The Research on Sodium in Fly Ash Red Mud was Removed by Using Magnesium Salt

DOI

https://doi.org/10.2991/mce-14.2014.132How to use a DOI?

Keywords

Fly ash red mud; Magnesium salt; Sodium; Cement; Environment protection.

Abstract

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.

Download article (PDF)

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  -