Quantitative Analysis of Complex Aluminum Electrolytes by X-Ray Fluorescence

Area of Science:

• Materials Science
• Analytical Chemistry
• Chemical Engineering

Background:

• Future electrolytic aluminum production demands complex electrolyte systems with low temperature and emissions.
• Real-time electrolyte analysis is crucial for enhancing electrolytic process efficiency.
• Accurate online analysis of complex aluminum electrolytes remains a significant technical challenge.

Purpose of the Study:

• To develop and validate a method for determining ingredient contents in complex aluminum electrolytes using X-ray fluorescence (XRF).
• To propose a feasible solution for determining the cryolite ratio (CR) in aluminum electrolytes via XRF.

Main Methods:

• Established calibration curves using 53 standard samples to correlate XRF fluorescence intensity with elemental concentrations.
• Applied the developed method to analyze industrial complex electrolytes.
• Utilized XRF for elemental concentration measurements and cryolite ratio determination.

Main Results:

• Newly constructed calibration curves reduced relative errors in ingredient content analysis to less than 3%.
• XRF-based determination of the cryolite ratio (CR) showed an average deviation as low as approximately 0.02.
• The developed technique meets industrial production requirements for accuracy and reliability.

Conclusions:

• The XRF-based method provides accurate, real-time analysis of complex aluminum electrolytes.
• This technique offers rapid analysis, ease of use, and cost savings for the aluminum industry.
• The method is suitable for ensuring quality control in advanced electrolytic aluminum production.