{"id":9928,"date":"2021-08-17T03:47:25","date_gmt":"2021-08-17T03:47:25","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9928"},"modified":"2021-08-17T03:47:25","modified_gmt":"2021-08-17T03:47:25","slug":"gas-purification-process","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/gas-purification-process\/","title":{"rendered":"Processo de purifica\u00e7\u00e3o de g\u00e1s"},"content":{"rendered":"<p>O processo de remo\u00e7\u00e3o de hidrog\u00eanio \u00e9 o processo de purifica\u00e7\u00e3o do g\u00e1s. Adiciona-se artificialmente gases inertes (Ar, N\u2082, etc.) ou gases ativos que s\u00e3o insol\u00faveis na massa fundida de alum\u00ednio (Cl\u2082, C\u2082Cl\u2084, etc.) \u00e0 massa fundida de alum\u00ednio, de modo que o hidrog\u00eanio presente na massa fundida seja absorvido por essas bolhas de g\u00e1s. As bolhas sobem e escapam da massa fundida de alum\u00ednio.<\/p>\n<p><strong>O processo de purifica\u00e7\u00e3o de g\u00e1s pode ser dividido nas seguintes etapas:<\/strong><\/p>\n<p>Por meio da convec\u00e7\u00e3o e da difus\u00e3o, os \u00e1tomos de hidrog\u00eanio presentes no alum\u00ednio fundido migram para a interface g\u00e1s-l\u00edquido entre o alum\u00ednio fundido e as bolhas adicionadas.<br \/>\nO \u00e1tomo de hidrog\u00eanio passa do estado dissolvido para o estado adsorvido.<br \/>\nOs \u00e1tomos de hidrog\u00eanio adsorvidos na interface g\u00e1s-l\u00edquido interagem entre si para formar mol\u00e9culas de hidrog\u00eanio.<br \/>\nAs mol\u00e9culas de hidrog\u00eanio se desorvem da interface g\u00e1s-l\u00edquido.<br \/>\nAs mol\u00e9culas se difundem para a fase gasosa e sobem junto com as bolhas de g\u00e1s adicionadas, a fim de escapar do alum\u00ednio fundido.<\/p>\n<p><strong>A maneira b\u00e1sica de melhorar o efeito de purifica\u00e7\u00e3o do g\u00e1s \u00e9:<\/strong><\/p>\n<p>\u00c9 poss\u00edvel aumentar o n\u00famero de bolhas adicionadas para aumentar a \u00e1rea de contato efetiva entre o alum\u00ednio fundido e as bolhas.<br \/>\nReduzir ao m\u00e1ximo o di\u00e2metro das bolhas introduzidas e aumentar a \u00e1rea de contato entre o g\u00e1s e o alum\u00ednio fundido.<br \/>\nAumentar ao m\u00e1ximo a dist\u00e2ncia de flutua\u00e7\u00e3o das bolhas adicionadas ao alum\u00ednio fundido, aumentar o tempo de perman\u00eancia das bolhas no alum\u00ednio fundido, ou seja, aumentar o tempo do processo de purifica\u00e7\u00e3o do g\u00e1s do alum\u00ednio fundido.<\/p>\n<p>Al\u00e9m dessas tr\u00eas formas b\u00e1sicas, existem outras mais avan\u00e7adas, como MINT, SNIF, FILD, <a href=\"http:\/\/www.alalloycasting.com\/pt\/online-degassing\/\">desgaseifica\u00e7\u00e3o online<\/a>, e tecnologia de purifica\u00e7\u00e3o. O princ\u00edpio b\u00e1sico consiste em utilizar a rota\u00e7\u00e3o mec\u00e2nica do bico de sopro e o efeito de sopro do arg\u00f4nio ou do nitrog\u00eanio para fragmentar o g\u00e1s inerte introduzido no alum\u00ednio fundido em pequenos grupos de bolhas, que sobem lentamente do alum\u00ednio fundido, aumentando assim significativamente a \u00e1rea de contato entre o g\u00e1s e o l\u00edquido, prolongando o tempo de a\u00e7\u00e3o e melhorando a efici\u00eancia da desgaseifica\u00e7\u00e3o. Ao mesmo tempo, devido \u00e0 forte agita\u00e7\u00e3o do cabe\u00e7ote de sopro, as pequenas inclus\u00f5es s\u00e3o reunidas em aglomerados maiores, e o denso conjunto de pequenas bolhas de ar tem alta probabilidade de reter esc\u00f3ria, melhorando assim tamb\u00e9m a efici\u00eancia da remo\u00e7\u00e3o de esc\u00f3ria.<\/p>","protected":false},"excerpt":{"rendered":"<p>The hydrogen removal process is the gas purification process. Artificially add inert gases (Ar, N2, etc.) or active gases that are insoluble in the aluminum&hellip;<\/p>","protected":false},"author":1,"featured_media":9929,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12364,4313],"class_list":["post-9928","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-gas-purification-process-in-aluminum-melt","tag-metal-degassing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gas Purification Process in Aluminum Melt, Metal Degassing<\/title>\n<meta name=\"description\" content=\"The hydrogen removal process is the gas purification process. 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