{"id":14880,"date":"2026-01-30T05:51:50","date_gmt":"2026-01-30T05:51:50","guid":{"rendered":"https:\/\/www.ball-mill-classifiers.com\/?p=14880"},"modified":"2026-01-30T05:51:52","modified_gmt":"2026-01-30T05:51:52","slug":"can-a-ball-mill-achieve-2500-mesh-in-ultrafine-grinding-of-granite","status":"publish","type":"post","link":"https:\/\/www.ball-mill-classifiers.com\/fr\/can-a-ball-mill-achieve-2500-mesh-in-ultrafine-grinding-of-granite\/","title":{"rendered":"Un broyeur \u00e0 boulets peut-il atteindre une granulom\u00e9trie de 2500 mesh lors du broyage ultrafin du granit\u00a0?"},"content":{"rendered":"<p id=\"h-\">Le terme \u00ab\u00a0maille 2500\u00a0\u00bb d\u00e9signe un tamis comportant 2500 ouvertures par pouce, ce qui correspond \u00e0 une granulom\u00e9trie moyenne d&#039;environ 5\u00a0\u00b5m (plus pr\u00e9cis\u00e9ment, le D97 des mat\u00e9riaux passant \u00e0 travers un tamis de maille 2500 se situe g\u00e9n\u00e9ralement entre 4 et 6\u00a0\u00b5m, selon la pr\u00e9cision de classification). La capacit\u00e9 \u00e0 produire de mani\u00e8re stable une poudre ultrafine de granite avec un D97 \u2264 5\u00a0\u00b5m pr\u00e9sente un int\u00e9r\u00eat consid\u00e9rable pour des applications telles que les charges fonctionnelles pour le b\u00e2timent, les rev\u00eatements haut de gamme, les mati\u00e8res premi\u00e8res c\u00e9ramiques de pr\u00e9cision et les mat\u00e9riaux d&#039;encapsulation \u00e9lectronique. Le granite, roche ign\u00e9e acide typique, est principalement compos\u00e9 de quartz (duret\u00e9 7), de feldspath (duret\u00e9 6) et de faibles quantit\u00e9s de mica, avec une duret\u00e9 Mohs globale g\u00e9n\u00e9ralement comprise entre 6 et 7. Sa teneur en quartz varie g\u00e9n\u00e9ralement de 25% \u00e0 40%. Cette duret\u00e9 \u00e9lev\u00e9e, combin\u00e9e \u00e0 une forte abrasivit\u00e9, fait du granite l&#039;un des mat\u00e9riaux reconnus comme \u00ab\u00a0difficiles \u00e0 broyer\u00a0\u00bb dans le domaine du broyage ultrafin.<\/p>\n\n\n\n<p>Point de vue principal\u00a0: L\u2019utilisation exclusive d\u2019un broyeur \u00e0 billes \u00e0 d\u00e9bordement ou \u00e0 grille classique rend presque impossible l\u2019obtention \u00e9conomique et stable d\u2019une granulom\u00e9trie de 2\u00a0500 mesh (D97 \u2248 5\u00a0\u00b5m). Cependant, cela est techniquement r\u00e9alisable avec un broyeur \u00e0 billes \u00e0 grille. <a href=\"https:\/\/www.ball-mill-classifiers.com\/fr\/produit\/ball-mill-classification-production-line\/\">syst\u00e8me de broyage ultrafin en circuit ferm\u00e9<\/a> \u00e9quip\u00e9 d&#039;un \u00e9quipement de classification ultrafine \u00e0 haut rendement, de m\u00e9dias de broyage optimis\u00e9s et de param\u00e8tres de processus.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2026\/01\/ball-mill-for-granite-ultrafine-grinding.webp\" alt=\"ball-mill-for-granite-ultrafine-grinding\" class=\"wp-image-14869\" srcset=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2026\/01\/ball-mill-for-granite-ultrafine-grinding.webp 800w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2026\/01\/ball-mill-for-granite-ultrafine-grinding-300x200.webp 300w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2026\/01\/ball-mill-for-granite-ultrafine-grinding-768x512.webp 768w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2026\/01\/ball-mill-for-granite-ultrafine-grinding-18x12.webp 18w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2026\/01\/ball-mill-for-granite-ultrafine-grinding-600x400.