{"id":21765,"date":"2023-12-12T14:44:46","date_gmt":"2023-12-12T06:44:46","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=new&#038;p=21765"},"modified":"2026-08-06T10:03:27","modified_gmt":"2026-08-06T02:03:27","slug":"traitement-de-lextraction-de-lor-alluvial","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/fr\/new\/alluvial-gold-mining-processing\/","title":{"rendered":"Extraction et traitement de l'or alluvial"},"content":{"rendered":"<p><strong>R\u00e9sum\u00e9<\/strong><\/p>\n<p><strong>S\u00e9paration par gravit\u00e9<\/strong> remains the cornerstone of alluvial gold extraction, achieving recovery rates exceeding 90% in large-scale operations. Modern methodologies include:<\/p>\n<ul>\n<li><strong>Chain-bucket dredges<\/strong>&nbsp;for mid-to-large deposits<\/li>\n<li><strong>Hydro-mechanical mining<\/strong>&nbsp;for riverbanks and terraces<\/li>\n<li><strong>Compact manual\/mechanized systems<\/strong> for remote areas processing employ modular circuits combining <strong>trommel screens, sluices, jigs, and shaking tables<\/strong>, while China&#8217;s strict environmental regulations have phased out mercury amalgamation in favor of <strong>mobile\/semi-fixed plants<\/strong>&nbsp;with closed-loop water systems.<\/li>\n<\/ul>\n<h2>&nbsp;<\/h2>\n<h2>Introduction: The Origin and Nature of Alluvial Gold<\/h2>\n<p>Alluvial gold forms through natural weathering of primary deposits, where gold particles detach from host rock and accumulate in riverbeds, floodplains, or glacial sediments. Key characteristics include:<\/p>\n<ul>\n<li><strong>Particle diversity<\/strong>: Ranging from coarse nuggets (&gt;5 mm) to flour-sized grains (&lt;0.1 mm).<\/li>\n<li><strong>Color variation<\/strong>: The color varies depending on the fineness. More than 90% is reddish yellow, 80% is light yellow, and 70% is greenish yellow.<\/li>\n<li><strong>High liberation<\/strong>: Requires minimal crushing due to pre-liberated particles embedded in sediments.<\/li>\n<\/ul>\n<p>Successful exploitation demands careful planning at every stage, beginning with site assessment.<\/p>\n<p>&nbsp;<\/p>\n<h2>Pr\u00e9cautions pour l'extraction de l'or alluvial<\/h2>\n<p><strong>Les \u00e9l\u00e9ments \u00e0 prendre en compte lors de l'extraction de l'or alluvial sont les suivants :<\/strong><\/p>\n<h3>Before Mining<\/h3>\n<ul>\n<li>Choisir un site d'extraction appropri\u00e9. Les sites d'extraction de l'or alluvial doivent \u00eatre situ\u00e9s dans le lit des rivi\u00e8res, des lacs et d'autres zones o\u00f9 l'or alluvial est r\u00e9parti.<\/li>\n<li>Effectuer des travaux d'exploration. Recueillir des informations sur la distribution de l'or alluvial, son contenu et les conditions d'exploitation au cours de la prospection.<\/li>\n<li>Suivre les proc\u00e9dures appropri\u00e9es. L'exploitation de l'or alluvial n\u00e9cessite g\u00e9n\u00e9ralement des proc\u00e9dures appropri\u00e9es, telles que des permis d'exploitation.<\/li>\n<\/ul>\n<h3>Exploitation mini\u00e8re<\/h3>\n<ul>\n<li>Veiller \u00e0 la s\u00e9curit\u00e9. L'extraction de l'or alluvial est une op\u00e9ration \u00e0 haut risque. Respectez scrupuleusement les proc\u00e9dures de s\u00e9curit\u00e9 et prenez des mesures de protection.<\/li>\n<li>Choisir les m\u00e9thodes d'extraction de mani\u00e8re rationnelle. Les m\u00e9thodes d'extraction de l'or alluvial comprennent l'excavation, le lavage \u00e0 la bat\u00e9e, etc. Choisissez le proc\u00e9d\u00e9 appropri\u00e9 en fonction des conditions sp\u00e9cifiques du site minier.