废弃SCR脱硝催化剂资源化利用研究进展

Research progress on recycling spent SCR denitrification catalyst

介绍了SCR脱硝催化剂中稀有金属回收浸出和分离2个阶段的技术进展,对其中的各种方法做出了总结和展望。废弃SCR脱硝催化剂中有价金属回收流程长、金属回收率和产物纯度低等问题,高压碱浸-离心过滤-离子交换工艺路线有望解决,并具有较高的工业化前景。

The recovery of rare metals from spent SCR denitration catalyst has to undergo the leaching and separation stages.Global technical progress in these stages is introduced and related methods are summarized and predicted.In the recycling of spent SCR denitration catalysts,the existing problems such as long rare metals recovery process,low yielding rate of metals and poor product purity are expected to be solved by a high-pressure alkaline leaching-centrifugal filtration-ion exchange process route,which has a high industrialization prospect.