It was pointed out that the MIBK in thiocyanic acid system for separating zirconium and hafnium was effective and with complete technology,it can be used in production on a large scale.

• MIBK法的主要缺点是必须用有毒的SCN-作稀释剂,工艺复杂而冗长,操作不易控制,劳动强度大,收率低。