{"id":20738,"date":"2023-04-18T10:36:28","date_gmt":"2023-04-18T02:36:28","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=new&#038;p=20738"},"modified":"2026-09-03T14:32:08","modified_gmt":"2026-09-03T06:32:08","slug":"processo-de-lixiviacao-em-pilha-de-minerio-de-ouro","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/pt\/new\/gold-ore-heap-leaching-process\/","title":{"rendered":"Processo de lixivia\u00e7\u00e3o em pilha de min\u00e9rio de ouro"},"content":{"rendered":"<p><strong>Gold ore heap leaching<\/strong> is a widely used <a href=\"https:\/\/www.jxscmachine.com\/pt\/novo\/processo-de-extracao-de-ouro\/\">processo de extra\u00e7\u00e3o de ouro<\/a> for low-grade and suitably permeable gold ores. The basic heap leaching process involves crushing and preparing the ore, stacking it on a properly designed and lined leach pad, distributing a suitable leaching solution over the heap, and collecting the gold-bearing pregnant solution at the bottom for subsequent recovery. Compared with conventional gold processing methods, heap leaching generally requires less equipment and lower energy consumption, making it an economical option for certain low-grade gold deposits. However,<strong> the performance of gold ore heap leaching depends strongly on ore mineralogy, particle size, permeability, cyanide and oxygen conditions, solution distribution, drainage, and leaching temperature.<\/strong> Therefore, proper ore preparation, heap construction, irrigation, solution collection, and process control are essential for improving gold recovery and maintaining stable heap leaching operation.<\/p>\n<p>&nbsp;<\/p>\n<h2>What Is Gold Ore Heap Leaching?<\/h2>\n<p><a href=\"https:\/\/www.jxscmachine.com\/pt\/projeto-de-minerio-epc\/lixiviacao-em-pilha\/\">Lixivia\u00e7\u00e3o em pilha<\/a> is a process in which a prepared ore heap is irrigated with a suitable leaching solution. The solution passes through the ore under gravity, dissolving valuable components and carrying them into the collection system at the bottom of the heap.<\/p>\n<p>Depending on the characteristics of the ore and the storage method, heap leaching can generally be classified as:<\/p>\n<ul>\n<li><strong>Ore heap leaching:<\/strong>&nbsp;Used for crushed and prepared ore with sufficient permeability and suitable mineralogy.<\/li>\n<li><strong>Waste-rock heap leaching:<\/strong>&nbsp;Applied to low-grade waste or marginal material containing recoverable valuable metals.<\/li>\n<li><strong>Surface heap leaching:<\/strong>&nbsp;The ore is stacked on a prepared, lined surface and irrigated from above.<\/li>\n<li><strong>Permanent heap leaching:<\/strong>&nbsp;Ore is placed in a long-term leach pad or permanent storage area rather than being removed after each leaching cycle.<\/li>\n<\/ul>\n<p>O m\u00e9todo de lixivia\u00e7\u00e3o em pilha \u00e9 utilizado principalmente na minera\u00e7\u00e3o de min\u00e9rio de cobre, min\u00e9rio de ur\u00e2nio, min\u00e9rio de ouro e <a href=\"https:\/\/www.jxscmachine.com\/pt\/solucoes\/processamento-de-prata\/\">min\u00e9rio de prata<\/a>bem como o tratamento de esc\u00f3rias de fundi\u00e7\u00e3o e de rejeitos de instala\u00e7\u00f5es de tratamento que contenham ingredientes \u00fateis.<\/p>\n<p>O m\u00e9todo de lixivia\u00e7\u00e3o em pilha tem um processo simples, menos equipamento e baixo consumo de energia, pelo que o investimento em infra-estruturas e os custos de produ\u00e7\u00e3o tamb\u00e9m s\u00e3o baixos. A sua principal desvantagem \u00e9 que a taxa de lixivia\u00e7\u00e3o dos componentes valiosos do min\u00e9rio \u00e9 baixa.<\/p>\n<p><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold-Ore-Heap-Leaching-Process.