<\/li>\n<li>Pay attention to environmental protection. Alluvial gold mining will produce particular pollution, and take measures to prevent environmental pollution.<\/li>\n<\/ul>\n<h3>After Mining<\/h3>\n<ul>\n<li>Remise en \u00e9tat des zones mini\u00e8res. Apr\u00e8s l'exploitation mini\u00e8re, la zone mini\u00e8re doit \u00eatre r\u00e9par\u00e9e et restaur\u00e9e pour retrouver son aspect d'origine.<\/li>\n<li>Effectuer une analyse statistique. Effectuer une analyse statistique de la situation mini\u00e8re afin de fournir une r\u00e9f\u00e9rence pour les futures activit\u00e9s mini\u00e8res.<\/li>\n<\/ul>\n<p>Les pr\u00e9cautions \u00e0 prendre pour <a href=\"https:\/\/www.jxscmachine.com\/fr\/projet-de-minerai-epc\/lexploitation-de-lor-placerien\/\"><strong>l'extraction de l'or alluvial<\/strong><\/a> doit \u00e9galement \u00eatre d\u00e9termin\u00e9e en fonction des conditions sp\u00e9cifiques de l'exploitation mini\u00e8re, et l'op\u00e9ration doit \u00eatre combin\u00e9e avec la situation r\u00e9elle.<\/p>\n<p>&nbsp;<\/p>\n<h2>\u00c9quipement pour l'extraction de l'or alluvial<\/h2>\n<h3>Types of Alluvial Gold Mining Equipment<\/h3>\n<p><strong>\u00c9quipement pour l'exploitation de l'or plac\u00e9rien<\/strong> est principalement utilis\u00e9 pour l'extraction et la r\u00e9cup\u00e9ration de l'or plac\u00e9rien. Il existe de nombreux types d'\u00e9quipements d'extraction de l'or plac\u00e9rien. En fonction des diff\u00e9rentes m\u00e9thodes et processus d'extraction, on peut les classer dans les cat\u00e9gories suivantes :<\/p>\n<ul>\n<li><b><\/b><strong><b>Mat\u00e9riel d'excavation<\/b><\/strong><strong><b><br \/>\n<\/b><\/strong>Le mat\u00e9riel d'excavation permet d'exploiter les gisements d'or plac\u00e9rien, notamment les excavateurs, les chargeurs, les bulldozers, etc. Les excavateurs peuvent exploiter les gisements d'or \u00e0 ciel ouvert, tandis que les chargeurs et les bulldozers peuvent exploiter les gisements d'or plac\u00e9riens souterrains.<\/li>\n<li><b><\/b><strong><b>\u00c9quipement d'\u00e9lutriation<\/b><\/strong><strong><b><br \/>\n<\/b><\/strong>L'\u00e9quipement d'\u00e9lutriation s\u00e9pare l'or plac\u00e9rien du sable, y compris les secoueurs, les s\u00e9parateurs \u00e0 spirale, les centrifugeuses, etc. Le secoueur est un \u00e9quipement d'\u00e9lutriation traditionnel qui pr\u00e9sente les avantages d'une structure simple et d'une utilisation ais\u00e9e. Le <a href=\"https:\/\/www.jxscmachine.com\/fr\/separateur-de-gravite\/chute-en-spirale\/\">s\u00e9parateur en spirale<\/a> La centrifugeuse pr\u00e9sente les avantages d'une grande efficacit\u00e9 de s\u00e9paration et d'un taux de r\u00e9cup\u00e9ration \u00e9lev\u00e9. La centrifugeuse pr\u00e9sente les avantages d'une grande efficacit\u00e9 de s\u00e9paration et d'une grande facilit\u00e9 d'utilisation.<\/li>\n<li><b><\/b><strong><b>O<\/b><\/strong><strong><b>autres dispositifs<\/b><\/strong><strong><b><br \/>\n<\/b><\/strong>D'autres \u00e9quipements sont principalement utilis\u00e9s pour le transport et le stockage de l'or alluvial, notamment les camions, les bandes transporteuses, les silos de stockage, etc.<\/li>\n<\/ul>\n<h3>Factors Affecting The Selection of Alluvial Gold Mining Equipment<\/h3>\n<p>Le choix du mat\u00e9riel d'extraction de l'or alluvial\/plac\u00e9rien doit \u00eatre bas\u00e9 sur les conditions sp\u00e9cifiques du site minier, en tenant compte principalement des facteurs suivants :<\/p>\n<ul>\n<li><b><\/b><strong><b>M\u00e9thode d'exploitation mini\u00e8re<\/b><\/strong><br \/>\nLes diff\u00e9rentes m\u00e9thodes d'exploitation mini\u00e8re n\u00e9cessitent des \u00e9quipements suppl\u00e9mentaires. Par exemple, la m\u00e9thode d'excavation n\u00e9cessite du mat\u00e9riel d'excavation, et la m\u00e9thode d'\u00e9lutriation n\u00e9cessite du mat\u00e9riel d'\u00e9lutriation.