{"id":3499,"date":"2025-09-08T09:43:24","date_gmt":"2025-09-08T01:43:24","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?p=3499"},"modified":"2025-09-08T09:43:29","modified_gmt":"2025-09-08T01:43:29","slug":"the-benefits-of-using-calcium-carbonate-in-paper-industry","status":"publish","type":"post","link":"https:\/\/calcium-carbonate.epic-powder.com\/pt\/the-benefits-of-using-calcium-carbonate-in-paper-industry\/","title":{"rendered":"Os benef\u00edcios do uso de carbonato de c\u00e1lcio na ind\u00fastria de papel"},"content":{"rendered":"<p>Atualmente, a quantidade de cargas e pigmentos utilizados na fabrica\u00e7\u00e3o de papel fica atr\u00e1s apenas da fibra como uma das mat\u00e9rias-primas mais importantes. As cargas comuns na fabrica\u00e7\u00e3o de papel incluem carbonato de c\u00e1lcio, talco, caulim, wollastonita, bentonita e outras. \u00c0 medida que o processo \u00e1cido de fabrica\u00e7\u00e3o de papel gradualmente se desloca para processos neutros e alcalinos, <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/machines\/\">carbonato de c\u00e1lcio<\/a>, como uma importante mat\u00e9ria-prima na fabrica\u00e7\u00e3o de papel, est\u00e1 sendo cada vez mais utilizada na ind\u00fastria papeleira.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-calcium-carbonate.webp\" alt=\"moinho de bolas para carbonato de c\u00e1lcio\" class=\"wp-image-3438\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-calcium-carbonate.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-calcium-carbonate-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-calcium-carbonate-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-calcium-carbonate-768x768.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-calcium-carbonate-12x12.webp 12w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">moinho de bolas para carbonato de c\u00e1lcio<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">O papel de <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/machines\/ball-mill\/\">Carbonato de c\u00e1lcio<\/a> na Ind\u00fastria de Papel<\/h2>\n\n\n\n<p>O carbonato de c\u00e1lcio \u00e9 usado principalmente na fabrica\u00e7\u00e3o de papel de duas maneiras principais: como enchimento para fabrica\u00e7\u00e3o de papel e como pigmento de revestimento.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Enchimento<\/h3>\n\n\n\n<p>As cargas para a fabrica\u00e7\u00e3o de papel s\u00e3o p\u00f3s minerais finos e brancos, geralmente insol\u00faveis ou ligeiramente sol\u00faveis em \u00e1gua. Os principais objetivos da adi\u00e7\u00e3o de cargas ao papel s\u00e3o os seguintes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Os enchimentos se dispersam entre as fibras da polpa, preenchendo os vazios e melhorando as propriedades \u00f3pticas do papel, como opacidade e brilho.<\/li>\n\n\n\n<li>Melhora a absor\u00e7\u00e3o de tinta do papel, tornando-o mais adequado para impress\u00e3o.<\/li>\n\n\n\n<li>Atender a certos requisitos espec\u00edficos para propriedades do papel, como melhorar a condutividade ou a resist\u00eancia ao calor.<\/li>\n\n\n\n<li>Reduza o uso de mat\u00e9rias-primas fibrosas, diminuindo assim os custos de produ\u00e7\u00e3o.<\/li>\n\n\n\n<li>Os enchimentos t\u00eam uma grande \u00e1rea de superf\u00edcie espec\u00edfica, ajudando a superar problemas de resina.<\/li>\n<\/ul>\n\n\n\n<p>As vantagens de usar carbonato de c\u00e1lcio como enchimento para fabrica\u00e7\u00e3o de papel incluem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fonte abundante e baixo custo.<\/li>\n\n\n\n<li>Part\u00edculas finas, alta brancura e opacidade do papel significativamente melhorada.<\/li>\n\n\n\n<li>R\u00e1pida absor\u00e7\u00e3o de tinta, melhorando a receptividade da tinta do papel.<\/li>\n\n\n\n<li>Torna o papel mais macio, mais denso e lhe d\u00e1 um alto brilho.<\/li>\n\n\n\n<li>Tem pouco efeito na resist\u00eancia f\u00edsica do papel.<\/li>\n<\/ul>\n\n\n\n<p>A quantidade de carga adicionada \u00e9 determinada principalmente por fatores como o tipo de papel, o tipo de celulose, as propriedades da pr\u00f3pria carga e as condi\u00e7\u00f5es de fabrica\u00e7\u00e3o do papel. Para economizar no consumo de fibras e reduzir os custos de produ\u00e7\u00e3o, a quantidade de carga deve ser aumentada adequadamente, garantindo que o papel atenda aos requisitos de produ\u00e7\u00e3o e uso.