酸素上吹転炉における酸化反応の考察
1968 年 54 巻 4 号 p. 381-392
詳細
1968 年 54 巻 4 号 p. 381-392
The authors investigated the mechanism of oxidizing reaction in the 160 t oxygen top blowing converter, and discussed on the differrence of the mechanism of oxidizing reaction between open hearth furnace and oxygen converter. The conclusions obtained are summarized as follows;
1. The direct oxidizing reactions take place between oxygen gas and carbon, manganese and phosphorus in steel at the fire point where oxygen gas contacts directly with molten steel, and the oxidizing reactions do not take place between ferrous oxide in slag and carbon, manganese, and phos-phorus in steel at the interface of slag-metal.
2. The excess oxygen (ΔO) is determined by the composition of CO and CO2 in evolution gas at fire point without by ferrous oxide in slag.
3. Phosphorus in steel is oxidized by blowing oxygen without by ferrous oxide, and ferrous oxide participates in the rephosphorization reaction which is the most important reaction at the dephosphorization.
4. The difference of desulfurization reaction between at the last blowing period of low carbon steel and at the first blowing period of high carbon steel was proved.
