{"id":3772,"date":"2025-12-26T13:39:49","date_gmt":"2025-12-26T05:39:49","guid":{"rendered":"https:\/\/calcium-carbonate.epic-powder.com\/?post_type=astra-portfolio&#038;p=3772"},"modified":"2025-12-26T13:39:52","modified_gmt":"2025-12-26T05:39:52","slug":"how-did-a-large-indian-calcium-carbonate-producer-achieve-high-efficiency-stearic-acid-coating-modification-at-5-t-h","status":"publish","type":"astra-portfolio","link":"https:\/\/calcium-carbonate.epic-powder.com\/fr\/astra-portfolio\/how-did-a-large-indian-calcium-carbonate-producer-achieve-high-efficiency-stearic-acid-coating-modification-at-5-t-h\/","title":{"rendered":"Comment un grand producteur indien de carbonate de calcium a-t-il r\u00e9ussi \u00e0 modifier le rev\u00eatement d&#039;acide st\u00e9arique avec une grande efficacit\u00e9 \u00e0 5 t\/h ?"},"content":{"rendered":"<p>Pouss\u00e9e par la croissance rapide des march\u00e9s des plastiques, du caoutchouc et des charges pour c\u00e2bles en Inde, une importante entreprise locale de traitement des min\u00e9raux non m\u00e9talliques avait un besoin urgent d&#039;accro\u00eetre sa capacit\u00e9 de production de carbonate de calcium activ\u00e9 (PCC\/GCC) gr\u00e2ce \u00e0 des technologies avanc\u00e9es de modification du carbonate de calcium.<\/p>\n\n\n\n<p>Les principaux d\u00e9fis rencontr\u00e9s par le client \u00e9taient les suivants\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Comment maintenir un d\u00e9bit \u00e9lev\u00e9 de 5 t\/h<\/li>\n\n\n\n<li>Tout en assurant un taux de rev\u00eatement d&#039;acide st\u00e9arique sup\u00e9rieur \u00e0 99%<\/li>\n\n\n\n<li>Et r\u00e9soudre efficacement les probl\u00e8mes d&#039;application en aval caus\u00e9s par l&#039;agglom\u00e9ration et le rev\u00eatement irr\u00e9gulier des poudres ultrafines<\/li>\n<\/ul>\n\n\n\n<p><strong>Aper\u00e7u du projet<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Emplacement:<\/strong> Inde (Zone industrielle du Gujarat)<\/li>\n\n\n\n<li><strong>Mat\u00e9riel:<\/strong> <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/machines\/ball-mill\/\">Carbonate de calcium moulu <\/a>(GCC, d50\u00a0: 2\u201310 \u03bcm)<\/li>\n\n\n\n<li><strong>Modificateur de surface\u00a0:<\/strong> Acide st\u00e9arique<\/li>\n\n\n\n<li><strong>Capacit\u00e9 cible :<\/strong> 5 tonnes\/heure<\/li>\n\n\n\n<li><strong>\u00c9quipement de base\u00a0:<\/strong> <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/\">Poudre EPIC<\/a> <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/surface-modification\/\">Machine de rev\u00eatement \u00e0 trois rouleaux<\/a><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"419\" src=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/three-roller-mill-coating-machine.webp\" alt=\"machine \u00e0 enrober \u00e0 trois rouleaux\" class=\"wp-image-3773\" srcset=\"https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/three-roller-mill-coating-machine.webp 800w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/three-roller-mill-coating-machine-300x157.webp 300w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/three-roller-mill-coating-machine-768x402.webp 768w, https:\/\/calcium-carbonate.epic-powder.com\/wp-content\/uploads\/2025\/12\/three-roller-mill-coating-machine-18x9.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">machine \u00e0 enrober \u00e0 trois rouleaux<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi choisir une machine d&#039;enduction \u00e0 trois rouleaux ?