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Revestimento<\/h3>\n\n\n\n<p>O objetivo do revestimento \u00e9 melhorar a qualidade e a uniformidade do papel ou papel\u00e3o impresso final. O principal objetivo dos pigmentos de revestimento \u00e9 obter melhores propriedades \u00f3pticas, lisura e brilho. O fator mais importante \u00e9 obter um melhor efeito visual de impress\u00e3o. Os revestimentos de papel normalmente consistem em pigmentos, ligantes, aditivos e \u00e1gua, sendo os pigmentos os mais cr\u00edticos. As caracter\u00edsticas do papel revestido dependem em grande parte da escolha do pigmento.<\/p>\n\n\n\n<p>Devido \u00e0 sua alta brancura e boa fluidez, o carbonato de c\u00e1lcio \u00e9 adequado para a prepara\u00e7\u00e3o de revestimentos com alto teor de s\u00f3lidos. Requer menos ligante, melhorando a absor\u00e7\u00e3o da tinta pelo revestimento. Tamb\u00e9m proporciona boa brancura e tonalidade, aumentando a permeabilidade. O carbonato de c\u00e1lcio \u00e9 um dos pigmentos de revestimento mais utilizados.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Diferen\u00e7as na aplica\u00e7\u00e3o de carbonato de c\u00e1lcio mo\u00eddo (GCC) e carbonato de c\u00e1lcio precipitado (PCC) na ind\u00fastria de papel<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"552\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/papermaking-industry.webp\" alt=\"ind\u00fastria de fabrica\u00e7\u00e3o de papel\" class=\"wp-image-3500\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/papermaking-industry.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/papermaking-industry-300x207.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/papermaking-industry-768x530.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/09\/papermaking-industry-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/astra-portfolio\/calcium-carbonate-superfine-classifier-project-2\/\">Carbonato de c\u00e1lcio mo\u00eddo<\/a> O carbonato de c\u00e1lcio precipitado (CCC) \u00e9 usado principalmente como carga em pap\u00e9is de impress\u00e3o, papel para escrever, papel para escrit\u00f3rio e papel para publicidade, exceto papel para cigarro, papel para filtro e pap\u00e9is especiais de baixa gramatura. O carbonato de c\u00e1lcio precipitado (CCP) pode ser aplicado a todos os tipos de papel, mas atualmente \u00e9 usado principalmente como carga em pap\u00e9is de alta qualidade, como papel para cigarro, pap\u00e9is informativos de escrit\u00f3rio (por exemplo, papel para fax, papel para registro de instrumentos, papel para jato de tinta), papel jornal de baixa gramatura e papel revestido de baixa gramatura. Tanto o CCP quanto o CCP t\u00eam suas vantagens como cargas para a fabrica\u00e7\u00e3o de papel, e a escolha do tipo a ser usado depende dos requisitos espec\u00edficos do processo de produ\u00e7\u00e3o do papel.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O GCC tem melhor fluidez que o PCC e economiza o uso de aglutinante em revestimentos, tornando-o adequado para revestimentos com alto teor de s\u00f3lidos e formula\u00e7\u00f5es com propor\u00e7\u00f5es cada vez mais altas.<\/li>\n\n\n\n<li>Devido ao alto custo de fabrica\u00e7\u00e3o do PCC e suas propriedades reol\u00f3gicas relativamente ruins, ele ainda n\u00e3o pode competir com o GCC em aplica\u00e7\u00f5es de revestimento.<\/li>\n<\/ul>\n\n\n\n<p>No entanto, PCC modificado ou nanopart\u00edculas mais finas de carbonato de c\u00e1lcio t\u00eam sido amplamente reconhecidas por suas aplica\u00e7\u00f5es funcionais na ind\u00fastria papeleira. Elas ajudam a conferir propriedades espec\u00edficas ao papel, reduzindo custos. Seu impacto na qualidade do papel inclui os seguintes aspectos:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rigidez<\/h3>\n\n\n\n<p>A rigidez do papel \u00e9 fun\u00e7\u00e3o de sua espessura e m\u00f3dulo de elasticidade. O efeito dos enchimentos na rigidez deve considerar tanto a influ\u00eancia na densidade aparente quanto na resist\u00eancia \u00e0 tra\u00e7\u00e3o.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Quando o teor de enchimento \u00e9 baixo, a adi\u00e7\u00e3o de enchimentos tem pouco efeito na rigidez do papel.