{"id":3411,"date":"2025-07-28T13:15:54","date_gmt":"2025-07-28T05:15:54","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?p=3411"},"modified":"2025-07-28T13:15:58","modified_gmt":"2025-07-28T05:15:58","slug":"science-popularization-classroom-application-and-production-process-of-calcium-carbonate-powders","status":"publish","type":"post","link":"https:\/\/calcium-carbonate.epic-powder.com\/fr\/science-popularization-classroom-application-and-production-process-of-calcium-carbonate-powders\/","title":{"rendered":"\u00ab\u00a0Classe de vulgarisation scientifique\u00a0\u00bb \u2013 Application et proc\u00e9d\u00e9 de production de poudres de carbonate de calcium"},"content":{"rendered":"<p><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/machines\/\">Poudres de carbonate de calcium<\/a>, commun\u00e9ment appel\u00e9 calcaire ou poudre de pierre, est principalement compos\u00e9 de carbonate de calcium. Il est l\u00e9g\u00e8rement alcalin, insoluble dans l&#039;eau et soluble dans les acides.<\/p>\n\n\n\n<p>C&#039;est l&#039;une des substances les plus courantes sur Terre, pr\u00e9sente dans des roches telles que l&#039;aragonite, la calcite, la craie, le calcaire, le marbre et le travertin. C&#039;est \u00e9galement un composant majeur des os et des coquillages d&#039;animaux.<\/p>\n\n\n\n<p>Les poudres de carbonate de calcium peuvent \u00eatre class\u00e9es en : poudre de calcium lourde, poudre de calcium l\u00e9g\u00e8re, poudre de calcium activ\u00e9e, poudre de calcium de d\u00e9sulfuration des gaz de combustion et <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/machines\/ball-mill\/\">carbonate de calcium ultrafin<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"420\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/06\/Ground-calcium-carbonate.webp\" alt=\"carbonate de calcium moulu\" class=\"wp-image-3270\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/06\/Ground-calcium-carbonate.webp 750w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/06\/Ground-calcium-carbonate-300x168.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/06\/Ground-calcium-carbonate-18x10.webp 18w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Principales utilisations de la poudre de carbonate de calcium<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie du caoutchouc<\/h3>\n\n\n\n<p>La poudre de carbonate de calcium (400 mesh, blancheur\u00a0: 93%, teneur en calcium\u00a0: 96%) est l&#039;une des charges les plus utilis\u00e9es dans l&#039;industrie du caoutchouc. Elle permet d&#039;augmenter le volume des produits en caoutchouc et de r\u00e9duire la quantit\u00e9 de caoutchouc naturel co\u00fbteux, diminuant ainsi les co\u00fbts. L&#039;ajout de poudre de carbonate de calcium au caoutchouc am\u00e9liore la r\u00e9sistance \u00e0 la traction, \u00e0 la d\u00e9chirure et \u00e0 l&#039;usure par rapport aux vulcanisats de caoutchouc pur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie du plastique<\/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\/07\/PP-PE-filling-masterbatch.webp\" alt=\"M\u00e9lange ma\u00eetre de remplissage PP, PE\" class=\"wp-image-3412\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/PP-PE-filling-masterbatch.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/PP-PE-filling-masterbatch-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/PP-PE-filling-masterbatch-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/PP-PE-filling-masterbatch-768x768.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/PP-PE-filling-masterbatch-12x12.webp 12w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Dans les m\u00e9langes-ma\u00eetres et les concentr\u00e9s colorants plastiques (400 mesh, blancheur\u00a0: 95%, teneur en calcium\u00a0: 99%), le carbonate de calcium sert de mat\u00e9riau de base. Il stabilise les dimensions des produits plastiques, augmente leur duret\u00e9 et am\u00e9liore la brillance et le liss\u00e9 de leur surface. Sa blancheur (sup\u00e9rieure \u00e0 90) lui permet \u00e9galement de remplacer les pigments blancs co\u00fbteux.<br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie de la peinture<\/h3>\n\n\n\n<p>La poudre de carbonate de calcium pour peintures et peintures au latex (800\u20131000 mesh, blancheur : 95%, teneur en calcium : 96%) est largement utilis\u00e9e, avec une utilisation typique de 30% ou plus dans les peintures \u00e9paisses.                                              <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Rev\u00eatements \u00e0 base d&#039;eau<\/h3>\n\n\n\n<p>La poudre de carbonate de calcium (800\u20131000 mesh, blancheur\u00a0: 95%, teneur en calcium\u00a0: 96%) est couramment utilis\u00e9e dans les rev\u00eatements \u00e0 base d&#039;eau, am\u00e9liorant leurs propri\u00e9t\u00e9s telles que la non-s\u00e9dimentation, la facilit\u00e9 de dispersion et la brillance. Elle est g\u00e9n\u00e9ralement utilis\u00e9e \u00e0 des concentrations de 20 \u00e0 60%.<br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie du papier<\/h3>\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\/07\/papermaking-industry.webp\" alt=\"industrie papeti\u00e8re\" class=\"wp-image-3413\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/papermaking-industry.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/papermaking-industry-300x207.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/papermaking-industry-768x530.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/papermaking-industry-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>La poudre de calcium lourde (325 mesh, blancheur : 95%, teneur en calcium : 98%) joue un r\u00f4le important dans l&#039;industrie du papier, garantissant la r\u00e9sistance et la blancheur du papier \u00e0 moindre co\u00fbt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie de la construction<\/h3>\n\n\n\n<p>La poudre de calcium pour mortier sec (325 mesh, blancheur : 95%, teneur en calcium : 98%) est importante dans la production de b\u00e9ton, r\u00e9duisant les co\u00fbts de production tout en augmentant la t\u00e9nacit\u00e9 et la r\u00e9sistance du produit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie des plafonds ignifuges<\/h3>\n\n\n\n<p>La poudre de calcium pour plafonds ignifuges (600 mesh, blancheur : 95%, teneur en calcium : 98,5%) am\u00e9liore la blancheur, la luminosit\u00e9 et les performances ignifuges.<br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie du marbre artificiel<\/h3>\n\n\n\n<p>La poudre de calcium pour marbre artificiel (325 mesh, blancheur : 95%, teneur en calcium : 98,5%) est largement utilis\u00e9e dans la production de marbre artificiel pour sa puret\u00e9 et son absence d&#039;impuret\u00e9s.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Industrie du carrelage<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"685\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Floor-Tile.webp\" alt=\"Carrelage de sol\" class=\"wp-image-3414\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Floor-Tile.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Floor-Tile-300x257.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Floor-Tile-768x658.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Floor-Tile-14x12.webp 14w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>La poudre de calcium pour carreaux de sol (400 mesh, blancheur : 95%, teneur en calcium : 98,5%) est utilis\u00e9e pour am\u00e9liorer la blancheur, la r\u00e9sistance et la t\u00e9nacit\u00e9 des carreaux de sol tout en r\u00e9duisant les co\u00fbts de production.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/astra-portfolio\/grinding-and-classifying-system-for-the-production-of-calcium-carbonate\/\">Poudre de calcium lourde <\/a>Processus de production<\/h2>\n\n\n\n<p>La production de poudre de calcium lourde peut \u00eatre r\u00e9alis\u00e9e par des proc\u00e9d\u00e9s secs et humides.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Proc\u00e9d\u00e9 \u00e0 sec<\/h3>\n\n\n\n<p>Le proc\u00e9d\u00e9 \u00e0 sec est g\u00e9n\u00e9ralement utilis\u00e9 lorsque les mati\u00e8res premi\u00e8res sont simples, le calcaire est abondant et l\u2019investissement en \u00e9quipement est relativement \u00e9lev\u00e9.<\/p>\n\n\n\n<p><strong>Traitement des mati\u00e8res premi\u00e8res :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Concassage : Les minerais de calcium (tels que le calcaire et la calcite) sont concass\u00e9s jusqu&#039;\u00e0 obtenir des particules de taille appropri\u00e9e.<\/li>\n\n\n\n<li>Calcination : Le calcaire est calcin\u00e9 \u00e0 haute temp\u00e9rature (g\u00e9n\u00e9ralement 900\u00b0C \u00e0 1000\u00b0C), le transformant en chaux vive (oxyde de calcium).