The Processing of Molybdenum —— Smelting Ferromolybdenum
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- Category: Molybdenum knowledge
- Published on 25 June 2013
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Some of the by-product molybdenite concentrates from copper mines contain small quantities (<0.10%) of rhenium. Molybdenum roasters equipped to recover rhenium are one of the principal commercial sources for this rare metal.
Between thirty and forty percent of tech oxide production is processed into ferromolybdenum (FeMo). The oxide is mixed with iron oxide and reduced by aluminium in a thermite reaction, producing a ferromolybdenum ingot weighing several hundred kilograms.
The product contains between 60 and 75% molybdenum, balance essentially iron. After air cooling, the ingot is crushed and screened to meet specified ferromolybdenum particle size ranges.
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