{"id":21636,"date":"2023-11-15T14:06:00","date_gmt":"2023-11-15T06:06:00","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=new&p=21636"},"modified":"2026-06-29T16:57:06","modified_gmt":"2026-06-29T08:57:06","slug":"factores-que-determinam-a-taxa-de-recuperacao-da-amalgama-de-ouro","status":"publish","type":"new","link":"https:\/\/www.jxscmachine.com\/pt\/new\/factors-determine-gold-amalgamation-recovery-rate\/","title":{"rendered":"Que factores determinam a taxa de recupera\u00e7\u00e3o da am\u00e1lgama de ouro?"},"content":{"rendered":"

Amalgama\u00e7\u00e3o de ouro<\/strong> is a traditional method of extracting gold by binding it with mercury to form an amalgam, which is then heated to isolate pure gold. While historically significant, this process presents concerns due to mercury’s toxicity and environmental risks. The recovery rate\u2014the efficiency of gold extraction via amalgamation\u2014is influenced by multiple factors, including gold particle size, mercury quality, slurry concentration, pH levels, and temperature. Modern mining increasingly favors safer alternatives like cyanide leaching, but understanding amalgamation’s mechanics remains relevant for legacy operations and regulatory contexts.<\/p>\n

O que \u00e9 a am\u00e1lgama de ouro?<\/h2>\n

Amalgama\u00e7\u00e3o de ouro<\/strong> is a method of extracting gold from its ores by mixing it with mercury. It is an ancient gold separation method. This process forms a am\u00e1lgama de ouro e merc\u00fario<\/a>A am\u00e1lgama \u00e9 aquecida para vaporizar o merc\u00fario, deixando o ouro para tr\u00e1s. A am\u00e1lgama \u00e9 ent\u00e3o aquecida para vaporizar o merc\u00fario, deixando para tr\u00e1s o ouro. Esta t\u00e9cnica tem sido historicamente utilizada na extra\u00e7\u00e3o de ouro, particularmente em \u00e1reas onde o ouro est\u00e1 finamente disseminado no min\u00e9rio e pode n\u00e3o ser facilmente recuper\u00e1vel por outros m\u00e9todos.<\/p>\n

 <\/p>\n

\"ouro\"<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

Taxa de recupera\u00e7\u00e3o de am\u00e1lgama de ouro<\/h2>\n

O taxa de recupera\u00e7\u00e3o de am\u00e1lgama de ouro<\/strong> refere-se \u00e0 percentagem de ouro que pode ser recuperada com sucesso atrav\u00e9s do processo de amalgama\u00e7\u00e3o. Mede a efici\u00eancia do m\u00e9todo de extra\u00e7\u00e3o de ouro que envolve a utiliza\u00e7\u00e3o de merc\u00fario para formar uma am\u00e1lgama de ouro e merc\u00fario.<\/p>\n

A taxa de recupera\u00e7\u00e3o \u00e9 calculada comparando a quantidade de ouro recuperada atrav\u00e9s da amalgama\u00e7\u00e3o com a quantidade total de ouro presente no min\u00e9rio ou concentrado. \u00c9 expressa em percentagem e fornece informa\u00e7\u00f5es sobre a efic\u00e1cia do processo de amalgama\u00e7\u00e3o na captura e extra\u00e7\u00e3o de ouro da mat\u00e9ria-prima.<\/p>\n

Uma taxa de recupera\u00e7\u00e3o mais elevada indica que uma maior propor\u00e7\u00e3o de ouro no min\u00e9rio \u00e9 amalgamada e recuperada com sucesso. Uma taxa de recupera\u00e7\u00e3o mais baixa sugere que uma quantidade significativa de ouro n\u00e3o \u00e9 recuperada ou \u00e9 perdida durante o processo. As pr\u00e1ticas mineiras modernas t\u00eam como objetivo maximizar as taxas de recupera\u00e7\u00e3o, minimizando os riscos ambientais e para a sa\u00fade associados \u00e0 utiliza\u00e7\u00e3o de merc\u00fario na amalgama\u00e7\u00e3o do ouro.<\/p>\n

 <\/p>\n

Factores que afectam a taxa de recupera\u00e7\u00e3o da am\u00e1lgama de ouro<\/h2>\n

A taxa de recupera\u00e7\u00e3o do ouro durante a am\u00e1lgama de merc\u00fario depende de the particle size and shape of natural gold, the color of gold particles, the quality of mercury, the mercury amalgamation temperature, the slurry concentration, the mercury amalgamation method, and equipment factors, etc.<\/strong><\/p>\n

1. Gold Particle Size and Shape<\/h3>\n

The particle size, shape, and monomer dissociation degree of gold are mainly related to the grinding operation. In particular, the degree of monomer dissociation has a more significant impact. Increasing the grinding fineness can improve the recovery rate of mercury amalgamation operations. Gold particles suitable for mercury amalgamation generally are 0.2-0.3 mm. The lower limit of the mercury amalgamation plate particle size in the grinding cycle is 0.015 mm, but the fine gold particles are lost with the slurry.<\/p>\n

2. A finura dos gr\u00e3os de ouro<\/h3>\n

A cor do ouro de aluvi\u00e3o \u00e9 mais elevada do que a do veio de ouro<\/a>, and the color of gold in the oxidation zone is higher than that of primary ore. Gold with a high color is prone to amalgamation with mercury. If the surface of gold particles is contaminated, their amalgamation ability will significantly reduce.<\/p>\n

