction of gas into the aluminum melt or the addition of substances that can produce purified&hellip;<\/p>","protected":false},"author":1,"featured_media":9580,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9579","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>Molten Aluminum Gas Purifier 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