70年代初 ,我国首次发现世界罕见的离子吸附型稀土矿 ,其中的中、重稀土元素含量为其它已知矿物所不及。我国的离子吸附型稀土矿进入国际市场 ,解决了一些长期供不应求的稀缺稀土元素的供应问题。我国已成为世界稀土主要供应国之一 ,每年出口稀土产品 80 0 0～ 90 0 0ｔ(ＲＥＯ In the early 1970s, the rare earth ion adsorption rare earth mine in the world was discovered for the first time in China. The contents of medium and heavy rare earth elements are less than those of other known minerals. China’s ion-adsorption rare earth ore into the international market, to solve some of the long-term supply of scarce rare earth supply. China has become one of the world’s major suppliers of rare earths, annual exports of rare earth products 80 0 0 ~ 90 0 0t (REO