|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||D-40: Roasting Kinetics of Molybdenite Concentrates
||Selçuk Kan, Kağan Benzeşik, Onuralp Yücel
|On-Site Speaker (Planned)
Molybdenum is a refractory metal that has melting point at ~ 2610⁰C. It has high modulus of elasticity even at elevated temperatures. Almost 80% of molybdenum is used for alloying element as ferromolybdenum. When added to steel, molybdenum increases strength hardenability, toughness, elevated temperature strength and corrosion resistance.
Molybdenum metal is produced from its sulphide ore through oxidizing roasting of molybdenite to produce molybdenum trioxide and then purification of molybdenum trioxide and hydrogen reduction of molybdenum trioxide.
In this study molybdenite (MoS2) is roasted in both chamber type furnace and rotary kiln under different condutions such as different temperatures and air atmospheres. Samples were taken off during the roasting process to analyze the sulphur content. After roasting experiments a kinetic study were made to results. Activation energies calculated for both conditions and compared to each other.
The raw materials and the products were characterized by using XRD and AAS.