{"id":11185,"date":"2021-11-13T08:18:59","date_gmt":"2021-11-13T08:18:59","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11185"},"modified":"2021-11-12T08:25:19","modified_gmt":"2021-11-12T08:25:19","slug":"rotary-degasser-unit","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/rotary-degasser-unit\/","title":{"rendered":"Unidade de desgaseifica\u00e7\u00e3o rotativa"},"content":{"rendered":"

O g\u00e1s arg\u00f4nio (contendo uma pequena quantidade de g\u00e1s cloro) \u00e9 introduzido na unidade de desgaseifica\u00e7\u00e3o rotativa em linha para remover o g\u00e1s presente na massa fundida. A massa fundida de alum\u00ednio \u00e9 filtrada sequencialmente por um filtro cer\u00e2mico e um filtro de leito profundo para remover inclus\u00f5es s\u00f3lidas n\u00e3o met\u00e1licas da massa fundida.<\/p>\n

O m\u00e9todo de desgaseifica\u00e7\u00e3o inerte com bocal rotativo \u00e9 um tipo de dispositivo de tratamento para o alum\u00ednio fundido fora do forno. Essa unidade de desgaseifica\u00e7\u00e3o rotativa \u00e9 equipada com um bocal rotativo de grafite na c\u00e2mara de rea\u00e7\u00e3o, e o g\u00e1s passa pelo rotor do bocal para formar bolhas finas e dispersas. Ao mesmo tempo, com o metal fundido agitado pelo rotor, as bolhas s\u00e3o dispersas uniformemente por todo o metal fundido, produzindo assim o efeito de purifica\u00e7\u00e3o por exaust\u00e3o e remo\u00e7\u00e3o de esc\u00f3ria<\/a>.<\/p>\n

A placa filtrante de espuma cer\u00e2mica \u00e9 fabricada por meio da inje\u00e7\u00e3o da pasta misturada de alumina e fosfato no pl\u00e1stico esponjoso, seguida de secagem e sinteriza\u00e7\u00e3o para volatilizar o pl\u00e1stico esponjoso. Ela tamb\u00e9m pode ser chamada de folha cer\u00e2mica de espuma com malha microporosa, com uma estrutura semelhante \u00e0 de uma esponja.<\/p>\n

A placa filtrante de cer\u00e2mica espumosa \u00e9 f\u00e1cil de usar, possui bom efeito de filtragem, tem pre\u00e7o baixo e \u00e9 amplamente utilizada em todo o mundo. Mais de 50% de ligas de alum\u00ednio fundidas nos pa\u00edses desenvolvidos s\u00e3o filtradas por placas filtrantes de cer\u00e2mica espumosa.<\/p>\n

\"Filtro<\/p>\n

O filtro de leito profundo possui uma estrutura em caixa met\u00e1lica com um revestimento de isolamento t\u00e9rmico de alto desempenho no interior e um revestimento de gesso refrat\u00e1rio. A caixa \u00e9 vedada pela tampa superior de aquecimento, que tamb\u00e9m pr\u00e9-aquece o filtro. O corpo da caixa \u00e9 geralmente composto por duas cavidades; a cavidade de entrada \u00e9 equipada com uma camada filtrante, e essa camada \u00e9 sustentada por uma grade.<\/p>\n

O leito filtrante \u00e9 composto por v\u00e1rias camadas de esferas de alumina e camadas de cascalho. A escolha do tamanho do material filtrante e a distribui\u00e7\u00e3o das diferentes camadas desempenham um papel fundamental na otimiza\u00e7\u00e3o do efeito de filtragem e no prolongamento da vida \u00fatil do leito filtrante.<\/p>\n

Durante o uso, o filtro \u00e9 aquecido e isolado pelos dispositivos de aquecimento superior e inferior, o que permite prolongar sua vida \u00fatil, e a produ\u00e7\u00e3o de metal fundido pode ultrapassar 7.000 t. Portanto, o filtro de leito profundo \u00e9 adequado para a produ\u00e7\u00e3o de ligas de alum\u00ednio em lotes maiores.<\/p>","protected":false},"excerpt":{"rendered":"

Argon gas (containing a small amount of chlorine gas) is introduced into the online rotary degasser unit to remove the gas in the melt. The…<\/p>","protected":false},"author":1,"featured_media":11189,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12804,12803],"class_list":["post-11185","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-melt-degassing-purification","tag-rotary-degasser-unit"],"yoast_head":"\nRotary Degasser Unit, Aluminum Melt Degassing Purification<\/title>\n<meta name=\"description\" content=\"The rotary degasser unit is equipped with rotating nozzle in the reaction chamber, and the gas passes through the rotor to form bubbles.\" \/>\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\/rotary-degasser-unit\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" 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