{"id":4261,"date":"2020-08-28T02:41:04","date_gmt":"2020-08-28T02:41:04","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4261"},"modified":"2020-08-28T02:41:04","modified_gmt":"2020-08-28T02:41:04","slug":"molten-aluminium-refining","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/molten-aluminium-refining\/","title":{"rendered":"Refinado de aluminio fundido"},"content":{"rendered":"<p>El refinado del aluminio fundido suele imponer requisitos estrictos en cuanto a la estructura interna, la calidad, la composici\u00f3n qu\u00edmica y las propiedades mec\u00e1nicas del aluminio, especialmente en lo que respecta al tama\u00f1o del grano, los poros, las inclusiones de escoria y las grietas. El control es muy estricto, y las caracter\u00edsticas del aluminio fundido tras la electr\u00f3lisis mencionadas anteriormente no pueden cumplir los requisitos para la producci\u00f3n de piezas brutas de aluminio, por lo que, antes de la fundici\u00f3n, es necesario llevar a cabo una serie de operaciones de procesamiento, como el enfriamiento, el ajuste de la composici\u00f3n, el refinado, el mantenimiento del calor y el reposo.<\/p>\n<p>Los beneficios econ\u00f3micos que se obtienen al utilizar aluminio l\u00edquido electrol\u00edtico para producir directamente piezas brutas de aluminio se plasman principalmente en dos aspectos: el ahorro energ\u00e9tico y la reducci\u00f3n de la p\u00e9rdida de aluminio. En primer lugar, se pueden omitir los dos procesos de colada del aluminio fundido en lingotes de aluminio y de refundici\u00f3n y calentamiento de dichos lingotes. Esto reduce la p\u00e9rdida de aluminio de 0,4%-0,5% que se produce al fundir el lingote de aluminio a partir del aluminio fundido, as\u00ed como la p\u00e9rdida de aluminio de 2%-4% que se produce en el proceso de refundici\u00f3n secundaria del lingote de aluminio. Por otra parte, cuando se refunde un lingote de aluminio, calentar 1 t de lingote de aluminio desde la temperatura ambiente hasta la temperatura de fundici\u00f3n de 750 \u2103 requiere, en teor\u00eda, unos 1,21\u00d710^9 J, lo que equivale a una energ\u00eda el\u00e9ctrica de 337 kWh y 30 kg de fuel\u00f3leo. Se puede observar que el uso directo de aluminio l\u00edquido electrol\u00edtico para fabricar perfiles de aluminio de baja calidad puede reducir el consumo de energ\u00eda.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4263\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Molten-Aluminium-Refining.jpg\" alt=\"Refinado de aluminio fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Molten-Aluminium-Refining.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Molten-Aluminium-Refining-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>En el proceso de electr\u00f3lisis de la al\u00famina, es inevitable que el aluminio fundido contenga gases e impurezas. Por lo tanto, el refinado del aluminio fundido es una forma de garantizar la calidad de los productos de aluminio.<\/p>\n<p>Tras el trasvase del aluminio l\u00edquido, el enfriamiento, el ajuste de la composici\u00f3n, el refinado, la escorificaci\u00f3n, el reposo, etc., y una vez enterrado y sometido a agitaci\u00f3n, el contenido de hidr\u00f3geno en el aluminio l\u00edquido puede reducirse a 0,15 m\/100 gAl, y la cantidad de inclusiones de escoria oxidada es inferior a 0,051 TP3T. El contenido de Na se reduce a t(Na) 0,00011 TP3T o menos. Tras realizar an\u00e1lisis y ensayos de muestreo, y una vez superada la prueba, espolvorear el <a href=\"http:\/\/www.alalloycasting.com\/es\/fluxes\/\">agente de recubrimiento<\/a> sobre la superficie del aluminio fundido y d\u00e9jalo reposar entre 20 y 30 minutos antes de comenzar a fundir.<\/p>","protected":false},"excerpt":{"rendered":"<p>Molten Aluminium Refining usually has strict requirements on the internal structure, quality, chemical composition, and mechanical properties of aluminium, especially in terms of grain size,&hellip;<\/p>","protected":false},"author":1,"featured_media":4262,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4623],"class_list":["post-4261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-molten-aluminium-refining"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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