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| 载体溶解法回收失效Pt/TiO2催化剂中的铂 |
| Recovery of platinum in spent Pt/TiO2 catalyst by carrier dissolution method |
| Received:December 22, 2020 |
| DOI： |
| 中文关键词: 有色金属冶金 铂钛催化剂 载体溶解法 混合酸 铂 回收 |
| 英文关键词: nonferrous metallurgy platinum-titanium catalyst carrier dissolution method mixed acid platinum recovery |
| 基金项目:云南省科技人才和平台计划(2018HB112)；云南省重大科技专项(2018ZE001)；固废资源化重点专项(2019YFC1907505) |
| Author Name | Affiliation | E-mail | | ZHAO Yu | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | 306736970@qq.com | | WU Xi-long | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | | | WANG Biao | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | | | WANG Huan | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | | | LI Yong | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | | | LIU Wen | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | | | YANG Shen-hong | Sino-Platinum Metals Rosources Yimen Co. Ltd., State Key Laboratory of Advanced Technologies forComprehensive Utilization of Platinum Metals, Sino-platinum Metals Co. Ltd., Kunming, 650106 | |
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| 中文摘要: |
| 研究了酸溶法溶解失效Pt/TiO2脱硝催化剂的TiO2载体，进一步富集和回收铂的工艺。结果表明，20% HF+30% HCl对TiO2载体溶解率可达95%，且金属铂基本无分散；系统研究了混酸中HF浓度、反应温度、时间、液固比对载体溶解率的影响；在20% HF+30% HCl为溶剂、反应温度为95℃、反应时间为3 h、体系液固比为10:1的优化条件下，钛载体溶解率达95%以上。对溶解富集物采用传统氯化铵反复沉淀法进行铂精炼提纯，海绵铂纯度≥99.95%，产品质量稳定。 |
| 英文摘要: |
| The process of dissolving the TiO2 carrier of the spent Pt/TiO2 denitration catalyst by acid-dissolving method and further enriching and recovering platinum was studied. The results show that the dissolution rate of TiO2 carrier by 20% HF+30% HCl can reach 95%, and the metal platinum is basically not dispersed. The effects of HF concentration, reaction temperature, time, and liquid-solid ratio in the mixed acid on the dissolution rate of the carrier are systematically studied. Under the optimized conditions of 20% HF+30% HCl as solvent, reaction temperature of 95℃, reaction time of 3 h, and liquid-solid ratio of 10:1, the dissolution rate of the titanium support reached more than 95%. For the dissolved enrichment, the traditional ammonium chloride repeated precipitation method is used for platinum refining and purification. The purity of sponge platinum is ≥99.95%, and the product quality is stable. |
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