Abstract
Phosphorus and manganese content control technologies in Basic Oxygen Furnace (BOF) are focused to materialize the accurate refining control. The feature of three technologies conducted at Sakai steelmaking shop are discussed.
(1) Phosphorus and manganese content control method based on the analysis of off-gas data
(2) Expert system for BOF refining control
(3) Real time manganese determinating technology
Taking account of labor saving, the refining control technologies of BOF should be more accurate and quick in near future. New technologies should analyse properties and compositions of slag and metal in real time and continuously, and control their metallurgical and physical conditions by the proper devices.
