Journal
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
Volume 142, Issue -, Pages 29-36Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2018.02.005
Keywords
Laser-induced breakdown spectroscopy; Aluminum electrolysis; Electrolyte; Molecular ratio
Categories
Funding
- National Natural Science Foundation of China [61473279]
- National Key Research and Development Program of China [2016YFF0102502]
- Shenyang Science and Technology Project [Z17-7-006]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-JSC037]
- Youth Innovation Promotion Association, CAS [2014179]
Ask authors/readers for more resources
The industrial aluminum reduction cell is an electrochemistry reactor that operates under high temperatures and corrosive conditions. Monitoring the molten aluminum and electrolyte components is very important for controlling the chemical reaction process. Due to the lack of fast methods to monitor the components, controlling aluminum reduction cells is difficult. In this work, laser-induced breakdown spectroscopy (LIBS) was applied to aluminum electrolysis. A new method for calculating the molecular ratio, which is an important control parameter that represents the acidity of the electrolyte, was proposed. Experiments were first performed on solid electrolyte samples to test the performance of the proposed method. Using this method, the average relative standard deviation (RSD) of the molecular ratio measurement was 0.39%, and the average root mean square error (RMSE) was 0.0236. These results prove that LIBS can accurately measure the molecular ratio. Then, in situ measurements of the molten aluminum and electrolyte were performed in industrial aluminum induction cells using the developed LIBS equipment. The spectra of the molten electrolyte were successfully obtained and were consistent with the spectra of the solid electrolyte. (C) 2018 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available