{"id":9315,"date":"2021-06-25T03:34:35","date_gmt":"2021-06-25T03:34:35","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9315"},"modified":"2021-06-25T03:34:35","modified_gmt":"2021-06-25T03:34:35","slug":"aluminum-refining-fluxes","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-refining-fluxes\/","title":{"rendered":"Fluxos para refino de alum\u00ednio"},"content":{"rendered":"

Os fluxos compostos para refino de alum\u00ednio referem-se a uma mistura de sais formada pela combina\u00e7\u00e3o ou fus\u00e3o de dois ou mais sais individuais. Esse \u00e9 o tipo de agente de refino mais amplamente utilizado na ind\u00fastria do alum\u00ednio. \u00c9 poss\u00edvel escolher diferentes agentes de refino de acordo com diversas necessidades, tais como fluxos compostos para agentes purificadores, agentes de escoria\u00e7\u00e3o, agentes de cobertura e agentes de remo\u00e7\u00e3o de magn\u00e9sio. Oferecemos fluxo granular e em p\u00f3 nas duas formas. Em compara\u00e7\u00e3o com o fluxo em p\u00f3, os produtos granulares s\u00e3o livres de poeira e mais eficientes, bastando uma pequena quantidade para a adi\u00e7\u00e3o.<\/p>\n

Nos fundidos de alum\u00ednio e ligas de alum\u00ednio, os fluxos de refino de alum\u00ednio s\u00e3o subst\u00e2ncias capazes de remover gases, inclus\u00f5es e elementos nocivos do fundido por meio de intera\u00e7\u00f5es f\u00edsicas e qu\u00edmicas. Os agentes de refino de ligas de alum\u00ednio comumente utilizados, de acordo com suas fun\u00e7\u00f5es, incluem o agente de cobertura, o agente de desgaseifica\u00e7\u00e3o e o agente de refino (tamb\u00e9m conhecido como agente purificador composto), agente de escoria\u00e7\u00e3o<\/a> (tamb\u00e9m conhecido como separador de esc\u00f3ria e alum\u00ednio), agente de limpeza de fornos, agente de remo\u00e7\u00e3o de magn\u00e9sio e agente de desgaseifica\u00e7\u00e3o.<\/p>\n

Os agentes de refino \u00e0 base de sais de cloreto comumente utilizados geralmente apresentam caracter\u00edsticas como alta volatilidade, baixo ponto de ebuli\u00e7\u00e3o e rea\u00e7\u00e3o violenta durante o processo de refino. No entanto, os sais de cloreto s\u00e3o, em geral, higrosc\u00f3picos, e o produto final da rea\u00e7\u00e3o, o cloreto de alum\u00ednio, apresenta um certo grau de toxicidade e polui o meio ambiente. Alguns sais de cloreto aumentam o teor de impurezas met\u00e1licas, e seu uso \u00e9 restrito.<\/p>\n

\"\"<\/p>\n

Os requisitos b\u00e1sicos para os fundentes de refino de alum\u00ednio s\u00e3o:<\/p>\n

\u2460N\u00e3o ocorre nenhuma rea\u00e7\u00e3o qu\u00edmica prejudicial ao alum\u00ednio fundido na faixa de temperatura de opera\u00e7\u00e3o.
\n\u2461 Possui boas propriedades de refino, cobertura ou forma\u00e7\u00e3o de esc\u00f3ria, ou o desempenho necess\u00e1rio para a remo\u00e7\u00e3o de impurezas met\u00e1licas.
\n\u2462O ponto de fus\u00e3o deve ser inferior \u00e0 temperatura de fus\u00e3o e apresentar boa fluidez no estado l\u00edquido; independentemente do tipo de fluxo composto, ele deve ser f\u00e1cil de separar do alum\u00ednio fundido e n\u00e3o aderir \u00e0s paredes do forno nem \u00e0s ferramentas.
\n\u2463A densidade deve ser inferior \u00e0 densidade do alum\u00ednio fundido \u00e0 temperatura de trabalho.
\n\u2464 Seque bem.
\n\u2465Fontes suficientes, abastecimento conveniente e pre\u00e7os baixos.<\/p>","protected":false},"excerpt":{"rendered":"

Composite Aluminum Refining Fluxes refer to a salt mixture formed by mixing or fusing two or more single salts. This is the most widely used…<\/p>","protected":false},"author":1,"featured_media":9316,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9315","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminum Refining Fluxes for Smelter and Foundries<\/title>\n<meta name=\"description\" content=\"Composite Aluminum Refining Fluxes refer to a salt mixture formed by mixing or fusing. 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