Method for manufacturing graphite anode for electrolytic magnesium chloride

The invention discloses a method for manufacturing a graphite anode, and particularly discloses a method for manufacturing a graphite anode which is formed by casting graphite block anodes in cast iron and is used for electrolytic magnesium chloride, and provides a method for manufacturing a graphite anode for electrolytic magnesium chloride, which is high in a finished product ratio and low in production cost. The method comprises the following steps of: 1) overlapping more than two graphite block anodes along the width direction to form a graphite assembly with a cast-in section, and reserving casting contraction joints between the two adjacent graphite block anodes; 2) sealing the casting contraction joints of the graphite block anodes of the cast-in section on the graphite assembly, and at least arranging protective layers on outer sides of the graphite block anodes of the cast-in section; 3) fixing the graphite block anodes, which are provided with the protective layers, of the cast-in section in a casti