一、前言随着中、重稀土——特别是Sm、Eu、Tb、Y——在高技术领域中需求量的日益增大,其分离提取也越来越受到重视,由于在这方面取得了许多重大进展和新的突破,因此,使中、重稀土的供应量逐渐增加,然而随着占稀土矿物比例较小而产值较大的中重稀土的分离提取,势必将使产值较小而比例较大的轻稀土伴之而来。如何充分利用和消化这些被分离出来的轻稀土,是个值得尽 I. INTRODUCTION With the growing demand for heavy and medium rare earths, especially Sm, Eu, Tb and Y - in the high-tech fields, their separation and extraction have drawn more and more attention. As a result, Many major advances and new breakthroughs have led to a gradual increase in the supply of medium and heavy rare earths. However, with the separation and extraction of medium and heavy rare earths that account for a relatively small proportion of rare earth minerals and large output values, it is bound to make the output value smaller and proportionally Larger light rare earth accompanied. How to make full use of and digestion of these light rare earth is a worthwhile