Process Optimization of Preparation for Si-Al alloy by Carbon Reduction Coal Fly Ash

DOI

10.2991/ifeesm-17.2018.225How to use a DOI?

Keywords

coal fly ash; Si-Al alloy; HSC chemistry; reduction;carbon

Abstract

The influence of different carbon content and temperature on the carbothermal reduction coal fly ash and the optimum conditions of carbothermal reduction coal fly ash were investigated. The effect of temperature on the equilibrium components of coal fly ash during carbon reduction process was simulated by using HSC Chemistry 6.0 software. The content of aluminum and silicon were calculated. The results showed that the content of Si and Al were increased with the increase of temperature.During the reduction of coal fly ash with carbon, the silica was preferentially reduced. When the carbon content was 36%, the content of silicon was the largest, and the amount of silicon was increased gradually with the increase of temperature. The optimum carbon content of aluminum oxide in coal fly ash was 28%, and the recovery of aluminum was decreased with the increase of carbon content.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Zhiling Bai
AU  - Bingke Qin
AU  - Minglei Lian
AU  - Yingju Miao
PY  - 2018/02
DA  - 2018/02
TI  - Process Optimization of Preparation for Si-Al alloy by Carbon Reduction Coal Fly Ash
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 1233
EP  - 1236
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.225
DO  - 10.2991/ifeesm-17.2018.225
ID  - Bai2018/02
ER  -