{"id":16110,"date":"2025-10-15T08:49:28","date_gmt":"2025-10-15T08:49:28","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=16110"},"modified":"2025-10-15T08:49:32","modified_gmt":"2025-10-15T08:49:32","slug":"key-control-points-in-the-jet-milling-process-of-ultrafine-iron-oxide-pigments","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/fr\/key-control-points-in-the-jet-milling-process-of-ultrafine-iron-oxide-pigments\/","title":{"rendered":"Points de contr\u00f4le cl\u00e9s dans le proc\u00e9d\u00e9 de broyage par jet d&#039;encre de pigments d&#039;oxyde de fer ultrafins"},"content":{"rendered":"<p>Pigments d&#039;oxyde de fer, principalement rouges, jaunes, noirs et bruns \u00e0 base d&#039;oxydes de fer. Ils pr\u00e9sentent une excellente dispersibilit\u00e9, une excellente r\u00e9sistance \u00e0 la lumi\u00e8re et aux intemp\u00e9ries. Parmi ceux-ci, le rouge d&#039;oxyde de fer est le plus utilis\u00e9. Bien que les pigments d&#039;oxyde de fer pr\u00e9cipit\u00e9s soient initialement tr\u00e8s fins, ils ont tendance \u00e0 former de gros agglom\u00e9rats lors de la filtration et du s\u00e9chage. Ceci est d\u00fb aux forces de Van der Waals, aux liaisons hydrog\u00e8ne et aux charges \u00e9lectrostatiques. Ces agglom\u00e9rats emp\u00eachent leur utilisation directe dans les rev\u00eatements haut de gamme, ce qui fait de la pulv\u00e9risation par jet une \u00e9tape essentielle pour obtenir des particules d&#039;oxyde de fer ultrafines.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Iron-Oxide-Pigments.webp\" alt=\"\" class=\"wp-image-16112\" style=\"width:690px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Iron-Oxide-Pigments.webp 750w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Iron-Oxide-Pigments-300x300.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Iron-Oxide-Pigments-100x100.webp 100w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Iron-Oxide-Pigments-12x12.webp 12w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Iron-Oxide-Pigments-600x600.webp 600w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<p>Jet pulverization, one of the most common methods for ultrafine grinding, utilizes high-speed gas streams to impart energy and break down solid materials. Researchers successfully produced easily dispersible, ultrafine iron oxide pigments using a fluidized bed jet mill system. Under specific conditions, they achieved notable production rates and fineness levels for different iron oxide pigments.<\/p>\n\n\n\n<p>Les exigences de contr\u00f4le sp\u00e9cifiques et les probl\u00e8mes courants dans le processus de broyage par jet sont les suivants\u00a0:<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-77839285d6dc3e901535e8723b997529\">1. Pr\u00e9sentation du proc\u00e9d\u00e9 de broyage par jet<\/h2>\n\n\n\n<p>This process primarily consists of a fluidized bed or disc jet mill, an air compressor system, feeding, mixing, and dispersion agent addition systems, quantitative feeding devices, screening, de-ironing, dust collection, and packaging systems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-016c49c6a8c6518a65d7dc58764ea02b\">2. Points de contr\u00f4le cl\u00e9s pour le broyage par jet<\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-192e2843419c3ba96b06a6cd25ac42cf\" style=\"font-size:20px\">(1) R\u00e9glage de la finesse et du rendement : <\/h3>\n\n\n\n<p>Le r\u00e9glage de la vitesse du classificateur dans un broyeur \u00e0 jets \u00e0 lit fluidis\u00e9 a un impact direct sur la finesse et le rendement Hegman.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-b13bff7d9d40e41a97849835a3f9b2be\" style=\"font-size:20px\">(2) Pr\u00e9vention du pontage des tr\u00e9mies : <\/h3>\n\n\n\n<p>L&#039;installation d&#039;un vibrateur sur l&#039;alimentateur \u00e0 vis emp\u00eache la formation de ponts de mat\u00e9riau, garantissant ainsi des d\u00e9bits d&#039;alimentation constants et un rendement stable.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-69971cbf1522cdf30363e32602668d4f\" style=\"font-size:20px\">(3) R\u00e9glage des param\u00e8tres du processus\u00a0: <\/h3>\n\n\n\n<p>La pression de travail et le d\u00e9bit d&#039;alimentation peuvent \u00eatre ajust\u00e9s dans certaines limites pour influencer la qualit\u00e9 du produit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-0da8cba3d2481f49fb39c92c3badff09\" style=\"font-size:20px\">(4) Changement de couleur apr\u00e8s broyage : <\/h3>\n\n\n\n<p>La pulv\u00e9risation par jet peut alt\u00e9rer la couleur du pigment d&#039;oxyde de fer. Une pression plus \u00e9lev\u00e9e peut accentuer ce changement, mais les param\u00e8tres de broyage ne sont pas recommand\u00e9s pour un ajustement de couleur \u00e0 grande \u00e9chelle.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-0d6da4ee0e9e9ecc25ca83960468b92b\" style=\"font-size:20px\">(5) Finesse vs. Puret\u00e9 : <\/h3>\n\n\n\n<p>La puret\u00e9 du produit est g\u00e9n\u00e9ralement inf\u00e9rieure \u00e0 sa finesse et d\u00e9pend de la teneur en r\u00e9sidus de la mati\u00e8re premi\u00e8re. Le broyage par jet ultrafin am\u00e9liore la puret\u00e9, mais ne peut \u00e9galer la finesse.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-ae997f485bd04454f8886ba8f49bfd5c\" style=\"font-size:20px\">(6) Contr\u00f4le du d\u00e9bit d&#039;alimentation : <\/h3>\n\n\n\n<p>La fr\u00e9quence de l&#039;alimentateur \u00e0 vis permet de contr\u00f4ler la cadence de production. La quantit\u00e9 d&#039;alimentation d\u00e9pend de la densit\u00e9 apparente du mat\u00e9riau et de l&#039;\u00e9tanch\u00e9it\u00e9 du syst\u00e8me.