Abstract: In order to solve problems of the great fluctuation of hot metal composition, the difficulty on steady-state control during steelmaking and the standardization for steelmaking operation, the slag adjusting process with a slag conditioner was introduced into converter steelmaking. The practice results showed that there were no splashing, no drying and no lance sticking during steelmaking by the slag adjusting process. The slag consumption reduced by 9.3 kg/t, and the metal loss reduced from 11.60 % to 10.01 %. The smelting was smooth during steelmaking and the cost was reduced.

Key words: converter, steelmaking process, slag conditioner, technical and economic index