fundentes para fundici\u00f3n de aluminio<\/a> son el cloruro y el fluoruro. El fundente de cloruro es capaz de humedecer el \u00f3xido y fundirlo bien, y a\u00f1adir fluoruro al fundente de cloruro puede mejorar la capacidad de refinado de este.<\/p>\nLa raz\u00f3n por la que el fluoruro mejora la capacidad de refinado es que aumenta la tensi\u00f3n interfacial entre el fundente y el metal fundido, y potencia la adsorci\u00f3n del fundente al \u00f3xido; adem\u00e1s, el fluoruro presenta una mayor reactividad con el aluminio fundido. En la interfaz del \u00f3xido se forman productos de reacci\u00f3n tensioactivos, como el fluoruro de aluminio gaseoso y el sodio l\u00edquido, lo que favorece la eliminaci\u00f3n de los \u00f3xidos. Cuando solo se trata con cloruro, solo se produce una peque\u00f1a cantidad de cloruro de aluminio gaseoso, por lo que el efecto de refinado no es tan bueno como con el fluoruro.<\/p>\n
![\"\"](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminium-Melt-Purification-Technology.jpg\")
<\/p>\n
Las operaciones de refinado con fundente en la fusi\u00f3n de aluminio se llevan a cabo de acuerdo con la normativa. La temperatura de refinado debe controlarse en el l\u00edmite superior de la temperatura de colada para mejorar el efecto de refinado. La cantidad de fundente debe ser suficiente. En el caso de productos con mayores requisitos de pureza interna, la cantidad puede ser mayor, y la dosis de uso suele ser de 4-5 kg\/t de metal. Para productos generales, la dosis de uso es de 2-3 kg\/t de metal. Una vez finalizado el refinado, se retira inmediatamente la escoria y, a continuaci\u00f3n, se espolvorea el fundente de recubrimiento y se deja reposar. El tiempo de reposo var\u00eda en funci\u00f3n del producto. Para los productos importantes, el tiempo de reposo no debe ser inferior a 30 minutos, y para los productos generales, no debe ser inferior a 15 minutos.<\/p>","protected":false},"excerpt":{"rendered":"
The aluminium melting flux should be thoroughly dried beforehand, so as to remove the moisture, which can improve the refining effect and prevent explosion accidents…<\/p>","protected":false},"author":1,"featured_media":10347,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-10346","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fluxes"],"yoast_head":"\n
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