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-particle-size-challenges-physical-limits-of-2500-mesh\">D\u00e9fis li\u00e9s \u00e0 la granulom\u00e9trie\u00a0: limites physiques d\u2019une granulom\u00e9trie de 2500 mesh<\/h2>\n\n\n\n<p>Les principaux m\u00e9canismes de broyage d&#039;un broyeur \u00e0 boulets sont <strong>impact + attrition<\/strong>\u00c0 mesure que la taille des particules diminue continuellement, plusieurs limitations physiques importantes apparaissent\u00a0:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Forte augmentation de la surface<\/strong>La r\u00e9duction de la taille des particules de plusieurs dizaines de microns \u00e0 5 \u03bcm augmente la surface sp\u00e9cifique de plusieurs dizaines de fois, renfor\u00e7ant consid\u00e9rablement les forces de van der Waals et les forces \u00e9lectrostatiques entre les particules, ce qui entra\u00eene une forte agglom\u00e9ration.<\/li>\n\n\n\n<li><strong>\u00ab \u00c9quilibre dynamique broyage-agglom\u00e9ration \u00bb<\/strong>Lorsque la taille des particules atteint la gamme de quelques microns \u00e0 submicron, le taux d&#039;agglom\u00e9ration des fines particules nouvellement g\u00e9n\u00e9r\u00e9es approche ou m\u00eame d\u00e9passe le taux de broyage, formant ce que l&#039;on appelle une \u00ab taille de particule limite \u00bb ou un \u00ab \u00e9tat d&#039;\u00e9quilibre \u00bb.<\/li>\n\n\n\n<li><strong>Augmentation exponentielle de la consommation sp\u00e9cifique d&#039;\u00e9nergie<\/strong>D&#039;apr\u00e8s la loi de Rittinger, l&#039;\u00e9nergie de broyage est proportionnelle \u00e0 la nouvelle surface cr\u00e9\u00e9e. En dessous de 10 \u03bcm, l&#039;\u00e9nergie sp\u00e9cifique requise pour une r\u00e9duction de taille suppl\u00e9mentaire augmente consid\u00e9rablement, souvent selon une relation exponentielle.<\/li>\n<\/ol>\n\n\n\n<p>Par cons\u00e9quent, le simple fait d&#039;allonger le temps de broyage ou d&#039;augmenter le rapport billes\/mat\u00e9riau a un effet limit\u00e9 sur l&#039;obtention d&#039;une granulom\u00e9trie de 2500 mesh ; au contraire, cela conduit souvent \u00e0 un surbroyage excessif, \u00e0 une agglom\u00e9ration accrue et \u00e0 un gaspillage d&#039;\u00e9nergie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-technical-pathways-to-achieve-2500-mesh\">Principaux axes techniques pour atteindre un maillage de 2500.<\/h2>\n\n\n\n<p>Pour produire de mani\u00e8re stable de la poudre de granit de 2500 mesh \u00e0 l&#039;aide d&#039;un broyeur \u00e0 boulets, un <strong>syst\u00e8me de broyage ultrafin \u00e0 circuit ferm\u00e9 efficace<\/strong> doit \u00eatre \u00e9tabli. Les composantes essentielles sont les suivantes\u00a0:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-closed-circuit-circulation-system-most-critical\">Syst\u00e8me de circulation en circuit ferm\u00e9 (le plus critique)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Doit \u00eatre \u00e9quip\u00e9 d&#039;un<a href=\"https:\/\/www.ball-mill-classifiers.com\/fr\/categorie-produit\/air-classifier\/\"> classificateur d&#039;air \u00e0 turbine ultrafine<\/a> (capable de 8000 \u00e0 20000 tr\/min) ou un classificateur ultrafin multirotor.<\/li>\n\n\n\n<li>Le point de coupure de classification doit \u00eatre contr\u00f4l\u00e9 avec pr\u00e9cision dans la plage de 4 \u00e0 7 \u03bcm, en renvoyant les particules grossi\u00e8res au broyeur \u00e0 billes pour un broyage plus pouss\u00e9 tout en \u00e9vacuant les particules fines comme produit fini.