agent de raffinage<\/a> (tels que l'hexachloro\u00e9thane, le t\u00e9trachlorure de carbone, etc.) ou un agent d'affinage contenant du fluorure dans le four de maintien. Effectuer le traitement d'affinage. Cependant, lors de l'utilisation de chlore, de chlorure ou de fluorure, du chlore gazeux s'\u00e9chappera de la masse d'aluminium fondu ; du chlore gazeux et du fluorure d'hydrog\u00e8ne seront g\u00e9n\u00e9r\u00e9s apr\u00e8s la r\u00e9action avec les m\u00e9taux alcalins ; l'hexachloro\u00e9thane et le t\u00e9trachlorure, gaz\u00e9ifi\u00e9s par chauffage, produiront du gaz de charbon qui endommagera gravement le rev\u00eatement du four et r\u00e9duira sa dur\u00e9e de vie ; d'autre part, cela entra\u00eenera des risques professionnels pour les op\u00e9rateurs de production.<\/p>\n![\"\u00c9limination](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/09\/Alkali-Metals-Removal-1.jpg\")
<\/p>\n
Une m\u00e9thode respectueuse de l'environnement et efficace pour l'extraction des m\u00e9taux alcalins et alcalino-terreux est mise en \u0153uvre par r\u00e9action de substitution. Le principe de base consiste \u00e0 exploiter les propri\u00e9t\u00e9s chimiques des m\u00e9taux alcalins et alcalino-terreux, en fonction de leur ordre d'activit\u00e9, et \u00e0 ajouter d'autres sels m\u00e9talliques contenant des cations relativement inactifs, qui sont ensuite \u00e9limin\u00e9s par d'autres m\u00e9thodes physiques.<\/p>\n
\u00c0 l'heure actuelle, les alliages haute performance \u00e9voluent vers des dimensions de plus en plus importantes, et les exigences en mati\u00e8re de taille des billettes moul\u00e9es ne cessent d'augmenter. Les risques li\u00e9s \u00e0 la pr\u00e9sence de gaz r\u00e9siduels, d'impuret\u00e9s, de scories et de m\u00e9taux alcalins\/alcalino-terreux dans la masse fondue d'alliage d'aluminium lors du traitement des billettes moul\u00e9es seront d'autant plus mis en \u00e9vidence.<\/p>","protected":false},"excerpt":{"rendered":"
Alkali metals removal is also important in aluminum smelting and casting process. Alkali metals and alkaline earth metals in aluminum melt mainly come from alkali…<\/p>","protected":false},"author":1,"featured_media":5147,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5064","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\n
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