{"id":5171,"date":"2020-09-25T09:28:02","date_gmt":"2020-09-25T09:28:02","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5171"},"modified":"2020-09-25T10:05:56","modified_gmt":"2020-09-25T10:05:56","slug":"secondary-aluminum-production","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/secondary-aluminum-production\/","title":{"rendered":"Produ\u00e7\u00e3o de alum\u00ednio secund\u00e1rio"},"content":{"rendered":"

Como transformar uma variedade t\u00e3o grande de mat\u00e9rias-primas complexas em lingotes de alum\u00ednio reciclado de qualidade \u00e9 a quest\u00e3o central da produ\u00e7\u00e3o de alum\u00ednio reciclado. A primeira etapa do processo de produ\u00e7\u00e3o de alum\u00ednio secund\u00e1rio \u00e9 a triagem e classifica\u00e7\u00e3o de res\u00edduos e materiais diversos de alum\u00ednio.
\nQuanto mais refinada for a triagem e quanto mais precisa for a classifica\u00e7\u00e3o, mais f\u00e1cil ser\u00e1 controlar a composi\u00e7\u00e3o qu\u00edmica de alum\u00ednio reciclado<\/a>.
\nAs pe\u00e7as de sucata de alum\u00ednio costumam conter muitos elementos estranhos. Esses elementos s\u00e3o, em sua maioria, pe\u00e7as que n\u00e3o s\u00e3o de alum\u00ednio, feitas de a\u00e7o ou liga de cobre. Se n\u00e3o forem removidos a tempo durante o processo de fundi\u00e7\u00e3o, causar\u00e3o adi\u00e7\u00f5es desnecess\u00e1rias \u00e0 composi\u00e7\u00e3o do alum\u00ednio secund\u00e1rio (como Fe, Cu, etc.).
\nPortanto, na fase inicial da fundi\u00e7\u00e3o de alum\u00ednio secund\u00e1rio, ou seja, quando o alum\u00ednio residual acaba de ser derretido, \u00e9 necess\u00e1rio que haja um processo de remo\u00e7\u00e3o das inser\u00e7\u00f5es (comumente conhecido como processo de remo\u00e7\u00e3o).<\/p>\n

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

Produ\u00e7\u00e3o de alum\u00ednio secund\u00e1rio<\/h2>\n

Retire as inser\u00e7\u00f5es das pe\u00e7as de alum\u00ednio descartadas; quanto mais r\u00e1pido e limpo for esse processo, mais f\u00e1cil ser\u00e1 controlar a composi\u00e7\u00e3o qu\u00edmica do alum\u00ednio reciclado.
\nA temperatura do material fundido n\u00e3o deve ser muito alta durante o lixamento, pois o aumento da temperatura far\u00e1 com que os elementos Fe e Cu presentes na inser\u00e7\u00e3o se dissolvam no alum\u00ednio fundido.<\/p>\n

Os res\u00edduos de alum\u00ednio coletados em diversos locais apresentam, inevitavelmente, sujeira na superf\u00edcie devido a diversos motivos, e alguns est\u00e3o fortemente enferrujados. Essas superf\u00edcies sujas e enferrujadas entrar\u00e3o no banho de fus\u00e3o, formando fases de esc\u00f3ria e inclus\u00f5es de oxida\u00e7\u00e3o durante a fus\u00e3o, o que prejudicar\u00e1 gravemente a qualidade metal\u00fargica do alum\u00ednio secund\u00e1rio. .
\nA remo\u00e7\u00e3o dessas fases de esc\u00f3ria e inclus\u00f5es de \u00f3xido tamb\u00e9m \u00e9 um dos processos importantes na fundi\u00e7\u00e3o de alum\u00ednio secund\u00e1rio.
\nUtiliza-se uma purifica\u00e7\u00e3o em m\u00faltiplas etapas; ou seja, primeiro \u00e9 realizada uma purifica\u00e7\u00e3o preliminar, em seguida a composi\u00e7\u00e3o \u00e9 ajustada e, depois, \u00e9 realizada uma purifica\u00e7\u00e3o secund\u00e1ria mais refinada das terras raras; por fim, injeta-se g\u00e1s inerte para refor\u00e7ar ainda mais o efeito de refinamento, o que permite remover efetivamente as inclus\u00f5es na massa fundida de alum\u00ednio.<\/p>","protected":false},"excerpt":{"rendered":"

How to prepare such a variety of complex raw materials into qualified recycled aluminum ingots is the core issue of recycled aluminum production. The first…<\/p>","protected":false},"author":1,"featured_media":5173,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5171","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nSecondary Aluminum Production by Recycled Aluminum<\/title>\n<meta name=\"description\" content=\"The first step of the secondary aluminum production process is the sorting and classification process of waste and miscellaneous aluminum.\" \/>\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\/secondary-aluminum-production\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Secondary Aluminum 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