Molybdenite alkali fusion and leaching: reactions and mechanism |
| |
| Authors: | Reza Ebrahimi-Kahrizsangi Mohammad Hasan Abbasi Ali Saidi |
| |
| Affiliation: | 1.Department of Materials Engineering,Islamic Azad University, Najafabad branch,Najafabad, Isfahan,Iran;2.Department of Materials Engineering,Isfahan University of Technology,Isfahan,Iran |
| |
| Abstract: | The production of MoO3 from Sarcheshmeh molybdenite concentrate via a pyro-hydrometallurgical process was studied. The molybdenite concentrate and sodium carbonate were premixed and fused under air atmosphere. Then the fused products were leached in water and the dissolved molybdenum was recovered as ammonium molybdate. The ammonium molybdate was then calcined to produce molybdic oxide. At the fusion stage, the effect of the mass ratio of carbonate to sulfide on the reaction products and the solubility of the products was investigated. The results show that during the fusion, sodium molybdate and sodium sulfate are the final reaction products and sodium sulfide is detected as an intermediate reaction product. By melting at 850°C with 5wt% excess carbonate, the maximum solubility of the products is obtained. The molybdenum is recovered from the solutions as ammonium molybdate. |
| |
| Keywords: | |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《矿物冶金与材料学报》浏览原始摘要信息 |
|
点击此处可从《矿物冶金与材料学报》下载免费的PDF全文 |
|
