Electrode paste and preparation method thereof

The invention relates to an electrode paste, which is prepared from the following raw materials in parts by weight: 23 to 25 parts of oil, 27 to 30 parts of graphite powder, 20 to 25 parts of calcined coal, 30 to 35 parts of anode scrap block, 10 to 15 parts of zirconium dioxide, 5 to 10 parts of modified additive and 3 to 5 parts of tin oxide, the mass ratio of the nano calcium carbonate to the nano silicon dioxide to the resin is 1: 2: 1, the particle size of the calcined coal is 4-12mm, the particle size of the graphite powder is 0.5-4mm, and the particle size of the anode scrap block is 10-30mm. According to the electrode paste and the preparation method thereof, the electrode paste is composed of the oil, the graphite powder, the calcined coal, the anode scrap block, the zirconium dioxide, the modified additive and the tin oxide, the electrode paste prepared from the materials is good in oxidation resistance and electrical conductivity and high in mechanical strength, and in addition, the electrode paste