{"id":9950,"date":"2021-08-18T03:49:24","date_gmt":"2021-08-18T03:49:24","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9950"},"modified":"2021-08-18T03:49:24","modified_gmt":"2021-08-18T03:49:24","slug":"slagging-and-degassing-methods","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/slagging-and-degassing-methods\/","title":{"rendered":"M\u00e9todos de escoria\u00e7\u00e3o e desgaseifica\u00e7\u00e3o"},"content":{"rendered":"

Os m\u00e9todos de escoria\u00e7\u00e3o e desgaseifica\u00e7\u00e3o no processo de fundi\u00e7\u00e3o de alum\u00ednio e ligas de alum\u00ednio podem, de modo geral, ser divididos em m\u00e9todos de cobertura com fluxo e de prote\u00e7\u00e3o com g\u00e1s inerte; m\u00e9todos de rea\u00e7\u00e3o qu\u00edmica e adsor\u00e7\u00e3o, ou seja, m\u00e9todos de refino com fluxo e com g\u00e1s; e m\u00e9todos sem adsor\u00e7\u00e3o, incluindo principalmente os m\u00e9todos de v\u00e1cuo e de filtra\u00e7\u00e3o CFF. Al\u00e9m disso, de acordo com os diferentes meios de purifica\u00e7\u00e3o utilizados no refinamento, pode-se dividir em m\u00e9todo de refinamento com fluxo s\u00f3lido e m\u00e9todo de refinamento com g\u00e1s. De acordo com os diferentes processos, pode-se dividir em refinamento em forno, refinamento em linha fora do forno e Filtragem CFF<\/a> purifica\u00e7\u00e3o.<\/p>\n

As diversas medidas de purifica\u00e7\u00e3o utilizadas atualmente n\u00e3o conseguem atingir uma taxa de remo\u00e7\u00e3o de esc\u00f3ria e g\u00e1s de 100%. No processo de fundi\u00e7\u00e3o que utiliza alum\u00ednio l\u00edquido eletrol\u00edtico para produzir diretamente lingotes para processamento de alum\u00ednio, \u00e9 necess\u00e1rio realizar tr\u00eas etapas de refino e duas de filtragem.<\/p>\n

A refina\u00e7\u00e3o \u00e9 protegida por um agente de cobertura, utilizando um agente de refina\u00e7\u00e3o s\u00f3lido n\u00e3o t\u00f3xico \u00e0 base de sal de nitrato ou fluoreto contendo criolita, ou p\u00f3 pulverizado com nitrog\u00eanio agente refinador<\/a> para refino e purifica\u00e7\u00e3o, a fim de remover inclus\u00f5es n\u00e3o met\u00e1licas da massa fundida, e parte delas pode ser removida ao mesmo tempo que os gases e os metais alcalinos.<\/p>\n

Os m\u00e9todos de tratamento de esc\u00f3ria e desgaseifica\u00e7\u00e3o podem reduzir significativamente o teor de esc\u00f3ria do forno de fus\u00e3o e a carga de trabalho do forno, o que \u00e9 ben\u00e9fico para a fus\u00e3o da liga e melhora a pureza e a limpeza originais do material fundido.<\/p>\n

No processo de fundi\u00e7\u00e3o, a purifica\u00e7\u00e3o do material fundido no forno \u00e9 realizada principalmente no refinamento do forno de mistura, por meio do m\u00e9todo de purifica\u00e7\u00e3o com fluxo, do m\u00e9todo de purifica\u00e7\u00e3o com pulveriza\u00e7\u00e3o de g\u00e1s inerte e do m\u00e9todo de purifica\u00e7\u00e3o com g\u00e1s ativo (mistura de nitrog\u00eanio e cloro). Os dois \u00faltimos m\u00e9todos s\u00e3o utilizados principalmente para o refinamento em fornos est\u00e1ticos; no entanto, na produ\u00e7\u00e3o cont\u00ednua de tiras laminadas a quente, deve-se utilizar o m\u00e9todo de purifica\u00e7\u00e3o com g\u00e1s misto de nitrog\u00eanio e cloro para impedir que o fluxo s\u00f3lido e a esc\u00f3ria entrem no material fundido.<\/p>","protected":false},"excerpt":{"rendered":"

The slagging and degassing methods in the smelting process of aluminum and aluminum alloys can generally be divided into flux covering and inert gas protection…<\/p>","protected":false},"author":1,"featured_media":9951,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12369,7383,1775,12370,833,12368],"class_list":["post-9950","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-smelting","tag-cff-filtration","tag-furnace-refining","tag-online-refining","tag-refining-agent","tag-slagging-and-degassing"],"yoast_head":"\nSlagging and Degassing Methods in Aluminum Smelting Process<\/title>\n<meta name=\"description\" content=\"The slagging and degassing methods in the smelting process of aluminum include flux covering and inert gas protection methods...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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