<\/li>\n<\/ul>\n\n\n\n<p><strong>Processus de r\u00e9action :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hydratation\u00a0: La chaux vive r\u00e9agit avec l\u2019eau pour produire de l\u2019hydroxyde de calcium. Il s\u2019agit d\u2019une r\u00e9action exothermique, et l\u2019hydroxyde de calcium obtenu est ensuite trait\u00e9 et finement broy\u00e9.<\/li>\n<\/ul>\n\n\n\n<p><strong>Broyage fin et conditionnement :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"419\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1.webp\" alt=\"Syst\u00e8me de classification \u00e0 broyeur \u00e0 boulets 1\" class=\"wp-image-3360\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1-300x157.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1-768x402.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/Ball-mill-classifer-system-1-18x9.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Syst\u00e8me de classification \u00e0 broyeur \u00e0 boulets 1<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Broyage fin : Le produit hydrat\u00e9 est finement broy\u00e9 et class\u00e9 pour obtenir la granulom\u00e9trie et la qualit\u00e9 de produit souhait\u00e9es.<\/li>\n\n\n\n<li>Conditionnement : La poudre de calcium lourd transform\u00e9e est conditionn\u00e9e dans le respect des normes d&#039;hygi\u00e8ne et des exigences de s\u00e9curit\u00e9 avant stockage et vente.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Proc\u00e9d\u00e9 humide :<\/strong><\/h3>\n\n\n\n<p>Le proc\u00e9d\u00e9 humide convient aux mati\u00e8res premi\u00e8res \u00e0 forte teneur en silicate ou \u00e0 d&#039;autres \u00e9l\u00e9ments difficiles \u00e0 traiter et lorsqu&#039;un produit plus fin et de plus grande puret\u00e9 est requis.<\/p>\n\n\n\n<p>Emballage : Le produit final est emball\u00e9, en respectant les normes d&#039;hygi\u00e8ne et de s\u00e9curit\u00e9, avant stockage et vente.<\/p>\n\n\n\n<p><strong>Traitement des mati\u00e8res premi\u00e8res :<\/strong><\/p>\n\n\n\n<p>Lixiviation : Les minerais de calcium sont lixivi\u00e9s pour obtenir une solution, g\u00e9n\u00e9ralement \u00e0 l\u2019aide d\u2019acides ou d\u2019autres solvants.<\/p>\n\n\n\n<p>Pr\u00e9cipitation : En ajoutant des r\u00e9actifs appropri\u00e9s (tels que l&#039;hydroxyde de sodium), les composants calciques de la solution pr\u00e9cipitent sous forme de mati\u00e8re solide.<\/p>\n\n\n\n<p><strong>Processus de r\u00e9action :<\/strong><\/p>\n\n\n\n<p>Calcium pr\u00e9cipit\u00e9 : les compos\u00e9s de calcium pr\u00e9cipit\u00e9s (par exemple, le carbonate de calcium) sont filtr\u00e9s, lav\u00e9s et s\u00e9ch\u00e9s pour produire une poudre de calcium lourde.<\/p>\n\n\n\n<p><strong>Broyage fin et conditionnement :<\/strong><\/p>\n\n\n\n<p>Broyage fin : La poudre de calcium lourde pr\u00e9cipit\u00e9e par voie humide est finement broy\u00e9e pour obtenir la taille de particule et la qualit\u00e9 requises.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/ultrafine-air-classifier\/\">Classification des poudres de carbonate de calcium<\/a><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/air-classifer1.webp\" alt=\"classificateur d&#039;air1\" class=\"wp-image-3358\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/air-classifer1.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/air-classifer1-300x300.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/air-classifer1-150x150.webp 150w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/air-classifer1-768x768.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/07\/air-classifer1-12x12.webp 12w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>Le criblage de la poudre de calcium consiste \u00e0 la classer selon la granulom\u00e9trie afin d&#039;obtenir des produits de la gamme granulom\u00e9trique souhait\u00e9e. Le criblage est une \u00e9tape cruciale de la production de poudre de calcium, car la granulom\u00e9trie influence directement ses performances dans diff\u00e9rentes applications. Voici les \u00e9tapes de base et les m\u00e9thodes courantes de criblage de la poudre de calcium\u00a0:<\/p>\n\n\n\n<p><strong>Pr\u00e9traitement :<\/strong><br>Avant le criblage, la poudre de calcium brute subit g\u00e9n\u00e9ralement un pr\u00e9traitement pour \u00e9liminer les impuret\u00e9s et traiter les poussi\u00e8res ou les agglom\u00e9rats. Ce pr\u00e9traitement peut \u00eatre r\u00e9alis\u00e9 par des m\u00e9thodes physiques (par exemple, s\u00e9paration par air ou par magn\u00e9tisme) ou chimiques (par exemple, lavage acide ou alcalin).