<\/li>\n<li><b><\/b><strong><b>Type de d\u00e9p\u00f4t<\/b><\/strong><br \/>\nLes diff\u00e9rents types de gisements min\u00e9raux ont des exigences suppl\u00e9mentaires en mati\u00e8re d'\u00e9quipement. Par exemple, les mines \u00e0 ciel ouvert peuvent utiliser du mat\u00e9riel d'excavation, tandis que les mines souterraines n\u00e9cessitent un \u00e9quipement plus professionnel.<\/li>\n<li><b><\/b><strong><b>Montant du d\u00e9p\u00f4t<\/b><\/strong><br \/>\nPlus le d\u00e9p\u00f4t est important, plus le mat\u00e9riel n\u00e9cessaire est important.<\/li>\n<li><b><\/b><strong><b>E<\/b><\/strong><strong><b>co\u00fbt \u00e9conomique<\/b><\/strong><br \/>\nLe prix et les co\u00fbts d'entretien de l'\u00e9quipement doivent \u00e9galement \u00eatre pris en compte.<\/li>\n<\/ul>\n<p>Lors de l'utilisation du mat\u00e9riel d'extraction de l'or alluvial, il convient de pr\u00eater attention \u00e0 la s\u00e9curit\u00e9 et \u00e0 la protection de l'environnement et de suivre scrupuleusement les proc\u00e9dures d'exploitation s\u00fbres afin d'\u00e9viter les accidents. Parall\u00e8lement, il convient de prendre des mesures pour pr\u00e9venir la pollution de l'environnement.<\/p>\n<p>&nbsp;<\/p>\n<h2>Traitement du lavage de l'or alluvial<\/h2>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/12\/Alluvial-Gold-Washing.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21766\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/12\/Alluvial-Gold-Washing.jpg\" alt=\"Lavage de l&#039;or alluvial\" width=\"1000\" height=\"439\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/12\/Alluvial-Gold-Washing.jpg 1000w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/12\/Alluvial-Gold-Washing-768x337.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Cette installation est une station de lavage d'or de 100TPH ; dans cette usine de traitement, nous utilisons un tamis Trommel pour tamiser les roches de plus de 20 mm, un concentrateur centrifuge et une table \u00e0 secousses pour capturer les concentr\u00e9s d'or fins et les particules d'or.<\/p>\n<p>Les <a href=\"https:\/\/www.jxscmachine.com\/fr\/lavage-de-lor\/crible-a-trommel\/\">Cribles \u00e0 tambour<\/a> is designed with mobile wheels, which are easy to move. Also, it can be made a stationary type as requested. First, we use a loader to feed the raw material to the trommel screen. We made two layers of screens, 6mm and 20mm respectively. After the screen, transport the material above 20mm as waste sand by belt conveyor. Then, the 6-20mm material will be input into the gold sluice box by height difference to catch the gold particles. This is the first part we can get gold from.<\/p>\n<p>Ensuite, nous utilisons un <a href=\"https:\/\/www.jxscmachine.com\/fr\/pompe-a-boues-pompe-a-gravier\/\">pompe \u00e0 boues<\/a> to pump the last material below 6mm onto the centrifugal concentrator. We designed the centrifugal concentrator and shaking table on the same platform with mobile wheels, which are easy to move and cost-saving. The centrifugal concentrator can concentrate gold particles of 0- 6 mm. The pulp under the screen enters the shaking table through the pipe; the shaking table can concentrate the gold powder between 0- 2 mm. Then the material on the screen flows to the sluice box through the pipe and is recycled again.