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-20739\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold-Ore-Heap-Leaching-Process.jpg\" alt=\"Processo de lixivia\u00e7\u00e3o em pilha de min\u00e9rio de ouro\" width=\"1200\" height=\"960\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold-Ore-Heap-Leaching-Process.jpg 1200w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold-Ore-Heap-Leaching-Process-768x614.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<h2>Precau\u00e7\u00f5es durante a extra\u00e7\u00e3o de ouro por lixivia\u00e7\u00e3o em pilha<\/h2>\n<p>&nbsp;<\/p>\n<h3>Melhoria do processo de lixivia\u00e7\u00e3o em pilha<\/h3>\n<p>&nbsp;<\/p>\n<h4>1. Aplica\u00e7\u00e3o correcta da tecnologia de granula\u00e7\u00e3o para melhorar a lixivia\u00e7\u00e3o do ouro<\/h4>\n<p>A pr\u00e1tica provou que os materiais de gr\u00e3o fino e os min\u00e9rios com um teor demasiado elevado de argila n\u00e3o s\u00e3o adequados para a lixivia\u00e7\u00e3o em pilha diretamente. O pr\u00e9-tratamento por granula\u00e7\u00e3o \u00e9 necess\u00e1rio para melhorar a permeabilidade da pilha de min\u00e9rio antes da lixivia\u00e7\u00e3o em pilha. O pr\u00e9-tratamento por granula\u00e7\u00e3o pode refor\u00e7ar consideravelmente a lixivia\u00e7\u00e3o de <a href=\"https:\/\/www.jxscmachine.com\/pt\/solucoes\/processamento-de-ouro\/\">ouro<\/a> and speed up the gold leaching rate. In most cases, it can also improve the gold leaching rate.<\/p>\n<p>A granula\u00e7\u00e3o utiliza normalmente cal e cimento como aglutinantes, mas a dosagem deve ser adequada.<\/p>\n<p>&nbsp;<\/p>\n<h4>2. Optimize Heap Construction and Leaching Methods<\/h4>\n<p>A produ\u00e7\u00e3o de lixivia\u00e7\u00e3o em pilha nos pa\u00edses estrangeiros n\u00e3o adopta o m\u00e9todo de uma pilha e uma descarga, mas um parque de armazenamento permanente. Normalmente, o parque de armazenamento \u00e9 selecionado num vale ou num local com uma grande \u00e1rea de fundo. \u00c9 adotado o m\u00e9todo de pulveriza\u00e7\u00e3o que consiste em construir pilhas alternadamente em camadas, divis\u00f3rias ou sec\u00e7\u00f5es. O m\u00e9todo de pulveriza\u00e7\u00e3o pode melhorar significativamente os benef\u00edcios econ\u00f3micos da empresa.<\/p>\n<p>A permeabilidade ao g\u00e1s da pilha de min\u00e9rio e a permeabilidade da solu\u00e7\u00e3o s\u00e3o os factores-chave para determinar o efeito da lixivia\u00e7\u00e3o em pilha.<\/p>\n<p>Em algumas minas dom\u00e9sticas, os tubos de bambu e as varas de madeira s\u00e3o enterrados na pilha, e estes objectos enterrados s\u00e3o retirados ap\u00f3s um per\u00edodo de lixivia\u00e7\u00e3o, de modo a que a pilha de min\u00e9rio se solte, e o aumento da permeabilidade \u00e9 prop\u00edcio \u00e0 lixivia\u00e7\u00e3o do min\u00e9rio de ouro. O Minist\u00e9rio da Geologia e dos Recursos Minerais Abrangente Ap\u00f3s um per\u00edodo de lixivia\u00e7\u00e3o da pilha de min\u00e9rio pelo instituto de investiga\u00e7\u00e3o, foram utilizadas explos\u00f5es de afrouxamento local nas partes inundadas, que tamb\u00e9m desempenharam um papel no afrouxamento da pilha de min\u00e9rio e na melhoria da permeabilidade; al\u00e9m disso, foram enterrados na pilha de min\u00e9rio tubos perfurados com muitos pequenos orif\u00edcios, Encha o tubo com uma solu\u00e7\u00e3o de cianeto, e a solu\u00e7\u00e3o de cianeto penetra no ambiente atrav\u00e9s de pequenos orif\u00edcios; dividir v\u00e1rias \u00e1reas no topo da pilha de min\u00e9rio de acordo com a penetra\u00e7\u00e3o r\u00e1pida, e fornecer a solu\u00e7\u00e3o de cianeto de acordo com a mesma \u00e1rea e volume, de modo que a solu\u00e7\u00e3o de cianeto na \u00e1rea com penetra\u00e7\u00e3o lenta O volume do lixiviado \u00e9 o mesmo que o da penetra\u00e7\u00e3o r\u00e1pida, para atingir o objetivo de infiltra\u00e7\u00e3o uniforme da pilha de min\u00e9rio.