{"id":9872,"date":"2021-08-12T03:23:54","date_gmt":"2021-08-12T03:23:54","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9872"},"modified":"2021-08-12T03:23:54","modified_gmt":"2021-08-12T03:23:54","slug":"foam-ceramic-plate-filtering","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/foam-ceramic-plate-filtering\/","title":{"rendered":"Filtraci\u00f3n mediante placas cer\u00e1micas de espuma"},"content":{"rendered":"

El filtrado mediante placas cer\u00e1micas de espuma es el \u00faltimo proceso del tratamiento de purificaci\u00f3n del aluminio fundido. Es especialmente importante optar por la segunda generaci\u00f3n de placas filtrantes cer\u00e1micas de espuma. Cabe destacar especialmente la contaminaci\u00f3n secundaria del aluminio fundido que puede producirse despu\u00e9s de que este salga de la caja de filtrado para solidificarse y tomar forma. En este proceso, se deben utilizar canaletas, cajas frontales, placas de distribuci\u00f3n y tapas superiores resistentes al calor, fabricadas en aluminio antiadherente, de alta resistencia y larga duraci\u00f3n, con buen aislamiento t\u00e9rmico, y eliminar a tiempo las posibles fuentes de contaminaci\u00f3n para garantizar la limpieza del aluminio fundido. Esto no se puede pasar por alto.<\/p>\n

El mecanismo de filtraci\u00f3n y purificaci\u00f3n del aluminio fundido mediante placas cer\u00e1micas de espuma se describe generalmente como un mecanismo de interceptaci\u00f3n por difusi\u00f3n y por colisi\u00f3n inercial o de cribado, as\u00ed como un mecanismo de filtraci\u00f3n por capa de sedimentaci\u00f3n y por lecho profundo. El proceso de filtraci\u00f3n y purificaci\u00f3n del aluminio fundido mediante placas filtrantes de cer\u00e1mica celular<\/a> es muy complicado, ya que se trata de un proceso complejo que implica la qu\u00edmica f\u00edsica a altas temperaturas y la cin\u00e9tica metal\u00fargica.<\/p>\n

\"\"<\/p>\n

(1) Mediante la filtraci\u00f3n mec\u00e1nica \u2014como la interceptaci\u00f3n por colisi\u00f3n, la interceptaci\u00f3n por difusi\u00f3n, la fricci\u00f3n, la sedimentaci\u00f3n, etc.\u2014, la eficacia de la filtraci\u00f3n es proporcional a la abertura de malla del panel cer\u00e1mico de espuma. Cuanto m\u00e1s peque\u00f1a sea la malla, mayor ser\u00e1 la capacidad para interceptar part\u00edculas peque\u00f1as.<\/p>\n

(2) Efecto de capa sedimentaria o de torta de filtraci\u00f3n. A medida que se depositan part\u00edculas de impurezas en la masa fundida, aumenta la capacidad de la pared de soporte de malla de la placa filtrante para capturar dichas part\u00edculas.<\/p>\n

(3) La superficie rugosa formada por los huecos en la superficie del soporte de la malla aumenta la superficie de contacto entre el flujo de aluminio fundido y la superficie cer\u00e1mica, y favorece que el flujo de part\u00edculas de impurezas en el flujo de aluminio fundido sea m\u00e1s desordenado, lo que facilita la captura y la deposici\u00f3n de part\u00edculas s\u00f3lidas.<\/p>\n

(4) Debido a las grietas y poros microsc\u00f3picos presentes en la superficie del cuerpo de soporte de la red, se deposita previamente un fundente de fluoruro con una fuerte afinidad por las part\u00edculas de Al\u2082O\u2083, lo que favorece la formaci\u00f3n de una capa de filtro completa y una fuerte adsorci\u00f3n qu\u00edmica, de modo que se refuerza a\u00fan m\u00e1s la capacidad de atrapar y retener las part\u00edculas de la fase de impurezas.<\/p>\n

(5) En el proceso de fundici\u00f3n de metales, y debido al efecto del campo de temperaturas en el proceso de transferencia de calor, es inevitable que se forme una diferencia de concentraci\u00f3n del soluto de la aleaci\u00f3n. La redistribuci\u00f3n y la integraci\u00f3n del metal fundido tambi\u00e9n constituyen un buen proceso de aleaci\u00f3n. Algunas fases y compuestos met\u00e1licos de alto punto de fusi\u00f3n se reagrupan y crecen, y las peque\u00f1as fases de impurezas pueden quedar retenidas mediante filtraci\u00f3n una vez que se han agrupado y crecido. El efecto de la filtraci\u00f3n en dos etapas resulta especialmente evidente.<\/p>","protected":false},"excerpt":{"rendered":"

Foam ceramic plate filtering is the last process in the purification treatment of aluminum melt. It is particularly important to choose the second generation of…<\/p>","protected":false},"author":1,"featured_media":9873,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[21,8884,12348,12349],"class_list":["post-9872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter","tag-ceramic-foam-filter","tag-filtering-mechanism","tag-foam-ceramic-plate","tag-purifying-aluminum-melt"],"yoast_head":"\nFoam Ceramic Plate Filtering and Purifying Aluminum Melt<\/title>\n<meta name=\"description\" content=\"The mechanism of foam ceramic plate filtering and purifying aluminum melt is described as diffusion and inertial collision interception...\" \/>\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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