{"id":14751,"date":"2024-08-08T03:21:12","date_gmt":"2024-08-08T03:21:12","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=14751"},"modified":"2024-11-07T02:00:09","modified_gmt":"2024-11-07T02:00:09","slug":"what-high-end-applications-does-limestone-have-besides-producing-cement","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/fr\/what-high-end-applications-does-limestone-have-besides-producing-cement\/","title":{"rendered":"Quelles sont les applications haut de gamme du calcaire en dehors de la production de ciment ?"},"content":{"rendered":"<p>Le calcaire est la principale mati\u00e8re premi\u00e8re pour <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cement\">ciment<\/a> Production. Il faut environ 1,4 \u00e0 1,5 tonne de calcaire pour produire 1 tonne de clinker de ciment. Selon les donn\u00e9es du Bureau national des statistiques, la production de ciment en Chine a d\u00e9pass\u00e9 2,3 milliards de tonnes en 2019 et la consommation annuelle de calcaire a d\u00e9pass\u00e9 2,8 milliards de tonnes.<\/p>\n\n\n\n<p>De plus, les entreprises centrales, les entreprises publiques et les grandes entreprises priv\u00e9es dominent plus de 80% de l&#039;industrie du ciment. Ces entit\u00e9s contr\u00f4lent plus de 90% des droits d&#039;exploitation des ressources en calcaire. En cons\u00e9quence, plus de 90% de ressources en calcaire sont utilis\u00e9es pour la production de ciment \u00e0 faible valeur ajout\u00e9e, ce qui entra\u00eene un gaspillage important.<\/p>\n\n\n\n<p>Alors, outre la production de ciment, quelles sont les autres applications haut de gamme du calcaire ?<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"700\" height=\"525\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/limestone.webp\" alt=\"\" class=\"wp-image-14752\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/limestone.webp 700w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/limestone-300x225.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/limestone-16x12.webp 16w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/limestone-600x450.webp 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Production d&#039;oxyde de calcium<\/strong><\/h2>\n\n\n\n<p>L&#039;oxyde de calcium, commun\u00e9ment appel\u00e9 chaux vive, est obtenu par calcination \u00e0 haute temp\u00e9rature du calcaire. Il se pr\u00e9sente sous deux formes : en bloc et en poudre. En fonction de sa teneur en calcium et en magn\u00e9sium, il est class\u00e9 en qualit\u00e9 industrielle et qualit\u00e9 alimentaire. L&#039;oxyde de calcium de qualit\u00e9 industrielle se d\u00e9cline en quatre classes. <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La classe I est destin\u00e9e \u00e0 la synth\u00e8se chimique. <\/li>\n\n\n\n<li>La classe II est destin\u00e9e au carbure de calcium. <\/li>\n\n\n\n<li>La classe III concerne les plastiques et le caoutchouc. <\/li>\n\n\n\n<li>La classe IV est destin\u00e9e \u00e0 la d\u00e9sulfuration des gaz de combustion.<\/li>\n<\/ul>\n\n\n\n<p>L&#039;oxyde de calcium est un mat\u00e9riau auxiliaire important et une mati\u00e8re premi\u00e8re de base pour l&#039;acier et les plastiques. Il a d&#039;\u00e9normes perspectives de march\u00e9 dans les domaines de la protection de l&#039;environnement. Tels que le traitement des eaux us\u00e9es industrielles, l&#039;incin\u00e9ration des ordures et la d\u00e9sulfuration des gaz de combustion. En tant qu&#039;oxyde alcalin rentable, l&#039;oxyde de calcium est \u00e9galement largement utilis\u00e9 dans les autoroutes, les chemins de fer \u00e0 grande vitesse et la construction. \u00c9galement dans l&#039;industrie (m\u00e9taux non ferreux, fabrication de papier, fabrication de sucre, carbonate de sodium, alimentation, m\u00e9decine, mat\u00e9riaux de construction), l&#039;agriculture et d&#039;autres domaines, ce qui en fait une mati\u00e8re premi\u00e8re de base importante.