{"id":2701,"date":"2020-07-08T10:02:17","date_gmt":"2020-07-08T10:02:17","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=2701"},"modified":"2020-10-14T08:21:19","modified_gmt":"2020-10-14T08:21:19","slug":"extraction-and-refining-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/extraction-and-refining-aluminum\/","title":{"rendered":"Extracci\u00f3n y refinado del aluminio"},"content":{"rendered":"

Los productos de aluminio tienen un amplio uso. Para obtener productos de aluminio puro, las fundiciones de aluminio deben someter el metal a un proceso de extracci\u00f3n y refinado. Los yacimientos conocidos de bauxita pueden abastecer al mundo de aluminio durante cientos de a\u00f1os, manteniendo los niveles de producci\u00f3n actuales.<\/p>\n

Cuando se agoten los yacimientos de bauxita de alta ley, quedar\u00e1n por explotar importantes reservas de minerales secundarios: yacimientos de laterita en el noroeste de Estados Unidos y en Australia, anortosita en el oeste de Estados Unidos, apatita y alunita en Europa, y caolinita en el sureste de Estados Unidos. Tambi\u00e9n existen otras fuentes de al\u00famina distintas de la bauxita: arcillas de al\u00famina, dawsonita, lutitas aluminosas, rocas \u00edgneas y los minerales saprolita y silimanita. En Rusia, la al\u00famina se refina a partir de minerales no baux\u00edticos, concretamente de sienita nefel\u00ednica y alunita. Los vastos yacimientos de bauxita en Australia, Guinea e Indonesia han tendido a posponer el inter\u00e9s por los minerales secundarios en otros lugares.<\/p>\n

Aproximadamente el 90 % de toda la bauxita extra\u00edda se refina para obtener al\u00famina, que posteriormente se funde para producir aluminio. El 10 % restante se utiliza en otras aplicaciones, como abrasivos, materiales refractarios y agentes de soporte en la extracci\u00f3n de petr\u00f3leo crudo. Aproximadamente cuatro toneladas de bauxita de alta ley producen dos toneladas de al\u00famina, a partir de las cuales se obtiene una tonelada de aluminio.<\/p>\n

Extracci\u00f3n y refinado del aluminio<\/strong><\/p>\n

La producci\u00f3n de aluminio a partir de la bauxita es un proceso que consta de dos etapas: el refinado de la bauxita para obtener al\u00famina y la fundici\u00f3n de la al\u00famina para producir aluminio. La bauxita contiene diversas impurezas, entre ellas \u00f3xido de hierro, s\u00edlice y di\u00f3xido de titanio. Si estas impurezas no se eliminan durante el refinado, se alear\u00e1n con el metal y lo contaminar\u00e1n durante el proceso de fundici\u00f3n. Por lo tanto, el mineral debe tratarse para eliminar estas impurezas. La al\u00famina purificada suele contener entre un 0,5 % y un 1 % de agua, entre un 0,3 % y un 0,5 % de sosa y menos del 0,1 % de otros \u00f3xidos. El proceso Bayer, con diversas modificaciones, es el m\u00e9todo m\u00e1s utilizado para la producci\u00f3n de al\u00famina, y todo el aluminio se produce a partir de la al\u00famina mediante el proceso electrol\u00edtico de Hall-H\u00e9roult.<\/p>\n

\"Extracci\u00f3n<\/p>\n

Tras la extracci\u00f3n del aluminio de la al\u00famina, el aluminio primario debe someterse a un proceso de refinado. AdTech ofrece en l\u00ednea unidad de desgasificaci\u00f3n<\/a><\/strong>, Unidad de filtrado CFF<\/a><\/strong>, flujos<\/strong><\/a> para el refinado del aluminio l\u00edquido. La alta precisi\u00f3n\u00a0Unidades de purificaci\u00f3n de aluminio fundido en l\u00ednea<\/strong><\/a> Se utilizan principalmente en la industria de la fundici\u00f3n de aleaciones de aluminio. Son especialmente adecuados para los sectores de la electr\u00f3nica, el mobiliario, la energ\u00eda solar, la construcci\u00f3n, la automoci\u00f3n, el transporte ferroviario de alta velocidad, la aviaci\u00f3n y la industria militar. Los equipos de purificaci\u00f3n de aluminio fundido se instalan entre el horno de fundici\u00f3n y la m\u00e1quina de fundici\u00f3n, y permiten desgasificar y filtrar las impurezas.<\/p>\n

La unidad de desgasificaci\u00f3n en l\u00ednea tiene una doble funci\u00f3n: tratamiento y calentamiento. Permite eliminar el hidr\u00f3geno (H) y las escorias del aluminio fundido. De lo contrario, estos elementos afectar\u00edan a la calidad y a las propiedades mec\u00e1nicas de la aleaci\u00f3n. La unidad de desgasificaci\u00f3n en l\u00ednea tiene una doble funci\u00f3n: tratamiento y calentamiento. Proporciona una purificaci\u00f3n de alta precisi\u00f3n del aluminio fundido.<\/p>\n

El\u00a0equipo de filtrado de placas<\/a>\u00a0Es adecuado para filtrar las inclusiones y las part\u00edculas peque\u00f1as presentes en el aluminio fundido. Incorpora la nueva tecnolog\u00eda de s\u00edlice fundida de alta pureza y tiene una larga vida \u00fatil. Este equipo de filtrado sustituye a los equipos de filtrado con tubos cer\u00e1micos y a los equipos de filtrado con placas convencionales. Esta unidad de filtrado con placas puede filtrar eficazmente las impurezas de tama\u00f1o microm\u00e9trico.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminum products are widely used. To obtain pure aluminum products, aluminum foundry must go through the extraction and refining aluminum process. Known deposits of bauxite…<\/p>","protected":false},"author":1,"featured_media":5566,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[809,810],"class_list":["post-2701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-extraction-and-refining-aluminum","tag-molten-aluminum-purifying"],"yoast_head":"\nExtraction And Refining Aluminum,Molten Aluminum Purifying<\/title>\n<meta name=\"description\" content=\"To obtain pure aluminum products, the most aluminum foundry must go through the extraction and refining aluminum process.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/es\/extraction-and-refining-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" 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