<\/li>\n\n\n\n<li>Quando o teor de enchimento aumenta, a rigidez diminui significativamente com o aumento da quantidade de enchimento.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Densidade (Densidade aparente)<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-super-fine-powders.webp\" alt=\"moinho de bolas para p\u00f3s superfinos\" class=\"wp-image-3447\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-super-fine-powders.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-super-fine-powders-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-super-fine-powders-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-super-fine-powders-768x768.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/08\/ball-mill-for-super-fine-powders-12x12.webp 12w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">moinho de bolas para p\u00f3s superfinos<\/figcaption><\/figure>\n\n\n\n<p>A densidade das fibras de papel \u00e9 de 1 grama por cent\u00edmetro c\u00fabico, enquanto a densidade da maioria dos enchimentos fica entre 2,5 e 3,0 gramas por cent\u00edmetro c\u00fabico. Portanto, a adi\u00e7\u00e3o de enchimentos altera a densidade aparente do papel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Resist\u00eancia do papel<\/h3>\n\n\n\n<p>A resist\u00eancia do papel baseia-se na liga\u00e7\u00e3o entre as fibras, e a adi\u00e7\u00e3o de cargas reduz a liga\u00e7\u00e3o entre elas. Portanto, a adi\u00e7\u00e3o excessiva de cargas pode reduzir significativamente a resist\u00eancia do papel. Isso \u00e9 mais percept\u00edvel em termos de resist\u00eancia \u00e0 tra\u00e7\u00e3o, resist\u00eancia \u00e0 dobra e resist\u00eancia \u00e0 ruptura, enquanto a resist\u00eancia ao rasgo \u00e9 menos afetada. O uso de certos aditivos na fabrica\u00e7\u00e3o de papel pode ajudar a reduzir a perda de resist\u00eancia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Melhoria da Opacidade<\/h3>\n\n\n\n<p>O papel sem enchimentos \u00e9 composto por fibras e ar. O ar ocupa os espa\u00e7os vazios entre as fibras e, como o \u00edndice de refra\u00e7\u00e3o do ar difere do da fibra, parte da luz \u00e9 espalhada na interface fibra-ar, conferindo ao papel uma certa opacidade (relativamente baixa). Isso resulta em baixa opacidade na impress\u00e3o.<\/p>\n\n\n\n<p>Ao adicionar carbonato de c\u00e1lcio, que possui um \u00edndice de refra\u00e7\u00e3o maior que o da celulose, o n\u00famero de interfaces de espalhamento no papel aumenta. Especificamente, existem tr\u00eas tipos de interfaces: fibra-ar, enchimento-fibra e enchimento-ar. O maior espalhamento ocorre na interface enchimento-ar, aumentando assim a opacidade do papel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Impacto no desempenho do papel de impress\u00e3o<\/h3>\n\n\n\n<p>Adicionar carbonato de c\u00e1lcio ao papel de impress\u00e3o melhora a capacidade de impress\u00e3o do papel, aumentando o brilho, a lisura, a opacidade e a rigidez. Tamb\u00e9m melhora a afinidade da tinta, a maciez e a estabilidade, o que ajuda a aprimorar a qualidade dos produtos impressos.<\/p>\n\n\n\n<p>\u00c9 claro que adicionar muito enchimento pode levar a alguns efeitos negativos, principalmente a redu\u00e7\u00e3o da resist\u00eancia do papel e do desempenho de colagem. Isso pode resultar em problemas como poeira, borr\u00f5es ou manchas de tinta durante a impress\u00e3o. Os enchimentos tamb\u00e9m podem desgastar as chapas de impress\u00e3o devido ao atrito, mas o uso de PCC pode minimizar esse efeito.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Impacto nas propriedades especiais do papel<\/h3>\n\n\n\n<p>Pesquisas sobre nanocarbonato de c\u00e1lcio mostram que a adi\u00e7\u00e3o de cargas de nanocarbonato de c\u00e1lcio na fabrica\u00e7\u00e3o de papel pode dar ao papel as seguintes caracter\u00edsticas:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ele retarda o processo de envelhecimento do papel, permitindo que ele seja preservado por mais tempo.<\/li>\n\n\n\n<li>Ele pode absorver certas quantidades de luz UV.<\/li>\n\n\n\n<li>Evita que o papel fique amarelado e quebradi\u00e7o, al\u00e9m de proporcionar boas propriedades de isolamento.