{"id":899829,"date":"2026-11-03T20:02:11","date_gmt":"2026-11-03T20:02:11","guid":{"rendered":"https:\/\/www.metaflotech.com\/?p=899829"},"modified":"2026-11-03T20:03:11","modified_gmt":"2026-11-03T20:03:11","slug":"gold-cyanidation-optimizing-leaching-in-cil-and-cip-circuits","status":"publish","type":"post","link":"https:\/\/www.metaflotech.com\/pt\/gold-cyanidation-optimizing-leaching-in-cil-and-cip-circuits\/","title":{"rendered":"Cianeta\u00e7\u00e3o do ouro: otimiza\u00e7\u00e3o da lixivia\u00e7\u00e3o em tanques CIL e CIP"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-899830\" title=\"Large industrial process tank with external piping and access structures, illustrating equipment used in mineral processing facilities.\" src=\"https:\/\/www.metaflotech.com\/wp-content\/uploads\/2026\/11\/industrial-process-tank-gold-leaching.webp.webp\" alt=\"Industrial process tank with external piping and access structures, representing equipment used in gold leaching operations.\" width=\"768\" height=\"428\" srcset=\"https:\/\/www.metaflotech.com\/wp-content\/uploads\/2026\/11\/industrial-process-tank-gold-leaching.webp.webp 768w, https:\/\/www.metaflotech.com\/wp-content\/uploads\/2026\/11\/industrial-process-tank-gold-leaching.webp-300x167.webp 300w, https:\/\/www.metaflotech.com\/wp-content\/uploads\/2026\/11\/industrial-process-tank-gold-leaching.webp-18x10.webp 18w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Em circuitos de lixivia\u00e7\u00e3o por cianeta\u00e7\u00e3o, a recupera\u00e7\u00e3o metal\u00fargica e o consumo de reagentes dependem da resposta do min\u00e9rio e do controle das condi\u00e7\u00f5es operacionais. Varia\u00e7\u00f5es de pH, presen\u00e7a de metais que consomem cianeto e passiva\u00e7\u00e3o superficial podem afetar a cin\u00e9tica de extra\u00e7\u00e3o e o tempo de resid\u00eancia necess\u00e1rio.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Na MetaFLO, desenvolvemos o <\/span><a href=\"https:\/\/www.metaflotech.com\/pt\/produtos\/biopolimeros\/tecnologia-de-extracao\/\" target=\"_blank\" rel=\"noopener\"><b>ExtracTech<\/b><\/a><span style=\"font-weight: 400;\">um biopol\u00edmero l\u00edquido derivado de algas marinhas para aplica\u00e7\u00e3o na etapa de lixivia\u00e7\u00e3o do ouro. Sua dupla a\u00e7\u00e3o como alcalinizante e oxidante foi formulada para garantir a estabilidade do pH e reduzir a interfer\u00eancia de metais, resultando em uma melhor recupera\u00e7\u00e3o metal\u00fargica. O produto \u00e9 destinado a circuitos CIL e CIP e n\u00e3o \u00e9 recomendado para lixivia\u00e7\u00e3o em pilhas.<\/span><\/p>\n<h2><b>Controle de pH e consumo de reagentes<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">A faixa operacional de pH indicada para o processo \u00e9 de 10,5 a 11,5, com limite m\u00ednimo de 9,5. Quando utilizada como alcalinizante nessa etapa, a cal s\u00f3lida pode apresentar dissolu\u00e7\u00e3o lenta, contribuindo para varia\u00e7\u00f5es de pH na polpa. Seu preparo e manuseio tamb\u00e9m podem gerar poeira e incrusta\u00e7\u00f5es em tubula\u00e7\u00f5es e equipamentos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Conforme as caracter\u00edsticas do min\u00e9rio e as condi\u00e7\u00f5es da planta, o ExtracTech pode reduzir em at\u00e9 20 vezes o consumo de agentes alcalinizantes. Em opera\u00e7\u00f5es com maior demanda de alcalinidade, pode ser combinado com dosagens reduzidas de cal ou soda c\u00e1ustica.<\/span><\/p>\n<h2><b>Interfer\u00eancia de metais e consumo de cianeto<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Ars\u00eanio, ferro, cobre, n\u00edquel, zinco, chumbo e mangan\u00eas s\u00e3o metais pesados comumente associados ao ouro e que podem reagir com o cianeto, reduzindo sua disponibilidade para a dissolu\u00e7\u00e3o do metal. O ExtracTech atua sobre esses metais durante a lixivia\u00e7\u00e3o. Como consequ\u00eancia, seu uso pode reduzir em at\u00e9 35% o consumo de cianeto, conforme as condi\u00e7\u00f5es operacionais.