<\/li>\n\n\n\n<li>Flux typique : Broyeur \u00e0 boulets \u2192 \u00e9l\u00e9vateur\/convoyeur \u00e0 vis \u2192 classificateur ultrafin \u2192 collecte du produit (cyclone + filtre \u00e0 sac) \u2192 retour grossier au broyeur \u00e0 boulets.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier.webp\" alt=\"ITC powder air classifier\" class=\"wp-image-14787\" srcset=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier.webp 800w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier-300x300.webp 300w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier-100x100.webp 100w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier-768x768.webp 768w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier-12x12.webp 12w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier-60x60.webp 60w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/12\/ITC-powder-air-classifier-600x600.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-optimization-of-grinding-media\">Optimisation des milieux de broyage<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prioriser <strong>m\u00e9dias de broyage \u00e0 haute densit\u00e9 et de petit diam\u00e8tre<\/strong>: billes de zircone (densit\u00e9 \u2248 6,0 g\/cm\u00b3) ou billes d&#039;alumine (densit\u00e9 \u2248 3,6\u20133,9 g\/cm\u00b3), g\u00e9n\u00e9ralement de tailles \u03c63\u201310 mm.<\/li>\n\n\n\n<li>Utiliser <strong>ratios de notation \u00e0 plusieurs niveaux<\/strong> (par exemple, \u03c610 : \u03c66 : \u03c63 = 3 : 4 : 3 ou similaire) pour am\u00e9liorer l&#039;efficacit\u00e9 du broyage et obtenir une distribution granulom\u00e9trique plus uniforme.<\/li>\n\n\n\n<li>\u00c9vitez les billes d&#039;acier ordinaires (duret\u00e9 insuffisante et contamination importante).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-application-of-grinding-aids-and-dispersants\">Application d&#039;adjuvants de broyage et de dispersants<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ajouter les quantit\u00e9s appropri\u00e9es de <strong>\u00e0 base de polycarboxylate, alcanolamine, tri\u00e9thanolamine, propyl\u00e8ne glycol<\/strong>, etc. (dosage g\u00e9n\u00e9ralement 0,05%\u20130,3%) pour r\u00e9duire efficacement l&#039;agglom\u00e9ration des particules, am\u00e9liorer la fluidit\u00e9 et minimiser l&#039;accumulation sur les parois du syst\u00e8me.<\/li>\n\n\n\n<li>Pour les granits particuli\u00e8rement difficiles \u00e0 broyer, l&#039;utilisation combin\u00e9e de tensioactifs et d&#039;adjuvants de broyage peut \u00eatre n\u00e9cessaire.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-advantages-and-limitations-analysis\">Analyse des avantages et des limites<\/h2>\n\n\n\n<p><strong>Avantages<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Compar\u00e9 aux broyeurs \u00e0 agitation ou aux broyeurs \u00e0 jet, le broyeur \u00e0 boulets offre <strong>grande capacit\u00e9 unitaire<\/strong> (plusieurs \u00e0 plusieurs dizaines de tonnes par heure) et <strong>co\u00fbts d&#039;investissement et d&#039;entretien relativement plus faibles<\/strong>.<\/li>\n\n\n\n<li>Cette technologie est \u00e9prouv\u00e9e, facile \u00e0 utiliser pour les op\u00e9rateurs et les pi\u00e8ces de rechange sont facilement disponibles.<\/li>\n<\/ul>\n\n\n\n<p><strong>Principales limitations<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Consommation d&#039;\u00e9nergie extr\u00eamement \u00e9lev\u00e9e<\/strong>La production de poudre de granit D97 \u2248 5 \u03bcm entra\u00eene g\u00e9n\u00e9ralement une consommation d&#039;\u00e9nergie sp\u00e9cifique au syst\u00e8me de\u00a0: <strong>180\u2013350 kWh\/t<\/strong> ou plus \u00e9lev\u00e9, d\u00e9passant largement le broyage \u00e0 boulets de ciment ordinaire (20 \u00e0 40 kWh\/t).