Multi-electrolytic cell comprising a plurality of diaphragm-free unit cells and the use of same for preparing alkali metal chlorates

Claim 1

A PROCESS FOR THE MANUFACTURE OF ALKALI METAL CHLORATE BY THE ELECTROLYSIS OF AN AQUEOUS SOLUTION OF ALKALI METAL CHLORIDE WHICH COMPRISES USES A MULTI-ELECTROLYTIC CELL HAVING A PLURALITY OF DIAPHRAGM-FREE UNIT ELECTROLYTIC CELLS, EACH OF SAID CELLS HAVING AN ANODE AND A CATHODE WITH THE CELLS ARRANGED SO THAT A PARTITION CARRIES THE ANODE OF EACH CELL AND THE CATHODE OF THE NEXT CELL, SAID PARTITION COMPRISING AN INERT TITANIUM METAL SHEET SEPARATING THE ANODE OF ONE UNIT ELECTROLYTIC CELL FROM THE CATHODE OF AN ADJACENT UNIT ELECTROLYTIC CELL, THE ANODE IN EACH UNIT CELL COMPRISING A LAYER OF A PLATINUM METAL ON ONE SIDE OF THE TITANIUM METAL AND THE CATHODE IN SAID UNIT CELL COMPRISING A LAYER OF A METAL SELECTED FROM THE GROUP CONSISTING OF A PLATINUM METAL, IRON AND STEEL ON THE SIDE OF THE NEXT TITANIUM METAL SHEET OPPOSED TO THE ANODE OF SAID UNIT CELL, AND EMPLOYING AN ANODE CURRENT DENSITY OF AT LEAST 2 KA/M.2.