Carbon raiser is a type of carbon-containing substance with low sulfur and low ash. It is used to make up for the carbon content lost in the smelting process of steel, while improving the strength and other properties of steel.
During the smelting process of steel products, due to the long smelting time and heat preservation time, the carbon content in the molten iron may be lost significantly, resulting in a reduction in the carbon content in the molten iron and failing to meet the expected value for eaf steelmaking. To compensate for this loss in carbon content, carbon raiser are added.