Method for preparing TiB2 cathode coating for aluminium electrolysis

The invention provides a method for preparing a TiB2 cathode coating for aluminium electrolysis. The method comprises the following steps: grinding such materials as TiB2, a carbon-based material, an additive and the like, then mixing the ground materials proportionally and further mixing the ground materials uniformly in mixing and kneading equipment to obtain a solid powder mixture; adding a diluent into an adhesive, continuously stirring the two materials until the two materials are fully mixed uniformly; and pouring the uniformly mixed mixture of the diluent and the adhesive into the mixing and kneading equipment, nixing the mixed mixture of the diluent and the adhesive with the solid powder mixture and stirring the materials until the materials are mixed uniformly, thus obtaining the TiB2 composite required for aluminium electrolysis. The method has the following beneficial effects: after the product produced by the method is used in an aluminium electrolytic cell, the service life of the aluminium electrolytic cell is greatly prolonged and simultaneously the current efficiency of an aluminium electrolysis process is greatly improved, thus lowering the production cost of aluminium per ton; and the method has the advantages of short process flow, low production treatment cost and low environmental pollution.