The Processing of Molybdenum ——Roasting
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- Category: Molybdenum knowledge
- Published on 25 June 2013
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Roasting in air at temperatures between 500 and 650℃ converts MoS2 concentrate into roasted molybdenite (MoO3) concentrate (also known as technical mo oxide, or tech oxide) by the chemical reactions.
Roasters are multi-level hearth furnaces, in which molybdenite concentrates move from top to bottom against a current of heated air and gases blown from the bottom. The image on the right shows one of the levels in a typical roaster.
Large rotary rakes move the molybdenite concentrate to promote the chemical reaction. Desulfurisation systems such as sulfuric acid plants or lime scrubbers remove sulfur dioxide from the effluent roaster gases.The resulting roasted molybdenite concentrate typically contains a minimum of 57% molybdenum, and less than 0.1% sulfur.
Large rotary rakes move the molybdenite concentrate to promote the chemical reaction. Desulfurisation systems such as sulfuric acid plants or lime scrubbers remove sulfur dioxide from the effluent roaster gases.The resulting roasted molybdenite concentrate typically contains a minimum of 57% molybdenum, and less than 0.1% sulfur.
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