Patent ID: 6783655
Filing Date: 2004-08-31
Classification: C04B,C25C

Abstract:
A method of producing aluminium in a cell containing molten electrolyte and cathodically produced aluminium, comprising;manufacturing a component of the cell by providing a slurry of a refractory boride and either applying the slurry to a substrate or forming a self-sustaining body with the slurry, and drying, the slurry comprising particulate preformed refractory boride and/or particulate precursors of refractory boride in a colloidal carrier which contains colloidal particles that have a non-gaussian particle size distribution and that comprise a mixture of at least two different grades of the same colloid having mean particle sizes which differ from one another, each grade of colloid having a generally gaussian particle size distribution; placing the cell component into the cell; and operating the cell to produce molten aluminium with the cell component contacting cathodically produced aluminium and/or the molten electrolyte during cell operation.