• 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

Comment: this page describes the old OBSOLETE version of the Anode Table Interactive Web Page. Please be patient for an updated version.

The Hall-Héroult electrolysis process consumes its carbon anodes and consequently the old used anodes have to be replace after a time period. On the Anode Table Layout interactive webpage you investigate the time behavior of the individual anodes of the anode table during one anode cycle period. As an example you see in the next figure the side view of the two anode rows of the electrolytic cell. The anodes show different widths and heights because the have been gradually consumed during their lifetime in the electrolytic cell. The figure depicts the state of the anode table on the 15^th days of the anode cycle period. Anode number 12 has been replaced by an new one.

Layout Anode Table Web Page.

This figure shows the side view page of the Layout Anode Table Web Page. On the 15^th day of the anode cycle period the anode number 12 has been replaced by a new anode. The anodes are of different width, high and color according to their age.
To display this page with your browser you need the Microsoft Silverlight Plugin. If necessary, please download and install the plugin from here.

Data Page

When you open the Anode Table Layout Webpage it starts with the Data Page:

Data Page of The Layout Anode Table Interactive Webpage.

On this page you define the principle parameters of the anode table: number of anodes, the dimensions of new and consumed anodes (butts) and the anode life time in the electrolytic cell (anode change cycle).

On this page you change the default values of the principle parameters of your anode table in conventional way namely by entering your values with the keyboard into the input fields. The parameters are: the number of anodes, the dimension of the new anodes (length, width and height), of the consumed anodes (butt height and butt surface area) and the anode change cycle time.

Layout Page

When you click on the Layout tab on the top of the page you see the Layout page:

Default Layout Page.

The top view of the anode table shows the anodes together with the default arrangement of the anode number circles. On the bottom you see the time slider with anode number rectangles that indicate the day when the anode will be changed i.e. the old anode is replaced by a new one.

The top view of the anode table shows the anodes together with the anode number circles. These circles are arranged corresponding to the internal anode numbering. On the the time slider indicates with anode number rectangles the day when an anode will be changed (for instance, anode 15 on the 19^th anode cycle day).

Anode Numbering

You open the Anode Numbering Dropdown Menu when you click on the Dropdown Menu Button on the topside of the page. At present you may only select between the sequential and inverted sequential pre-defined anode numbering scheme. If you want to use your own numbering scheme please select Individual Anode Numbering. The anode number circles are arranged on the long sides of the cell. You drag then the number circles over the corresponding anodes.

Anode Numbering Dropdown Menu.

When you click on the Dropdown Menu Button on the topside of the page you open the Anode Numbering Dropdown Menu. At the time being you may select from two pre-defined anode numbering schemes (sequential or inverted sequential) or you want to define your own numbering scheme (Individual Anode Numbering).

On the left side of the next figure the anode number circles 1, 8, 9 and 20 have been dragged over the corresponding anodes.
You may start the dragging action with the mouse pointer from a pre-defined anode numbering scheme. This has been done on the right side namely anode number 18 was dragged to the position of anode number 6 and number 8 to the position of number 13. The anode number circles 6 and 13 have moved to the pot long side to be dragged to another position.

Dragging Anode Number Circles.

After you have selected Individual Anode Numbering on the dropdown menu the anode number circles are arranged on the long side of the cell. With the mouse pointer you drag then the circles to anodes (20, 8, 9, 1 in the left scheme). In a pre-defined numbering you may drag a numbering circle to the wanted position (anode number 8 to anode number 13 and 18 to 6 in the right scheme). The replaced numbers are arranged on the cell long sides (number circles 13 and 6).

When the dragging action i.e. the numbering procedure is finished the anodes are drawn in the size and color of the anode age according to the new numbering scheme.

Anode Change

On the bottom of the page you see the time slider indicating the days of the anode cycle period. Above the slider anode there are anode change rectangles arranged that indicating the cycle day when an anode is changed. You may change this default arrangement by dragging an anode change rectangle with the mouse pointer to another day. You may even change several anodes (maximal four) on the same day. In the next figure you see that two anodes are changed every second or third day of the anode change cycle. The individual anodes are drawn in the size and color according to their age.

Double Anode Change.

The anode change rectangles have been arranged by mouse pointer dragging action in such a way that two anodes are changed every second or third day of the anode cycle time period.

Time Slider

When you press the Go/Stop Button of the time slider it starts an animation: the anodes change their color and size according to their age corresponding to the position of the time slider bar.

Time Slider.

After you have pressed the Go/Stop Button it starts an animation showing the size and color of the anodes according to their age. In this figure the Time Slider Bar has reached day 10 of the anode change cycle and consequently anode 6 and 15 are changed.

Side View Page

After you have pressed the Side View tab the Side View Page is shown (see next figure).

Side View Page.

The Side View Page depicts the two anode rows of an electrolytic cell seen from the side. The height, width and color of the anodes correspond to their age at the 9^th day of the anode cycle period. The butts of anode 25 and 5 have been replaced by new anodes.

The next figure shows the parameter of the Data Page and the anode numbering scheme of the Layout Page that produced the side view of the figure above.

Parameter and Anode Numbering.

Values of the Data Page and anode numbering scheme of the Layout Page corresponding to the above figure. The butts of anode 25 and 5 have been replaced by new anodes.