{"id":6632,"date":"2021-04-04T12:46:18","date_gmt":"2021-04-04T12:46:18","guid":{"rendered":"https:\/\/www.aluminaceramicball.com\/?p=6632"},"modified":"2021-04-12T06:47:44","modified_gmt":"2021-04-12T06:47:44","slug":"o-efeito-do-excesso-de-oxido-de-ferro-no-po-de-alumina-sobre-a-ceramica","status":"publish","type":"post","link":"https:\/\/www.aluminaceramicball.com\/pt\/o-efeito-do-excesso-de-oxido-de-ferro-no-po-de-alumina-sobre-a-ceramica\/","title":{"rendered":"O efeito do excesso de \u00f3xido de ferro no p\u00f3 de alumina sobre a cer\u00e2mica"},"content":{"rendered":"<p>Alta temperatura <a href=\"https:\/\/www.aluminaceramicball.com\/pt\/controlo-da-qualidade-e-efeito-do-po-de-alumina\/\">p\u00f3 de alumina<\/a> \u00e9 feito de hidr\u00f3xido de alum\u00ednio industrial e bauxita, peneira molecular e <a href=\"https:\/\/www.aluminaceramicball.com\/pt\/esferas-de-moagem-de-alumina-meios-de-moagem-para-as-industrias-de-ceramica-e-cimento\/\">bolas de moagem<\/a> como mat\u00e9ria-prima, e \u00e9 calcinada num forno de t\u00fanel durante muito tempo a alta temperatura. Que efeito ter\u00e1 o teor excessivo de \u00f3xido de ferro no p\u00f3 de alumina a alta temperatura na cer\u00e2mica?<\/p>\n<p>O efeito mais intuitivo do elevado teor de \u00f3xido de ferro em <a href=\"\/pt\/produto\/po-ceramico-de-alumina\/\" target=\"_blank\" rel=\"noopener\">p\u00f3 de alumina<\/a> \u00e9 a cor da cer\u00e2mica, por isso, como \u00e9 que afecta a sua cor?<\/p>\n<p>O teor de \u00f3xido de ferro no p\u00f3 de alumina de alta temperatura refere-se, por um lado, ao Fe qu\u00edmico nele incorporado e, por outro, ao ferro fino livre contido no p\u00f3 (tamb\u00e9m conhecido como ferro mec\u00e2nico). No caso do Fe qu\u00edmico, existe normalmente como Fe2O3. Para as part\u00edculas de Fe arrastadas pelo A12O3 na mat\u00e9ria-prima durante o processo de sinteriza\u00e7\u00e3o da cer\u00e2mica, aparecem manchas vermelhas ou pretas no interior ou na superf\u00edcie da cer\u00e2mica, o que n\u00e3o s\u00f3 afecta o aspeto do substrato cer\u00e2mico, como tamb\u00e9m afecta o seu desempenho de isolamento. A ocorr\u00eancia de manchas far\u00e1 com que o produto seja sucateado e reduzir\u00e1 o rendimento. Ao mesmo tempo, o Fe2O3, se o teor for demasiado elevado, tamb\u00e9m far\u00e1 com que a cor do substrato cer\u00e2mico fique amarela. A raz\u00e3o est\u00e1 intimamente relacionada com a rea\u00e7\u00e3o de cor dos i\u00f5es Fe em vez dos i\u00f5es Al no car\u00e1cter do corindo.<\/p>","protected":false},"excerpt":{"rendered":"<p>High-temperature alumina powder is made of industrial aluminum hydroxide and bauxite, molecular sieve and grinding balls as raw materials, and is calcined in a tunnel kiln for a long time at high temperature. What effect will the excessive iron oxide content in the high-temperature alumina powder have on ceramic What? The most intuitive effect of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[137],"tags":[464],"class_list":["post-6632","post","type-post","status-publish","format-standard","hentry","category-alumina-powder","tag-alumina-powder-tech-service"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The effect of excessive iron oxide in alumina powder on ceramics | Alumina Ceramic Products Manufacturer<\/title>\n<meta name=\"description\" content=\"The effect of excessive iron oxide in alumina powder on ceramics, Know more About Knowledge for Tabular Alumina, Alumina Grinding Ball, Alumina Ceramic Grinding Column, Alumina Ceramic Lined Pipe, Alumina Ceramic Powder, Alumina ceramic lining Bricks, Alumina Ceramic Mosaic Tile, Alumina ceramic Plate, High Alumina 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\u00f3xido de ferro no p\u00f3 de alumina sobre a cer\u00e2mica, Saiba mais sobre o conhecimento para Alumina tabular, Bola de moagem de alumina, Coluna de moagem de cer\u00e2mica de alumina, Tubo revestido de cer\u00e2mica de alumina, P\u00f3 de cer\u00e2mica de alumina, Tijolos de revestimento de cer\u00e2mica de alumina, Mosaico de cer\u00e2mica de alumina, Placa de cer\u00e2mica de alumina, Bolas de cer\u00e2mica de alta alumina Moagem h\u00famida","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.aluminaceramicball.com\/pt\/o-efeito-do-excesso-de-oxido-de-ferro-no-po-de-alumina-sobre-a-ceramica\/","og_locale":"pt_PT","og_type":"article","og_title":"The effect of excessive iron oxide in alumina powder on ceramics | Alumina Ceramic Products Manufacturer","og_description":"The effect of excessive iron oxide in alumina powder on ceramics, Know 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