<\/p>\n<p>&nbsp;<\/p>\n<h4>3. Improve Pregnant Solution Collection and Drainage<\/h4>\n<p>Laying rich liquid collection pipes at the bottom of the ore heap can speed up the flow of the solution, eliminate ore accumulation water, increase the gold leaching speed, and prevent the ore heap from collapsing and causing landslides. In foreign heap leaching production, the bottom of the ore heap is almost entirely covered with liquid collecting pipes. In the domestic heap leaching production of Shanghang Zijinshan Gold Mine in Fujian and Kanggur Gold Mine in Xinjiang, etc., they have designed and laid liquid collecting pipes by themselves, and the effect is good. No rich liquid is found around the heap leaching field. The effluent solution was also quite clear. The Comprehensive Institute of the Ministry of Geology and Mineral Resources also adopted this measure during granulation and heap leaching and achieved obvious results.<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_26068\" aria-describedby=\"caption-attachment-26068\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold_Heap_Leaching_Optimization_Strategies.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-26068\" src=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold_Heap_Leaching_Optimization_Strategies.jpg\" alt=\"gold heap leaching optimization strategies\" width=\"1000\" height=\"558\" srcset=\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold_Heap_Leaching_Optimization_Strategies.jpg 1000w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold_Heap_Leaching_Optimization_Strategies-768x429.jpg 768w, https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/04\/Gold_Heap_Leaching_Optimization_Strategies-18x10.jpg 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><figcaption id=\"caption-attachment-26068\" class=\"wp-caption-text\">gold heap leaching optimization strategies<\/figcaption><\/figure>\n<h4>4. Control Leaching Temperature<\/h4>\n<p>O <a href=\"https:\/\/www.jxscmachine.com\/pt\/novo\/processo-de-extracao-de-ouro-por-cianeto\/\">rea\u00e7\u00e3o de cianeta\u00e7\u00e3o<\/a> deve ser efectuada a uma temperatura ligeiramente superior, pelo que, em climas frios, os principais problemas da lixivia\u00e7\u00e3o em pilha s\u00e3o a solu\u00e7\u00e3o e a temperatura. Quando a temperatura de lixivia\u00e7\u00e3o \u00e9 inferior a 10\u00b0C, a taxa de dissolu\u00e7\u00e3o do ouro cai drasticamente. Para ultrapassar esta defici\u00eancia e prolongar a \u00e9poca de lixivia\u00e7\u00e3o em pilha, a solu\u00e7\u00e3o \u00e9 aquecida primeiro e depois enviada para a pilha de min\u00e9rio.<\/p>\n<p>&nbsp;<\/p>\n<h4>5. Optimize Sprinkler and Drip Irrigation<\/h4>\n<p>Spraying and dripping are two different liquid distribution methods in the heap-leaching process. Both can produce a uniform liquid distribution effect, and uniform liquid distribution is one of the key factors in improving the gold leaching rate. The rotary swinging spray equipment widely used at home and abroad has the advantages of a large spraying area, uniform spraying liquid, no atomization, not easy to block, and convenient loading and unloading. The loss and wind entrainment loss are relatively large.<\/p>\n<p><strong>Drip leaching<\/strong> is suitable for heap leaching production under the natural conditions of drought, high temperature, strong wind, and water shortage in the Gobi desert area. Due to the unique advantages of drip leaching equipment, it has been widely used abroad. For example, 80% of heap leaching in the United States uses the drip method used to extract gold; with the success of the Saidu Gold Mine&#8217;s first application of drip equipment in my country, the trickle technology is also gradually popularized and applied in my country.