{"id":489,"date":"2022-09-28T14:46:53","date_gmt":"2022-09-28T12:46:53","guid":{"rendered":"https:\/\/acepartnerz.kinsta.cloud\/ramr2d\/?post_type=boursier&p=489"},"modified":"2024-04-17T16:17:49","modified_gmt":"2024-04-17T14:17:49","slug":"beavogui-marie-constance","status":"publish","type":"boursier","link":"https:\/\/ace-partner.org\/ramr2d\/boursier\/beavogui-marie-constance\/","title":{"rendered":"BEAVOGUI Marie Constance"},"content":{"rendered":"\n

Soutenance de th\u00e8se : 19.05.2023<\/mark><\/strong>
La particularit\u00e9 du Traitement de la bauxite Guin\u00e9enne<\/strong><\/strong> <\/p>\n\n\n\n

Etude des possibilit\u00e9s d’augmentation de l’extraction de l\u2019alumine des bauxites guin\u00e9ennes en utilisant diff\u00e9rentes m\u00e9thodes d’enrichissement<\/p>\n\n\n\n

R\u00e9sum\u00e9 du sujet de doctorat<\/strong> :<\/p>\n\n\n\n


Ma th\u00e8se de doctorat porte sur l’optimisation de la lixiviation de la bauxite guin\u00e9enne afin d’augmenter la production d’alumine et de r\u00e9duire les \u00e9missions de boues rouges. L’\u00e9tude vise \u00e0 d\u00e9velopper l’industrie de l’alumine dans la r\u00e9gion de Boke en Guin\u00e9e en proposant des solutions technologiques pour am\u00e9liorer les performances techniques et \u00e9conomiques de la production. L’utilisation de la chaux et le pr\u00e9traitement de la bauxite pour la lixiviation \u00e0 basse temp\u00e9rature sont consid\u00e9r\u00e9s comme des m\u00e9thodes efficaces. L’objectif est d’optimiser la lixiviation de la bauxite guin\u00e9enne afin d’augmenter la production d’alumine tout en r\u00e9duisant les \u00e9missions de boues rouges. En outre, une \u00e9tude est men\u00e9e sur l’utilisation des boues rouges comme mati\u00e8re premi\u00e8re pour la m\u00e9tallurgie du fer, ce qui n\u00e9cessite une approche appropri\u00e9e du traitement et de l’utilisation de ces d\u00e9chets.<\/p>\n\n\n\n

R\u00e9sum\u00e9 des r\u00e9sultats obtenus<\/strong> :<\/p>\n\n\n\n

L’\u00e9tude s’est concentr\u00e9e sur la caract\u00e9risation physico-chimique et min\u00e9ralogique des bauxites d’Afrique de l’Ouest, en particulier en Guin\u00e9e et en Sierra Leone, r\u00e9v\u00e9lant une diversit\u00e9 significative dans la composition et la min\u00e9ralogie. L’ajout de CaO pendant la lixiviation \u00e0 basse temp\u00e9rature des bauxites de Sangaredi et de Fria a am\u00e9lior\u00e9 l’efficacit\u00e9 de la lixiviation, avec des effets sp\u00e9cifiques variant selon le type de bauxite. Les \u00e9tudes de pr\u00e9traitement et de lixiviation ont montr\u00e9 que l’enrichissement de la bauxite avant la lixiviation peut am\u00e9liorer l’efficacit\u00e9 de l’extraction de l’alumine. En outre, l’optimisation de la lixiviation des boues rouges a r\u00e9v\u00e9l\u00e9 des effets significatifs de la temp\u00e9rature, de la dur\u00e9e et de la concentration de la solution sur la dissolution de l’aluminium, ce qui permet d’envisager l’am\u00e9lioration du processus et la valorisation des d\u00e9chets. Ces r\u00e9sultats apportent des informations pr\u00e9cieuses \u00e0 l’industrie de l’extraction de l’aluminium.<\/p>\n\n\n\n

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CEREGE, Avril 2023<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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CEREGE, Avril 2023<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Soutenance de th\u00e8se : 19.05.2023La particularit\u00e9 du Traitement de la bauxite Guin\u00e9enne Etude des possibilit\u00e9s d’augmentation de l’extraction de l\u2019alumine des bauxites guin\u00e9ennes en utilisant diff\u00e9rentes m\u00e9thodes d’enrichissement R\u00e9sum\u00e9 du sujet de doctorat : Ma th\u00e8se de doctorat porte sur l’optimisation de la lixiviation de la bauxite guin\u00e9enne afin d’augmenter la production d’alumine et de […]<\/p>\n","protected":false},"featured_media":494,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"class_list":["post-489","boursier","type-boursier","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nBEAVOGUI Marie Constance - RAMR2D<\/title>\n<meta name=\"description\" content=\"Etude des possibilit\u00e9s d'augmentation de l'extraction de l\u2019alumine des bauxites guin\u00e9ennes en utilisant diff\u00e9rentes m\u00e9thodes d'enrichissement\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ace-partner.org\/ramr2d\/boursier\/beavogui-marie-constance\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BEAVOGUI Marie Constance\" \/>\n<meta property=\"og:description\" content=\"Etude des possibilit\u00e9s d'augmentation de l'extraction de l\u2019alumine des bauxites guin\u00e9ennes en utilisant diff\u00e9rentes m\u00e9thodes d'enrichissement\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ace-partner.org\/ramr2d\/boursier\/beavogui-marie-constance\/\" \/>\n<meta property=\"og:site_name\" content=\"RAMR2D\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-17T14:17:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ace-partner.org\/ramr2d\/wp-content\/uploads\/sites\/3\/2022\/09\/Marie-Constance.png\" \/>\n\t<meta property=\"og:image:width\" content=\"283\" \/>\n\t<meta property=\"og:image:height\" content=\"329\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"BEAVOGUI Marie Constance\" \/>\n<meta name=\"twitter:description\" content=\"Etude des possibilit\u00e9s d'augmentation de l'extraction de l\u2019alumine des bauxites guin\u00e9ennes en utilisant diff\u00e9rentes m\u00e9thodes d'enrichissement\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/ace-partner.org\/ramr2d\/wp-content\/uploads\/sites\/3\/2022\/09\/Marie-Constance.png\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ace-partner.org\\\/ramr2d\\\/boursier\\\/beavogui-marie-constance\\\/\",\"url\":\"https:\\\/\\\/ace-partner.org\\\/ramr2d\\\/boursier\\\/beavogui-marie-constance\\\/\",\"name\":\"BEAVOGUI Marie Constance - 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