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Aiming at the complex process, severe co-precipitation of impurities, and environmental pollution problems existing in the recovery process of platinum and palladium from silver anode slime, extracting platinum and palladium from electrolytic silver anode slime by selective nitric acid leaching-complexation directional precipitation was studied. The test results show that under the optimized conditions of nitric acid concentration of 40%, temperature of 90 ℃, and liquid volume to solid mass ratio of 4∶1, almost all impurities such as silver, copper, and bismuth are completely leached, and the leaching rates of platinum and palladium reach 89.97% and 99.17%, respectively. Subsequently, under conditions of temperature of 70 ℃, pH=0.5, and dimethylglyoxime addition amount of 2.5 times the theoretical addition amount, directional precipitation is carried out, and the precipitation rates of platinum and palladium are 88.45% and 99.78%, respectively, achieving high selectivity enrichment of platinum and palladium and effectively inhibiting the co-precipitation of impurities such as silver and copper. The expanded test results show that the direct recovery rates of platinum and palladium by this process are 78.32% and 99.05%, respectively, and a concentrate with platinum and palladium contents of 11.43% and 28.56% can be obtained. This method achieves efficient enrichment of platinum and palladium through the high selectivity interaction of the complexing agent, and there is no wastewater discharge, providing a new strategy for the clean and efficient recovery of platinum and palladium resources from silver anode slime.

, authors=Bin YUAN, Niangao TENG, Bo YANG, authorsList=Bin YUAN, Niangao TENG, Bo YANG, authorCompany=null, correspAuthors=Bo YANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1317114942386459009, articleId=1317114940243169662, tenantId=1146029695717560320, journalId=1146120122248306696, language=CN, title=硝酸选择性浸出—络合沉淀法从银阳极泥中回收铂与钯, columnId=1152626641328501305, journalTitle=湿法冶金, columnName=试验研究, runingTitle=null, highlight=null, articleAbstract=

针对银阳极泥中铂、钯资源回收过程中存在的流程复杂、杂质共沉淀严重及环境污染等问题,研究了采用硝酸选择性浸出—络合定向沉淀法从电解银阳极泥中提取铂、钯。试验结果表明:在硝酸浓度40%、温度90 ℃、液固体积质量比4∶1的优化条件下,银、铜、铋等杂质可几乎完全浸出,铂、钯浸出率分别达89.97%和99.17%;之后,在温度70 ℃、pH=0.5、丁二酮肟添加量为理论添加量2.5倍条件下进行定向沉淀,铂、钯沉淀率分别为88.45%和99.78%,实现了铂、钯的高选择性富集,并有效抑制了银、铜等杂质的共沉淀。扩大试验结果表明,该工艺的铂、钯直收率分别为78.32%和99.05%,并能获得铂、钯品位分别为11.43%和28.56%的精矿。该方法通过络合剂的高选择性结合作用,实现了铂、钯的高效富集,且无废水排放,为银阳极泥中铂钯资源的清洁、高效回收提供了一种新策略。

, authors=袁彬, 滕年高, 杨博, authorsList=袁彬, 滕年高, 杨博, authorCompany=null, correspAuthors=杨博, authorNote=

袁彬(1989—),男,本科,工程师,主要研究方向为稀贵金属冶金。

, correspAuthorsNote=
杨博(1999—),男,硕士研究生,助理工程师,主要研究方向为湿法冶金。E-mail:。
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袁彬(1989—),男,本科,工程师,主要研究方向为稀贵金属冶金。

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袁彬(1989—),男,本科,工程师,主要研究方向为稀贵金属冶金。

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硝酸选择性浸出—络合沉淀法从银阳极泥中回收铂与钯
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袁彬 , 滕年高 , 杨博
湿法冶金 | 试验研究 2026,45(5): 668-675
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湿法冶金 |试验研究 2026 , 45 (5) : 668 -675
硝酸选择性浸出—络合沉淀法从银阳极泥中回收铂与钯
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袁彬, 滕年高, 杨博
作者信息
  • 深圳市中金岭南有色金属股份有限公司 丹霞冶炼厂,广东 韶关 512325
通讯作者:
杨博(1999—),男,硕士研究生,助理工程师,主要研究方向为湿法冶金。E-mail:。
作者简介:

