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250t 溶鋼用の噴流攪拌式取鍋精錬法(PM-Process)の設備概要と精錬特性

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.17 (1985) No.1

250t 溶鋼用の噴流攪拌式取鍋精錬法(PM-Process)の設備概要と精錬特性

Performance of Ladle Refining of BOF Melt by a 250 t Pulsating Mixing Process

住田 則夫(Norio Sumita) 小口 征男(Yukio Oguchi) 藤井 徹也(Tetsuya Fujii) 江見 俊彦(Toshihiko Emi) 上田 新(Arata Ueda) 今井 卓郎(Takuro Imai)

要旨 : 噴流式攪拌による取鍋精錬法(PM process)の 250 t 規模装置の設備概要と工程生産ライン での実験結果について述べた。PM 法は取鍋内溶鋼の温度と成分の均一化に加え,脱酸能力 とで合金成分調製能力において RH 法や DH 法など真空脱ガス装置と同等の能力のあるこ と,および,処理中の溶鋼の温度降下量がRH 法の 75%に低減可能である。本法は操業費 用と設備費用においても,RH 法などの真空脱ガス法と比較してはるかに低額であり,当初 の開発目標どおりの優れた取鍋精錬装置であることが明らかとなった。 Synopsis :

Mass production test for the 250-t PM process was carried out on the commercial production line and the following results were obtained: (1) Stirring intensity of the melt is equal to or better than that of the RH degassing process. (2) The rate of deoxidation and yield of alloying elements are excellent, equivalent to those of the RH process. (3) The operation cost is one eighth that of the RH process (4) The investment cost also is cheap and estimated to be one-fifth to one-tenth that of the RH process

(c)JFE Steel Corporation, 2003

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