{"id":3024,"date":"2025-04-03T11:54:38","date_gmt":"2025-04-03T03:54:38","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?p=3024"},"modified":"2025-04-03T11:54:41","modified_gmt":"2025-04-03T03:54:41","slug":"how-to-determine-ultrafine-calcium-carbonate-indicators","status":"publish","type":"post","link":"https:\/\/calcium-carbonate.epic-powder.com\/fr\/how-to-determine-ultrafine-calcium-carbonate-indicators\/","title":{"rendered":"Comment d\u00e9terminer les indicateurs de carbonate de calcium ultrafins ?"},"content":{"rendered":"<p>Pour <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/ultrafine-powder-dry-grinding\/\">carbonate de calcium ultrafin<\/a>, la taille des particules, la surface sp\u00e9cifique, la forme cristalline et la valeur d&#039;absorption d&#039;huile sont les indicateurs techniques les plus importants, affectant directement ses performances d&#039;application.<\/p>\n\n\n\n<p>Bien s\u00fbr, cela ne nie pas l\u2019importance d\u2019autres indicateurs ; c\u2019est juste que d\u2019autres indicateurs sont relativement plus faciles \u00e0 r\u00e9aliser dans les applications industrielles.<\/p>\n\n\n\n<p>Cependant, pour les applications sp\u00e9cialis\u00e9es, les diff\u00e9rentes utilisations privil\u00e9gient diff\u00e9rents indicateurs techniques du carbonate de calcium ultrafin. Les exigences varient et ne doivent pas \u00eatre trait\u00e9es de la m\u00eame mani\u00e8re.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/calcium-carbonate-powder-1.webp\" alt=\"poudre de carbonate de calcium\" class=\"wp-image-2956\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/calcium-carbonate-powder-1.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/calcium-carbonate-powder-1-300x225.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/calcium-carbonate-powder-1-768x576.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2024\/04\/calcium-carbonate-powder-1-16x12.webp 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">poudre de carbonate de calcium<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Taille des particules et surface sp\u00e9cifique<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Indicateurs de base du carbonate de calcium<\/h3>\n\n\n\n<p>L&#039;obtention d&#039;une granulom\u00e9trie primaire de 0,02 \u00e0 0,1 \u03bcm est un indicateur fondamental de la qualit\u00e9 ultrafine du carbonate de calcium. C&#039;est essentiel\u00a0; autrement, on ne peut pas le qualifier d&#039;ultrafin.<br>\u00c0 proprement parler, cela ne repr\u00e9sente que la moiti\u00e9 de la production. Un traitement de surface et une dispersion m\u00e9diocres entra\u00eenent l&#039;agglom\u00e9ration des particules primaires. Ces particules secondaires agglom\u00e9r\u00e9es peuvent former de grands amas, dont la taille peut atteindre plusieurs centaines de nanom\u00e8tres.<\/p>\n\n\n\n<p>Par cons\u00e9quent, les images de microscopie \u00e9lectronique \u00e0 transmission (MET) ne montrent que la taille des particules primaires. Elles ne refl\u00e8tent pas la taille r\u00e9elle des particules secondaires agglom\u00e9r\u00e9es. Cela est d\u00fb au fait que la pr\u00e9paration des \u00e9chantillons implique certains traitements techniques. Le carbonate de calcium ultrafin fortement agglom\u00e9r\u00e9 pr\u00e9sente une surface sp\u00e9cifique BET plus petite.<\/p>\n\n\n\n<p>Par cons\u00e9quent, l&#039;observation TEM et la mesure de la surface sp\u00e9cifique doivent \u00eatre combin\u00e9es. Cela garantit une \u00e9valuation scientifique et compl\u00e8te. Elles permettent d&#039;\u00e9valuer la finesse, la forme cristalline et l&#039;\u00e9tat de dispersion du carbonate de calcium ultrafin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Connexion intrins\u00e8que<\/h3>\n\n\n\n<p>La granulom\u00e9trie moyenne du carbonate de calcium ultrafin est \u00e9troitement li\u00e9e \u00e0 sa surface sp\u00e9cifique. Certains chercheurs utilisent le volume de s\u00e9dimentation pour d\u00e9terminer la granulom\u00e9trie. Outre la granulom\u00e9trie, de nombreux facteurs influencent le volume de s\u00e9dimentation du carbonate de calcium. La qualit\u00e9 du calcaire, la calcination de la chaux, la digestion et les conditions de carbonatation influencent toutes la granulom\u00e9trie. La forme cristalline du carbonate de calcium affecte \u00e9galement le volume de s\u00e9dimentation. Le carbonate de calcium pr\u00e9sente diverses formes cristallines aux formes g\u00e9om\u00e9triques irr\u00e9guli\u00e8res. M\u00eame une m\u00eame forme cristalline pr\u00e9sente une structure variable. Par cons\u00e9quent, la forme cristalline a un impact complexe sur le volume de s\u00e9dimentation. L&#039;utilisation du volume de s\u00e9dimentation pour d\u00e9terminer la granulom\u00e9trie est impr\u00e9cise et comporte des erreurs importantes.