{"id":6966,"date":"2020-12-11T05:59:31","date_gmt":"2020-12-11T05:59:31","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6966"},"modified":"2020-12-11T05:59:31","modified_gmt":"2020-12-11T05:59:31","slug":"aluminum-recycling","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-recycling\/","title":{"rendered":"Reciclaje de aluminio"},"content":{"rendered":"

Debido a sus excelentes propiedades mec\u00e1nicas, facilidad de procesamiento y reciclabilidad, el aluminio y las aleaciones de aluminio se utilizan ampliamente en diversos \u00e1mbitos. Las aleaciones de aluminio que se producen a partir de residuos y llegan al final de su vida \u00fatil se denominan colectivamente \u00abchatarra de aluminio\u00bb, lo que incluye materiales aeroespaciales, puertas de aluminio y otros residuos que contienen aluminio. Con el creciente inter\u00e9s por el ahorro energ\u00e9tico, la reducci\u00f3n de emisiones y el consumo de recursos, la industria del reciclaje del aluminio se est\u00e1 desarrollando de forma constante y est\u00e1 cobrando cada vez m\u00e1s importancia.<\/p>\n

Sin embargo, existen problemas de degradaci\u00f3n y de bajo valor a\u00f1adido. Las estad\u00edsticas muestran que cada a\u00f1o 700 000 toneladas de latas de aluminio se convierten en residuos que reducen la calidad de puertas y ventanas, lo que da lugar a un bajo valor a\u00f1adido en la industria del reciclaje. Aunque la industria cuenta con diversas fuentes, la mayor\u00eda de ellas solo proporcionan residuos de baja calidad o incluso contaminados. Por lo tanto, el control de la microestructura es necesario e importante para obtener aluminio secundario de alta calidad.<\/p>\n

Para controlar eficazmente la microestructura, se utilizan m\u00e9todos como el refinado, la modificaci\u00f3n y la deformaci\u00f3n. El proceso de eliminaci\u00f3n de impurezas y refinado en varias etapas que se emplea para recuperar el aluminio incluye los siguientes pasos: pretratamiento de cribado, secado, precalentamiento, fundici\u00f3n, refinado y eliminaci\u00f3n de sustancias incrustadas en los residuos. Mediante el uso de modificadores de tierras raras, agentes de refinado y gases inertes, se pueden mejorar las propiedades mec\u00e1nicas y la pureza de las aleaciones fundidas. Sin embargo, el gas inerte utilizado fue el nitr\u00f3geno, lo que dio lugar a la formaci\u00f3n de nitruro de aluminio. Adem\u00e1s, no se describe ning\u00fan m\u00e9todo para controlar la microestructura, y el aluminio deformado no contiene ninguna aleaci\u00f3n.<\/p>\n

\"Reciclaje<\/p>\n

La alta eficiencia y el ahorro energ\u00e9tico proceso de refinado<\/a> incluye los siguientes pasos: clasificaci\u00f3n previa, fundici\u00f3n, escorificaci\u00f3n y separaci\u00f3n de las cenizas calientes. La invenci\u00f3n no utiliza el m\u00e9todo de reciclaje tradicional, sino que reutiliza los residuos mediante un m\u00e9todo de un solo paso, y tritura y refina la escoria para reducir el contenido de aluminio en la misma. Sin embargo, la presente invenci\u00f3n no describe un m\u00e9todo de desgasificaci\u00f3n y eliminaci\u00f3n de impurezas de aleaciones fundidas ni de lingotes y perfiles de aleaci\u00f3n de aluminio con microestructura controlada.<\/p>\n

Proceso de refinamiento de grano grueso de la aleaci\u00f3n de Al-Si: este proceso utiliza una combinaci\u00f3n de agitadores de engranajes para agitar la aleaci\u00f3n de aluminio y silicio en estado semis\u00f3lido y hacerla girar a alta velocidad, de modo que las dendritas gruesas se rompan y se refinen hasta obtener estructuras normales. Los granos de la aleaci\u00f3n de Al-Si pueden refinarse a\u00fan m\u00e1s mediante extrusi\u00f3n. Sin embargo, la presente invenci\u00f3n no implica ninguna modificaci\u00f3n durante el curado, la desgasificaci\u00f3n, la eliminaci\u00f3n de impurezas, la deformaci\u00f3n ni el crecimiento de los granos.<\/p>\n

En resumen, el m\u00e9todo para controlar la microestructura de las piezas en bruto y los perfiles de aleaci\u00f3n de aluminio reciclado incluye los siguientes pasos: reducir o evitar la formaci\u00f3n de nitruro de aluminio, realizar una desgasificaci\u00f3n eficaz, eliminar las impurezas y modificar la microestructura. El control de la microestructura determina la calidad de los productos de aluminio reciclado.<\/p>","protected":false},"excerpt":{"rendered":"

Due to excellent mechanical properties, processability and recyclability, aluminum and aluminum alloys are widely used in various fields. Aluminum alloys that are produced from waste…<\/p>","protected":false},"author":1,"featured_media":6968,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminum Recycling Processby Microstructure Control<\/title>\n<meta name=\"description\" content=\"The control of the microstructure determines the quality of aluminum recycling products. 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