<\/p>\n<p>Le crible \u00e0 trommel, le concentrateur centrifuge et l'appareil de mesure de l'\u00e9paisseur de la couche d'ozone sont des \u00e9l\u00e9ments essentiels \u00e0 la mise en \u0153uvre du projet. <a href=\"https:\/\/www.jxscmachine.com\/fr\/separateur-de-gravite\/table-a-secousses-pour-lor\/\">table \u00e0 secousses<\/a> peut changer de mod\u00e8le et augmenter la quantit\u00e9 en fonction des diff\u00e9rentes capacit\u00e9s.<\/p>\n<p>Les <a href=\"https:\/\/www.jxscmachine.com\/fr\/lavage-de-lor\/boite-a-glacons-pour-lor\/\">bo\u00eete \u00e0 vannes<\/a> peut \u00eatre con\u00e7u avec diff\u00e9rentes longueurs et largeurs comme 2m, 4m, 6m de long, 1m de large ou 0,5m de large.<\/p>\n<p>This washing plant is very suitable for recovering alluvial gold ore that doesn&#8217;t contain sticky clay. If the raw ore contains a lot of sticky clay, we recommend a <a href=\"https:\/\/www.jxscmachine.com\/fr\/lavage-de-lor\/trommel-a-or\/\">laveur \u00e0 tambour<\/a> instead of a trommel screen because it needs to wash the clay first.<\/p>\n<p>The capacity for this washing plant can be customized as per request, such as 10tph, 50tph,100tph, etc.<\/p>\n<p>&nbsp;<\/p>\n<h2>Optimizing Recovery with Sustainable Practices<\/h2>\n<p><a href=\"https:\/\/www.jxscmachine.com\/fr\/projet-de-minerai-epc\/lexploitation-de-lor-placerien\/\">Exploitation de l'or alluvial<\/a> balances operational efficiency with ecological responsibility.<strong> Key takeaways:<\/strong><\/p>\n<ul>\n<li><strong>Adaptability is critical:<\/strong> Match equipment (trommels, centrifuges) to deposit size and clay content<\/li>\n<li><strong>Gravity remains king:<\/strong> Multi-stage circuits (screening \u2192 sluicing \u2192 tabling) maximize gold capture<\/li>\n<li><strong>Compliance drives innovation:<\/strong> Modern plants replace hazardous amalgamation with closed-loop water recycling and mercury-free refining<\/li>\n<\/ul>\n<p><strong>Partner with Experts:<\/strong> As a leading mineral processing solutions provider, we deliver custom-designed wash plants (10\u2013500 TPH) with:<\/p>\n<ul>\n<li><strong>Modular mobility:<\/strong> Wheel-mounted or stationary configurations.<\/li>\n<li><strong>Precision recovery:<\/strong> Optimized workflows for complex ores (e.g., clay-rich deposits via trommel scrubbers).<\/li>\n<li><strong>Full-circle support:<\/strong> From ore testing to EPC project delivery.<\/li>\n<\/ul>\n<p>Ready to upgrade your operation? <a href=\"#blog-contact-form\">Contact our engineers<\/a> for a deposit-specific feasibility study today.<\/p>","protected":false},"excerpt":{"rendered":"<p>Abstract Gravity separation remains the cornerstone of alluvial gold extraction, achieving recovery rates exceeding 90% in large-scale operations. Modern methodologies include: Chain-bucket dredges&nbsp;for mid-to-large deposits Hydro-mechanical mining&nbsp;for riverbanks and terraces Compact manual\/mechanized systems for remote areas processing employ modular circuits combining trommel screens, sluices, jigs, and shaking tables, while China&#8217;s strict environmental regulations have phased &hellip; <a href=\"https:\/\/www.jxscmachine.com\/fr\/new\/alluvial-gold-mining-processing\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Extraction et traitement de l'or alluvial<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":21766,"parent":0,"menu_order":132,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-21765","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alluvial Gold Mining &amp; 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