<\/p>\n<p>O investimento em gotejamento \u00e9 40% inferior ao do equipamento de pulveriza\u00e7\u00e3o, a evapora\u00e7\u00e3o da solu\u00e7\u00e3o \u00e9 reduzida de 27% para 6%, o pico de lixivia\u00e7\u00e3o do ouro surge uma semana mais cedo e o tempo de lixivia\u00e7\u00e3o \u00e9 reduzido de 109d para 72d. A taxa de lixivia\u00e7\u00e3o aumenta de 70,5% para 78,6%.<\/p>\n<p>&nbsp;<\/p>\n<h3>Melhorar o ambiente de trabalho do agente e melhorar a lixivia\u00e7\u00e3o do min\u00e9rio de ouro<\/h3>\n<p>&nbsp;<\/p>\n<h4>Application of Leaching Aids<\/h4>\n<p>Oxygen plays an extremely important role in the cyanidation process, and the use of oxidants is an important technical measure to improve gold ore heap leaching. Batt studied the promotion of barium, strontium, and calcium peroxides on cyanide leaching, and found that they can release oxygen into the solution. For example, for some ores, when adding 1.5kg\/Ca0p, the heap leaching process can be sped up by 20 d.<\/p>\n<p>An appropriate amount of impregnating or wetting agent is added to the cyanide solution to facilitate the penetration of the cyanide solution and react with the wrapped gold. Pre-alkali treatment before heap leaching can reduce the influence of harmful gold ions on cyanide leaching, reduce the amount of cyanide, and maximize the gold leaching rate. Multi-stage leaching can obtain precious liquid with a gold content of up to 4ppm, significantly higher than single-stage heap leaching.<\/p>\n<p>&nbsp;<\/p>\n<h2>Conclus\u00e3o<\/h2>\n<p>Gold ore heap leaching is a relatively simple and cost-effective method for recovering gold from suitable low-grade ores, but achieving a high gold leaching rate requires careful control of the entire heap leaching process. Key factors include <strong>appropriate crushing and granulation, good ore heap permeability, uniform sprinkler or drip irrigation, efficient pregnant solution collection and drainage, suitable leaching temperature, and adequate oxygen and reagent conditions.<\/strong> In particular, improving solution distribution and maintaining good gas and liquid permeability can significantly enhance the contact between the leaching solution and gold-bearing minerals. For ores containing high clay content, fine particles, or other characteristics that restrict solution flow, pretreatment and process optimization are especially important. By selecting the appropriate heap construction method and leaching conditions according to the ore characteristics, mining operations can improve gold recovery, shorten the leaching cycle, reduce reagent and energy consumption, and achieve more stable and economical gold ore heap leaching results.<\/p>","protected":false},"excerpt":{"rendered":"<p>Gold ore heap leaching is a widely used gold extraction process for low-grade and suitably permeable gold ores. The basic heap leaching process involves crushing and preparing the ore, stacking it on a properly designed and lined leach pad, distributing a suitable leaching solution over the heap, and collecting the gold-bearing pregnant solution at the &hellip; <a href=\"https:\/\/www.jxscmachine.com\/pt\/new\/gold-ore-heap-leaching-process\/\" class=\"more-link\">Continuar a ler <span class=\"screen-reader-text\">Processo de lixivia\u00e7\u00e3o em pilha de min\u00e9rio de ouro<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":20739,"parent":0,"menu_order":155,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-20738","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gold Ore Heap Leaching Process - 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