溶銑の同時脱珪脱りん反応におよぼす酸素供給速度の影響
1992 年 78 巻 11 号 p. 1690-1696
詳細
1992 年 78 巻 11 号 p. 1690-1696
Removals of silicon and phosphorus from hot metal with lime based flux simultaneously have been studied in the experiment of 100 kg scale.
Results obtained in this work are as follow:(1) Silicon content of hot metal at which simultaneous removal of silicon and phosphorus can proceed increases with an increase of feeding rate of oxygen. (2) When oxygen feeding rate is more than 0.88 Nm3/min·t, dephosphorization can proceed even if with low basicity slag like CaO/SiO2 of 2. (3) To proceed simultaneous removal of silicon and phosphorus effectively, it is very important to keep high values of oxygen feeding rate and oxygen potential at slag-metal interface.
Oxygen feeding to top slag is specially effective for increasing an oxygen potential of slag-metal interface.
