{"id":2604,"date":"2008-05-08T17:35:32","date_gmt":"2008-05-08T17:35:32","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/05\/08\/nuclaire-les-mi\/"},"modified":"2012-07-12T10:38:17","modified_gmt":"2012-07-12T10:38:17","slug":"nuclaire-les-mi","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/05\/08\/nuclaire-les-mi\/","title":{"rendered":"Nucl\u00e9aire : les mines \u00e0 fortes teneurs en Uranium."},"content":{"rendered":"<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/images_2253.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"169\"  src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/images_288.jpg\" alt=\"Images_2\" style=\"margin: 0px 5px 5px 0px;float: left\" \/><\/a> On a parl\u00e9 pour certains gisements de &quot;monstres&quot;, de <a href=\"http:\/\/fr.wikipedia.org\/wiki\/R%C3%A9acteur_nucl%C3%A9aire_naturel_d%27Oklo\">centrales nucl\u00e9aires naturelles<\/a>, et capables, pour certaines, avec leur teneur de d\u00e9marrer naturellement. <br \/>On a d&rsquo;ailleurs soup\u00e7onn\u00e9 des phases de marche et de r\u00e9veil, et des phases de pause, notamment au Gabon, sur plusieurs centaines de milliers d&rsquo;ann\u00e9es. <br \/>Si la moyenne pond\u00e9r\u00e9e de production de l&rsquo;uranium ne d\u00e9passe pas 1 kg\/ par tonne extraite, certains gisements vont au del\u00e0 des 100 kg, avec des probl\u00e8mes bien sp\u00e9cifiques.<br \/>Parce que l&rsquo;uranium, c&rsquo;est b\u00eatement radioactif et que les humains ne le supportent pas&#8230;<br \/>La moindre manipulation entraine donc des prix monstrueux, car des mesures sp\u00e9cifiques sont n\u00e9cessaires. <a href=\"http:\/\/eldib.wordpress.com\/2007\/10\/18\/penurie-et-fin-progressive-de-luranium\/\">&nbsp;<\/a><a href=\"http:\/\/eldib.wordpress.com\/2007\/10\/18\/penurie-et-fin-progressive-de-luranium\/\">Cigar Lake<\/a> devait voir congeler son front de taille. <br \/>Le transport du minerai est probl\u00e9matique (interdit si le minerai contient plus de 2 %), la radioactivit\u00e9 dans l&rsquo;usine de traitement est aussi \u00e0 traiter sp\u00e9cifiquement. <\/p>\n<p>En outre, si ces monstres sont couteux \u00e0 exploiter, ils font perdre leur rentabilit\u00e9 aux<a href=\"http:\/\/www.geowiki.fr\/index.php?title=Uranium\"> sites classiques<\/a>, beaucoup moins riches.<br \/>Le probl\u00e8me \u00e9conomique ici se fait jour.<br \/>Ces gisements entrainent des frais fixes importants (et des frais variables tr\u00e8s mesur\u00e9s) et la rentabilit\u00e9 \u00e9conomique sera donc tr\u00e8s al\u00e9atoire : forte en p\u00e9riode d&rsquo;apog\u00e9e de la mine, <a href=\"http:\/\/www.mines-energie.org\/Dossiers\/Nucl2002_12.pdf\">tr\u00e8s vite d\u00e9ficitaire<\/a> lors du d\u00e9clin. <br \/>En France aussi, certains gisements, de trop faibles teneurs, par contre pour \u00eatre exploit\u00e9s, ne devraient pas davantage l&rsquo;\u00eatre. <br \/>En effet, la flamb\u00e9e du cout de l&rsquo;extraction ne les rend<a href=\"http:\/\/www.leblogenergie.com\/2007\/02\/uranium_gap.html#more\"> pas plus rentables<\/a>&#8230;<\/p>\n<p>Photo : int\u00e9r\u00eat g\u00e9n\u00e9ral.info<\/p>\n","protected":false},"excerpt":{"rendered":"<p>On a parl\u00e9 pour certains gisements de &quot;monstres&quot;, de centrales nucl\u00e9aires naturelles, et capables, pour certaines, avec leur teneur de d\u00e9marrer naturellement. On a d&rsquo;ailleurs soup\u00e7onn\u00e9 des phases de marche et de r\u00e9veil, et des phases de pause, notamment au Gabon, sur plusieurs centaines de milliers d&rsquo;ann\u00e9es. Si la moyenne pond\u00e9r\u00e9e de production de l&rsquo;uranium [&hellip;]<\/p>\n","protected":false},"author":198,"featured_media":8764,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[987],"class_list":["post-2604","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energie-fossile","tag-sites-classiques-tres-vite-deficitaire-centrales-nucleaires-naturelles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nucl\u00e9aire : les mines \u00e0 fortes teneurs en Uranium. - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/05\/08\/nuclaire-les-mi\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Nucl\u00e9aire : les mines \u00e0 fortes teneurs en Uranium. - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"On a parl\u00e9 pour certains gisements de &quot;monstres&quot;, de centrales nucl\u00e9aires naturelles, et capables, pour certaines, avec leur teneur de d\u00e9marrer naturellement. On a d&rsquo;ailleurs soup\u00e7onn\u00e9 des phases de marche et de r\u00e9veil, et des phases de pause, notamment au Gabon, sur plusieurs centaines de milliers d&rsquo;ann\u00e9es. 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