The Hall-He´roult electrolytic process used throughout the world to produce aluminium from alumina is highly energy intensive. Norsk Hydro ASA describes the vaule on on-line PSA in optimizing this process.
                        
                                            
                            The Hall-He´roult electrolytic process used throughout the world to produce aluminium from alumina is highly energy intensive. Norsk Hydro ASA describes the vaule on on-line PSA in optimizing this process.