加利福尼亚芒廷山口的一座美国钼业工司的稀土矿因为1998年的一场核废料泄露事故，在2002年就被关闭了。

The one active mine in the United States, operated by the company Molycorp in Mountain Pass, California, halted production in 1998 after a radioactive-waste spill and was shuttered four years later.

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介绍了从复杂的硫化物废料中回收钼，生产合格的钼酸钠和工业氧化钼的工业实践。

The industrial practice on recovery of molybdenum from sulphide waste materials and production of qualified sodium molybdate and molybdenum oxide were presented.

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本文主要阐述从生产钴钼系统低温变换催化剂所产生的废料中回收钼的工艺条件和操作方法。

This thesis expound the conditions and methods for reclaiming molybdenum from wastage which was produced by preparation of low-temperature catalysts of Co-Mo series.

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