agente refinador<\/a> (como o hexacloroetano, o tetracloreto de carbono, etc.) ou um agente de refino contendo fl\u00faor no forno de reten\u00e7\u00e3o. Realizar o tratamento de refino. No entanto, durante o processo de utiliza\u00e7\u00e3o de cloro, cloreto ou fl\u00faor, haver\u00e1 g\u00e1s cloro se liberando do alum\u00ednio fundido, g\u00e1s cloro e fluoreto de hidrog\u00eanio gerados ap\u00f3s a rea\u00e7\u00e3o com metais alcalinos, al\u00e9m do g\u00e1s hexacloroetano e do tetracloreto carbonizado pelo aquecimento. A produ\u00e7\u00e3o de g\u00e1s carb\u00f4nico danificar\u00e1 gravemente o revestimento do forno e reduzir\u00e1 sua vida \u00fatil; em segundo lugar, isso causar\u00e1 riscos ocupacionais aos operadores de produ\u00e7\u00e3o.<\/p>\n![\"Remo\u00e7\u00e3o](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/09\/Alkali-Metals-Removal-1.jpg\")
<\/p>\n
Um m\u00e9todo ecol\u00f3gico e eficiente para a extra\u00e7\u00e3o de metais alcalinos e alcalino-terrosos \u00e9 obtido por meio de uma rea\u00e7\u00e3o de substitui\u00e7\u00e3o. O princ\u00edpio b\u00e1sico consiste em aproveitar as caracter\u00edsticas da atividade qu\u00edmica dos metais alcalinos e alcalino-terrosos, de acordo com a ordem de atividade dos metais, e adicionar sais de outros metais com c\u00e1tions relativamente inativos. Em seguida, esses sais s\u00e3o removidos por outros m\u00e9todos f\u00edsicos.<\/p>\n
Atualmente, as ligas de alto desempenho est\u00e3o evoluindo no sentido de especifica\u00e7\u00f5es de grandes dimens\u00f5es, e os requisitos de tamanho dos lingotes fundidos est\u00e3o aumentando gradualmente. Os riscos decorrentes da presen\u00e7a de g\u00e1s residual, impurezas, esc\u00f3ria e metais alcalinos\/metais alcalino-terrosos na massa fundida de liga de alum\u00ednio durante o processamento dos lingotes fundidos ser\u00e3o ainda mais destacados.<\/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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