Activated lime is widely used in the steel, alumina, magnesium metal, calcium carbide, and power plant desulfurization and papermaking industries. Activated lime is an important auxiliary raw material for steelmaking. The use of activated lime has a series of characteristics such as improving the quality of molten steel, increasing production, reducing steelmaking consumption and costs, and stabilizing operations. Practice has proven that enterprises that use activated lime for steelmaking have achieved significant economic benefits. In the past decade, the production of lime for steelmaking in China has increased by 40%, but the proportion of high-grade lime with an activity of over 300ml has increased from 27% of the total amount of steelmaking lime to 29.5%, an increase of only 2.5%.