<\/p>\n\n\n\n<p>Afin d&#039;emp\u00eacher efficacement l&#039;agglom\u00e9ration de particules secondaires, le carbonate de calcium ultrafin n\u00e9cessite g\u00e9n\u00e9ralement <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/surface-modification\/\">modification de surface<\/a>Le processus de traitement de surface am\u00e9liore non seulement l\u2019activit\u00e9 mais emp\u00eache \u00e9galement l\u2019agglom\u00e9ration de particules secondaires.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"708\" height=\"369\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/03\/calcium-carbonate-before-and-after-modification.webp\" alt=\"carbonate de calcium avant et apr\u00e8s modification\" class=\"wp-image-3006\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/03\/calcium-carbonate-before-and-after-modification.webp 708w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/03\/calcium-carbonate-before-and-after-modification-300x156.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/03\/calcium-carbonate-before-and-after-modification-18x9.webp 18w\" sizes=\"(max-width: 708px) 100vw, 708px\" \/><\/figure>\n\n\n\n<p>Pour une cat\u00e9gorie de sp\u00e9cialit\u00e9 sp\u00e9cifique de carbonate de calcium ultrafin, afin de mieux r\u00e9pondre aux exigences des utilisateurs, il existe des diff\u00e9rences dans la forme cristalline et la taille des particules.<br>Il y a \u00e9galement la s\u00e9lection des agents de traitement de surface, ainsi que l&#039;exp\u00e9rience et les techniques pendant le processus de traitement.<\/p>\n\n\n\n<p>Il est donc difficile d\u2019utiliser une norme unifi\u00e9e pour mesurer des vari\u00e9t\u00e9s sp\u00e9ciales de carbonate de calcium ultrafin \u00e0 des fins diff\u00e9rentes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Forme cristalline<\/h2>\n\n\n\n<p>Pour le carbonate de calcium ultrafin, la forme cristalline est \u00e9galement un indicateur technique tr\u00e8s important.<\/p>\n\n\n\n<p>Il est bien connu que le carbonate de calcium l\u00e9ger ordinaire a une forme fusiforme. Utilis\u00e9 dans les plastiques PVC, il cr\u00e9e de fortes contraintes, provoquant le blanchiment des films plastiques. Le carbonate de calcium ultrafin pr\u00e9sente diff\u00e9rentes formes cristallines selon son application. Par exemple\u00a0:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Carbonate de calcium ultrafin pour plastiques<\/h3>\n\n\n\n<p>Le carbonate de calcium ultrafin pour plastiques requiert une structure cristalline simple, un volume apparent plus faible et une absorption d&#039;huile plus faible. Les formes cubiques ou sph\u00e9riques sont pr\u00e9f\u00e9rables. Le carbonate de calcium ultrafin, dont la granulom\u00e9trie est de 0,072 \u03bcm, am\u00e9liore les plastiques PVC. Il am\u00e9liore le liss\u00e9, la brillance et l&#039;isolation \u00e9lectrique de la surface. Dans les c\u00e2bles souples, il permet de doubler la quantit\u00e9 de charge tout en respectant les normes nationales. Dans les films plastiques, il r\u00e9duit le blanchiment et augmente l&#039;allongement \u00e0 basse temp\u00e9rature. Dans les plastiques rigides comme les portes, les fen\u00eatres et les profil\u00e9s, il am\u00e9liore la r\u00e9sistance aux chocs. La r\u00e9sistance aux chocs entaill\u00e9s peut atteindre 49,1 kJ\/m\u00b2.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Carbonate de calcium ultrafin pour caoutchouc<\/h3>\n\n\n\n<p>Les structures en cha\u00eene offrent le meilleur renforcement. Le carbonate de calcium ultrafin en cha\u00eene se forme par l&#039;alignement de plusieurs \u00e0 plusieurs dizaines de cristaux. Dans le caoutchouc, il cr\u00e9e un r\u00e9seau tridimensionnel offrant une excellente dispersion. Lors du m\u00e9lange, les cha\u00eenes de carbonate de calcium se rompent, formant des surfaces actives. Ces surfaces actives se lient \u00e9troitement aux cha\u00eenes de caoutchouc, ce qui renforce consid\u00e9rablement son effet de renforcement dans le caoutchouc. La r\u00e9sistance du renforcement du caoutchouc diminue dans l&#039;ordre suivant\u00a0: en cha\u00eene, en aiguilles, sph\u00e9rique et cubique.