The particle size of ferrosilicon is uniform, no fine powder, the inoculation effect is relatively stable; The inoculation effect of ferrosilicon is stronger than that of ordinary ferrosilicon, and the tendency to produce slag is small. Prolong die life and reduce surface defects; Reduce the pinhole, improve the surface quality of the cast pipe, remove the microporosity, and improve the performance of casting processing. It is mainly used as deoxidizer and alloying agent in steelmaking industry. It is also used as a inoculant and a spheroidizing agent in the cast iron industry. Cast iron is an important metal material in modern industry, it is much cheaper than steel, easy to melt smelting, has excellent casting performance and much better than steel earthquake resistance.