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Production d&#039;hydroxyde de calcium<\/strong><\/h2>\n\n\n\n<p>L&#039;hydroxyde de calcium est form\u00e9 par la digestion de l&#039;oxyde de calcium avec de l&#039;eau. La formule chimique est Ca(OH)2, commun\u00e9ment appel\u00e9e chaux \u00e9teinte. La solution aqueuse est appel\u00e9e eau de chaux clarifi\u00e9e.<\/p>\n\n\n\n<p>L&#039;hydroxyde de calcium a les propri\u00e9t\u00e9s g\u00e9n\u00e9rales d&#039;un alcali et est un alcali fort. La solubilit\u00e9 de l&#039;hydroxyde de calcium \u00e9tant bien inf\u00e9rieure \u00e0 celle de l&#039;hydroxyde de sodium et de l&#039;hydroxyde de potassium, sa solution pr\u00e9sente une corrosivit\u00e9 et une alcalinit\u00e9 relativement faibles.<\/p>\n\n\n\n<p>Par cons\u00e9quent, il peut \u00eatre utilis\u00e9 comme r\u00e9gulateur d&#039;acidit\u00e9 dans les aliments, remplissant des fonctions telles que la mise en tampon, la neutralisation et la solidification. L&#039;hydroxyde de calcium de qualit\u00e9 alimentaire a une activit\u00e9 relativement \u00e9lev\u00e9e, une structure l\u00e2che, une grande puret\u00e9, une bonne blancheur, une faible teneur en impuret\u00e9s et ne contient pas d&#039;\u00e9l\u00e9ments nocifs tels que le Pb et l&#039;As.<\/p>\n\n\n\n<p>L&#039;hydroxyde de calcium est largement utilis\u00e9 comme mati\u00e8re premi\u00e8re dans l&#039;industrie de production de pr\u00e9parations de calcium, le gluconate de calcium \u00e9tant le produit le plus courant.<\/p>\n\n\n\n<p>L&#039;hydroxyde de calcium peut r\u00e9guler l&#039;acidit\u00e9 des laits en poudre et des pr\u00e9parations pour nourrissons. Il peut \u00e9galement servir de tampon, de neutralisant et d&#039;agent de durcissement dans la bi\u00e8re, le fromage et les produits \u00e0 base de cacao. L&#039;hydroxyde de calcium est utilis\u00e9 dans la fabrication de m\u00e9dicaments et d&#039;additifs alimentaires. Il ajuste le pH et provoque la coagulation. Par exemple, la synth\u00e8se de : biomat\u00e9riaux de haute technologie comme l&#039;HA, les phosphates VC pour les additifs alimentaires, le cyclohexane de calcium, le lactate de calcium et le citrate de calcium.<\/p>\n\n\n\n<p>De plus, il est utilis\u00e9 comme additif dans l&#039;industrie sucri\u00e8re, le traitement de l&#039;eau et d&#039;autres produits chimiques organiques haut de gamme. Il est \u00e9galement utile pour pr\u00e9parer des r\u00e9gulateurs d&#039;acidit\u00e9 et des sources de calcium dans les produits semi-finis \u00e0 base de viande comestible, les produits \u00e0 base de konjac, les boissons et les lavements m\u00e9dicaux.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">D\u00e9veloppement de l&#039;hydroxyde de calcium<\/h3>\n\n\n\n<p>Dans certains pays, l&#039;industrie de l&#039;hydroxyde de calcium s&#039;est d\u00e9velopp\u00e9e plus t\u00f4t. Le Royaume-Uni, les \u00c9tats-Unis, l&#039;Allemagne, le Japon et la Cor\u00e9e du Sud ont tous une production annuelle sup\u00e9rieure \u00e0 10 millions de tonnes. Ces pays produisent principalement des produits de haute puret\u00e9 et de haute blancheur. Par rapport \u00e0 eux, la capacit\u00e9 de production des entreprises chinoises d&#039;hydroxyde de calcium de qualit\u00e9 alimentaire est moins suffisante. Les produits de haute qualit\u00e9 ne peuvent pas r\u00e9pondre aux demandes du march\u00e9 international en raison de limitations techniques. La quantit\u00e9 et la qualit\u00e9 des produits sont inf\u00e9rieures \u00e0 celles des entreprises \u00e9trang\u00e8res. <\/p>\n\n\n\n<p>Il est donc essentiel de d\u00e9velopper les entreprises nationales d&#039;hydroxyde de calcium \u00e0 un rythme soutenu. Avec les avanc\u00e9es technologiques actuelles dans le domaine biologique en Chine, le domaine d&#039;application de l&#039;hydroxyde de calcium devient de plus en plus vaste, en particulier avec l&#039;\u00e9norme demande d&#039;hydroxyde de calcium de qualit\u00e9 alimentaire.