The invention relates to a method for recovering
rare earth from waste
rare earth luminescent material, comprising the following steps: collection of waste
rare earth luminescent material, including quick identification on rare earth
fluorescent lamp and dismantling and breaking of the rare earth
fluorescent lamp, breaking of a
CRT display, and peeling and collection of the waste rare earth
luminescent material and a
glass matrix; pretreatment on the waste rare earth luminescent material, including demercuration oxidation
precipitation, alkali fusion and acidolysis; extraction separation of rare earth elements to obtain rare earth
chloride enrichment;
extraction purification of the rare earth elements to obtain high-purity rare earth
chloride;
precipitation separation of the rare earth elements to obtain
oxalate rare earth or
carbonic acid rare earth precipitates; and
sintering of the
oxalate rare earth or
carbonic acid rare earth precipitates to obtain high-purity-level rare earth
oxide. The method realizes separation of rare earth elements including Ce, Eu, Tb and Y from
impurity elements including Mg, Ba, Ca and the like and complete separation and
recovery of light, mediate and heavy rare earth elements, and purification is carried out to obtain the high-purity rare earth
oxide, so that the resources are comprehensively recycled, the process flow is reasonable, economic and practical, the rare earth
recovery rate is high and the added value of the product is high.