{"id":10005,"date":"2021-08-21T06:44:22","date_gmt":"2021-08-21T06:44:22","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10005"},"modified":"2021-08-20T06:48:16","modified_gmt":"2021-08-20T06:48:16","slug":"hydrogen-removal-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/hydrogen-removal-purification\/","title":{"rendered":"Purifica\u00e7\u00e3o por remo\u00e7\u00e3o de hidrog\u00eanio"},"content":{"rendered":"

A purifica\u00e7\u00e3o por remo\u00e7\u00e3o de hidrog\u00eanio pode ser descrita, de maneira geral, como um m\u00e9todo de flota\u00e7\u00e3o por bolhas. Por meio de um determinado m\u00e9todo, um grande n\u00famero de bolhas \u00e9 gerado no alum\u00ednio l\u00edquido, e a diferen\u00e7a de press\u00e3o parcial entre o hidrog\u00eanio presente no alum\u00ednio l\u00edquido e nas bolhas \u00e9 utilizada para fazer com que o hidrog\u00eanio do alum\u00ednio l\u00edquido entre continuamente nas bolhas que flutuam no l\u00edquido, escapando, por fim, da superf\u00edcie do l\u00edquido junto com as bolhas. Ao mesmo tempo, uma parte da esc\u00f3ria \u00e9 removida durante o processo de flutua\u00e7\u00e3o das bolhas, a fim de alcan\u00e7ar o objetivo de remo\u00e7\u00e3o da esc\u00f3ria. A remo\u00e7\u00e3o de hidrog\u00eanio purifica\u00e7\u00e3o e desgaseifica\u00e7\u00e3o<\/a> Os m\u00e9todos incluem, principalmente, Air-Liquide, SNIF, Alpur, MINT, etc.<\/p>\n

O m\u00e9todo da Air-Liquide \u00e9 uma forma mais simples de purificar continuamente a liga de alum\u00ednio fundida. H\u00e1 um tijolo perme\u00e1vel no fundo, e o g\u00e1s nitrog\u00eanio passa por ele, formando min\u00fasculas bolhas. As bolhas sobem no metal fundido, absorvem g\u00e1s durante o contato com o metal, absorvem inclus\u00f5es e as levam para a superf\u00edcie, produzindo um efeito de purifica\u00e7\u00e3o.<\/p>\n

O princ\u00edpio de purifica\u00e7\u00e3o do m\u00e9todo SNIF (Spinning Nozzle Inert Flotation) consiste em injetar g\u00e1s inerte na massa fundida por meio de um bocal girat\u00f3rio de alta velocidade, a fim de realizar a desgaseifica\u00e7\u00e3o, a flota\u00e7\u00e3o e a separa\u00e7\u00e3o das inclus\u00f5es. O processo de purifica\u00e7\u00e3o: a massa fundida de liga de alum\u00ednio entra na primeira zona de purifica\u00e7\u00e3o atrav\u00e9s da entrada do dispositivo e \u00e9 purificada pelo primeiro bocal girat\u00f3rio. Em seguida, entra na segunda zona de purifica\u00e7\u00e3o atrav\u00e9s da divis\u00f3ria para purifica\u00e7\u00e3o secund\u00e1ria, e a massa fundida retorna \u00e0 c\u00e2mara de armazenamento na parte frontal do dispositivo atrav\u00e9s do tubo de grafite na parte inferior do forno, fluindo finalmente para fora pela sa\u00edda superior.<\/p>\n

O dispositivo Alpur tem sido amplamente utilizado na ind\u00fastria de processamento de ligas de alum\u00ednio desde sua cria\u00e7\u00e3o, em 1981. Uma caixa de desgaseifica\u00e7\u00e3o \u00e9 colocada entre o forno vertical e a linha de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o, e a liga de alum\u00ednio fundida \u00e9 tratada com g\u00e1s inerte na caixa de processamento para remover hidrog\u00eanio e outras impurezas. A estrutura especial do rotor girat\u00f3rio da Alpur permite a forma\u00e7\u00e3o de um grande n\u00famero de bolhas dispersas no g\u00e1s injetado, o que proporciona um melhor efeito de purifica\u00e7\u00e3o.<\/p>\n

O m\u00e9todo MINT (Melt In-Line Treatment) \u00e9 um novo m\u00e9todo introduzido no in\u00edcio da d\u00e9cada de 1980 e adequado para a desgaseifica\u00e7\u00e3o em linha da liga de alum\u00ednio fundida no processamento e na produ\u00e7\u00e3o de ligas de alum\u00ednio. Ele apresenta um bom efeito de purifica\u00e7\u00e3o em rela\u00e7\u00e3o ao hidrog\u00eanio, \u00e0s inclus\u00f5es n\u00e3o met\u00e1licas e aos metais alcalinos presentes na liga de alum\u00ednio fundida. O metal fundido de liga de alum\u00ednio flui para a parte superior do reator na dire\u00e7\u00e3o tangencial e gira dentro do reator, enquanto o arg\u00f4nio utilizado para purifica\u00e7\u00e3o \u00e9 injetado no metal fundido a partir da parte inferior do reator.<\/p>","protected":false},"excerpt":{"rendered":"

The hydrogen removal purification can generally be described as a bubble floatation method. Through a certain method, a large number of bubbles are created in…<\/p>","protected":false},"author":1,"featured_media":10007,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12395,12394],"class_list":["post-10005","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-bubble-floatation-method","tag-hydrogen-removal-purification"],"yoast_head":"\nHydrogen Removal Purification, Bubble Floatation Method<\/title>\n<meta name=\"description\" content=\"The hydrogen removal purification can generally be described as a bubble floatation method, includes Air-Liquide, SNIF, Alpur, MINT, etc.\" \/>\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\/hydrogen-removal-purification\/\" \/>\n<meta property=\"og:locale\" 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