<\/li>\n\n\n\n<li><strong>Usure s\u00e9v\u00e8re et contamination<\/strong>La duret\u00e9 \u00e9lev\u00e9e du quartz contenu dans le granit provoque une abrasion importante des billes d&#039;acier et des rev\u00eatements en acier au mangan\u00e8se, ce qui entra\u00eene facilement une accumulation excessive d&#039;impuret\u00e9s de fer. L&#039;utilisation de rev\u00eatements et de billes enti\u00e8rement en c\u00e9ramique augmente consid\u00e9rablement les co\u00fbts.<\/li>\n\n\n\n<li><strong>Complexit\u00e9 du syst\u00e8me<\/strong>: N\u00e9cessite des installations de soutien telles que la classification \u00e0 haute efficacit\u00e9, la collecte des poussi\u00e8res et le retour des mat\u00e9riaux, ce qui entra\u00eene des flux de processus plus longs et une difficult\u00e9 de contr\u00f4le accrue.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-comparison-with-alternative-technologies\">Comparaison avec les technologies alternatives<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Type d&#039;\u00e9quipement<\/th><th>Finesse typique (D97)<\/th><th>\u00c9nergie sp\u00e9cifique (kWh\/t)<\/th><th>Capacit\u00e9 unitaire<\/th><th>Co\u00fbt d&#039;investissement<\/th><th>\u00c9valuation de l&#039;ad\u00e9quation du granit<\/th><\/tr><\/thead><tbody><tr><td>Broyeur \u00e0 billes conventionnel + classification ultrafine<\/td><td>4\u20138 \u03bcm<\/td><td>180\u2013350<\/td><td>Grand<\/td><td>Moyen<\/td><td>Faisable, mais forte consommation d&#039;\u00e9nergie<\/td><\/tr><tr><td>Broyeur \u00e0 agitation vertical\/horizontal<\/td><td>1\u20135 \u03bcm<\/td><td>80\u2013200<\/td><td>Moyen\u2013Petit<\/td><td>Haut<\/td><td>Efficacit\u00e9 accrue\u00a0; courant dominant pour les produits ultrafins<\/td><\/tr><tr><td>broyeur vibrant<\/td><td>2\u20136 \u03bcm<\/td><td>150\u2013300<\/td><td>Petit<\/td><td>Moyen<\/td><td>Convient aux petits lots\/\u00e0 l&#039;\u00e9chelle du laboratoire<\/td><\/tr><tr><td>broyeur \u00e0 jet oppos\u00e9 \u00e0 lit fluidis\u00e9<\/td><td>1\u20134 \u03bcm<\/td><td>400\u20131000+<\/td><td>Petites et moyennes<\/td><td>Tr\u00e8s haut<\/td><td>Puret\u00e9 maximale, mais co\u00fbt extr\u00eamement \u00e9lev\u00e9.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Du point de vue de l&#039;efficacit\u00e9 \u00e9nerg\u00e9tique et de l&#039;\u00e9conomie, <strong>broyeurs verticaux \u00e0 agitation ultrafine<\/strong> sont actuellement le choix privil\u00e9gi\u00e9 pour la production industrielle de poudre de granit inf\u00e9rieure \u00e0 5 \u03bcm. Cependant, un broyeur \u00e0 billes optimis\u00e9 associ\u00e9 \u00e0 un syst\u00e8me de classification en circuit ferm\u00e9 reste comp\u00e9titif dans les sc\u00e9narios n\u00e9cessitant un d\u00e9bit \u00e9lev\u00e9 et une finesse mod\u00e9r\u00e9e (D97 5\u20138 \u03bcm).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><a href=\"https:\/\/www.ball-mill-classifiers.com\/fr\/contact-us\/\">Conclusion<\/a><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"560\" src=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/10\/ball-mill-12.webp\" alt=\"ball mill 12\" class=\"wp-image-14701\" srcset=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/10\/ball-mill-12.webp 800w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/10\/ball-mill-12-300x210.webp 300w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/10\/ball-mill-12-768x538.webp 768w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/10\/ball-mill-12-18x12.webp 18w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/10\/ball-mill-12-600x420.