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Production de carbonate de calcium nano<\/strong><\/h2>\n\n\n\n<p>Le carbonate de calcium nano fait r\u00e9f\u00e9rence \u00e0 des charges inorganiques fonctionnelles avec une taille de particule de 1 \u00e0 100 nm, largement utilis\u00e9es dans le caoutchouc, les plastiques, la fabrication du papier, l&#039;encre, les rev\u00eatements, les produits d&#039;\u00e9tanch\u00e9it\u00e9 et les adh\u00e9sifs, la m\u00e9decine, le dentifrice, l&#039;alimentation et d&#039;autres domaines.<\/p>\n\n\n\n<p>La production industrielle de carbonate de calcium nano repose principalement sur la carbonisation. La mati\u00e8re premi\u00e8re est principalement du calcaire \u00e0 haute teneur en carbonate de calcium. Le processus de production comprend la calcination, la digestion, la carbonisation, la modification, la dispersion et le s\u00e9chage pour obtenir le produit final en poudre.<\/p>\n\n\n\n<p>Par exemple, Shandong Donghua Technology Co., Ltd. transforme le calcaire en nouveaux mat\u00e9riaux haut de gamme \u00e0 base de calcium, tels que le carbonate de calcium nano. Le prix du minerai de chaux, qui est d&#039;environ 100 yuans\/tonne, peut atteindre 3 000 yuans\/tonne, et le prix du carbonate de calcium nano de qualit\u00e9 alimentaire peut atteindre 10 000 yuans\/tonne.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"826\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-1024x826.webp\" alt=\"\" class=\"wp-image-14755\" style=\"width:700px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-1024x826.webp 1024w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-300x242.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-768x619.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-1536x1239.webp 1536w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-2048x1652.webp 2048w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-15x12.webp 15w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2024\/08\/Industries-600x484.webp 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c9tat actuel de l&#039;exploitation et de l&#039;utilisation des ressources en calcaire en Chine<\/h2>\n\n\n\n<p>Il est n\u00e9cessaire de combiner les conditions sp\u00e9cifiques du d\u00e9veloppement industriel actuel et la technologie des produits pour obtenir une utilisation efficace et \u00e0 haute valeur ajout\u00e9e des ressources en calcaire. En outre, il est essentiel d&#039;\u00e9tablir et de subdiviser la limite sup\u00e9rieure de la teneur en calcaire requise pour chaque produit afin de maximiser la valeur des ressources en calcaire \u00e0 haute teneur.<\/p>\n\n\n\n<p>Selon le changement de gradient de la teneur en CaO dans le calcaire, <\/p>\n\n\n\n<p>Le calcaire de haute qualit\u00e9 avec une teneur sup\u00e9rieure \u00e0 54% peut produire des produits \u00e0 haute valeur ajout\u00e9e \u00e0 base de carbonate de calcium l\u00e9ger et de carbonate de calcium nano. Les industries qui utilisent ces produits comprennent les plastiques haut de gamme, la fabrication de papier, les rev\u00eatements, la m\u00e9decine, l&#039;\u00e9lectronique, l&#039;alimentation et d&#039;autres. <\/p>\n\n\n\n<p>Le calcaire de qualit\u00e9 interm\u00e9diaire avec une teneur comprise entre 49% et 53% peut produire de l&#039;oxyde de calcium et de l&#039;hydroxyde de calcium actifs. Ces mat\u00e9riaux trouvent des applications dans les solvants m\u00e9tallurgiques, les produits chimiques et les industries de transformation alimentaire en profondeur. <\/p>\n\n\n\n<p>Le calcaire de faible qualit\u00e9 avec une teneur inf\u00e9rieure \u00e0 48% peut produire du ciment dans les industries de la construction.