<\/li>\n<\/ul>\n\n\n\n<p>Quando usado como pigmento de revestimento, o carbonato nanoc\u00e1lcico ajuda a melhorar o brilho, a brancura e a tonalidade da camada de revestimento. Ele garante a pureza dos pigmentos brancos e melhora a opacidade, o brilho e o brilho de impress\u00e3o. Tamb\u00e9m pode alterar as propriedades reol\u00f3gicas dos l\u00edquidos de prepara\u00e7\u00e3o de revestimentos e possibilitar revestimentos funcionais, como isolamento, condutividade e propriedades antibacterianas. O carbonato nanoc\u00e1lcico como carga para a fabrica\u00e7\u00e3o de papel \u00e9 usado principalmente na produ\u00e7\u00e3o de produtos de papel especiais, como fraldas, absorventes higi\u00eanicos, papel fotogr\u00e1fico para jato de tinta, len\u00e7os de papel e membranas respir\u00e1veis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/pt\/contact\/\">P\u00f3 \u00e9pico<\/a><\/h2>\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=\"Moinho de bolas e sistema classificador para carbonato de c\u00e1lcio-EPIC\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/SVjfmdFpEOc?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<p>Epic Powder, com mais de 20 anos de experi\u00eancia na ind\u00fastria de p\u00f3s ultrafinos. Promovemos ativamente o desenvolvimento futuro de p\u00f3s ultrafinos, com foco nos processos de britagem, moagem, classifica\u00e7\u00e3o e modifica\u00e7\u00e3o de p\u00f3s ultrafinos. Entre em contato conosco para uma consulta gratuita e solu\u00e7\u00f5es personalizadas! Nossa equipe de especialistas se dedica a fornecer produtos e servi\u00e7os de alta qualidade para maximizar o valor do seu processamento de p\u00f3s. Epic Powder \u2014 Seu especialista confi\u00e1vel em processamento de p\u00f3s!<\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"16\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/pt\/wp-json\/wp\/v2\/posts\/3499#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/pt\/wp-json\/wp\/v2\/posts\/3499#wpcf7-f16-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"16\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.3\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f16-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"keen-form\">\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Seu nome*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Seu email*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"pnone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Seu Pnone ou Whatsapp*\" value=\"\" type=\"tel\" name=\"pnone\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-subject\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"Sua empresa\" value=\"\" type=\"text\" name=\"your-subject\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"3\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Sua mensagem\" name=\"your-message\"><\/textarea><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Enviar\" \/>\n\t\t<\/p>\n\t<\/div>\n<\/div>\n<style>\n.keen-form div{margin-bottom:5px;}\n.keen-form div p{margin-bottom:0px !important;}\n.one-half,.one-third {\n position: relative;\n margin-right: 4%;\n float: left;\n z-index: 99;\n}\n.one-half { width: 40%; }\n.one-third { width: 30.66%; }\n.last {\n margin-right: 0 !important;\n clear: right;\nwidth: 40%;\n}\n@media only screen and (max-width: 767px) {\n .one-half, .one-third {\n width: 90%;\n margin-right: 0;\n }\n}\n<\/style><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"pt\"\/><\/form>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Atualmente, a quantidade de cargas e pigmentos utilizados na fabrica\u00e7\u00e3o de papel fica atr\u00e1s apenas da fibra como uma das mat\u00e9rias-primas mais importantes. As cargas comuns na fabrica\u00e7\u00e3o de papel incluem carbonato de c\u00e1lcio, talco, caulim, wollastonita, bentonita e outras. \u00c0 medida que o processo \u00e1cido de fabrica\u00e7\u00e3o de papel gradualmente se desloca para processos neutros e alcalinos, o carbonato de c\u00e1lcio, como uma importante mat\u00e9ria-prima em [\u2026]<\/p>","protected":false},"author":1,"featured_media":3502,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","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":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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