溶銑の脱りん挙動におよぼすインジェクションガスの影響

概要

論文の詳細を見る
Recently, it is clarified that dephosphorization of hot metal by lime injection with oxygen is more effective than usual dephosphorization with nitrogen. Then the authors made dephosphorization tests by lime injection to compare two kinds of injection gas (N_2 and O_2), and discussed the dephosphorization reaction on each condition. As a result, following items were clarified. The rate of dephosphorization by lime injection is mainly dependent on oxygen feeding rate and slagging rate of lime. So the rate of dephosphorization by O_2 injection is larger than that by N_2 injection. Therefore, it is desirable to adopt a lime injection with O_2 gas to increase the reaction rate and to decrease the consumption of lime. Then, it becomes a subject of discussion that decarburization is accelerated by O_2 injection. However, it is possible by use of mixed gas of N_2 and O_2 to control the decarbuization rate and dephosphorization rate to a certain extent.
社団法人日本鉄鋼協会の論文
1985-07-01