予備処理溶銑を用いたクロム系ステンレス鋼の溶製(処理溶銑の活用)(<特集>溶銑処理の発展)

概要

論文の詳細を見る
K-BOP, one of combined blowing processes, is favorable for refining stainless steel by diluting gas practice because of its inherent advantage of preferential carbon oxidation suppressing excessive chromiun oxidation. In K-BOP, application of dephosphorized hot metal to production of stainless steel can realize energy saving. One of the application technique is a duplex process in which crude molten metal is produced by mixing dephosphorized hot metal with optimum chromium bearing molten steel from electric melting furnace (EF). This crude molten metal has higher heat energy i.e. sensible heat and heat of oxidation of C, Si, Mn, Cr than that from overall EF practice. Consequently it is possible to refine stainless steel at higher temperature and this leads to the benefits of higher chromium yield. The other technique is "Hot Metal Process" in which dephosphorized hot metal are decarburized and all ferro alloys must be charged in converter. Consequently input heat energy is not enough to raise temperature of molten steel to aim point. For the compensation of the shortage of heat, the use of small size coke which is surplus and cheap material in works is found to be beneficial. To countermeasure the sulfur pick up by coke addition, K-BOP practice is associated with remarkable gaseous desulfurization and slag/metal desulfurization reaction. In "Hot Metal Process" production cost is decreased by 3.4% due to saving electric power for EF
社団法人日本鉄鋼協会の論文
1983-11-01

予備処理溶銑を用いたクロム系ステンレス鋼の溶製(処理溶銑の活用)(<特集>溶銑処理の発展)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク