| 失效双氧水催化剂中钯的浸出-沉淀富集效率研究 |
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| 引用本文： | 童伟锋,赵家春,吴晓峰,吴跃东,王亚雄.失效双氧水催化剂中钯的浸出-沉淀富集效率研究[J].贵金属,2022,43(S1):84-88. |
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| 作者姓名： | 童伟锋 赵家春 吴晓峰 吴跃东 王亚雄 |
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| 作者单位： | 昆明贵金属研究所,贵研铂业股份有限公司 稀贵金属综合利用新技术国家重点试验室,昆明 650106 |
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| 基金项目： | 云南省重大科技专项(202002AB080001,2018ZE001) |
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| 摘 要： | 研究了从失效双氧水催化剂中富集钯的工艺,采用“焙烧浸出-硫化沉钯”的工艺实现了钯的高效富集。重点考察在浸出中硫酸浓度、浸出温度、浸出时间、盐酸浓度、NaClO3用量对富集倍数的影响。研究了富集钯的最佳工艺条件,结果表明,钯平均富集12.09倍,钯的平均回收率为99.55%。
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| 关 键 词： | 失效催化剂 钯 氯化浸出 硫化沉淀 富集倍数 |
| 收稿时间： | 2020/10/19 0:00:00 |
Study on the leaching-precipitation enrichment efficiency of palladium in spent hydrogen peroxide catalyst |
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| TONG Wei-feng,ZHAO Jia-chun,WU Xiao-feng,WU Yue-dong,WANG Ya-xiong.Study on the leaching-precipitation enrichment efficiency of palladium in spent hydrogen peroxide catalyst[J].Precious Metals,2022,43(S1):84-88. |
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| Authors: | TONG Wei-feng ZHAO Jia-chun WU Xiao-feng WU Yue-dong WANG Ya-xiong |
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| Affiliation: | Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming 650106, China |
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| Abstract: | The process to enrich palladium from the spent hydrogen peroxide catalysts were studied. The process of "roasting-leaching and palladium sulfide precipitation" is used to achieve high-efficiency enrichment of palladium, focusing on the dosage influence caused by sulfuric acid concentration, leaching temperature, leaching time, hydrochloric acid concentration, and NaClO3 during leaching. The optimal process conditions for the enrichment of palladium were obtained. The results showed that the average enrichment ratio of palladium was 12.09, and the recovery rate of palladium was 99.55%. |
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| Keywords: | spent catalysts Pd chloridizing leaching Na2S precipitation concentration factor |
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