{"id":9274,"date":"2019-11-08T17:36:19","date_gmt":"2019-11-08T09:36:19","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=new&#038;p=9274"},"modified":"2026-05-19T15:46:39","modified_gmt":"2026-05-19T07:46:39","slug":"processo-de-retirada-de-rejeitos-de-minas","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/pt\/new\/mine-tailings-retreatment-process\/","title":{"rendered":"Processo de recupera\u00e7\u00e3o de rejeitos de minas"},"content":{"rendered":"<p><strong>Rejeitos de minas<\/strong>, the residual materials left after mineral extraction, represent both an environmental challenge and an untapped resource. As the mining industry shifts toward sustainable practices, <strong>tailings retreatment has emerged as a critical solution<\/strong>\u2014transforming waste into value while reducing ecological risks. Whether through reprocessing for residual minerals, advanced dewatering techniques, or innovative backfilling methods, tailings management now plays a pivotal role in responsible resource recovery. <em><strong>In this article, we explore the latest technologies and strategies for tailings retreatment, offering insights into how the mining sector can turn legacy waste into economic and environmental opportunities.<\/strong><\/em><\/p>\n<h2>What Are Mine Tailings?<\/h2>\n<p>Mine tailings are waste materials left after extracting valuable minerals from ore. Unlike overburden or waste rock, tailings consist of finely ground particles and residues from beneficiation processes. They vary in composition depending on the ore type, beneficiation method, and particle size.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-9295\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/mine-tailing.jpg\" alt=\"rejeitos de minas\" width=\"800\" height=\"450\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/mine-tailing.jpg 800w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/mine-tailing-300x169.jpg 300w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/mine-tailing-768x432.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><strong>Tailings can be classified into several categories:<\/strong><\/p>\n<ul>\n<li>Hand-picking tailings<\/li>\n<li>Gravity separation tailings<\/li>\n<li>Magnetic separation tailings<\/li>\n<li>Flotation tailings<\/li>\n<li>Chemical beneficiation tailings<\/li>\n<li>Electrification tailings<\/li>\n<\/ul>\n<p><strong>Why Should We Re-treat Tailings?<\/strong><br \/>\nUsually, the ore tailings are stored in the tailings dam. The remaining toxic chemicals, wastewater, and heavy metal ions in the beneficiation process will not only cause pollution and ecological damage to the surrounding environment but also increase the potential safety hazard of the tailings dam, may induce landslides, mudslides, tailings dam breaks, and other accidents, so tailings treatment has been highly valued. Retreating tailings mitigates these risks while recovering valuable minerals, promoting sustainable mining practices.<\/p>\n<p>&nbsp;<\/p>\n<h2>Key Tailings Retreatment Methods<\/h2>\n<p>At present, tailings treatment has three main directions: tailings re-concentration, tailings dewatering, and tailings filling the mined-out areas. Below, we will explain these three parts separately.<\/p>\n<h3>1. Tailings re-concentration: Extracting Hidden Value<\/h3>\n<p>Although the content of useful components in tailings is relatively low, the use of advanced technology and a reasonable process for re-treating tailings can also recover these components to a greater extent, thereby fully recycling resources and reducing waste. The final production of tailings will alleviate the pressure on the environment.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-9290\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/tailings-retreating.jpg\" alt=\"retirada de rejeitos\" width=\"800\" height=\"450\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/tailings-retreating.jpg 800w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/tailings-retreating-300x169.jpg 300w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/tailings-retreating-768x432.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><strong>Processo de flota\u00e7\u00e3o<\/strong><br \/>\nUsing the flotation process to treat tailings containing minerals such as colemanite, zinc oxide, and apatite. Due to the development of new chemicals and new processes, some tailings with relatively simple processes, especially some old tailings, can recycle concentrate product by the flotation process.<\/p>\n<p><strong>Novo processo de separa\u00e7\u00e3o por gravidade<\/strong><br \/>\nNew gravity separation equipment can recover fine-grained minerals from tailings. Many traditional <a href=\"https:\/\/www.jxscmachine.com\/pt\/categoria\/separador-de-gravidade\/\">equipamento de separa\u00e7\u00e3o por gravidade<\/a> can separate fine-grained and ultra-fine tailings after being invented and perfected, such as vertical centrifugal concentrators, composite gold shakers, compound centrifugal concentrators, and so on.<\/p>\n<p><strong>Tratamento microbiano e tecnologia de lixivia\u00e7\u00e3o<\/strong><br \/>\nThis technology mainly uses the biochemical action of microorganisms to improve the tailings&#8217; properties, and extracts harmful metal ions in tailings by means of microbial leaching or microbial mineralization to avoid environmental pollution.