• Table of Contents
• Introduction
• Plant Data
• Electrolyte Properties
• Concentration Converter
• Cell Voltage
• Alumina Feeding
• Anode Table Layout

• Table of Contents
• Introduction
• How to Use AlPrg
• Plant Data
• Alumina Feeding
• Electrolyte Properties
• Cell Voltage

• Table of Contents
• Introduction
• ATab Version 2
• Layout-View
• Evaluation-View
• 3D-View
• Floating Windows
• Optimization Window
• Examples
• Downloads

• Table of Contents
• Principles Hall-Héroult
• Mass Balance
• Electrolyte Properties
• Cell Voltage
• Energy Balance

• Current Efficiency

• Raw Materials

• Cell Operation

• Measurements

• Environment, Emissions
• Examples, Exercises
• Literature

• News and Events
• Name Index
• Subject Index
• Sitemap
• Recreation

New Program Layout of ATab Version 2

Version 1 of ATab consists of three pages: the principle 3D-View page and two docked pages, the Anode Table Data page and the Anode Table Layout page. The user can convert these docked pages to floating windows by dragging a page away from its docking position.
In ATab Version 2 the program layout was completely revised andATab Version 2 shows now its content on two types of panes namely stationary views and floating windows.

Stationary Views

ATab represent the stationary views in the main program window. You use these views to define the layout of the anode table, to study the evaluation results and investigate a three dimensional (3D) view of the anode table. With the time slider you track the behavior of the anode table during an anode change cycle period.

Layout-View

On this view you define the anode numbering pattern and the anode change schedule. You drag with the mouse pointer an anode number circle to the selected anode or an anode change rectangles to the wanted cycle period day.

Evaluation-View

This view shows the evaluation results as numerical values or graphical representation. These values are: anode change distance, anode weights and heights as well as surface differences. ATab calculates daily values for each cycle period day and average values for the whole cycle period.

Perspective (3D)-View

You can add to the three dimensional (3D) view of the anode table a representation of the electrolyte and the aluminum pad. An arrow indicates the flow direction of the electric line current. You can show a coordinate system to indicate even better the orientation of the electrolytic cell.

Floating Windows

After you have opened a floating window you can move and place it anywhere on the computer screen. You execute the following task by using these windows: define the parameters of the anode table, examine the anode table layouts that are stored in the memory of ATab, change the numbering pattern and define precisely the parameters of the three dimensional perspective representation.

Anode Table Data

This window shows the significant values of the anode table and the electrolytic cell. You change these data by entering the wanted values into the input field with the keyboard or by turning the mouse wheel.

Anode Table Layout History

When you change parameters of the anode table layout ATab creates always a new layout version. In this way you can come back to the individual steps of your modifications or even to your original layout. You may save a single layout or the whole layout history as an XML file.

Numbering Pattern

On this window you modify a given numbering pattern to a standard or random pattern without changing the principal layout. You may also change the anode that starts the anode cycle period.

3D-View Parameter

If you want to represent several layouts with the same perspective projection parameters you define on this windows precisely the corresponding values.
On this window you toggle also the representation of the electrolyte, the aluminum pad and the coordinate system.

Optimization Window

A special floating window is the Optimization window. ATab shows in this window the results of the optimization calculations namely permutations of the anode table layout selected according to given parameter. The next figure shows as an example the result of Expanding Permutations where adjacent double anodes (drawn blue in anode table layout schema of the next figure) are added left and right to constant i.e. grey single and double anodes. ATab permutes the layout of the newly added (blue) anodes keeping the layout of the grey anodes constant.

Optimization Window.

This figure shows the results of Expanding Permutations calculations. ATab permutes the layout of double anodes (blue in the schematic anode table layout) that are added left and right to grey single and double anodes whose layout is kept constant during the permutation calculations.