{"id":3543,"date":"2025-11-14T15:45:12","date_gmt":"2025-11-14T07:45:12","guid":{"rendered":"https:\/\/quartz-grinding.epic-powder.com\/?p=3543"},"modified":"2025-11-18T16:03:55","modified_gmt":"2025-11-18T08:03:55","slug":"how-to-achieve-precise-classification-of-ultrafine-quartz-powder","status":"publish","type":"post","link":"https:\/\/quartz-grinding.epic-powder.com\/fr\/how-to-achieve-precise-classification-of-ultrafine-quartz-powder\/","title":{"rendered":"Comment obtenir une classification pr\u00e9cise de la poudre de quartz ultrafine ?"},"content":{"rendered":"<p><a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/machines\/\">poudre de quartz ultrafine<\/a> Le quartz (D50 2\u201310 \u03bcm, D90 &lt; 15 \u03bcm) est largement utilis\u00e9 dans l&#039;encapsulation \u00e9lectronique, la fonderie de pr\u00e9cision, le verre optique, les rev\u00eatements, la c\u00e9ramique de quartz, les mat\u00e9riaux semi-conducteurs et d&#039;autres industries de pointe. Dans ces applications, la distribution granulom\u00e9trique, la morphologie, la puret\u00e9 et la stabilit\u00e9 des particules d\u00e9terminent directement les performances du mat\u00e9riau final. Face \u00e0 la demande croissante de poudre de quartz de haute puret\u00e9, la ma\u00eetrise d&#039;un classement pr\u00e9cis, contr\u00f4lable et hautement reproductible est devenue un enjeu technique majeur pour les entreprises de traitement des poudres. Pour obtenir un classement pr\u00e9cis de la poudre de quartz ultrafine, les lignes de production s&#039;appuient principalement sur des classificateurs pneumatiques, notamment les classificateurs multirotors horizontaux ou verticaux. Ces machines exploitent la dynamique des fluides (force d&#039;inertie, force centrifuge et tra\u00een\u00e9e a\u00e9rodynamique) pour s\u00e9parer les particules de diff\u00e9rentes tailles avec une grande pr\u00e9cision.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/05\/high-purity-quartz-1024x680.webp\" alt=\"quartz de haute puret\u00e9\" class=\"wp-image-3171\"\/><figcaption class=\"wp-element-caption\">quartz de haute puret\u00e9<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">D\u00e9fis techniques dans <a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/machines\/horizontal-air-classifier\/\">Classification<\/a> de poudre de quartz ultrafine <\/h2>\n\n\n\n<p>Le quartz (SiO\u2082) poss\u00e8de plusieurs caract\u00e9ristiques qui rendent difficile une classification pr\u00e9cise\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Duret\u00e9 \u00e9lev\u00e9e (Mohs 7)<\/strong><br>\u2192 Apr\u00e8s broyage, les particules sont irr\u00e9guli\u00e8res et anguleuses ; leur forme influence fortement les performances de classification.<\/li>\n\n\n\n<li><strong>Haute densit\u00e9 (2,65 g\/cm\u00b3)<\/strong><br>\u2192 La vitesse de s\u00e9dimentation est rapide ; les particules fines sont facilement pi\u00e9g\u00e9es parmi les particules plus grossi\u00e8res.<\/li>\n\n\n\n<li><strong>Tendance \u00e0 l&#039;agglom\u00e9ration fine<\/strong><br>\u2192 Les particules ultrafines inf\u00e9rieures \u00e0 5 \u03bcm ont tendance \u00e0 former des agglom\u00e9rats mous en raison de l&#039;\u00e9lectricit\u00e9 statique et des forces de Van der Waals.<\/li>\n\n\n\n<li><strong>Exigences de haute puret\u00e9<\/strong><br>\u2192 Le quartz de qualit\u00e9 \u00e9lectronique doit \u00e9viter toute contamination m\u00e9tallique ; le syst\u00e8me de classification doit \u00eatre enti\u00e8rement en c\u00e9ramique.<\/li>\n<\/ul>\n\n\n\n<p>Par cons\u00e9quent, garantir simultan\u00e9ment une distribution granulom\u00e9trique \u00e9troite et une puret\u00e9 \u00e9lev\u00e9e constitue le d\u00e9fi le plus difficile dans la classification industrielle du quartz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Principe de fonctionnement du <a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/machines\/vertical-air-classifier\/\">Classificateur d&#039;air<\/a><\/h2>\n\n\n\n<p>La classification est un processus dynamique de s\u00e9lection de la taille des particules\u00a0:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Dispersion et alimentation<\/h3>\n\n\n\n<p>La poudre de quartz est dispers\u00e9e par le flux d&#039;air et p\u00e9n\u00e8tre uniform\u00e9ment dans la chambre de classification.