{"id":6654,"date":"2021-04-04T13:21:11","date_gmt":"2021-04-04T13:21:11","guid":{"rendered":"https:\/\/www.aluminaceramicball.com\/?p=6654"},"modified":"2021-08-04T17:59:26","modified_gmt":"2021-08-04T17:59:26","slug":"processus-de-production-du-corindon-tabulaire","status":"publish","type":"post","link":"https:\/\/www.aluminaceramicball.com\/fr\/processus-de-production-du-corindon-tabulaire\/","title":{"rendered":"Processus de production du corindon tabulaire"},"content":{"rendered":"

Mati\u00e8re premi\u00e8re importante \u00e0 grande \u00e9chelle pour les mat\u00e9riaux r\u00e9fractaires, corindon tabulaire<\/a> est produit par l'utilisation d'un four \u00e0 cuve \u00e0 haute temp\u00e9rature pour produire des corindon tabulaire fritt\u00e9<\/a>qui se caract\u00e9rise par les \u00e9tapes suivantes.
\n1. Broyage \u00e0 billes.<\/strong> Utilisation du proc\u00e9d\u00e9 Bayer pour le br\u00fblage \u00e0 la lumi\u00e8re poudre d'alumine<\/a> comme mati\u00e8re premi\u00e8re pour le broyage continu \u00e0 boulets, la finesse et la surface sp\u00e9cifique doivent r\u00e9pondre aux exigences, ce qui favorisera le frittage et la densification du produit. poudre d'alumine.<\/a><\/p>\n

2. Dans la balle.<\/strong> La poudre broy\u00e9e est transform\u00e9e en boule \u00e0 l'aide d'un disque \u00e0 billes ou d'un tube \u00e0 billes. Les granul\u00e9s ainsi form\u00e9s doivent \u00eatre r\u00e9sistants pour \u00e9viter qu'ils ne se cassent pendant le transport vers le s\u00e9choir. Au cours du processus de granulation, les granul\u00e9s semi-finis ont une teneur en eau \u00e9lev\u00e9e, une stratification facile et des probl\u00e8mes de s\u00e9chage difficiles. La conception de l'optimisation du processus correspondant est r\u00e9alis\u00e9e et correctement r\u00e9solue.
\n3. Secs.<\/strong> Les boules vertes ainsi form\u00e9es sont plac\u00e9es dans le s\u00e9choir. L'air chaud \u00e0 contre-courant dans le four \u00e0 cuve est utilis\u00e9 pour le s\u00e9chage afin d'\u00e9liminer environ 15% (w) d'humidit\u00e9. Toutefois, la temp\u00e9rature dans le four \u00e0 cuve doit \u00eatre strictement contr\u00f4l\u00e9e pour \u00e9viter les fissures et la stratification, voire l'agglom\u00e9ration et le blocage dans la billette, ce qui entra\u00eenerait l'interruption du flux de billes et la d\u00e9t\u00e9rioration de la qualit\u00e9 du s\u00e9chage.
\n4. Frittage.<\/strong> Les billes vertes entrent dans le four \u00e0 cuve apr\u00e8s le s\u00e9chage. La temp\u00e9rature de frittage est de 1900 \u00e0 1950\u00b0C. En contr\u00f4lant la temp\u00e9rature et le d\u00e9bit de l'air chaud dans le four \u00e0 cuve, on obtient une structure de corindon en forme de plaque avec des cristaux enti\u00e8rement d\u00e9velopp\u00e9s et fritt\u00e9s.
\nApr\u00e8s le frittage, le refroidissement, le tri, l'inspection, le concassage et le criblage, des produits de diff\u00e9rentes tailles peuvent \u00eatre obtenus.<\/p>","protected":false},"excerpt":{"rendered":"

As a large-scale important raw material of refractory materials, tabular corundum is produced by using a high-temperature shaft kiln to produce sintered tabular corundum, which is characterized by the following process steps. 1. Ball milling. Using Bayer process light-burned alumina powder as the raw material for continuous ball milling, the fineness and specific surface area […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","site-sidebar-layout":"default","site-content-layout":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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