agents de rev\u00eatement<\/a>. Cependant, l'ajout d'une petite quantit\u00e9 de sel fluor\u00e9 au m\u00e9lange de sels chlor\u00e9s sert principalement \u00e0 \u00e9liminer les r\u00e9sidus. Parall\u00e8lement, le sel chlor\u00e9 peut renforcer la capacit\u00e9 de l'agent de nettoyage des scories \u00e0 adsorber les inclusions d'oxydation.<\/p>\nLa fusion est un \u00e9l\u00e9ment cl\u00e9 de la technologie de recyclage des d\u00e9chets d'aluminium, et la qualit\u00e9 de cette technologie d\u00e9pend en grande partie du fondant utilis\u00e9 et du proc\u00e9d\u00e9 de traitement associ\u00e9.<\/p>\n
Le processus de fusion se d\u00e9roule comme suit :<\/p>\n
1. Nettoyez d'abord le four \u00e0 creuset, la louche de coul\u00e9e, la cloche \u00e0 vide et le moule de l'\u00e9chantillon \u00e0 couler, puis pr\u00e9chauffez-les. Une fois la temp\u00e9rature atteinte \u00e0 environ 200 \u2103, appliquez la peinture puis laissez s\u00e9cher ;
\n2. Lors de la fusion, ajoutez d\u2019abord le lingot d\u2019aluminium d\u2019alliage, chauffez-le jusqu\u2019\u00e0 une temp\u00e9rature sup\u00e9rieure \u00e0 la temp\u00e9rature de liquidus et faites-le fondre compl\u00e8tement, puis ajoutez progressivement les r\u00e9sidus d\u2019aluminium. Apr\u00e8s avoir ajout\u00e9 les d\u00e9chets d\u2019aluminium, lorsque la temp\u00e9rature de l\u2019aluminium fondu atteint la temp\u00e9rature de fusion pr\u00e9vue par le protocole exp\u00e9rimental, ajoutez le fondant pour aluminium recycl\u00e9 et remuez en continu. Lorsque vous constatez que la granulom\u00e9trie des scories passe de grosse \u00e0 fine, puis \u00e0 une poudre fine, retirez-les ;
\n3. Apr\u00e8s le d\u00e9carburage, lorsque la temp\u00e9rature de l'aluminium fondu est maintenue \u00e0 environ 720 \u2103, ajouter un agent d'affinage auxiliaire. D\u00e8s qu'il n'y a plus de bulles d'air et que les inclusions de scories remontent \u00e0 la surface, retirer rapidement ces inclusions ;
\n4. Couler l'\u00e9chantillon et le lingot d'aluminium imm\u00e9diatement apr\u00e8s avoir retir\u00e9 les scories.<\/p>\n
![\"\"](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/11\/1_0018_1-66.jpg\")
<\/p>\n
Les d\u00e9chets d'aluminium nationaux repr\u00e9sentent 89% du total des mati\u00e8res premi\u00e8res d'aluminium recycl\u00e9 en Chine, ce qui montre que l'industrie de la fabrication d'aluminium recycl\u00e9 devient de plus en plus autosuffisante. La capacit\u00e9 de production d\u2019aluminium secondaire de la Chine a d\u00e9pass\u00e9 les 14 millions de tonnes, repr\u00e9sentant environ 30% de la production mondiale d\u2019aluminium secondaire. Le pays a \u00e9galement d\u00e9pass\u00e9 le Japon pour devenir le premier producteur mondial d\u2019aluminium secondaire.<\/p>\n
L'ensemble du secteur conna\u00eet une \u00e9volution plus \u00e9quilibr\u00e9e. Bien que les grandes entreprises de recyclage soient devenues une source importante d'aluminium de r\u00e9cup\u00e9ration, cela t\u00e9moigne d'une concentration croissante du secteur.<\/p>\n
Au cours de la p\u00e9riode du \u201c 13e plan quinquennal \u201d, la production d'aluminium secondaire de mon pays a atteint 34,8 millions de tonnes, ce qui a permis de r\u00e9duire le volume d'extraction d'alumine de 139,2 millions de tonnes, d'\u00e9conomiser l'\u00e9quivalent de charbon standard, ainsi que 120 millions de tonnes d'eau et 770 millions de m\u00e8tres cubes d'eau. Les \u00e9missions de dioxyde de carbone et de d\u00e9chets solides ont \u00e9t\u00e9 r\u00e9duites respectivement de 380 millions par tonne et de 696 millions par tonne.<\/p>\n
Bien que l'industrie chinoise de l'aluminium de r\u00e9cup\u00e9ration ait r\u00e9alis\u00e9 d'importants progr\u00e8s par le pass\u00e9, il convient de noter que la part de l'aluminium de r\u00e9cup\u00e9ration dans la production totale d'aluminium de la Chine reste comparable \u00e0 celle des pays industrialis\u00e9s dans les ann\u00e9es 1980.<\/p>","protected":false},"excerpt":{"rendered":"
Refining flux is suitable for the recycled aluminum and aluminum alloy degassing and refining, which can effectively remove oxide inclusion and hydrogen from the molten…<\/p>","protected":false},"author":1,"featured_media":11140,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[1470,12797],"class_list":["post-11124","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-alloy-refining","tag-flux-for-recycled-aluminum"],"yoast_head":"\n
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