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Electrolytic bath analysis for aluminium industries

The production of aluminium from purified alumina by electrolysis (Hall-Héroult process) is a very energy-consuming process. Continuous monitoring of the bath composition is of paramount importance in order to determine, adjust and maintain the optimal bath composition which results in significant energy and cost savings.

X-ray diffraction (XRD) in combination with a Rietveld quantification is the optimal technique for the analysis of electrolytic baths. It provides the true phase concentrations in addition to common bath parameters like bath ratio and excess AlF3 (XSA) as well as CaF2 or free alumina content.

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