flux de raffinage<\/a> sous forme de bulles distinctes dans le m\u00e9tal en fusion, sous la surface de la masse fondue ;<\/p>\n![\"Affinage](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2022\/01\/Refining-Metals.jpg\")
<\/p>\n
4. Le m\u00e9tal en fusion est agit\u00e9 dans la zone d'affinage afin de cr\u00e9er un sch\u00e9ma de circulation dans le m\u00e9tal en fusion par rapport au point d'entr\u00e9e des bulles dans la masse fondue, de telle sorte que les bulles introduites dans la masse fondue soient transport\u00e9es radialement vers l'ext\u00e9rieur par rapport \u00e0 ce point d'entr\u00e9e, ce qui prolonge ainsi le temps de s\u00e9jour des bulles de gaz dans le m\u00e9tal en fusion et am\u00e8ne les bulles de gaz \u00e0 entrer en contact \u00e9troit avec la quasi-totalit\u00e9 de la masse de m\u00e9tal en fusion dans la zone d'affinage ;<\/p>\n
5. Extraire les gaz r\u00e9siduels de raffinage et les gaz dissous lib\u00e9r\u00e9s par le m\u00e9tal, tout en r\u00e9cup\u00e9rant et en s\u00e9parant les autres impuret\u00e9s non m\u00e9talliques pr\u00e9sentes dans la couche de scories \u00e0 la surface du m\u00e9tal en fusion ;<\/p>\n
6. Le m\u00e9tal fondu raffin\u00e9 est retir\u00e9 de la zone d'affinage.<\/p>\n
Ces gaz de raffinage ont pour caract\u00e9ristique commune d'\u00eatre inertes vis-\u00e0-vis du m\u00e9tal en fusion \u00e0 raffiner. L'argon et l'azote, ou leurs m\u00e9langes, sont privil\u00e9gi\u00e9s, bien que d'autres gaz nobles du tableau p\u00e9riodique puissent \u00eatre utilis\u00e9s dans le cadre de la pr\u00e9sente invention. D'autres gaz d'affinage utiles sont l'hydrog\u00e8ne et le monoxyde de carbone, ou leurs m\u00e9langes entre eux ou avec des gaz nobles du tableau p\u00e9riodique. Il convient de noter que l'hydrog\u00e8ne et le monoxyde de carbone peuvent \u00eatre utilis\u00e9s dans des situations o\u00f9 ils ne r\u00e9agissent pas avec le m\u00e9tal en fusion, mais r\u00e9agissent avec des impuret\u00e9s gazeuses telles que l'oxyg\u00e8ne. D\u2019autres gaz r\u00e9actifs pr\u00e9sentant des propri\u00e9t\u00e9s similaires peuvent \u00e9galement \u00eatre utilis\u00e9s, tels que l\u2019hexafluorure de soufre, le chlore et les hydrocarbures halog\u00e9n\u00e9s. Le choix d\u2019un gaz d\u2019affinage particulier repose g\u00e9n\u00e9ralement sur les caract\u00e9ristiques du m\u00e9tal sp\u00e9cifique \u00e0 affiner.<\/p>","protected":false},"excerpt":{"rendered":"
The refining metals by refining gas efficiently removes dissolved gases and other non-metallic impurities from metals in a continuous process with high metal throughput. Molten…<\/p>","protected":false},"author":1,"featured_media":12290,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[644,13166],"class_list":["post-12289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-molten-aluminum-refining","tag-refining-metals-with-flux-and-nitrogen"],"yoast_head":"\n
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