About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Rare Metal Extraction and Processing
|
Presentation Title |
Purification of a Low-grade Molybdenite Ore for Industrial Steel Production |
Author(s) |
Alafara Abdullahi Baba, Christianah O. Adeyemi, Mamata Mohapatra, Mustapha A. Raji, Fausat T. Akanji, Abdul G.F. Alabi |
On-Site Speaker (Planned) |
Alafara Abdullahi Baba |
Abstract Scope |
Continuous demands for industrial molybdenum compounds such as MoO3 for steel coating applications cannot be overemphasized, as its highly characterized with improved pitting corrosion and heat resistance properties. In this study, molybdenum purification from a Nigerian low-grade molybdenite ore was investigated by sulphuric acid solution. The raw ore and selected products at optimal conditions were accordingly characterized. At optimal leaching conditions: temperature = 75 °C, [H2SO4] = 2.5 M, particle size < 50 µm, S/L ratio = 1:10 at 300 rpm, 64.7% molybdenum dissolution was achieved within 120 minutes. Calculated activation energy of 35.46 kJ/mol and a reaction order 1.02 established suggests a first order diffusion-controlled reaction mechanism. The residual products analyzed by X-ray diffraction containing co-mixtures of siliceous materials including quartz (SiO2 : 96-900-5020) and haleniusite (La1.84Ce1.80Nd0.28Pr0.08O4.48F3.52 : 96-901-0570) could be further re-processed as precursor for stainless steel production. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Hydrometallurgy, Surface Modification and Coatings |