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">broyeur \u00e0 boulets 12<\/figcaption><\/figure>\n\n\n\n<p>Un broyeur \u00e0 boulets peut <strong>th\u00e9oriquement<\/strong> produire une poudre ultrafine de granite de granulom\u00e9trie 2500 mesh (D97 \u2248 5 \u03bcm), mais cela n\u00e9cessite <strong>condition pr\u00e9alable<\/strong> d&#039;\u00eatre \u00e9quip\u00e9 d&#039;un classificateur d&#039;air ultrafin \u00e0 haut rendement pour former un syst\u00e8me en circuit ferm\u00e9, combin\u00e9 \u00e0 des m\u00e9dias de broyage en c\u00e9ramique, des adjuvants de broyage et un contr\u00f4le pr\u00e9cis du processus.<\/p>\n\n\n\n<p id=\"h-\">Dans les applications industrielles concr\u00e8tes, il est recommand\u00e9 de r\u00e9aliser une analyse technico-\u00e9conomique approfondie, prenant en compte les exigences sp\u00e9cifiques de d\u00e9bit, de finesse, de co\u00fbt de l&#039;\u00e9lectricit\u00e9 et de valeur ajout\u00e9e du produit. Pour les projets dont la production annuelle se chiffre en dizaines de milliers de tonnes et dont les objectifs de finesse se situent entre 5 et 8 \u00b5m, un syst\u00e8me de broyage \u00e0 boulets en circuit ferm\u00e9 optimis\u00e9 reste \u00e9conomiquement viable. Si la finesse cible impose une valeur D97 \u2264 4 \u00b5m ou si la sensibilit\u00e9 aux impuret\u00e9s de fer est extr\u00eame, il est pr\u00e9f\u00e9rable d&#039;opter pour des broyeurs \u00e0 agitation ou des broyeurs \u00e0 jet.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-rounded\"><img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"721\" src=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/11\/Emily-Chen.webp\" alt=\"Emily Chen\" class=\"wp-image-14761\" style=\"width:150px;height:150px\" srcset=\"https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/11\/Emily-Chen.webp 721w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-300x300.webp 300w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-100x100.webp 100w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-12x12.webp 12w, https:\/\/www.ball-mill-classifiers.com\/wp-content\/uploads\/2025\/11\/Emily-Chen-600x600.webp 600w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-style-large is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u00ab Merci de votre lecture. J\u2019esp\u00e8re que cet article vous sera utile. N\u2019h\u00e9sitez pas \u00e0 laisser un commentaire ci-dessous. Pour toute question, vous pouvez \u00e9galement contacter le service client en ligne de Zelda. \u00bb<\/p>\n<cite>                                                                                                                        \u2014 Publi\u00e9 par <a href=\"https:\/\/www.linkedin.com\/company\/76603359\/admin\/dashboard\/\">Emily Chen<\/a><\/cite><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\"\/>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f14067-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"14067\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/fr\/wp-json\/wp\/v2\/posts\/14880#wpcf7-f14067-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" 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[\u2026]<\/p>","protected":false},"author":1,"featured_media":14752,"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":"","ast-disable-related-posts":"","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":"","background-image":"","background-repeat":"repeat","background-position":"center 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