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Carbonate de calcium ultrafin pour encre<\/h3>\n\n\n\n<p>La forme cubique est la meilleure, d\u00e9termin\u00e9e par les propri\u00e9t\u00e9s de l&#039;encre. Dans les encres \u00e0 base de r\u00e9sine, le carbonate de calcium ultrafin am\u00e9liore la brillance, la transparence et la fluidit\u00e9. La forme cubique offre la brillance optimale de l&#039;encre.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Carbonate de calcium pr\u00e9cipit\u00e9 pour le couchage du papier<\/h3>\n\n\n\n<p>En g\u00e9n\u00e9ral, il n&#039;appartient pas \u00e0 la cat\u00e9gorie des carbonates de calcium ultrafins. Sa granulom\u00e9trie est proche de celle du carbonate de calcium fin (0,1 \u00e0 1 \u03bcm). Cependant, la forme cristalline reste importante. L&#039;opacit\u00e9, la viscosit\u00e9 \u00e9lev\u00e9e, la blancheur et l&#039;absorption d&#039;encre sont des facteurs cl\u00e9s. Les cristaux en paillettes et cubiques sont id\u00e9aux.<\/p>\n\n\n\n<p>En r\u00e9sum\u00e9, le carbonate de calcium ultrafin doit avoir une granulom\u00e9trie comprise entre 0,02 et 0,1 \u00b5m. De plus, sa forme cristalline doit \u00eatre choisie en fonction de l&#039;application. Cela garantit la production de produits commercialisables.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"757\" height=\"723\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Ultrafine-Calcium-Carbonate-Crystalline.webp\" alt=\"Carbonate de calcium cristallin ultrafin\" class=\"wp-image-3025\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Ultrafine-Calcium-Carbonate-Crystalline.webp 757w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Ultrafine-Calcium-Carbonate-Crystalline-300x287.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/Ultrafine-Calcium-Carbonate-Crystalline-13x12.webp 13w\" sizes=\"(max-width: 757px) 100vw, 757px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Valeur d&#039;absorption d&#039;huile<\/h2>\n\n\n\n<p>La capacit\u00e9 d&#039;absorption d&#039;huile du carbonate de calcium ultrafin est cruciale pour ses performances. Elle est particuli\u00e8rement importante dans les plastiques, les rev\u00eatements et les encres. Une capacit\u00e9 d&#039;absorption d&#039;huile \u00e9lev\u00e9e augmente la consommation de plastifiants dans les plastiques. Dans les rev\u00eatements et les encres, elle augmente la viscosit\u00e9. Par cons\u00e9quent, la capacit\u00e9 d&#039;absorption d&#039;huile ne doit pas \u00eatre trop \u00e9lev\u00e9e.<\/p>\n\n\n\n<p>Outre ses propri\u00e9t\u00e9s physiques, de nombreux facteurs influencent la capacit\u00e9 d&#039;absorption d&#039;huile d&#039;une poudre. Parmi eux, la taille des particules est un facteur important. <\/p>\n\n\n\n<p>Par cons\u00e9quent, pour le carbonate de calcium ultrafin, la premi\u00e8re consid\u00e9ration est la granulom\u00e9trie et la dispersion. Il est important d&#039;obtenir une surface sp\u00e9cifique correspondant \u00e0 la granulom\u00e9trie. Ensuite, il faut s&#039;attacher \u00e0 r\u00e9duire la valeur d&#039;absorption d&#039;huile. Ce n&#039;est qu&#039;\u00e0 ce moment-l\u00e0 que cela devient pertinent. Si la dispersion est mauvaise et que les particules secondaires s&#039;agglom\u00e8rent, la surface sp\u00e9cifique est faible. Dans ce cas, m\u00eame avec une faible valeur d&#039;absorption d&#039;huile, elle n&#039;a aucune application pratique.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Contenu principal<\/h2>\n\n\n\n<p>La teneur en carbonate de calcium ultrafin (oxyde de calcium) ne doit pas \u00eatre excessivement limit\u00e9e. Dans la plupart des cas, le carbonate de calcium ultrafin sert de charge fonctionnelle. Il affecte principalement les propri\u00e9t\u00e9s physiques du mat\u00e9riau de charge, et non ses propri\u00e9t\u00e9s chimiques. Une teneur limit\u00e9e permet de satisfaire aux exigences de performance physique.<\/p>\n\n\n\n<p>Lors de la pr\u00e9paration du carbonate de calcium ultrafin, divers additifs sont utilis\u00e9s pour obtenir les propri\u00e9t\u00e9s souhait\u00e9es. Parmi ceux-ci figurent des agents de contr\u00f4le de la forme cristalline, des dispersants et des agents de traitement de surface. Ils contribuent \u00e0 r\u00e9pondre aux exigences des plastiques, du caoutchouc et des encres. Ces \u00ab\u00a0impuret\u00e9s\u00a0\u00bb ajout\u00e9es intentionnellement n&#039;affectent g\u00e9n\u00e9ralement pas les performances. Dans certains cas, elles am\u00e9liorent m\u00eame les propri\u00e9t\u00e9s d&#039;application. Cependant, ces additifs ont in\u00e9vitablement un impact sur le composant principal (oxyde de calcium).