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u00c9quilibre des forces<\/h3>\n\n\n\n<p>\u00c0 l&#039;int\u00e9rieur de la zone de classification, chaque particule est contr\u00f4l\u00e9e par deux forces oppos\u00e9es :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Force centrifuge<\/strong><br>G\u00e9n\u00e9r\u00e9 par le rotor du classificateur \u00e0 grande vitesse ; repousse les particules vers l&#039;ext\u00e9rieur.<br>Proportionnel \u00e0 la masse des particules et \u00e0 la vitesse du rotor\u00b2.<\/li>\n\n\n\n<li><strong>tra\u00een\u00e9e a\u00e9rodynamique (force du flux d&#039;air)<\/strong><br>G\u00e9n\u00e9r\u00e9 par l&#039;air \u00e0 grande vitesse passant \u00e0 travers les pales du rotor ; attire les particules vers l&#039;int\u00e9rieur, en direction de la sortie de poudre fine.<br>Proportionnel \u00e0 la surface des particules et \u00e0 la vitesse de l&#039;air.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Formation pr\u00e9cise du point de coupe<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Particules fines (produit qualifi\u00e9)<\/strong><br>\u2192 Plus l\u00e9gers, subissent une force de tra\u00een\u00e9e sup\u00e9rieure \u00e0 la force centrifuge, passent \u00e0 travers les pales du rotor et sont collect\u00e9s sous forme de fine poudre.<\/li>\n\n\n\n<li><strong>Particules grossi\u00e8res (produit non conforme)<\/strong><br>\u2192 Plus lourd, davantage affect\u00e9 par la force centrifuge, projet\u00e9 vers l&#039;ext\u00e9rieur, puis collect\u00e9 ou renvoy\u00e9 pour \u00eatre rebroy\u00e9 sous forme de poudre grossi\u00e8re.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2024\/01\/HTS.webp\" alt=\"Classificateur d&#039;air horizontal\" class=\"wp-image-1863\" srcset=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2024\/01\/HTS.webp 800w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2024\/01\/HTS-300x225.webp 300w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2024\/01\/HTS-768x576.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\"> Classificateur d&#039;air horizontal <\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Comparaison des m\u00e9thodes de classification courantes<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>M\u00e9thode de classification<\/th><th>Avantages<\/th><th>Inconv\u00e9nients<\/th><\/tr><\/thead><tbody><tr><td>Tamisage<\/td><td>Simple et peu co\u00fbteux<\/td><td>Ne supporte pas les particules &lt;45 \u03bcm\u00a0; colmatage important<\/td><\/tr><tr><td>S\u00e9paration par cyclone<\/td><td>structure continue et simple<\/td><td>Convient uniquement pour une classification grossi\u00e8re (10\u201350 \u03bcm)<\/td><\/tr><tr><td>S\u00e9dimentation<\/td><td>Haute pr\u00e9cision<\/td><td>Faible efficacit\u00e9 ; influenc\u00e9e par la viscosit\u00e9 du liquide<\/td><\/tr><tr><td>classificateur \u00e0 turbine \u00e0 air<\/td><td>Haute pr\u00e9cision, automatis\u00e9 ; point de coupure au niveau du microm\u00e8tre<\/td><td>Co\u00fbt de l&#039;\u00e9quipement plus \u00e9lev\u00e9\u00a0; r\u00e9glage des param\u00e8tres requis<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Le classificateur d&#039;air dynamique est la seule m\u00e9thode pratique capable d&#039;atteindre un D50 de 1 \u00e0 35 \u03bcm et un Span &lt; 1,2 dans la production de quartz ultrafin \u00e0 l&#039;\u00e9chelle industrielle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment les classificateurs d&#039;air dynamiques parviennent \u00e0 une classification pr\u00e9cise<\/h2>\n\n\n\n<p>Un classificateur pneumatique dynamique se compose d&#039;un rotor de turbine \u00e0 grande vitesse, d&#039;un syst\u00e8me de guidage du flux, d&#039;une chambre de classification et d&#039;un syst\u00e8me de collecte des poudres. La classification est contr\u00f4l\u00e9e par l&#039;\u00e9quilibre entre la force centrifuge et la r\u00e9sistance a\u00e9rodynamique.