Baosteel's Zhanjiang Iron and Steel Refining started automatic production with launch of No 3 RH processor on 26 September, marking the successful launch of the first domestic fully automatic and fully modeled production system for refining RH, reaching the world's First-class RH intelligent refining level.Refining RH in a traditional steelmaking plant requires three operators: the main operator, the central operator, and the platform operator. The operations are frequent and require high concentration of operators. Zhanjiang Steelmaking Plant has pioneered the fully automated and fully modeled operation of refining RH. Starting from the production requirements of the steel grade structure in the No. 3 RH process, the model framework and model thinking were built, and a temperature model suitable for the production of all steel grades was developed. The casting cycle and pouring time accurately give the target temperature at the end of refining, and automatically calculate the amount of oxygen blowing and the amount of cold material added to achieve intelligent temperature control. Through big data analysis and repeated production verification, the team members finally successfully overcome the problem of automatic ladle lifting, realized unmanned ladle lifting, and completed the full automation and full model coverage of the entire processing cycle of the No 3 RH process.