Alcoa STARprobe?

摘要

Alcoa STARprobe? is a probe device/system used to measurecryolitic bath properties including Superheat, Temperature,Alumina concentration, and cryolite Ratio (acidity), STAR, alltogether in real time for active pot control. The proprietarymeasurement principle is based on differential thermal analysis(DTA). This paper shows the fundamentals of operation alongwith the correlation of all the analysis with the accepted methodsof XRD and pyrotitration for acidity, thermocouples for BathTemperature and LECO and XRF analysis for alumina. Thetiming of the measurement will be shown to be equal to thetraditional methods and the reliability (including reusable use ofthe probes) will also be described.