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-a06304253436cef025e12d161257b068\" style=\"font-size:20px\">(7) Optimisation de la pression de travail : <\/h3>\n\n\n\n<p>L\u2019augmentation de la pression de travail peut am\u00e9liorer la finesse et r\u00e9duire la viscosit\u00e9, mais seulement jusqu\u2019\u00e0 une certaine limite.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"967\" height=\"802\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Jet-Mills-1.webp\" alt=\"Broyeurs \u00e0 jets 1\" class=\"wp-image-16090\" style=\"width:719px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Jet-Mills-1.webp 967w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Jet-Mills-1-300x249.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Jet-Mills-1-768x637.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Jet-Mills-1-14x12.webp 14w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/10\/Jet-Mills-1-600x498.webp 600w\" sizes=\"(max-width: 967px) 100vw, 967px\" \/><figcaption class=\"wp-element-caption\">Jet Mills par Epic Powder<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-23808db0d04403acd916a203287fcaea\" style=\"font-size:20px\">(8) Alignement de la buse et de l&#039;alimentation : <\/h3>\n\n\n\n<p>L&#039;entr\u00e9e d&#039;alimentation du Venturi doit \u00eatre align\u00e9e avec la chemise sup\u00e9rieure de la chambre de broyage du broyeur \u00e0 jet. Des buses de broyage mal align\u00e9es peuvent provoquer un refoulement de mat\u00e9riau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-515cc441af13086dd754924df6d6dd31\" style=\"font-size:20px\">(9) Facteurs de finesse du produit : <\/h3>\n\n\n\n<p>La finesse finale d\u00e9pend de la m\u00e9thode de production de la mati\u00e8re premi\u00e8re, des conditions du processus, de la morphologie des particules, de la forme des cristaux et de la taille des agglom\u00e9rats.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-ec1e747f2e35e45d39d5c0c92d3218f9\" style=\"font-size:20px\">(10) Absorption et viscosit\u00e9 de l&#039;huile : <\/h3>\n\n\n\n<p>Pour l&#039;oxyde de fer jaune, ces propri\u00e9t\u00e9s sont \u00e9galement li\u00e9es aux caract\u00e9ristiques de la mati\u00e8re premi\u00e8re. Des additifs ou un pressage physique peuvent les att\u00e9nuer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-97e29e73ca15a7b00272cae67fd30f59\" style=\"font-size:20px\">(11) Traitement des fuites de poussi\u00e8re : <\/h3>\n\n\n\n<p>Les fuites de poussi\u00e8re proviennent d&#039;un d\u00e9s\u00e9quilibre de pression du syst\u00e8me, potentiellement caus\u00e9 par de faibles d\u00e9bits d&#039;alimentation ou des sacs filtrants obstru\u00e9s dans le d\u00e9poussi\u00e9reur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-3f72eae2f86bc08cec8fc10c3886d71b\" style=\"font-size:20px\">(12) Entretien du syst\u00e8me de d\u00e9poussi\u00e9rage : <\/h3>\n\n\n\n<p>Le syst\u00e8me doit g\u00e9rer une quantit\u00e9 importante d&#039;air \u00e9vacu\u00e9 pour maintenir sa stabilit\u00e9 op\u00e9rationnelle. L&#039;encrassement des manches filtrantes, d\u00fb au vieillissement, \u00e0 la pr\u00e9sence de mat\u00e9riaux collants ou \u00e0 une forte humidit\u00e9, augmente la contre-pression et n\u00e9cessite un nettoyage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-ast-global-color-0-color has-text-color has-link-color wp-elements-14e6ad4a543526f5c5dec2220b17dcd3\" style=\"font-size:20px\">(13) Contr\u00f4le qualit\u00e9 final :<\/h3>\n\n\n\n<p>Les s\u00e9parateurs et tamis magn\u00e9tiques sont des \u00e9tapes finales cruciales pour \u00e9liminer les contaminants m\u00e9talliques et autres contaminants \u00e9trangers, garantissant une qualit\u00e9 de produit \u00e9lev\u00e9e apr\u00e8s le processus de pulv\u00e9risation par jet.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-vivid-red-color has-text-color has-link-color wp-elements-ce764007aa4f316600c01e4926623f3c\">Machines \u00e0 poudre EPIC<\/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=\"Obtention d&#039;une poudre de carbone poreuse ultrafine gr\u00e2ce \u00e0 la technologie EPIC Jet Mill\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/rLbzG8YsJdo?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>EPIC Powder Machinery est un fournisseur leader de solutions avanc\u00e9es de traitement des poudres, sp\u00e9cialis\u00e9 dans la conception et la fabrication de broyeurs \u00e0 jet haute performance. Notre expertise en technologie de pulv\u00e9risation par jet permet un contr\u00f4le pr\u00e9cis de la granulom\u00e9trie pour des applications exigeantes comme les pigments d&#039;oxyde de fer. Epic Powder propose des syst\u00e8mes efficaces et fiables qui aident ses clients \u00e0 obtenir une qualit\u00e9 de produit sup\u00e9rieure et une performance op\u00e9rationnelle am\u00e9lior\u00e9e.<\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f15081-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"15081\">\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\/16110#wpcf7-f15081-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\/16110#wpcf7-f15081-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"15081\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.5\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" 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Ils pr\u00e9sentent une excellente dispersibilit\u00e9, une excellente r\u00e9sistance \u00e0 la lumi\u00e8re et aux intemp\u00e9ries. 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