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em uma mineradora na Costa Rica, o produto foi aplicado a um min\u00e9rio vulc\u00e2nico em dosagens entre 150 e 250 g\/t. O circuito convencional levava 96 horas para alcan\u00e7ar 51,8% de extra\u00e7\u00e3o. Com o ExtracTech, esse n\u00edvel foi atingido em 48 horas. A opera\u00e7\u00e3o tamb\u00e9m registrou aumento de 11,52% na recupera\u00e7\u00e3o total de ouro e redu\u00e7\u00e3o de 30% no consumo de cianeto.<\/span><\/p>\n<h2><b>Cin\u00e9tica de extra\u00e7\u00e3o e recupera\u00e7\u00e3o metal\u00fargica<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">A resposta \u00e0 aplica\u00e7\u00e3o depende da composi\u00e7\u00e3o do min\u00e9rio e dos par\u00e2metros do circuito. Em uma mineradora na Bahia, Brasil, o ExtracTech foi aplicado na dosagem de 250 g\/t de min\u00e9rio seco. Nas primeiras oito horas, a taxa de extra\u00e7\u00e3o aumentou 30% em rela\u00e7\u00e3o \u00e0 condi\u00e7\u00e3o de controle. Ao final de 24 horas, foi registrado um ganho de 16,96% na recupera\u00e7\u00e3o final de ouro.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os resultados da Bahia e da Costa Rica refletem condi\u00e7\u00f5es espec\u00edficas de cada opera\u00e7\u00e3o e demonstram respostas distintas: na Bahia, houve ganho na cin\u00e9tica de extra\u00e7\u00e3o nas primeiras oito horas e na recupera\u00e7\u00e3o ap\u00f3s 24 horas; na Costa Rica, houve redu\u00e7\u00e3o do tempo necess\u00e1rio para alcan\u00e7ar o n\u00edvel de extra\u00e7\u00e3o indicado, aumento da recupera\u00e7\u00e3o total e menor consumo de cianeto.<\/span><\/p>\n<h2><b>Aplica\u00e7\u00e3o em circuitos CIL e CIP<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">O ExtracTech \u00e9 dosado diretamente na polpa durante a lixivia\u00e7\u00e3o do ouro. Quando poss\u00edvel no circuito, deve ser adicionado na etapa de pr\u00e9-alcaliniza\u00e7\u00e3o, antes da adi\u00e7\u00e3o de cianeto. As dosagens apresentadas para as aplica\u00e7\u00f5es variam de 120 a 250 g\/t, conforme o min\u00e9rio e as condi\u00e7\u00f5es do processo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A integra\u00e7\u00e3o pode utilizar bombas dosadoras ou sistemas de inje\u00e7\u00e3o existentes, sem necessidade de novos tanques ou agitadores, nem de altera\u00e7\u00f5es de layout. A aplica\u00e7\u00e3o n\u00e3o exige investimento adicional em infraestrutura, segundo as condi\u00e7\u00f5es descritas para o produto.<\/span><\/p>\n<p class=\"translation-block\"><span style=\"font-weight: 400\">Na MetaFLO, desenvolvemos o ExtracTech para apoiar a <a href=\"https:\/\/www.metaflotech.com\/pt\/o-uso-de-biopolimeros-na-lixiviacao-de-ouro-afeta-a-adsorcao-em-carvao-ativado\/\" target=\"_blank\" rel=\"noopener\">otimiza\u00e7\u00e3o da cianeta\u00e7\u00e3o do ouro e da recupera\u00e7\u00e3o metal\u00fargica em circuitos CIL e CIP<\/a>. <\/span><b>Fale com um de nossos especialistas<\/b><span style=\"font-weight: 400\"> para discutir a aplica\u00e7\u00e3o da tecnologia em sua opera\u00e7\u00e3o e as caracter\u00edsticas espec\u00edficas do seu min\u00e9rio.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>In cyanide leaching circuits, metallurgical recovery and reagent consumption depend on ore characteristics and the control of operating conditions. Variations in pH, the presence of cyanide-consuming metals, and surface passivation can affect extraction kinetics and the required residence time. At MetaFLO, we developed ExtracTech, a liquid seaweed-derived biopolymer designed for use in the gold leaching&hellip;<\/p>","protected":false},"author":20,"featured_media":899830,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_joinchat":[],"footnotes":""},"categories":[23],"tags":[164,209,115],"class_list":["post-899829","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","tag-extractech","tag-gold-leaching","tag-mining"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Gold Cyanidation: Optimizing Leaching in CIL and CIP Circuits | MetaFLO<\/title>\n<meta name=\"description\" content=\"Discover how ExtracTech helps optimize gold cyanidation in CIL and CIP circuits, improving recovery, controlling pH and reducing reagent 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