<\/h2>\n\n\n\n<p>Apr\u00e8s avoir compar\u00e9 les m\u00e9langeurs \u00e0 grande vitesse et les syst\u00e8mes d&#039;enrobage par broyeur vortex, le client a finalement opt\u00e9 pour la technologie de modification continue \u00e0 trois rouleaux d&#039;EPIC Powder. Ce choix s&#039;est fond\u00e9 sur son principe d&#039;enrobage triangulaire unique, qui offre des avantages ind\u00e9niables pour le traitement de surface \u00e0 grande capacit\u00e9 et d&#039;une grande uniformit\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Proc\u00e9d\u00e9 continu \u00e0 trois chambres pour rev\u00eatement \u00e0 couverture compl\u00e8te<\/h3>\n\n\n\n<p>Contrairement aux m\u00e9langeurs discontinus, la machine d&#039;enrobage \u00e0 trois rouleaux comporte trois chambres de modification dispos\u00e9es en triangle. Entra\u00een\u00e9s par des rotors \u00e0 grande vitesse, le mat\u00e9riau et l&#039;acide st\u00e9arique atomis\u00e9 traversent successivement les trois chambres.<\/p>\n\n\n\n<p>Cette conception garantit que m\u00eame \u00e0 un d\u00e9bit \u00e9lev\u00e9 de <strong>5 t\/h<\/strong>Le mat\u00e9riau subit alors un cisaillement, une collision et une dispersion suffisants, permettant d&#039;obtenir un rev\u00eatement uniforme et sans zone morte.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Contr\u00f4le pr\u00e9cis de la temp\u00e9rature pour une fusion optimale de l&#039;acide st\u00e9arique<\/h3>\n\n\n\n<p>Le contr\u00f4le de la temp\u00e9rature est crucial dans la modification de l&#039;acide st\u00e9arique\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Si la temp\u00e9rature est trop basse, l&#039;acide st\u00e9arique ne fond pas compl\u00e8tement.<\/li>\n\n\n\n<li>Si la temp\u00e9rature est trop \u00e9lev\u00e9e, une d\u00e9coloration ou une d\u00e9gradation du min\u00e9ral peut se produire.<\/li>\n<\/ul>\n\n\n\n<p><strong>Le <a href=\"https:\/\/calcium-carbonate.epic-powder.com\/fr\/contact\/\">Poudre EPIC<\/a> Le syst\u00e8me int\u00e8gre plusieurs \u00e9tapes contr\u00f4l\u00e9es avec pr\u00e9cision\u00a0:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Alimentation automatique\u00a0:<\/strong> La poudre de carbonate de calcium brut est achemin\u00e9e par une vis sans fin vers l&#039;unit\u00e9 de classification et de pr\u00e9chauffage.<\/li>\n\n\n\n<li><strong>Dosage additif\u00a0:<\/strong> L&#039;acide st\u00e9arique est fondu dans un r\u00e9servoir de dosage et pomp\u00e9 automatiquement \u00e0 un d\u00e9bit synchronis\u00e9 avec le flux principal de mati\u00e8re.<\/li>\n\n\n\n<li><strong>Modification du noyau :<\/strong> Le mat\u00e9riau p\u00e9n\u00e8tre dans la machine d&#039;enrobage \u00e0 trois rouleaux EPIC Powder. \u00c0 l&#039;int\u00e9rieur des trois chambres de modification, les particules sont expos\u00e9es \u00e0 une turbulence intense g\u00e9n\u00e9r\u00e9e par des vitesses de rotor lin\u00e9aire \u00e9lev\u00e9es (jusqu&#039;\u00e0 60 m\/s), permettant aux mol\u00e9cules d&#039;acide st\u00e9arique de former des liaisons chimiques fortes avec la surface des particules.<\/li>\n\n\n\n<li><strong>Circulation post-traitement\u00a0:<\/strong> La poudre de modification au carbonate de calcium est collect\u00e9e par un syst\u00e8me de cyclone et combin\u00e9e \u00e0 une classification auxiliaire pour \u00e9liminer les \u00e9ventuels agglom\u00e9rats mineurs qui pourraient se former.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">R\u00e9sultats d&#039;exploitation et commentaires des clients<\/h2>\n\n\n\n<p>Apr\u00e8s une phase de fonctionnement sur site dans l&#039;usine de production indienne, le syst\u00e8me a d\u00e9montr\u00e9 une excellente stabilit\u00e9 et d&#039;excellentes performances\u00a0:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Param\u00e8tre<\/th><th>Exigence du client<\/th><th>Performance r\u00e9elle<\/th><\/tr><\/thead><tbody><tr><td>d\u00e9bit<\/td><td>5,0 t\/h<\/td><td>5,2 t\/h<\/td><\/tr><tr><td>Taux de rev\u00eatement<\/td><td>\u2265 98%<\/td><td>99.2%<\/td><\/tr><tr><td>Absorption d&#039;huile<\/td><td>\u2264 18 g\/100 g<\/td><td>16,5 g\/100 g<\/td><\/tr><tr><td>Taux d&#039;activation<\/td><td>\u2265 98%<\/td><td>99.5% (test de flottaison compl\u00e8te dans l&#039;eau)<\/td><\/tr><\/tbody><\/table><\/figure>\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\/astra-portfolio\/3772#wpcf7-f16-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" 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