{"id":10597,"date":"2021-10-14T03:45:48","date_gmt":"2021-10-14T03:45:48","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10597"},"modified":"2021-10-14T03:45:48","modified_gmt":"2021-10-14T03:45:48","slug":"inert-gas-metal-refining","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/inert-gas-metal-refining\/","title":{"rendered":"Refinado de metales en atm\u00f3sfera de gas inerte"},"content":{"rendered":"<p>El refinado de aluminio con gas inerte es un m\u00e9todo de refinado en el que se inyecta gas inerte de forma continua en el aluminio fundido, y las impurezas oxidadas y el hidr\u00f3geno se eliminan de la superficie del l\u00edquido durante el proceso de flotaci\u00f3n de las burbujas.<\/p>\n<p>La raz\u00f3n por la que se lleva a cabo la desgasificaci\u00f3n met\u00e1lica con gas inerte es que el gas inerte que se inyecta en la masa fundida no contiene hidr\u00f3geno, por lo que su presi\u00f3n parcial de hidr\u00f3geno es cero, mientras que la presi\u00f3n parcial de hidr\u00f3geno en la masa fundida cerca de las burbujas es muy superior a cero. Por lo tanto, existe una diferencia de presi\u00f3n parcial de hidr\u00f3geno entre el interior y el exterior de la burbuja. Bajo el efecto de esta diferencia de presi\u00f3n parcial, los \u00e1tomos de hidr\u00f3geno del ba\u00f1o fundido se difunden hacia la interfaz de la burbuja y se recombinan en el interior de esta en dicha interfaz. Este proceso de desgasificaci\u00f3n no cesar\u00e1 hasta que la presi\u00f3n parcial de hidr\u00f3geno dentro y fuera de la burbuja sea igual.<\/p>\n<p>El hidr\u00f3geno que entra en la burbuja se escapa a la atm\u00f3sfera a medida que esta asciende. Adem\u00e1s, durante el proceso de flotaci\u00f3n de las burbujas, las burbujas de hidr\u00f3geno macromoleculares suspendidas en la masa fundida y el gas presente en las inclusiones tambi\u00e9n pueden ser expulsados de la superficie del l\u00edquido mediante la flotaci\u00f3n, con lo que se logra el objetivo de la desgasificaci\u00f3n.<\/p>\n<p>El motivo por el que se utiliza el refinado de metales con gas inerte es que las burbujas de gas inerte inyectadas pueden absorber las inclusiones oxidadas presentes en la masa fundida y sacarlas de la superficie del l\u00edquido durante el proceso de flotaci\u00f3n. Este m\u00e9todo es el denominado \u00abm\u00e9todo de eliminaci\u00f3n de escoria por flotaci\u00f3n\u00bb.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10599\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/10\/Aluminum-Fluxes-Refining.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/10\/Aluminum-Fluxes-Refining.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/10\/Aluminum-Fluxes-Refining-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Una vez que la burbuja de gas inerte adsorbe las inclusiones oxidadas presentes en la masa fundida, se puede reducir la energ\u00eda libre superficial total del sistema. Por lo tanto, esta adsorci\u00f3n puede producirse de forma autom\u00e1tica. Cuanto menor sea la tensi\u00f3n superficial entre el gas inerte y las inclusiones, y cuanto mayor sea la tensi\u00f3n superficial entre el material fundido y el gas inerte, as\u00ed como la tensi\u00f3n de interfaz entre el material fundido y las inclusiones, mayor ser\u00e1 la capacidad de este gas inerte para eliminar la escoria.<\/p>\n<p>Cuando se utiliza gas inerte para el refinado, el <a href=\"http:\/\/www.alalloycasting.com\/es\/covering-flux\/\">flujo de recubrimiento<\/a> debe espolvorearse uniformemente sobre la superficie del l\u00edquido. Esto se debe a que, una vez que las burbujas de gas inerte han sacado las inclusiones de la superficie del l\u00edquido, si en ese momento hay una capa de fundente sobre la superficie del l\u00edquido, las inclusiones se introducir\u00e1n en el fundente y se convertir\u00e1n en escoria, que es f\u00e1cil de extraer. De lo contrario, las inclusiones m\u00e1s densas volver\u00e1n a caer en el aluminio fundido, y las menos densas formar\u00e1n una espuma en la superficie del l\u00edquido, que resulta dif\u00edcil de separar del aluminio fundido. Al extraer estas espumas, se sacar\u00e1 una gran cantidad de metal fundido, lo que aumenta la p\u00e9rdida de metal.<\/p>","protected":false},"excerpt":{"rendered":"<p>Inert gas metal refining is a refining method in which inert gas is continuously blown into the aluminum melt, and oxidized impurities and hydrogen are&hellip;<\/p>","protected":false},"author":1,"featured_media":10598,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Inert Gas Metal Refining, Molten Aluminum Degassing Refining<\/title>\n<meta name=\"description\" content=\"Inert gas metal refining is a refining method, it can remove the oxidized impurities 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