Silicon sphere deoxidizers can be used for deoxidation and temperature increase in steelmaking. This dataset includes major raw materials, auxiliary materials, and energy used in the production process, but infrastructure such as production equipment and factory construction is not included within the system boundary of the dataset. The life cycle inventory is compiled from data obtained from multiple sources. The production process of silicon sphere deoxidizers includes preliminary mixing of silicon carbide powder, preliminary mixing of silicon powder, mixing, forming, and packaging.