公开(公告)号：US09797028B2

公开(公告)日：2017-10-24

申请号：US14887896

申请日：2015-10-20

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ming-Chin Cheng ,  Tung-Chun Wu ,  Ching-Yu Tso ,  Hsiou-Jeng Shy ,  Shien-Jen Yang

IPC: C22B59/00 ,  C22B7/00 ,  C22B3/44 ,  C22B3/06

CPC classification number: C22B59/00 ,  C22B3/065 ,  C22B3/44 ,  C22B7/007 ,  C22B9/04 ,  C22B9/05 ,  Y02P10/234

Abstract: A method of purifying yttrium involves purifying element yttrium by high-temperature saturated dissolution, low-temperature recrystallization, high-temperature reduction and vaporization-based removal of impurities, in a simple manner, and at a low cost, such that yttrium element is unlikely to be contaminated by any raw material used in a manufacturing process.