The Research on Sodium in Fly Ash Red Mud was Removed by Using Magnesium Salt
Fei Li, Guanghui Bai, Chao Chen, Huidong Xie
Available Online March 2014.
- https://doi.org/10.2991/mce-14.2014.132How to use a DOI?
- Fly ash red mud; Magnesium salt; Sodium; Cement; Environment protection.
- Fly ash red mud occupied a great quantity of soils and polluted water source because of it has a very high sodium content. In the present work, the magnesium salts were used to remove sodium from fly ash red mud. The Mg2+ replaced Na+ from the compounds in the fly ash red mud and then the new created compounds dissolved in water to remove Na+. The reaction time, reaction temperature, liquid-solid ratio and magnesium salt/Na2O ration were studied. The optimal reaction conditions are: reaction time is 80 min, reaction temperature is 80 , liquid-solid ratio is 5 and magnesium salt- Na2O ratio is 2 for Mg(NO3)2 and MgSO4, respectively. Mg(NO3)2 have a better property for removing sodium from fly ash red mud than MgSO4. Both of them can achieve the requirement that make the sodium content below 2w%. The treated red can be used as raw materials in cement industry.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Fei Li AU - Guanghui Bai AU - Chao Chen AU - Huidong Xie PY - 2014/03 DA - 2014/03 TI - The Research on Sodium in Fly Ash Red Mud was Removed by Using Magnesium Salt BT - Proceedings of the 2014 International Conference on Mechatronics, Control and Electronic Engineering PB - Atlantis Press SP - 594 EP - 597 SN - 1951-6851 UR - https://doi.org/10.2991/mce-14.2014.132 DO - https://doi.org/10.2991/mce-14.2014.132 ID - Li2014/03 ER -