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Processus de classification<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>La poudre est transport\u00e9e dans la zone de classification par un flux d&#039;air.<\/li>\n\n\n\n<li>Le rotor tourne \u00e0 une vitesse de 3000 \u00e0 12000 tr\/min, cr\u00e9ant une force centrifuge<\/li>\n\n\n\n<li>Particules grossi\u00e8res \u2192 renvoy\u00e9es pour un broyage ult\u00e9rieur<\/li>\n\n\n\n<li>Les particules fines \u2192 surmontent la force centrifuge et sont entra\u00een\u00e9es par le courant d&#039;air<\/li>\n\n\n\n<li>Les param\u00e8tres de vitesse du rotor et de d\u00e9bit d&#039;air permettent des dimensions de coupe pr\u00e9cises et r\u00e9glables.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Param\u00e8tres cl\u00e9s de contr\u00f4le pour une classification pr\u00e9cise<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Vitesse du rotor (param\u00e8tre principal)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vitesse plus \u00e9lev\u00e9e \u2192 taille de coupe plus petite<\/li>\n\n\n\n<li>Plage de r\u00e9gime typique\u00a0: 3\u00a0000 \u00e0 12\u00a0000 tr\/min<\/li>\n\n\n\n<li>Quartz de qualit\u00e9 \u00e9lectronique\u00a0: 8\u00a0000 \u00e0 12\u00a0000 tr\/min<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. D\u00e9bit d&#039;air du syst\u00e8me et pression n\u00e9gative<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9termine la stabilit\u00e9 de la suspension de particules<\/li>\n\n\n\n<li>D\u00e9bit d&#039;air plus \u00e9lev\u00e9 \u2192 classification plus fine<\/li>\n\n\n\n<li>Vitesse typique de l&#039;air : 15\u201325 m\/s<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. D\u00e9bit d&#039;alimentation<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Charge plus \u00e9lev\u00e9e \u2192 pr\u00e9cision de classification plus faible<\/li>\n\n\n\n<li>Charge de fonctionnement id\u00e9ale\u00a0: 60 \u00e0 801\u00a0TP3T de capacit\u00e9 nominale<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Conception anti-contamination en c\u00e9ramique<\/h3>\n\n\n\n<p>Y compris:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rev\u00eatements enti\u00e8rement en c\u00e9ramique<\/li>\n\n\n\n<li>Roue classificatrice en zircone<\/li>\n\n\n\n<li>roulements en c\u00e9ramique<\/li>\n<\/ul>\n\n\n\n<p>\u2192 La contamination par Fe\/Cr\/Al peut \u00eatre r\u00e9duite \u00e0 &lt;10 ppm<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Classification secondaire ou \u00e0 plusieurs \u00e9tapes<\/h3>\n\n\n\n<p>Utilis\u00e9 pour les applications PSD ultra-\u00e9troites, telles que\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Charges de quartz de haute puret\u00e9<\/li>\n\n\n\n<li>c\u00e9ramiques de quartz pi\u00e9zo\u00e9lectriques<\/li>\n\n\n\n<li>mat\u00e9riaux d&#039;encapsulation PV<\/li>\n\n\n\n<li>Mat\u00e9riaux micro\u00e9lectroniques semi-conducteurs<\/li>\n<\/ul>\n\n\n\n<p>Peut r\u00e9aliser <strong>\u00c9tendue 0,9\u20131,1<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>Dans le traitement des poudres de quartz ultrafines, une classification pr\u00e9cise est non seulement essentielle pour am\u00e9liorer la qualit\u00e9 du produit, mais aussi la cl\u00e9 pour acc\u00e9der \u00e0 des domaines de pointe tels que l&#039;\u00e9lectronique, l&#039;optique et les mat\u00e9riaux de haute puret\u00e9.<\/p>\n\n\n\n<p>En adoptant <a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/contact\/\">Poudre \u00e9pique<\/a>Gr\u00e2ce \u00e0 ses solutions professionnelles d&#039;ing\u00e9nierie des poudres ultrafines et \u00e0 l&#039;\u00e9quipement de ses lignes de production avec des classificateurs \u00e0 air \u00e0 haut rendement, les fabricants peuvent obtenir un contr\u00f4le stable du D50, un r\u00e9tr\u00e9cissement pr\u00e9cis du D97, une distribution granulom\u00e9trique uniforme et une capacit\u00e9 de production fiable.