Graphite antioxidant, also known as stone ring antioxidant coating, is made of nano ceramic materials and widely used in the metallurgical industry. It is sprayed on the surface of graphite electrodes or other graphite products to form a dense protective film, isolate oxygen, seal and prevent corrosion, extend the lifespan of graphite products by 30% to 50%, and is energy-saving, efficient, and environmentally friendly.