3. Extractive metallurgy
3.1 Mineral beneficiation
After extraction, ore from primary molybdenum mines is crushed and ground to release the molybdenite, and beneficiated by flotation. The crushing and flotation operations are repeated several times to achieve a recovery rate of around 85%. The concentrate obtained has the following chemical composition:
70 to 80% Mo, 0.25 to 2.5% Cu, 0.1 to 0.9% Pb, 0 to 3.0% Fe, 0.5 to 1.5% insoluble acids (SiO 2 , Al 2 O 3 ).
Molybdenite is isolated from copper concentrates by a series of flotation operations that selectively separate molybdenite from the various copper sulfides [chalcopyrite...
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Extractive metallurgy
Solid molybdenum production
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The price of molybdenum powder in 1992 was in the region of $15 to $20; manufacturing difficulties and the cost of milling considerably increase the price of rolled semi-finished products as the diameter or thickness decreases (figure
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