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我国南方由独居石生产的氯化稀土产品,其总α比放一般都在2～3×10~(-6)居里/公斤,远远超过国家允许标准(小于1×10~(-7)居里/公斤),妨碍了稀土的推广应用。为了
In China, the total rare earth products produced from monazite in the south of China are generally in the range of 2 to 3 × 10 -6 (Curie / kg), far exceeding the national allowable standard (less than 1 × 10 -7 ) Curie / kg), hinder the promotion and application of rare earth. in order to