{"id":16024,"date":"2025-09-25T07:23:48","date_gmt":"2025-09-25T07:23:48","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=16024"},"modified":"2025-09-25T07:31:27","modified_gmt":"2025-09-25T07:31:27","slug":"antimony-trioxide-glass-clarifying-agent","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/pt\/antimony-trioxide-glass-clarifying-agent\/","title":{"rendered":"Tri\u00f3xido de Antim\u00f4nio \u2013 Agente Clarificante de Vidro"},"content":{"rendered":"<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-adc14a84c972fb05f0d8da37715dfa11\">O que \u00e9 tri\u00f3xido de antim\u00f4nio?<\/h2>\n\n\n\n<p>O tri\u00f3xido de antim\u00f4nio (Sb\u2082O\u2083) tem peso molecular de 291,5, densidade de 5,1 g\/cm\u00b3, ponto de fus\u00e3o de 656 \u00b0C e ponto de ebuli\u00e7\u00e3o de 1425 \u00b0C. Pode sublimar em alto v\u00e1cuo a 400 \u00b0C. O tri\u00f3xido de antim\u00f4nio \u00e9 um p\u00f3 cristalino branco, conhecido industrialmente como branco de antim\u00f4nio. \u00c9 ligeiramente sol\u00favel em \u00e1gua, \u00e1cido sulf\u00farico dilu\u00eddo e \u00e1cido n\u00edtrico dilu\u00eddo, mas sol\u00favel em \u00e1cido clor\u00eddrico, \u00e1cido sulf\u00farico concentrado, \u00e1lcalis fortes e solu\u00e7\u00f5es de \u00e1cido tart\u00e1rico.<\/p>\n\n\n\n<p>O tri\u00f3xido de antim\u00f4nio de alta qualidade apresenta baixa toxicidade. No entanto, graus inferiores podem apresentar leve toxicidade, principalmente devido ao teor excessivo de tri\u00f3xido de ars\u00eanio (As\u2082O\u2083). A exposi\u00e7\u00e3o pode causar sintomas como coceira nas m\u00e3os e nos bra\u00e7os dos operadores.<\/p>\n\n\n\n<p>O mecanismo de clarifica\u00e7\u00e3o do tri\u00f3xido de antim\u00f4nio \u00e9 semelhante ao do tri\u00f3xido de ars\u00eanio. \u00c9 um agente clarificante vers\u00e1til com densidade relativamente alta. Ele transita de um \u00f3xido mais alto para um \u00f3xido mais baixo a uma temperatura relativamente baixa e tem um desempenho particularmente bom em vidros contendo altas quantidades de \u00f3xido de chumbo (PbO) ou \u00f3xido de b\u00e1rio (BaO).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide.webp\" alt=\"\" class=\"wp-image-16025\" style=\"width:670px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide.webp 800w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-300x225.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-768x576.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-16x12.webp 16w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-1cd17e62aa4f91a94c2d3fdb1d0f35bf\">O uso do tri\u00f3xido de antim\u00f4nio<\/h2>\n\n\n\n<p>Devido \u00e0 sua volatilidade, o Sb\u2082O\u2083 n\u00e3o \u00e9 usado sozinho como agente clarificante. \u00c9 normalmente combinado com oxidantes como nitrato de s\u00f3dio (NaNO\u2083) ou nitrato de pot\u00e1ssio (KNO\u2083). <\/p>\n\n\n\n<p>Em vidros de silicato de cal sodada, uma combina\u00e7\u00e3o de 0,18% a 0,5% de Sb\u2082O\u2083 com 4 a 8 vezes seu peso em nitrato de s\u00f3dio \u00e9 usada como agente clarificante. Em temperaturas mais baixas, reage com o oxig\u00eanio liberado pela decomposi\u00e7\u00e3o do nitrato de s\u00f3dio para formar pent\u00f3xido de antim\u00f4nio (Sb\u2082O\u2085). Em temperaturas ligeiramente mais altas, o Sb\u2082O\u2085 se decomp\u00f5e, liberando oxig\u00eanio. Esse oxig\u00eanio altamente ativo se difunde em bolhas de g\u00e1s de v\u00e1rios tipos dentro do vidro fundido, fazendo com que as bolhas se expandam em volume e se elevem para fora do vidro fundido, promovendo assim a clarifica\u00e7\u00e3o do vidro. As rea\u00e7\u00f5es qu\u00edmicas s\u00e3o as seguintes:<\/p>\n\n\n\n<p>2Sb\u2082O\u2083 + O\u2082 (de NaNO\u2083) \u2192 2Sb\u2082O\u2085<\/p>\n\n\n\n<p>2Sb\u2082O\u2085 \u2192 2Sb\u2082O\u2083 + O\u2082]<\/p>\n\n\n\n<p>Em vidros de silicato de cal sodada, o uso de tri\u00f3xido de antim\u00f4nio 0,2% em conjunto com tri\u00f3xido de ars\u00eanio 0,2% (As\u2082O\u2083) potencializa o efeito de clarifica\u00e7\u00e3o. Isso ocorre porque o Sb\u2082O\u2085 libera oxig\u00eanio em temperaturas mais baixas, enquanto o pent\u00f3xido de ars\u00eanio (As\u2082O\u2085) libera oxig\u00eanio em temperaturas mais altas. Isso garante que o agente clarificante permane\u00e7a ativo em toda a faixa de temperatura de fus\u00e3o, ajudando a prevenir a forma\u00e7\u00e3o de bolhas secund\u00e1rias. No entanto, quando a combina\u00e7\u00e3o Sb\u2082O\u2083\/As\u2082O\u2083 \u00e9 usada em vidros de chumbo, quantidades excessivas podem facilmente formar cristais de arseniato e antimoniato, causando opacifica\u00e7\u00e3o do vidro.