The principle and characteristics of calcium treatment of molten steel with metallic calcium particles is the modification treatment of inclusions in clean molten steel by metallic calcium.

　　Using feeding machine equipment to inject into molten steel can greatly improve the absorption of calcium alloys and enhance the quality of molten steel. It can improve the purity of molten steel, reduce the oxygen content and oxide inclusions in steel, which has always been a major challenge in steelmaking production. In the "BOF→LF→CC" production process, LF refining feeding line is an important refining process that plays a very important role in improving the purity of molten steel and reducing post-rolling heavy skin and inclusion waste products. The main purpose of calcium treatment in the refining feeding line process is to transform the high melting point Al2O3 inclusions produced by aluminum deoxidation into low melting point, low density calcium aluminate inclusions (such as C12A7), while reducing the number of sulfide inclusions, changing their composition and properties, and improving the cleanliness of molten steel.

　　The principle and characteristics of calcium treatment for molten steel involve the modification of inclusions in clean molten steel by metallic calcium, changing the composition of molten steel, which is a common process in the smelting process.

　　Used for steelmaking, it can purify molten steel, change the form of impurities, and improve the castability and mechanical properties of molten steel. It increases the absorption rate of calcium and reduces steelmaking costs, with significant economic effects.

　　Moreover, in the actual operation process, using seamless pure calcium wire can greatly avoid the problems of wire jamming and breaking, increasing production efficiency, while also preventing uneven feeding of calcium wire, which causes inconsistent product quality.