Introduction

The Electrolyte Properties Diagrams show in small icon-like overview graphs a property of the electrolyte (the liquidus temperature in the next figure) in dependence of the bath composition. If you are interested in one of these icon graphs you select it by clicking with the mouse pointer into it (the liquidus temperature vs. aluminum fluoride concentration in the next figure) and AlPrg draws a larger diagram, the property diagram, of the icon graph on the left side of the window.

Liquidus Temperature Diagram

The idea of these graphs is to show the dependence of an electrolyte property on one input parameters keeping the other constant. In the property diagram on the left side of the figure you see how the liquidus temperature depends on the aluminum fluoride concentration (between 0 and 30 %) keeping the other concentrations constant at the values of the Electrolyte Properties Page (CaF₂: 4.5%, Al₂O₃: 2.5% etc.). The open circles in the icon graphs and the property diagram represent the concentration (and temperature) values of the Electrolyte Properties Page. AlPrg uses the equation that is selected on the Electrolyte Properties Page (Solheim in the figure).
If, for instance, you are interested how the liquidus temperature depends on the alumina concentration click on the Al₂O₃ icon graph and AlPrg shows the corresponding property diagram.

Alumina Concentration Property Diagram and Icon Graph

The grey regions are the areas where the aluminum oxide concentration is either lower that the alumina content at the anode effect or higher than the maximal alumina solubility in the electrolyte.

Dragging

You can use the property diagram as a GUI (Graphical User Interface). If you move the mouse cursor over the property diagram and press the right mouse button a line, the value line, appears that you can drag across the diagram by moving the mouse and keeping the mouse button pressed. The circle representing the value in the Electrolyte Properties Page follows the line and AlPrg changes the value (the alumina concentration) in the Electrolyte Properties Page. The values in the Electrolyte Properties Page and the Electrolyte Properties Diagrams are updated corresponding to this new value.

Dragging of the Alumina Concentration Value

Remark:
You may drag the alumina concentration value into the maximal solubility area but NOT into the anode effect area.

You can represent all the icon graphs in the property diagram. Consequently you can easily change input values with this dragging action in the Electrolyte Properties Page. AlPrg updates correspondingly all the pages and diagrams that depend on the electrolyte properties.