<\/p>\n\n\n\n<p>La r\u00e9partition des mati\u00e8res premi\u00e8res calcaires entre les diff\u00e9rentes industries concern\u00e9es en fonction de leur teneur en oxyde de calcium permet d&#039;obtenir une cha\u00eene industrielle enti\u00e8rement ferm\u00e9e. Cela garantit des ressources de haute qualit\u00e9, une pleine utilisation et une valeur maximale ainsi que des effets environnementaux.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-social-links has-normal-icon-size is-layout-flex wp-block-social-links-is-layout-flex\"><li class=\"wp-social-link wp-social-link-facebook  wp-block-social-link\"><a href=\"https:\/\/www.facebook.com\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M12 2C6.5 2 2 6.5 2 12c0 5 3.7 9.1 8.4 9.9v-7H7.9V12h2.5V9.8c0-2.5 1.5-3.9 3.8-3.9 1.1 0 2.2.2 2.2.2v2.5h-1.3c-1.2 0-1.6.8-1.6 1.6V12h2.8l-.4 2.9h-2.3v7C18.3 21.1 22 17 22 12c0-5.5-4.5-10-10-10z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">Facebook<\/span><\/a><\/li>\n\n<li class=\"wp-social-link wp-social-link-linkedin  wp-block-social-link\"><a href=\"https:\/\/www.linkedin.com\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M19.7,3H4.3C3.582,3,3,3.582,3,4.3v15.4C3,20.418,3.582,21,4.3,21h15.4c0.718,0,1.3-0.582,1.3-1.3V4.3 C21,3.582,20.418,3,19.7,3z M8.339,18.338H5.667v-8.59h2.672V18.338z M7.004,8.574c-0.857,0-1.549-0.694-1.549-1.548 c0-0.855,0.691-1.548,1.549-1.548c0.854,0,1.547,0.694,1.547,1.548C8.551,7.881,7.858,8.574,7.004,8.574z M18.339,18.338h-2.669 v-4.177c0-0.996-0.017-2.278-1.387-2.278c-1.389,0-1.601,1.086-1.601,2.206v4.249h-2.667v-8.59h2.559v1.174h0.037 c0.356-0.675,1.227-1.387,2.526-1.387c2.703,0,3.203,1.779,3.203,4.092V18.338z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">LinkedIn<\/span><\/a><\/li>\n\n<li class=\"wp-social-link wp-social-link-x  wp-block-social-link\"><a href=\"https:\/\/x.com\/\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M13.982 10.622 20.54 3h-1.554l-5.693 6.618L8.745 3H3.5l6.876 10.007L3.5 21h1.554l6.012-6.989L15.868 21h5.245l-7.131-10.378Zm-2.128 2.474-.697-.997-5.543-7.93H8l4.474 6.4.697.996 5.815 8.318h-2.387l-4.745-6.787Z\" \/><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">X<\/span><\/a><\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>Le calcaire est la principale mati\u00e8re premi\u00e8re pour la production de ciment. Il faut environ 1,4 \u00e0 1,5 tonne de calcaire pour produire 1 tonne de clinker de ciment. Selon les donn\u00e9es de [\u2026]<\/p>","protected":false},"author":2,"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 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":[42],"tags":[],"class_list":["post-14751","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>The high-end applications limestone has besides producing cement<\/title>\n<meta name=\"description\" content=\"Limestone is the raw material for cement production. In addition to producing cement, what other high-end applications does limestone have?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.epicmicron.com\/fr\/what-high-end-applications-does-limestone-have-besides-producing-cement\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What high-end applications does limestone have besides producing cement?\" \/>\n<meta property=\"og:description\" content=\"Limestone is the raw material for cement production. 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