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R&D History

The Carbone Savoie’s contribution to the improvement of the environmental impact of the electrolysis strongly rested on a steady research activity since the beginning of year 1970.
The working axes which we followed always aimed at reducing the energetic consumption of cells, stretching out cycle’s life products and reducing nuisances of use.

The successive research projects contributed to the passage of the following milestones.

• 1977 : Introduction on the market a ramming paste for ramming at 40°C with an investment in mixing workshop, as replacement of pastes requiring a high temperature mixing at customer’s site.
• 1978 : Development and first test in cell of graphitic grade (HC10) of a cathode at low resistivity.
• 1980 : Work in collaboration with Brochot for adaptation of ramming paste and replacement of the hand ramming by mechanical ramming.
• 1985 : Development and first test in cell of semigraphitic grade (HC3) developed to increase the cathode’s cycle life in cells at 150kA
• 1988 : Adaptation of the HC10 grade to reduce the cathodic voltage drop at 200kA
• 1990 : Introduction on the market of a room temperature ramming paste, “ready to use” with a new investment in mixing.
• 1997 : Adaptation of K grade in association with UCAR, to allow cell’s technology development at 300kA based on graphite cathodes.
• 2002 : Introduction on the market of Eco-Friendly ramming pastes with low PAH emissions during ramming and baking.
• 2002 : Introduction on the market of KI grade with investment in pitch impregnation technology to increase the cathode’s cycle life in cells at 300kA.
• 2004 : Introduction on the market of the graphite D grade with an investment in the graphitizing technology to reduce cathodic voltage drop at 300kA.
• 2007 : Work in collaboration with Alcan for the development of a new cell technology with a reduce of energetic consumption