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联盟石油公司的子公司—莫利科普(Molycorp)公司已在帕斯山联合企业投资1500万美元的新选矿厂开始生产高纯度稀土氧化物。它是世界上最大的稀土矿山和化学联合企业。该厂使用莫利科普公司研制的新的溶剂萃取工艺,使稀土产量增加35%以上。供分选的原矿由该公司的帕斯山氟碳铈矿山提供。选矿厂对矿石进行磨矿和浮选,该厂设计生产能力为45000短吨/年氟碳铈精矿。把氟碳铈精矿加工成混合的稀土化学浓缩物和化合物,该浓缩物和化合物是这座新溶剂
Molycorp, a unit of Alliance Oil Company, has started production of high purity rare earth oxides at a $ 15 million new concentrator at Pas Hill Associates. It is the world’s largest conglomerate of rare earth mines and chemicals. The plant uses the new solvent extraction process developed by Morikop, which increases the production of rare earths by more than 35%. The raw ore for sorting is supplied by the company’s bass bauxite mine. Concentrator ore grinding and flotation, the plant designed production capacity of 45,000 short tons / year bastnaesite concentrate. The bastnaesite concentrate is processed into mixed rare earth chemical concentrates and compounds that are the new solvent