70至80年代是我国稀土矿山与工业生产大发展阶段,主要是内蒙白云鄂博矿石中的稀土元素得到综合利用。包钢选厂的产品(精矿)含氧化稀土由15％逐步提高到30％与60％。与此同时,离子吸附型矿床的发现与开发,山东微山湖郗山矿的开发与原有的独居石生产、磷钇矿的生产,促进了我国稀土工业的发展。但是,包钢每年的稀土总产量与矿山采出量相 From 1970s to 1980s, China’s rare earth mines and industrial production of large stage of development, mainly in Inner Mongolia Bayan Obo ore in the comprehensive utilization of rare earth elements. Products (concentrates) of Baotou Steel Processing Plant gradually increase the content of rare earth oxide from 15% to 30% and 60%. At the same time, the discovery and development of ion-adsorbed deposits, the development of Weishan mine in Weishan Lake, Shandong Province, and the production of monazite and xenotime have promoted the development of rare earth industry in our country. However, Baotou annual output of rare earth and mining phase