METHOD FOR TREATING SOLUTION CONTAINING RARE EARTH

摘要

A method for treating solution containing ammonium and rare earth is provided in the present invention. The method comprises: (1) adsorbing the solution containing rare earth with fine clay, the condition of adsorbing with the fine clay makes the concentration of rare earth in form of rare earth oxide not more than 1mg/L in the obtained solution adsorbed by the fine clay; (2) adsorbing the solution adsorbed by the fine clay with coarse clay, the condition of adsorbing with the coarse clay makes the concentration of rare earth in form of rare earth oxide not more than 0.5mg/L in the obtained solution adsorbed by the coarse clay, and the particle size of no less than 90% particles of the fine clay is less than the particle size of the coarse clay, and the particle size of the fine clay is from 1 to 250μm, the particle size of the coarse clay is from 50 to 1000μm; (3) desorbing rare earth from the fine clay following adsorbing with the fine clay and from the coarse clay following adsorbing with the coarse clay. Rare earth can be effectively recovered by the method.