废旧钕铁硼提取氧化钕和氯化镝工艺及生产实践

The technology and productive practice of taking Nd oxide and Dy chloride out of NdFeB waste

论述了从废旧NdFeB原料中提取单一Nd2O3 和DyCl3 的工艺流程。生产实践表明,所选用的工艺流程适合处理各种类型的废旧NdFeB原料 ,具有流程短、衔接好、操作方便等优点,产出的氧化钕产品纯度达99 %～99.9% ,氯化镝产品的纯度大于99.5% ,两产品的平均收率分别为91.66 %和90.64%。

The paper presents the technological process on taking single Nd2O3 and DyCl3 out of NdFeB waste. The productive practice demonstrate that the technological process is fit for handling all kinds of NdFeB waste. The technology has some advantages such as simple process, good connection, convenient operation. The purity of Nd oxide come up to 99～99.9 percent, the purity of Dy chloride is higher than 99.5 percent. The average recovery rate of two products is 91.66 percent and 90.04 percent separately.