<\/p>\n\n\n\n<p>Para a produ\u00e7\u00e3o de vidro com padr\u00e3o solar, a composi\u00e7\u00e3o qu\u00edmica e as propriedades f\u00edsicas do p\u00f3 de \u00f3xido de antim\u00f4nio utilizado devem atender ou exceder os requisitos para o Grau Sb\u2082O\u2083 99,50 especificado no Padr\u00e3o Nacional Chin\u00eas GB\/T 4062-2013.<\/p>\n\n\n\n<p>Uma considera\u00e7\u00e3o importante ao usar tri\u00f3xido de antim\u00f4nio \u00e9 que o vidro contendo Sb\u2082O\u2083 pode desenvolver uma leve colora\u00e7\u00e3o amarelada quando exposto \u00e0 luz ultravioleta ou \u00e0 luz solar. (Em contraste, o vidro contendo tri\u00f3xido de ars\u00eanio pode ficar marrom escuro).<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-6cee791dcd930b03c89050291561a20a\">Por que o tri\u00f3xido de antim\u00f4nio precisa de moagem ultrafina?<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1-1024x683.webp\" alt=\"\" class=\"wp-image-16026\" style=\"width:666px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1-1024x683.webp 1024w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1-300x200.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1-768x512.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1-18x12.webp 18w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1-600x400.webp 600w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/antimony-trioxide-1.webp 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>A moagem ultrafina do tri\u00f3xido de antim\u00f4nio \u00e9 essencial para otimizar seu desempenho como retardante de chamas. Quanto mais fino o tamanho das part\u00edculas, maior a \u00e1rea superficial, o que melhora a dispers\u00e3o e a reatividade em matrizes polim\u00e9ricas e t\u00eaxteis. As especifica\u00e7\u00f5es de qualidade t\u00edpicas para p\u00f3s de tri\u00f3xido de antim\u00f4nio incluem alta pureza (~99,8%), brancura (~96,5%) e tamanho m\u00e9dio de part\u00edcula abaixo de 4 m\u00edcrons para uma aplica\u00e7\u00e3o eficaz. A obten\u00e7\u00e3o de uma distribui\u00e7\u00e3o consistente do tamanho das part\u00edculas ultrafinas aumenta os efeitos sin\u00e9rgicos de resist\u00eancia ao fogo quando combinada com retardantes de chamas halogenados, reduzindo a quantidade de aditivos necess\u00e1ria e melhorando a rela\u00e7\u00e3o custo-benef\u00edcio e o desempenho.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-f8daba8d7265ec4c0392b977bad2fc17\">Por que usar moagem por jato de ar para tri\u00f3xido de antim\u00f4nio?<\/h2>\n\n\n\n<p>Air jet milling&nbsp;(Air jet milling) is especially suitable for antimony trioxide pulverization due to several technical advantages:<\/p>\n\n\n\n<p>Ele permite o processamento a seco, o que reduz a contamina\u00e7\u00e3o e as preocupa\u00e7\u00f5es ambientais relacionadas \u00e0 moagem \u00famida.<\/p>\n\n\n\n<p>O processo permite moagem e classifica\u00e7\u00e3o simult\u00e2neas, alcan\u00e7ando distribui\u00e7\u00e3o precisa do tamanho das part\u00edculas.<\/p>\n\n\n\n<p>Os moinhos de jato de ar podem atingir tamanhos de part\u00edculas ultrafinas de forma eficiente, adequados para os requisitos de &lt;5 m\u00edcrons t\u00edpicos em aplica\u00e7\u00f5es retardantes de chamas.<\/p>\n\n\n\n<p>A tecnologia gera menos calor durante a pulveriza\u00e7\u00e3o, reduzindo o risco de degrada\u00e7\u00e3o t\u00e9rmica ou altera\u00e7\u00f5es na qu\u00edmica do produto.<\/p>\n\n\n\n<p>Seu sistema de circuito fechado melhora a seguran\u00e7a ao manusear p\u00f3s potencialmente t\u00f3xicos, como p\u00f3 de tri\u00f3xido de antim\u00f4nio.\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill.webp\" alt=\"moinho a jato\" class=\"wp-image-15869\" style=\"width:658px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill.webp 1000w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill-300x300.