The lanthanum acetate was prepared by using lanthanum oxide,lanthanum carbonate and lanthanum chloride liquid from a certain rare earth industry,and the trend and removal of impurity elements such as manganese,aluminum,zinc,iron and lead in the preparation process were investigated.The optimal scheme for preparing lanthanum acetate with lanthanum chloride liquid was established.The research results provide rare earth production enterprises with alternative technical methods for producing rare earth products...