Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Studies on Processability of Iranian Bauxite Resources to Produce Alumina in Jajarm Alumina Beneficiation Plant

Document Type : Original Research Paper

Authors
O. Gerayloo 1
S. H. Hosseini 2
J. Sarghaini 2
R. Salimi 3
1 Sama Technical and Vocational Training College, Islamic Azad University, Shahrood Branch, Shahrood, Iran
2 Islamic Azad University, Tehran South Branch, Department of Mining Engineering, Tehran, Iran
3 Jajarm Alumina Complexes, Research and Development Section, Jajarm, Iran
10.22071/gsj.2011.55239
Abstract
Jajarm bauxite mine as a largest known bauxite ore reserves with more than twenty million tons of diasporic bauxite, located in the north of Khorasan province, Iran. This bauxite mine cannot provide the suitable feed for at least twenty tears. Therefore, the possibility of using other bauxite deposits such as Shah-Bolaghi bauxite mine in Tehran province and Sorkh-cheshmeh mine in the north of Khorasan province was investigated. These studies were carried out based on the dissolution and sedimentation velocity of red mud. The results show that using these deposits separately is not applicable, because of low dissolution and/or low sedimentation velocity of red mud. The other parameters such as dissolution temperature, the amount of lime and Na2Oc must be carefully controlled to have the better results.  Accordingly, a mixture of 50-50 Jajarm and Shah-Bolaghi bauxite ore has had the better performance with higher dissolution efficiency and also the lesser alumina amount in red mud.
Keywords
Bauxite
Alumina
Sedimentation velocity of red mud
dissolution efficiency
Jajarm Mine
Shah-Bolaghi Mine
Sorkh-Cheshmeh Mine
References
Davodi, M. G. & Heidar, M. R., 2002 - Characterization of alborz, zagros and central iranian plateau bauxite for tube digestion processing, 9th International Congress of ICSOBA, Vienna
Guoyao, G. & Longzhang, W., 2001 - Improvements on digestion in bayer process, Light metal , Proceedings of Sessions, TMS Annual Meeting, Pennsylvania
Kelly, R., Edwards, R., Debore, D. & McIntosh, P., 2002 - New technology for digestion of bauxites, Light Metal
Papanastassiou, D., Csoke, B. & Solymar, K., 2002 - Improved Preparation of the Greek Diasporic Bauxite for Bayer Process, Light Metal, p.67
Zhonglin, Y. & Songqing, G., 2001- The Influence of Lime Addition on Scaling Rate Preheating of Diasporic Bauxite Slurry, Light Metal, p.139
Scientific Quarterly Journal of Geosciences
Volume 20, Issue 80
Winter 2011
Pages 113-118