{"id":6698,"date":"2020-11-26T02:33:37","date_gmt":"2020-11-26T02:33:37","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6698"},"modified":"2020-11-26T02:33:37","modified_gmt":"2020-11-26T02:33:37","slug":"online-purification-of-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/online-purification-of-molten-aluminum\/","title":{"rendered":"Purifica\u00e7\u00e3o em linha do alum\u00ednio fundido"},"content":{"rendered":"

Embora o alum\u00ednio fundido passe por uma s\u00e9rie de tratamentos de purifica\u00e7\u00e3o no forno, o grau de purifica\u00e7\u00e3o \u00e9 limitado, e uma certa quantidade de g\u00e1s e inclus\u00f5es permanece na massa fundida ap\u00f3s o refinamento. Para produzir barras redondas de alum\u00ednio de alta qualidade, a massa fundida de alum\u00ednio deve ser purificada ao m\u00e1ximo. Por esse motivo, um dispositivo online para purifica\u00e7\u00e3o de alum\u00ednio fundido<\/a>\u00a0\u00e9 instalado entre o forno de fundi\u00e7\u00e3o e a panela da linha de produ\u00e7\u00e3o, e inclui filtragem e refino cont\u00ednuo de g\u00e1s.<\/p>\n

Purifica\u00e7\u00e3o em linha do alum\u00ednio fundido<\/strong><\/p>\n

O g\u00e1s cont\u00ednuo dispositivo de desgaseifica\u00e7\u00e3o<\/a> utiliza N\u2082 de alta pureza para girar e pulverizar no alum\u00ednio fundido por meio de um rotor de grafite. O alum\u00ednio fundido flui a partir da parte superior da caixa de desgaseifica\u00e7\u00e3o e desce em espiral sob a agita\u00e7\u00e3o do rotor de grafite em rota\u00e7\u00e3o. O N\u2082 pulverizado pelo rotor de grafite \u00e9 fragmentado em bolhas finas sob a for\u00e7a de atrito do bico e do alum\u00ednio l\u00edquido, sendo disperso uniformemente no alum\u00ednio fundido. As bolhas finas se misturam completamente com o alum\u00ednio fundido a jusante durante o processo de ascens\u00e3o, a fim de extrair o H\u2082 e as inclus\u00f5es e purificar o material fundido. A temperatura de desgaseifica\u00e7\u00e3o em linha do alum\u00ednio fundido deve ser de 720 a 730 \u2103.<\/p>\n

\"Purifica\u00e7\u00e3o<\/p>\n

O dispositivo de filtro de placas<\/a> \u00c9 composto principalmente por uma caixa de filtro CFF e uma placa de filtro de espuma cer\u00e2mica. A placa de filtro \u00e9 imersa e posicionada horizontalmente. O revestimento interno da caixa de filtro \u00e9 feito de sil\u00edcio fundido sinterizado de alta densidade, e \u00e9 adicionado um material anti-infiltra\u00e7\u00e3o de alum\u00ednio para aumentar a vida \u00fatil da caixa de filtro. Ao mesmo tempo, apresenta caracter\u00edsticas de baixo coeficiente de expans\u00e3o t\u00e9rmica e melhor resist\u00eancia ao choque t\u00e9rmico. A principal fun\u00e7\u00e3o da placa filtrante \u00e9 absorver e interceptar inclus\u00f5es de grande porte na massa fundida, bem como as inclus\u00f5es finas distribu\u00eddas em estado de suspens\u00e3o pelo g\u00e1s adsorvido. A placa filtrante de espuma cer\u00e2mica pode impedir que impurezas entrem na concha de fundi\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

Although molten aluminum undergoes a series of purification treatments in the furnace, the degree of purification is limited, and a certain amount of gas and…<\/p>","protected":false},"author":1,"featured_media":6699,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-6698","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"\nOnline Purification of Molten Aluminum Filtration and Refining<\/title>\n<meta name=\"description\" content=\"Online purification\u00a0of molten aluminum includes filtration and continuous gas refining, so as to produce high-quality round aluminum rods.\" \/>\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\/pt\/online-purification-of-molten-aluminum\/\" 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