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill-100x100.webp 100w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill-768x768.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill-12x12.webp 12w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/jet-mill-600x600.webp 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">moinho a jato<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-09237eb90a971369367aa794adf3055b\">Considera\u00e7\u00f5es cr\u00edticas na moagem de tri\u00f3xido de antim\u00f4nio por jato de ar<\/h2>\n\n\n\n<p>Ao moer tri\u00f3xido de antim\u00f4nio em um moinho de jato de ar, deve-se prestar aten\u00e7\u00e3o a:<\/p>\n\n\n\n<p>Controle de poeira e seguran\u00e7a do trabalhador: O tri\u00f3xido de antim\u00f4nio \u00e9 suspeito de ser cancer\u00edgeno, portanto, sistemas eficazes de conten\u00e7\u00e3o e extra\u00e7\u00e3o de poeira s\u00e3o essenciais.<\/p>\n\n\n\n<p>Controle do tamanho das part\u00edculas: ajustes precisos do classificador garantem que o produto atenda \u00e0s especifica\u00e7\u00f5es, geralmente visando uma faixa estreita de tamanho em torno de 2 a 3 m\u00edcrons.<\/p>\n\n\n\n<p>Qualidade da mat\u00e9ria-prima: tamanho de alimenta\u00e7\u00e3o e teor de umidade consistentes otimizam a efici\u00eancia da moagem e a uniformidade do produto.<\/p>\n\n\n\n<p>Resist\u00eancia ao desgaste: a natureza abrasiva dos p\u00f3s minerais exige componentes dur\u00e1veis de moagem e classifica\u00e7\u00e3o para manter o desempenho.<\/p>\n\n\n\n<p>Par\u00e2metros do processo: otimizar a velocidade do fluxo de ar, a velocidade do classificador e a press\u00e3o de moagem equilibra o rendimento e a finura ultrafina.\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"533\" height=\"800\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/fluid-bed-1.webp\" alt=\"leito fluidizado\" class=\"wp-image-15993\" style=\"width:331px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/fluid-bed-1.webp 533w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/fluid-bed-1-200x300.webp 200w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/09\/fluid-bed-1-8x12.webp 8w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-vivid-red-color has-text-color has-link-color wp-elements-ce764007aa4f316600c01e4926623f3c\">M\u00e1quinas de p\u00f3 EPIC<\/h2>\n\n\n\n<p>EPIC Powder Machinery\u2019s <a href=\"http:\/\/jet-mill\">moinho de jato de ar<\/a> Os sistemas s\u00e3o projetados para atender aos padr\u00f5es exigentes da ind\u00fastria de tri\u00f3xido de antim\u00f4nio. Nossos moinhos de fluxo de ar podem alcan\u00e7ar:<\/p>\n\n\n\n<p>Tamanhos de part\u00edculas consistentemente na faixa de 1 a 3 m\u00edcrons com distribui\u00e7\u00e3o estreita para sinergia retardante de chamas superior.<\/p>\n\n\n\n<p>Alta capacidade de processamento com tecnologia de moagem com efici\u00eancia energ\u00e9tica.<\/p>\n\n\n\n<p>Sistemas robustos de controle de poeira e seguran\u00e7a garantindo a conformidade com as normas de sa\u00fade ocupacional.<\/p>\n\n\n\n<p>Componentes internos resistentes ao desgaste otimizados para p\u00f3s minerais abrasivos.<\/p>\n\n\n\n<p>Controles de processo personaliz\u00e1veis que permitem aos clientes otimizar par\u00e2metros para requisitos espec\u00edficos do produto.<\/p>\n\n\n\n<p>Os clientes observaram melhoria na qualidade do produto, redu\u00e7\u00e3o na dosagem de aditivos em aplica\u00e7\u00f5es finais e economia geral nos custos de processamento usando os moinhos de jato de ar da EPIC para produ\u00e7\u00e3o de p\u00f3 de tri\u00f3xido de antim\u00f4nio.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Dados experimentais sobre moagem a jato de carbono poroso: aplica\u00e7\u00f5es e insights de desempenho\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/nO1HpoGEgA0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f15081-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"15081\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form 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O tri\u00f3xido de antim\u00f4nio (Sb\u2082O\u2083) tem peso molecular de 291,5, densidade de 5,1 g\/cm\u00b3, ponto de fus\u00e3o de 656 \u00b0C e ponto de ebuli\u00e7\u00e3o de 1425 \u00b0C. 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