Ferroalloys are used as nucleating agents for steelmaking in the casting industry. One of the measures to change the performance of cast iron and cast steel is to change the solidification conditions of the casting. In order to change the solidification conditions, certain iron alloys are often added as crystal nuclei before casting, forming grain centers, making the formed graphite fine and dispersed, and refining the grains, thereby upgrading the performance of the casting. Ferroalloys can also be selected as reducing agents for steelmaking, silicon alloys can be used as reducing agents for producing other ferroalloys such as ferromolybdenum and ferrovanadium, and silicon chromium alloys and manganese silicon alloys can be used as reducing agents for medium to low carbon ferromanganese production. In the non-ferrous metallurgical and chemical industries, ferroalloys are also increasingly widely chosen, for example, medium and low carbon ferromanganese is used for making welding electrodes; Chromium iron is used as an anode material for the production of chromides and chromium plating, and some iron alloys are used for the production of high-temperature resistant materials.