{"id":8511,"date":"2021-04-23T06:42:54","date_gmt":"2021-04-23T06:42:54","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8511"},"modified":"2026-06-29T05:39:57","modified_gmt":"2026-06-29T05:39:57","slug":"degassing-chamber","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/degassing-chamber\/","title":{"rendered":"Chambre de d\u00e9gazage en ligne pour l'aluminium fondu"},"content":{"rendered":"<p>La chambre de d\u00e9gazage pour l'aluminium fondu fonctionne selon le principe de la flottation \u00e0 l'air. Le rotor injecte un gaz inerte ou un m\u00e9lange de chlore et de gaz inerte dans l'aluminium fondu, fragmente le gaz en minuscules bulles dispers\u00e9es, et ces bulles remontent \u00e0 la surface de l'aluminium fondu. Parall\u00e8lement, les \u00e9tapes suivantes sont r\u00e9alis\u00e9es :<\/p>\n<ul>\n<li>L'hydrog\u00e8ne est absorb\u00e9 par les bulles et \u00e9limin\u00e9.<\/li>\n<li>Le chlorure est \u00e9limin\u00e9 (il se forme sous l'effet de la r\u00e9action chimique entre les m\u00e9taux alcalins et le chlore).<\/li>\n<li>Retirez les scories.<\/li>\n<\/ul>\n<h2>Mode de fonctionnement de la chambre de d\u00e9gazage en ligne<\/h2>\n<p>Le m\u00e9tal en fusion provenant du four de fusion est introduit dans la cuve de d\u00e9gazage par l'orifice d'entr\u00e9e. Les alliages d'aluminium en fusion ont g\u00e9n\u00e9ralement une temp\u00e9rature comprise entre 680 et 730 \u00b0C. Lorsque le m\u00e9tal en fusion est introduit dans la cuve de d\u00e9gazage, sa temp\u00e9rature est maintenue dans cette plage pendant toute la dur\u00e9e de l'op\u00e9ration de d\u00e9gazage dans la cuve. Parall\u00e8lement, un gaz inerte est inject\u00e9 par la t\u00eate de diffusion de gaz. Le d\u00e9gazage du m\u00e9tal en fusion s\u2019effectue pendant que la t\u00eate de diffusion de gaz, reli\u00e9e au rotor, tourne \u00e0 une vitesse comprise entre 500 et 1 000 tr\/min. Une fois la bulle \u00e9clat\u00e9e, celle-ci se diffuse compl\u00e8tement dans le m\u00e9tal en fusion pr\u00e9sent dans le r\u00e9cipient. Le gaz dissous sous forme solide et les inclusions non m\u00e9talliques en suspension dans le m\u00e9tal en fusion sont captur\u00e9s par les bulles et remontent vers l\u2019interface liquide-gaz, permettant ainsi de r\u00e9aliser le traitement de d\u00e9gazage.<\/p>\n<p>La fonction du d\u00e9flecteur plac\u00e9 autour du dispositif de diffusion de gaz est de contrer le mouvement tourbillonnaire du m\u00e9tal en fusion g\u00e9n\u00e9r\u00e9 par le mouvement de rotation de la t\u00eate rotative, cr\u00e9ant ainsi une turbulence dans l'ensemble du m\u00e9tal en fusion.<\/p>\n<p>Enfin, apr\u00e8s le d\u00e9gazage dans <a href=\"http:\/\/www.alalloycasting.com\/fr\/box-type-degassing-unit\/\">unit\u00e9 de d\u00e9gazage<\/a> Une fois cette op\u00e9ration termin\u00e9e, le m\u00e9tal en fusion traverse le canal situ\u00e9 sous la cloison, est \u00e9vacu\u00e9 par la sortie vers la chambre en aval, puis p\u00e9n\u00e8tre dans le dispositif de filtration \u00e0 plaques suivant. Plaque <a href=\"http:\/\/www.alalloycasting.com\/fr\/cff-filter-box\/\">Bo\u00eetier de filtre CFF<\/a> Ces produits constituent des \u00e9quipements indispensables aux syst\u00e8mes de purification par filtration utilis\u00e9s dans la coul\u00e9e continue et la coul\u00e9e semi-continue, afin d'assurer une filtration stable.<\/p>","protected":false},"excerpt":{"rendered":"<p>Degassing chamber for molten aluminum adopts the principle of air flotation. The rotor injects inert gas or a mixture of chlorine and inert gas into&hellip;<\/p>","protected":false},"author":1,"featured_media":8512,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8511","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>Degassing Chamber for Molten Aluminum Refining<\/title>\n<meta name=\"description\" content=\"Degassing chamber for molten aluminum adopts the principle of air flotation. 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