3. M\u00e9todo de am\u00e1lgama de merc\u00fario<\/h3>\n

A am\u00e1lgama de merc\u00fario divide-se em am\u00e1lgama interna de merc\u00fario e am\u00e1lgama externa de merc\u00fario.<\/strong> External mercury amalgamation is mixing mercury to extract gold outside the crushing chamber. External mercury amalgamation is commonly used in China with fixed and vibrating mercury amalgamation plates. Internal mercury amalgamation is performed outside the crushing chamber. During the grinding operation cycle, mercury amalgamation is used to extract gold. Gold mines in South Africa and the United States often use mercury amalgamation in ramming machines. Small and medium-sized gold mines in the Soviet Union often use disc rollers. In China, mercury amalgamation cylinders are often used. The efficiency of internal mercury amalgamation is higher than that of external mercury amalgamation, and the quality of mercury gold is good. The concentration of external amalgamated mercury slurry should not be too high to form a loose, thin slurry flow, and the flow rate should not be too high to allow gold particles to settle onto the mercury plate. The concentration of internal mercury slurry should be 30-50%, and the mercury should be suspended.<\/p>\n

 <\/p>\n

\"ouro\"<\/a><\/p>\n

 <\/p>\n

4. pH do chorume<\/h3>\n

O pH da lama tem uma grande influ\u00eancia no efeito de am\u00e1lgama do merc\u00fario. O efeito de amalgama\u00e7\u00e3o do merc\u00fario \u00e9 bom em meios \u00e1cidos e solu\u00e7\u00f5es de cianeto, mas quando h\u00e1 muito lodo, o meio \u00e1cido n\u00e3o consegue aglomerar o lodo e este contamina a superf\u00edcie das part\u00edculas de ouro, afectando o efeito de amalgama\u00e7\u00e3o do merc\u00fario. Quando o merc\u00fario \u00e9 misturado num meio alcalino, como a utiliza\u00e7\u00e3o de cal como regulador para precipitar sais sol\u00faveis e eliminar os efeitos adversos da qualidade do \u00f3leo, o impacto da mistura de merc\u00fario \u00e9 melhor quando PH=8-8,5.<\/p>\n

5. Massa de merc\u00fario<\/h3>\n

A qualidade do merc\u00fario influencia grandemente o efeito da am\u00e1lgama de merc\u00fario. O merc\u00fario puro n\u00e3o \u00e9 bom para molhar o ouro. O merc\u00fario que cont\u00e9m uma pequena quantidade de ouro, prata e metais de base pode reduzir a tens\u00e3o superficial do merc\u00fario e melhorar o efeito molhante. O \u00f3leo de motor, outras mat\u00e9rias org\u00e2nicas e lama fina contaminam a superf\u00edcie das part\u00edculas de ouro. O min\u00e9rio de sulfureto, o talco, a grafite e o arsenieto no min\u00e9rio aderem facilmente \u00e0 superf\u00edcie do merc\u00fario, o que tamb\u00e9m afecta a capacidade de molhagem do merc\u00fario para o ouro.<\/p>\n

When mixing mercury, add an appropriate amount of mercury. Too much will reduce the elasticity and consistency of the mercury paste, causing the amalgam to be lost with the slurry. Insufficient addition of mercury makes the mercury paste hard and loses its elasticity, reducing its gold-capturing performance. After the mercury board is put into production, the initial mercury coating amount is 15-30 grams\/cubic meter, and mercury is added after 6-12 hours. The amount of mercury added is 2-5 times the gold content of the ore, and the consumption of mercury is usually 3-8 g\/ton of ore.<\/p>\n

 <\/p>\n

\"Taxa<\/a><\/p>\n

6. Temperatura de fus\u00e3o<\/h3>\n

In addition, temperature also affects the effect of mercury amalgamation. If the temperature is too low, it will increase the viscosity of mercury and affect the mercury amalgamation effect. If the temperature is too high, it will increase the fluidity of mercury, causing some of it to be lost. Therefore, the mercury amalgamation index is prone to seasonal changes. The mercury amalgamation temperature should generally be greater than 15 degrees. Adding mercury and adjusting the slurry concentration are used to eliminate the influence of temperature.<\/p>\n

 <\/p>\n

Conclusion: Balancing Efficiency and Sustainability<\/h2>\n

While amalgamation can achieve high recovery rates under optimal conditions, its reliance on toxic mercury demands caution. Modern alternatives such as cyanide leaching and gravity separation now dominate the industry, prioritizing environmental and worker safety. For operations still employing amalgamation, meticulous control of the above factors\u2014particle size, gold purity, method selection, slurry chemistry, mercury quality, and temperature\u2014is essential to maximize yields and minimize harm.<\/p>","protected":false},"excerpt":{"rendered":"

Gold amalgamation is a traditional method of extracting gold by binding it with mercury to form an amalgam, which is then heated to isolate pure gold. While historically significant, this process presents concerns due to mercury’s toxicity and environmental risks. The recovery rate\u2014the efficiency of gold extraction via amalgamation\u2014is influenced by multiple factors, including gold … Continue reading Que factores determinam a taxa de recupera\u00e7\u00e3o da am\u00e1lgama de ouro?<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":21637,"parent":0,"menu_order":136,"comment_status":"closed","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-21636","new","type-new","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nWhat Factors Determine Gold Amalgamation Recovery Rate? - JXSC Machine<\/title>\n<meta name=\"description\" content=\"Gold amalgamation recovery rate is influenced by gold particle size, mercury quality, slurry concentration, pH levels, and temperature.\" \/>\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\/factores-que-determinam-a-taxa-de-recuperacao-da-amalgama-de-ouro\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Factors Determine Gold Amalgamation Recovery Rate? 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