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| 选择性溶解Pt-Re重整废催化剂工艺研究 |
| Selective Dissolving Technology of Spent Pt-Re Reforming Catalyst |
| 投稿时间：2014-03-20 |
| DOI： |
| 中文关键词: 有色金属冶金 废催化剂 贵金属 铂 铼 回收 |
| 英文关键词: nonferrous metallurgy spent catalyst precious metals platinum rhenium recovery |
| 基金项目:国家高技术研究发展计划(863计划)项目(2012AA063203、2012AA063204、2012AA063207)。 |
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| 中文摘要: |
| 采用选择性溶解工艺，解决了Pt-Re重整废催化剂再生利用过程中铂铼分离难的问题。经实验研究，确定了废催化剂焙烧预处理的最佳条件为500℃下焙烧3 h，用20%硫酸溶解废催化剂，加入适量的硫酸亚铁抑制铂溶解，铼的溶解率可达98%，铂的溶解率为0.8%，渣率仅为7%，实现了铂和铼的分离，有利于铼的精炼提纯及铂的富集。 |
| 英文摘要: |
| The hurdles of platinum-rhenium separation in the recovery process of spent Pt-Re reforming catalyst have been overcome by a selective dissolving technology. The technology involves roasting the spent catalyst at 500℃ for 3 hours, followed by dissolving Re in 20% sulfuric acid solution. Co-dissolution of Pt can be inhibited by addition of certain amount of ferrous sulfate. Under these conditions, effective separation of platinum from rhenium can be achieved. 98% of rhenium in spent Pt-Re reforming catalyst is converted into the solution and platinum dissolution is reduced to 0.8%, while the residue rate is only 7%. |
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