Web Pages and Software for Aluminum Smelting

This website is dedicated to software for aluminum smelting. The software helps you to answer questions or to solve problems of every day aluminum production as well as of research and development. For this purpose you use interactive web pages or PC-programs that you may download and install on your computer.


For several years CellVolt, a MS Windows PC program, was used to investigate the influence of several parameter on the cell voltage like cell layout (dimensions of anode table, targe current intensity), operational factors (electrolyte composition and mass) and electrolyte properties (temperature, gas bubbles under the anode). CellVolt lets you optimize these parameter, for instance, concerning energy consumption or heat loss.
HHCellVolt is a new improved version of CellVolt that contains in addition to updated program items (treating Ampere Creeping, for instance) a completely new feature namely the investigation of electrolysis cells with Four Anode Rows (Lit.).


The new Extended Thermal Balance considers in addition to the electrolyis reactions, heating of alumina, anodes and the internal busbar system (as Haupin's balance) events like anode change or reactions like anode airburn, electrolyte vaporization or alumina phase change, etc. See the corresponding diagram and the detail values.

Extended Thermal Balance

The HHCellVolt user's guide is under construction. You may download a demo version from the download page.
Please see also the Android version.


A program was developed to investigate the behaviour of the gas bubbles under the carbon anode. You study especially the influence of slots in the anode body. These slots facilitate the removal of the bubbles from underneath of the anodes. The simulation produces among other things values for the bubble voltage and the corresponding voltage fluctuation with time.


You may transfer the simulation data (bubble voltage drop, layer thickness and volume fraction) to HHCellVolt for the determination of the bath voltage.
Please visit the corresponding HHBubbles web page.

Interactive Web Pages

The Cell Schema web page shows the Structure of an Hall - Héroult Electrolysis Cell. This page should acquaint you with the construction of such an electrolysis cell.

cell schema

The main idea of this page is that the page shows part of the electrolysis cell and you place the item at the right place. You do this by dragging the right anode, for instance, to the alumina hopper as the next figure is showing. Hitting the Move Item button helps you to find the right place.
You start with the Play button a short animation that shows and moves the cell items.

right anode

Please visit the Cell Schema web page.

Using the feature of HTML5 and JavaScript a interactive web page was developed that visualizes the alumina feeding process. On this web page first you create an opening in the top crust of the electrolysis cell by using the crust breaker. Then you activate the alumina feeder to add a defined amount of alumina to the cryolite electrolyte. Please visit the corresponing web page to test these visualization features.

feeder animation

This Web Site is under Reconstruction!


st joseph

If you are interested, please look at this crumbling exercise.