<\/p>\n\n\n\n<p>Choisir Epic Powder + sa technologie de classification pneumatique avanc\u00e9e, c&#039;est choisir une stabilit\u00e9, une puret\u00e9 et une valeur ajout\u00e9e sup\u00e9rieures, offrant ainsi une base solide pour les applications haut de gamme dans les mat\u00e9riaux \u00e9lectroniques, les nouvelles \u00e9nergies et la chimie fine.<\/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 decoding=\"async\" width=\"602\" height=\"602\" src=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang.webp\" alt=\"Jason Wang\" class=\"wp-image-3541\" style=\"width:150px;height:150px\" srcset=\"https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang.webp 602w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang-300x300.webp 300w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang-150x150.webp 150w, https:\/\/quartz-grinding.epic-powder.com\/wp-content\/uploads\/2025\/11\/Jason-Wang-12x12.webp 12w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><\/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>Merci de votre lecture. J&#039;esp\u00e8re que cet article vous sera utile. N&#039;h\u00e9sitez pas \u00e0 laisser un commentaire ci-dessous. Vous pouvez \u00e9galement me contacter. <a href=\"https:\/\/quartz-grinding.epic-powder.com\/fr\/contact\/\">Zelda<\/a> Pour toute question suppl\u00e9mentaire, veuillez contacter un repr\u00e9sentant du service client\u00e8le en ligne.<\/p>\n<cite>                                                                                                                                                                     \u2014 Publi\u00e9 par <a href=\"https:\/\/www.linkedin.com\/company\/76603359\/admin\/dashboard\/\">Jason Wang<\/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-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=\"\/fr\/wp-json\/wp\/v2\/posts\/3543#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/fr\/wp-json\/wp\/v2\/posts\/3543#wpcf7-f16-o1\">\n<div style=\"display: none;\">\n<input type=\"hidden\" name=\"_wpcf7\" value=\"16\" \/>\n<input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.0.6\" \/>\n<input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/>\n<input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f16-o1\" \/>\n<input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/>\n<input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/div>\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=\"Votre nom*\" 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=\"Votre 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=\"Votre 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=\"Votre entreprise\" 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=\"Votre message\" 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=\"Soumettre\" \/>\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: 48%; }\n.one-third { width: 30.66%; }\n.last {\n margin-right: 0 !important;\n clear: right;\n}\n@media only screen and (max-width: 767px) {\n .one-half, .one-third {\n width: 100%;\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=\"fr\"\/><\/form>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>La poudre de quartz ultrafine (D50 2\u201310 \u03bcm, D90 &lt; 15 \u03bcm) est largement utilis\u00e9e dans l&#039;encapsulation \u00e9lectronique, la fonderie de pr\u00e9cision, le verre optique, les rev\u00eatements, la c\u00e9ramique de quartz, les mat\u00e9riaux semi-conducteurs et d&#039;autres industries de pointe. Dans ces applications, la distribution granulom\u00e9trique, la morphologie des particules, la puret\u00e9 et la stabilit\u00e9 d\u00e9terminent directement les performances du mat\u00e9riau final. Face \u00e0 la demande croissante de poudre de quartz de haute puret\u00e9 [\u2026]<\/p>","protected":false},"author":1,"featured_media":3171,"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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