Combined with the company "iron and steel, authors" overall production targets, steel mills in combination with the actual market changes, develop a variety of iron increase steel section optimization scheme, but simply depending on the types and the change of the ratio of molten iron and scrap steel, unable to complete the optimization of the hot metal consumption and company benefit, be badly in need of a good carbon agent temperature for temperature compensation, combined with advanced enterprise for standard and industry experience collection, graphite carbon ball is chosen as the final carbon agent mention temperature, and test a variety of composition proportion, eventually identified in accordance with the best composition of carbon graphite ball steelmaking production.