<\/p>\n\n\n\n<p>Les \u00e9l\u00e9ments nocifs comme le fer et le mangan\u00e8se doivent \u00eatre strictement contr\u00f4l\u00e9s. Ils peuvent provenir des mati\u00e8res premi\u00e8res ou du processus de pr\u00e9paration. Ces impuret\u00e9s alt\u00e8rent la couleur du produit et acc\u00e9l\u00e8rent la d\u00e9gradation de la r\u00e9sine. Elles acc\u00e9l\u00e8rent \u00e9galement le vieillissement de la r\u00e9sine et doivent \u00eatre \u00e9vit\u00e9es. Les impuret\u00e9s comme le silicium, l&#039;aluminium et le magn\u00e9sium r\u00e9duisent la blancheur et ont \u00e9galement un impact n\u00e9gatif sur les op\u00e9rations de transformation. Les mati\u00e8res premi\u00e8res calcaires doivent \u00eatre soigneusement s\u00e9lectionn\u00e9es et contr\u00f4l\u00e9es.<\/p>\n\n\n\n<p>Par cons\u00e9quent, la teneur en carbonate de calcium ultrafin (oxyde de calcium) ne doit pas \u00eatre excessivement limit\u00e9e, dans des limites raisonnables. Des limitations excessives pourraient entraver le d\u00e9veloppement de produits sp\u00e9cialis\u00e9s.<\/p>\n\n\n\n<p>En r\u00e9sum\u00e9, les principaux axes de d\u00e9veloppement du carbonate de calcium ultrafin sont la sp\u00e9cialisation, la diversification et la fonctionnalit\u00e9. La simple production de carbonate de calcium ultrafin avec une granulom\u00e9trie de 0,02 \u00e0 0,1 \u03bcm ne suffit pas. Ignorer la forme cristalline, la dispersion et l&#039;activation le rend inadapt\u00e9 \u00e0 toutes les applications. Chaque industrie exige des propri\u00e9t\u00e9s sp\u00e9cifiques telles que la granulom\u00e9trie, la forme cristalline, la surface sp\u00e9cifique et l&#039;absorption d&#039;huile. L&#039;adaptation de ces facteurs assure une meilleure compatibilit\u00e9 avec les diff\u00e9rents secteurs et utilisateurs. Par cons\u00e9quent, l&#039;application d&#039;une norme unique \u00e0 tous les produits de carbonate de calcium ultrafin est irr\u00e9aliste.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">POUDRE \u00c9PIQUE<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/machines\/ball-mill\/\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"525\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/ball-milling-classifier-product-line.webp\" alt=\"gamme de produits de classificateurs de broyeurs \u00e0 boulets\" class=\"wp-image-3026\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/ball-milling-classifier-product-line.webp 700w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/ball-milling-classifier-product-line-300x225.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/04\/ball-milling-classifier-product-line-16x12.webp 16w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure>\n\n\n\n<p>Epic Powder, plus de 20 ans d&#039;exp\u00e9rience dans l&#039;industrie des poudres ultrafines. Nous promouvons activement le d\u00e9veloppement futur des poudres ultrafines, en nous concentrant sur les proc\u00e9d\u00e9s de concassage, de broyage, de classification et de modification. Contactez-nous pour une consultation gratuite et des solutions personnalis\u00e9es\u00a0! Notre \u00e9quipe d&#039;experts s&#039;engage \u00e0 vous fournir des produits et services de haute qualit\u00e9 pour optimiser la valeur de vos proc\u00e9d\u00e9s de traitement des poudres. Epic Powder\u00a0: votre expert de confiance en traitement des poudres\u00a0!<\/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=\"\/fr\/wp-json\/wp\/v2\/posts\/3024#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\/3024#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=\"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: 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=\"fr\"\/><\/form>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Pour le carbonate de calcium ultrafin, la granulom\u00e9trie, la surface sp\u00e9cifique, la forme cristalline et la valeur d&#039;absorption d&#039;huile sont les indicateurs techniques les plus importants, affectant directement les performances de son application. Bien entendu, cela ne nie pas l&#039;importance des autres indicateurs\u00a0; ils sont simplement relativement plus faciles \u00e0 obtenir dans les applications industrielles. Cependant, pour les applications sp\u00e9cialis\u00e9es, diff\u00e9rents [\u2026]<\/p>","protected":false},"author":1,"featured_media":3027,"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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