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Choice of a Sorbent for Copper and Cobalt Sorption from Gold-Containing Heap Leaching Solutions
Metallurgist ( IF 0.9 ) Pub Date : 2024-03-12 , DOI: 10.1007/s11015-024-01638-0
E. S. Kanaly , B. N. Surimbaev , L. S. Bolotova , S. T. Shalgymbaev

In hydrometallurgical processing of oxidized gold-bearing ores, copper, cobalt, zinc, and other metals, along with gold, dissolve in sodium cyanide alkaline solutions forming metal cyanide complexes, which have a negative impact on the gold leaching process. One method for removing copper from cyanide solutions is sorption using anion exchange resins. This article discusses the choice of a sorbent for sorption of gold, copper and cobalt from production and barren gold-containing solutions. Sorption studies are conducted on production solutions obtained during heap leaching of gold from ore (gold 1.13-1.20 mg/liter; copper 60.8-63.2 mg/liter; cobalt 1.73-1.78 mg/liter; iron 0.1 mg/liter), and on barren solutions after gold extraction from production solutions using activated carbon (gold 0.19-0.26 mg/liter; copper 49.6-59.5 mg/liter; cobalt 1.61-1.83 mg/liter; iron < 0.1 mg/liter). Sorption studies are conducted using resins such as AM-2B, Purolite A-500 and AV-17-8. Research results show that sorption characteristics of the resins tested for sorption of metals (copper, cobalt) from production and barren solutions are similar. For sorption of copper and cobalt strongly basic resins AV-17-8 and Purolite A-500 demonstrate the best sorption characteristics. The mixed-base anion exchange resin AM-2B exhibits enhanced selectivity for gold.



中文翻译:

选择用于从含金堆浸溶液中吸附铜和钴的吸附剂

在氧化含金矿石的湿法冶金过程中,铜、钴、锌和其他金属与金一起溶解在氰化钠碱性溶液中,形成金属氰化物络合物,这对金浸出过程产生负面影响。从氰化物溶液中去除铜的一种方法是使用阴离子交换树脂吸附。本文讨论了用于从生产和贫含金溶液中吸附金、铜和钴的吸附剂的选择。对从矿石中堆浸金过程中获得的生产溶液(金 1.13-1.20 毫克/升;铜 60.8-63.2 毫克/升;钴 1.73-1.78 毫克/升;铁 0.1 毫克/升)和贫瘠土地进行吸附研究。使用活性炭从生产溶液中提取金后的溶液(金 0.19-0.26 毫克/升;铜 49.6-59.5 毫克/升;钴 1.61-1.83 毫克/升;铁 < 0.1 毫克/升)。使用 AM-2B、Purolite A-500 和 AV-17-8 等树脂进行吸附研究。研究结果表明,用于吸附生产溶液和贫瘠溶液中的金属(铜、钴)的树脂的吸附特性相似。对于铜和钴的吸附,强碱性树脂 AV-17-8 和 Purolite A-500 表现出最佳的吸附特性。混合基阴离子交换树脂 AM-2B 对金具有增强的选择性。

更新日期:2024-03-13
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