{"id":11105,"date":"2021-11-10T07:11:50","date_gmt":"2021-11-10T07:11:50","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11105"},"modified":"2021-11-10T07:11:50","modified_gmt":"2021-11-10T07:11:50","slug":"purification-flux-european-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/purification-flux-european-aluminum\/","title":{"rendered":"Flux de purification de l'aluminium europ\u00e9en"},"content":{"rendered":"

Un nouveau type de flux de purification \u00e0 haut rendement remplace le flux de d\u00e9gazage traditionnel ; il est utilis\u00e9 dans les fonderies d'aluminium et les fonderies europ\u00e9ennes. La cl\u00e9 de son haut rendement en mati\u00e8re d'\u00e9limination des impuret\u00e9s r\u00e9side dans la combinaison de trois processus : la fusion de l'aluminium, la filtration par le flux, ainsi que le pi\u00e9geage par le flux et la dissolution des impuret\u00e9s, ce qui permet de r\u00e9aliser l'ensemble du processus de fusion. Ce nouveau flux de purification hautement efficace pr\u00e9sente un point de fusion bas, une faible densit\u00e9 et une bonne fluidit\u00e9.<\/p>\n

Utilis\u00e9 comme flux de filtration, il permet de former plus rapidement une couche filtrante, ce qui am\u00e9liore encore les conditions de diffusion et de migration des inclusions vers le flux, renforce l'effet de purification et am\u00e9liore consid\u00e9rablement les performances globales du mat\u00e9riau trait\u00e9.<\/p>\n

Cependant, le m\u00e9canisme d'\u00e9limination des impuret\u00e9s du flux de purification est principalement m\u00e9canique et physique, et l'\u00e9limination des inclusions fines n'est pas \u00e9vidente. Filtres en mousse c\u00e9ramique<\/a> peut \u00eatre utilis\u00e9 pour \u00e9liminer davantage les inclusions fines pr\u00e9sentes dans l'aluminium europ\u00e9en.<\/p>\n

\"Purification<\/p>\n

Depuis le d\u00e9but de la production industrielle \u00e0 grande \u00e9chelle de l'aluminium en 1886, l'industrie europ\u00e9enne de l'aluminium n'a cess\u00e9 de cro\u00eetre. L'aluminium est aujourd'hui le m\u00e9tal qui conna\u00eet la plus forte croissance et le deuxi\u00e8me m\u00e9tal le plus utilis\u00e9 au monde.<\/p>\n

Au d\u00e9part, l'industrie europ\u00e9enne de l'aluminium ne comptait qu'un nombre restreint de producteurs d'aluminium primaire. Cependant, quelques ann\u00e9es plus tard, des fabricants de produits semi-finis et forg\u00e9s ont rejoint le secteur, suivis par des entreprises de recyclage en 2013.<\/p>\n

\u00c0 l'heure actuelle, Aluminium Europe repr\u00e9sente l'ensemble de la cha\u00eene de valeur, de la production primaire au recyclage, avec plus de 85 entreprises et associations nationales parmi ses membres, et un total de plus de 600 usines en Europe (UE, Royaume-Uni, AELE et Turquie).<\/p>\n

Avant d'utiliser le fondant de purification, l'aluminium europ\u00e9en doit \u00eatre soigneusement s\u00e9ch\u00e9 afin d'\u00e9liminer toute trace d'humidit\u00e9. Cela permet d'\u00e9viter les risques d'explosion et d'am\u00e9liorer l'efficacit\u00e9 de l'affinage. La temp\u00e9rature d'affinage doit \u00eatre maintenue \u00e0 la limite sup\u00e9rieure de la temp\u00e9rature de coul\u00e9e afin d'optimiser l'efficacit\u00e9 de l'affinage. La quantit\u00e9 de fondant doit \u00eatre suffisante. Pour les produits soumis \u00e0 des exigences de puret\u00e9 interne plus \u00e9lev\u00e9es, la quantit\u00e9 peut \u00eatre plus importante. La quantit\u00e9 utilis\u00e9e est g\u00e9n\u00e9ralement de 4 \u00e0 5 kg\/t de m\u00e9tal ; pour les produits courants, elle est de 2 \u00e0 3 kg\/t de m\u00e9tal.<\/p>","protected":false},"excerpt":{"rendered":"

A new type of high-efficiency purification flux replaces the traditional degassing flux, it is used for European aluminum smelter and foundry. 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