{"id":6681,"date":"2020-11-25T08:23:36","date_gmt":"2020-11-25T08:23:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6681"},"modified":"2020-12-01T01:57:11","modified_gmt":"2020-12-01T01:57:11","slug":"molten-aluminum-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/molten-aluminum-purification\/","title":{"rendered":"Purificaci\u00f3n del aluminio fundido"},"content":{"rendered":"

Ya sea mediante la eliminaci\u00f3n de escorias de fundente u otros m\u00e9todos de refinado, las part\u00edculas de inclusiones de \u00f3xido suspendidas en la masa fundida no pueden separarse por completo, especialmente las inclusiones de al\u00famina en suspensi\u00f3n, que son m\u00e1s dif\u00edciles de eliminar. Adem\u00e1s, durante el proceso de trasvase del aluminio fundido, es inevitable que se produzca una reoxidaci\u00f3n y la generaci\u00f3n de gas. Por lo tanto, con el fin de mejorar a\u00fan m\u00e1s la eficacia del tratamiento de purificaci\u00f3n y garantizar la estabilidad y la fiabilidad de la calidad del aluminio fundido, es necesario utilizar un m\u00e9todo de purificaci\u00f3n en l\u00ednea del aluminio fundido para eliminar el hidr\u00f3geno y las inclusiones presentes en la masa fundida.<\/p>\n

En comparaci\u00f3n con fundente para fundici\u00f3n de aluminio<\/a> En el procesamiento en horno, el tratamiento de purificaci\u00f3n en l\u00ednea del aluminio fundido ofrece un mejor efecto de purificaci\u00f3n y evita la contaminaci\u00f3n secundaria de la masa fundida. En combinaci\u00f3n con la colada continua y la laminaci\u00f3n, permite llevar a cabo una producci\u00f3n continua y autom\u00e1tica de colada y laminaci\u00f3n. Existen numerosos m\u00e9todos de tratamiento en l\u00ednea. Seg\u00fan sus funciones principales, pueden clasificarse en desgasificaci\u00f3n y escorificaci\u00f3n. La filtraci\u00f3n consiste en hacer pasar el metal fundido a trav\u00e9s de un filtro fabricado con materiales neutros o activos. Las inclusiones en suspensi\u00f3n en el metal fundido quedan retenidas mec\u00e1nicamente por el filtro o interact\u00faan qu\u00edmicamente con el material del filtro, de modo que las inclusiones se eliminan del metal fundido.<\/p>\n

Filtro de espuma cer\u00e1mica<\/a> Es un nuevo tipo de material filtrante desarrollado en los \u00faltimos a\u00f1os. Por lo general, se fabrica en forma de filtro con un grosor de 50 mm y una longitud y anchura de entre 200 y 600 mm, y su porosidad suele ser de entre 10 y 60 ppi. Su funci\u00f3n es eliminar los \u00f3xidos y las part\u00edculas no met\u00e1licas de la aleaci\u00f3n de aluminio. El filtro se coloca entre el horno est\u00e1tico y la planta de fundici\u00f3n y laminaci\u00f3n, y en el sistema de filtrado, tras el unidad de desgasificaci\u00f3n en l\u00ednea<\/a>. Cuando el aluminio l\u00edquido atraviesa el canal del filtro, las inclusiones son adsorbidas, retenidas y capturadas por los poros debido a los efectos combinados de la retenci\u00f3n por gravedad y la adsorci\u00f3n. La precisi\u00f3n de filtraci\u00f3n del filtro est\u00e1 relacionada con su espesor y porosidad. Se caracteriza por su facilidad de uso, su buen efecto de filtraci\u00f3n y por no requerir una altura de presi\u00f3n elevada para la filtraci\u00f3n.<\/p>\n

\"Filtro<\/p>\n

En el m\u00e9todo de flotaci\u00f3n con gas inerte rotativo, el gas purificado se pulveriza a trav\u00e9s de la boquilla giratoria y el impulsor, que gira a alta velocidad, lo divide en innumerables burbujas min\u00fasculas que se distribuyen uniformemente en la masa fundida, ampliando as\u00ed la superficie de contacto entre el gas y el l\u00edquido. Las diminutas burbujas giran y ascienden en la masa fundida, lo que prolonga eficazmente el tiempo de permanencia de las burbujas en ella. Al mismo tiempo, el fuerte efecto de agitaci\u00f3n de la boquilla giratoria acelera la renovaci\u00f3n de la interfaz gas-l\u00edquido entre las fases gaseosa y l\u00edquida, mejora eficazmente las condiciones de transferencia de masa y refuerza el proceso de difusi\u00f3n, de modo que las peque\u00f1as burbujas puedan desempe\u00f1ar plenamente su funci\u00f3n.<\/p>","protected":false},"excerpt":{"rendered":"

Whether it is flux slag removal or other refining methods, the oxide inclusion particles suspended in the melt cannot be separated clean, especially the suspended…<\/p>","protected":false},"author":1,"featured_media":6682,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[688],"class_list":["post-6681","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-molten-aluminum-purification"],"yoast_head":"\nMolten Aluminum Purification | Online Degassing and CFF Filtering<\/title>\n<meta name=\"description\" content=\"It is necessary to use online molten aluminum purification method to remove the hydrogen and inclusions: online degassing and CFF filtering.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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