Mamdouh Omran, Timo Fabritius, Ahmed M. Elmahdy, Nagui A. Abdel-Khalek, Stanislav Gornostayev, Improvement of phosphorus removal from iron ore using combined microwave pretreatment and ultrasonic treatment, Separation and Purification Technology, Volume 156, Part 2, 2015, Pages 724-737, ISSN 1383-5866, https://doi.org/10.1016/j.seppur.2015.10.071
Improvement of phosphorus removal from iron ore using combined microwave pretreatment and ultrasonic treatment
|Author:||Omran, Mamdouh1,2; Fabritius, Timo1; Elmahdy, Ahmed M.2;|
1Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Finland
2Mineral Processing and Agglomeration Lab, Central Metallurgical Research and Development Institute, Cairo, Egypt
|Online Access:||PDF Full Text (PDF, 2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020041618911
|Publish Date:|| 2020-04-16
Most of the past studies examined the effects of ultrasonic treatment on the removal of phosphorus, silica and alumina minerals from iron ores. In the present work, the effect of combined microwave pretreatment and ultrasonic treatment on the efficiency of disintegration and removal of phosphorus and other gangue minerals associated with iron ores has been studied. Three different iron ore samples have varying total iron concentration (TFe) and P₂O₅ content and mineralogical textures were studied.
Microwave pretreatment generated intergranular fractures between the gangues (fluorapatite and chamosite) and oolitic hematite. These intergranular fractures improved liberation of iron ore, and accelerated ultrasonic disintegration and removal of phosphorus and gangue minerals from oolitic hematite. The results indicated that microwave pretreatment increases the efficiency of ultrasonic disintegration and removal of particles by about 20% compared to untreated sample. The results of ultrasonic treatment are quite promising. Significant increase in iron grade and reduction in phosphorus and alumina content of enriched product can be obtained. Depending on the sample texture and phosphorus distribution, about 59% phosphorus removal can be obtained.
Separation and purification technology
|Pages:||724 - 737|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
The authors acknowledge (Cultural Affair and Mission Sector, Egypt) and CIMO (Center for International Mobility, Finland) for their financial Grant for performing the present research work.
© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.