{"id":11821,"date":"2021-12-15T06:54:24","date_gmt":"2021-12-15T06:54:24","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11821"},"modified":"2021-12-15T06:54:24","modified_gmt":"2021-12-15T06:54:24","slug":"remove-impurities-by-flotation","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/remove-impurities-by-flotation\/","title":{"rendered":"Remo\u00e7\u00e3o de impurezas por flota\u00e7\u00e3o"},"content":{"rendered":"

Gases purificados, como o arg\u00f4nio e o nitrog\u00eanio, n\u00e3o s\u00f3 podem remover gases e \u00e1lcalis, mas tamb\u00e9m podem ser usados para remover impurezas. O g\u00e1s de purga \u00e9 injetado na parte inferior do banho de alum\u00ednio fundido, e as bolhas entram em contato com as impurezas durante o processo de flutua\u00e7\u00e3o. E quando as impurezas e as bolhas s\u00e3o molhadas pelo alum\u00ednio fundido, mas n\u00e3o s\u00e3o molhadas pelo alum\u00ednio fundido, a possibilidade de serem retidas pelas bolhas aumenta consideravelmente, e as bolhas podem flutuar at\u00e9 a camada de esc\u00f3ria superficial. Esse m\u00e9todo de remo\u00e7\u00e3o de impurezas \u00e9 chamado de flota\u00e7\u00e3o.<\/p>\n

O dispositivo de desgaseifica\u00e7\u00e3o online<\/a> \u00e9 utilizado para remover impurezas por flota\u00e7\u00e3o.<\/p>\n

Estudos demonstraram que \u00e9 dif\u00edcil remover inclus\u00f5es com tamanho inferior a 1 \u00b5m por flota\u00e7\u00e3o, e que a efici\u00eancia na remo\u00e7\u00e3o de inclus\u00f5es de 1 a 10 \u00b5m est\u00e1 relacionada ao tamanho das bolhas e \u00e0 velocidade de rota\u00e7\u00e3o do bico. Quando as inclus\u00f5es t\u00eam tamanho superior a 6 \u00b5m, elas s\u00e3o facilmente capturadas por bolhas de 1 a 10 \u00b5m. Part\u00edculas acima de 10 \u00b5m podem ser removidas pelo mecanismo de intercepta\u00e7\u00e3o externa da bolha ou pelo mecanismo de colis\u00e3o inercial. As inclus\u00f5es de 1 a 10 \u00b5m s\u00f3 podem ser removidas pelo mecanismo de colis\u00e3o, enquanto as impurezas com tamanho inferior a 1 \u00b5m precisam aumentar de tamanho para serem removidas.<\/p>\n

\"\"<\/p>\n

Teoricamente, a rota\u00e7\u00e3o do rotor pode proporcionar uma taxa de crescimento suficiente dessas impurezas, de modo que aquelas que atingem 1 a 10 \u00b5m possam ser removidas. Esse m\u00e9todo utiliza pulveriza\u00e7\u00e3o rotativa para garantir que a \u00e1rea de contato entre as bolhas e o metal fundido fique entre 2 e 20 m\u00b2\/kg e seja atualizada continuamente, de modo que as inclus\u00f5es possam permanecer em contato com as bolhas, removendo assim as impurezas de forma cont\u00ednua. .<\/p>\n

A elimina\u00e7\u00e3o das inclus\u00f5es na massa fundida de alum\u00ednio \u00e9 fundamental para o tratamento de purifica\u00e7\u00e3o da massa fundida de liga de alum\u00ednio e para a obten\u00e7\u00e3o de pe\u00e7as fundidas de liga de alum\u00ednio de alta qualidade. No entanto, para atingir esse objetivo, \u00e9 essencial compreender a origem das inclus\u00f5es, o mecanismo de forma\u00e7\u00e3o e a forma como elas se apresentam. \u00c9 preciso levar em conta todos os fatores envolvidos no processo de remo\u00e7\u00e3o de inclus\u00f5es, desenvolver tecnologias avan\u00e7adas de remo\u00e7\u00e3o de impurezas e adotar m\u00e9todos compostos de purifica\u00e7\u00e3o, como flota\u00e7\u00e3o + filtra\u00e7\u00e3o, a fim de alcan\u00e7ar o melhor efeito de remo\u00e7\u00e3o de impurezas e melhorar a qualidade do produto.<\/p>","protected":false},"excerpt":{"rendered":"

Purified gases such as argon and nitrogen can not only remove gas and alkali, but also can be used to remove impurities. The purge gas…<\/p>","protected":false},"author":1,"featured_media":11822,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13050,13049],"class_list":["post-11821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-online-degassing-filtration","tag-remove-impurities-by-flotation"],"yoast_head":"\nRemove Impurities by Flotation, Online Degassing Filtration<\/title>\n<meta name=\"description\" content=\"Purified gases such as argon and nitrogen can not only remove gas and alkali, but also can be used to remove impurities by flotation.\" \/>\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\/remove-impurities-by-flotation\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta 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