<\/p>\n<h3>2. Tailings Dewatering Process: Enhancing Safety &amp; Efficiency<\/h3>\n<p>In the mineral beneficiation stage, the slurry often contains much water. The high water content of the tailings is likely to lead to a tailing dam accident. Therefore, in the concentrating plant, tailings concentration and dehydration are also important parts.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-9285\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/pressure-filter-for-tailings.jpg\" alt=\"filtro de press\u00e3o para rejeitos\" width=\"800\" height=\"450\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/pressure-filter-for-tailings.jpg 800w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/pressure-filter-for-tailings-300x169.jpg 300w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2019\/11\/pressure-filter-for-tailings-768x432.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><br \/>\n<strong>Hidrociclone<\/strong><br \/>\nAs a kind of equipment for solid-liquid separation using centrifugal force, the hydrocyclone has the characteristics of a small area and high underflow concentration. This kind of concentration process mainly uses a hydrocyclone and a thickener to form a series of closed circuits to obtain high concentrate product.<br \/>\n<a href=\"https:\/\/www.jxscmachine.com\/pt\/classificacao\/hidrocilona\/\">Comprar hidrociclone<\/a><\/p>\n<p><strong>Filtro prensa<\/strong><br \/>\nO filtro prensa \u00e9 tamb\u00e9m utilizado no tratamento de rejeitos de minas de ouro. O m\u00e9todo tem como caracter\u00edsticas o baixo teor de \u00e1gua do bolo de filtra\u00e7\u00e3o e o retorno do filtrado. No entanto, devido \u00e0 baixa capacidade de processamento de uma \u00fanica m\u00e1quina, \u00e9 dif\u00edcil escalar a cauda do beneficiamento em grande escala.<br \/>\n<a href=\"https:\/\/www.jxscmachine.com\/pt\/maquina-de-desidratacao\/filtro-prensa\/\">Comprar filtro prensa<\/a><\/p>\n<p><a href=\"https:\/\/www.jxscmachine.com\/pt\/solucoes\/fabrica-de-rejeitos-secos\/\"><strong>Descarga a seco de rejeitos<\/strong><\/a><br \/>\nIt is a new process using a dewatering-type cyclone, high-frequency dewatering screen, and high-efficiency deep cone thickener. It can reduce the water content in tailings to less than 15%, and save costs, which can effectively avoid environmental pollution.<\/p>\n<h3>3. Backfilling Mined-Out Areas: Sustainable Waste Disposal<\/h3>\n<p>O enchimento da barragem de rejeitos destina-se a repor os res\u00edduos de rejeitos na \u00e1rea minada para proteger o terreno e reduzir o custo da barragem de rejeitos.<\/p>\n<p><strong>Tecnologia de enchimento de cimento de areia de rejeitos<\/strong><br \/>\nThe full tailings cement filling is mixed with cement, ash, etc., to form a filling aggregate with a hardness of 1~2 MPa, and the filling slurry is fed into the filling zone by the pipeline self-flow to achieve the purpose of filling the goaf.<\/p>\n<p><strong>Tecnologia de enchimento de areia de consolida\u00e7\u00e3o de \u00e1gua<\/strong><br \/>\nHigh-water consolidation full tail sand filling is similar to full tail sand cementing, except that high-water materials are used as cementitious materials rather than cement. This method uses alumina, sulphoaluminate-based material, and agglomerate, quicklime, and coagulant-based material, which are separately pulped and mixed before filling, and have a fast setting speed.<\/p>\n<p>&nbsp;<\/p>\n<h2>Conclus\u00e3o<\/h2>\n<p>Tailings retreatment is no longer just a compliance obligation\u2014it&#8217;s a strategic imperative for the future of mining. By adopting <strong>re-concentration, dewatering, or backfilling technologies,<\/strong> operators can mitigate environmental liabilities, unlock residual value, and align with circular economy principles. However, success hinges on selecting the right method for specific tailings profiles and site conditions. Collaborating with experts and leveraging innovative equipment will be key to optimizing these processes. As the industry continues to evolve, tailings retreatment stands as a testament to how sustainability and efficiency can go hand in hand, turning historical waste into tomorrow&#8217;s resource.<\/p>","protected":false},"excerpt":{"rendered":"<p>Mine tailings, the residual materials left after mineral extraction, represent both an environmental challenge and an untapped resource. As the mining industry shifts toward sustainable practices, tailings retreatment has emerged as a critical solution\u2014transforming waste into value while reducing ecological risks. Whether through reprocessing for residual minerals, advanced dewatering techniques, or innovative backfilling methods, tailings &hellip; <a href=\"https:\/\/www.jxscmachine.com\/pt\/new\/mine-tailings-retreatment-process\/\" class=\"more-link\">Continuar a ler <span class=\"screen-reader-text\">Processo de recupera\u00e7\u00e3o de rejeitos de minas<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":9275,"parent":0,"menu_order":271,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-9274","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mine Tailings Retreatment Process - JXSC Machine<\/title>\n<meta name=\"description\" content=\"This article explores the technologies and strategies for tailings retreatment and how to turn waste into economic and environmental.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jxscmachine.com\/pt\/novo\/processo-de-retirada-de-rejeitos-de-minas\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mine Tailings Retreatment Process - 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