袁彬(1989—),男,本科,工程师,主要研究方向为稀贵金属冶金。

Recovery of Platinum and Palladium from Silver Anode Slime by Nitric Acid Selective Leaching-Complexation Precipitation Method
Bin YUAN, Niangao TENG, Bo YANG
Affiliations
  • Danxia Smelter, Shenzhen Zhongjin Lingnan Nonfemet Co., Ltd., Shaoguan 512325, China
出版时间: 2026-10-20 doi: 10.13355/j.cnki.sfyj.2026.05.006
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针对银阳极泥中铂、钯资源回收过程中存在的流程复杂、杂质共沉淀严重及环境污染等问题,研究了采用硝酸选择性浸出—络合定向沉淀法从电解银阳极泥中提取铂、钯。试验结果表明:在硝酸浓度40%、温度90 ℃、液固体积质量比4∶1的优化条件下,银、铜、铋等杂质可几乎完全浸出,铂、钯浸出率分别达89.97%和99.17%;之后,在温度70 ℃、pH=0.5、丁二酮肟添加量为理论添加量2.5倍条件下进行定向沉淀,铂、钯沉淀率分别为88.45%和99.78%,实现了铂、钯的高选择性富集,并有效抑制了银、铜等杂质的共沉淀。扩大试验结果表明,该工艺的铂、钯直收率分别为78.32%和99.05%,并能获得铂、钯品位分别为11.43%和28.56%的精矿。该方法通过络合剂的高选择性结合作用,实现了铂、钯的高效富集,且无废水排放,为银阳极泥中铂钯资源的清洁、高效回收提供了一种新策略。

电解银阳极泥  /  硝酸  /  浸出  /  络合沉淀  /  铂  /  钯  /  回收

Aiming at the complex process, severe co-precipitation of impurities, and environmental pollution problems existing in the recovery process of platinum and palladium from silver anode slime, extracting platinum and palladium from electrolytic silver anode slime by selective nitric acid leaching-complexation directional precipitation was studied. The test results show that under the optimized conditions of nitric acid concentration of 40%, temperature of 90 ℃, and liquid volume to solid mass ratio of 4∶1, almost all impurities such as silver, copper, and bismuth are completely leached, and the leaching rates of platinum and palladium reach 89.97% and 99.17%, respectively. Subsequently, under conditions of temperature of 70 ℃, pH=0.5, and dimethylglyoxime addition amount of 2.5 times the theoretical addition amount, directional precipitation is carried out, and the precipitation rates of platinum and palladium are 88.45% and 99.78%, respectively, achieving high selectivity enrichment of platinum and palladium and effectively inhibiting the co-precipitation of impurities such as silver and copper. The expanded test results show that the direct recovery rates of platinum and palladium by this process are 78.32% and 99.05%, respectively, and a concentrate with platinum and palladium contents of 11.43% and 28.56% can be obtained. This method achieves efficient enrichment of platinum and palladium through the high selectivity interaction of the complexing agent, and there is no wastewater discharge, providing a new strategy for the clean and efficient recovery of platinum and palladium resources from silver anode slime.

electrolytic silver anode slime  /  nitric acid  /  leaching  /  complex precipitation  /  platinum  /  palladium  /  recovery
袁彬, 滕年高, 杨博. 硝酸选择性浸出—络合沉淀法从银阳极泥中回收铂与钯. 湿法冶金, 2026 , 45 (5) : 668 -675 . DOI: 10.13355/j.cnki.sfyj.2026.05.006
Bin YUAN, Niangao TENG, Bo YANG. Recovery of Platinum and Palladium from Silver Anode Slime by Nitric Acid Selective Leaching-Complexation Precipitation Method[J]. Hydrometallurgy of China, 2026 , 45 (5) : 668 -675 . DOI: 10.13355/j.cnki.sfyj.2026.05.006

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doi: 10.13355/j.cnki.sfyj.2026.05.006
  • 接收时间:2026-04-15
  • 首发时间:2026-10-14
  • 出版时间:2026-10-20
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  • 收稿日期:2026-04-15
  • 修回日期:2026-05-23
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    深圳市中金岭南有色金属股份有限公司 丹霞冶炼厂,广东 韶关 512325

通讯作者:

杨博(1999—),男,硕士研究生,助理工程师,主要研究方向为湿法冶金。E-mail:。
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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