<\/p>\n\n\n\n<p><strong>Op\u00e9ration de d\u00e9pistage :<\/strong><br>La poudre de calcium pr\u00e9trait\u00e9e est introduite dans des \u00e9quipements de criblage (tels que des tamis vibrants ou des classificateurs \u00e0 air). La poudre est class\u00e9e par vibration m\u00e9canique ou par flux d&#039;air.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cribles vibrants :<\/strong> Une m\u00e9thode courante o\u00f9 la poudre est tri\u00e9e par couches sur un tamis.<\/li>\n\n\n\n<li><strong>Classificateurs d&#039;air :<\/strong> Particuli\u00e8rement utile pour les poudres fines ou les applications n\u00e9cessitant une s\u00e9paration de haute pr\u00e9cision.<\/li>\n<\/ul>\n\n\n\n<p><strong>Collecte et traitement :<\/strong><br>Apr\u00e8s le criblage, la poudre de calcium est collect\u00e9e en diff\u00e9rentes granulom\u00e9tries (grossi\u00e8re, moyenne, fine) pour r\u00e9pondre aux besoins sp\u00e9cifiques de l&#039;application. Les produits fins ou de haute pr\u00e9cision peuvent n\u00e9cessiter un broyage ou un criblage plus fin pour atteindre des normes de qualit\u00e9 plus \u00e9lev\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Importance de la classification des poudres d&#039;arbonate de calcium<\/h3>\n\n\n\n<p><strong>Contr\u00f4le de la qualit\u00e9 des produits :<\/strong> Le tamisage permet de contr\u00f4ler la distribution granulom\u00e9trique, garantissant ainsi que le produit r\u00e9pond aux sp\u00e9cifications techniques requises.<\/p>\n\n\n\n<p><strong>Performances des applications :<\/strong> Diff\u00e9rentes applications n\u00e9cessitent des granulom\u00e9tries sp\u00e9cifiques. Une classification correcte am\u00e9liore les performances de la poudre de calcium dans divers domaines.<\/p>\n\n\n\n<p><strong>Efficacit\u00e9 de la production :<\/strong> Des \u00e9quipements et des m\u00e9thodes de criblage appropri\u00e9s am\u00e9liorent l\u2019efficacit\u00e9 de la production, r\u00e9duisent les co\u00fbts et minimisent les d\u00e9chets.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/contact\/\">Poudre \u00e9pique<\/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=\"Syst\u00e8me de broyeur \u00e0 boulets et de classificateur pour carbonate de calcium-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>La production et la classification des poudres de carbonate de calcium n\u00e9cessitent des proc\u00e9d\u00e9s pr\u00e9cis pour r\u00e9pondre aux besoins sp\u00e9cifiques de chaque secteur. Gr\u00e2ce aux \u00e9quipements de broyage et de classification pneumatique de pointe d&#039;Epic Powder, il est possible de produire des poudres de carbonate de calcium finement broy\u00e9es de haute qualit\u00e9, garantissant des performances optimales dans diverses applications. Que ce soit pour le caoutchouc, le plastique, la peinture ou la construction, les solutions d&#039;Epic Powder offrent des m\u00e9thodes fiables et \u00e9conomiques pour am\u00e9liorer la fonctionnalit\u00e9 et l&#039;efficacit\u00e9 du carbonate de calcium dans divers secteurs.<\/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\/3411#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\/3411#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>Les poudres de carbonate de calcium, commun\u00e9ment appel\u00e9es poudres de calcaire ou de pierre, sont principalement compos\u00e9es de carbonate de calcium. L\u00e9g\u00e8rement alcalin, insoluble dans l&#039;eau et soluble dans les acides, c&#039;est l&#039;une des substances les plus courantes sur Terre, pr\u00e9sente dans des roches telles que l&#039;aragonite, la calcite, la craie, le calcaire, le marbre et le travertin. C&#039;est \u00e9galement un composant majeur [\u2026]<\/p>","protected":false},"author":1,"featured_media":3415,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3411","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ultrafine-air-classifier"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>&quot;Science Popularization Classroom&quot; 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