BLOWING METHOD OF CONVERTER

• Main Authors: INOUE TADAHIRO, ICHIKAWA AKIRA, KAWANAMI SHUNICHI, SUZUKI NORIHIKO, ISOGAWA TORU, NISHIGORI MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 15.06.2017
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

PROBLEM TO BE SOLVED: To reduce charge weight of lime in blowing of a converter while satisfying a required quality.SOLUTION: In a blowing method of a converter manufacturing molten steel from molten iron, a quantity of CaO charged to the converter in the next charge is determined by using constituent concentration of remaining slug calculated from at least one or more of the quantity of the remaining slug remained in the pre-charge and brought to the next charge and blowing experience data in the pre-charge.SELECTED DRAWING: None 【課題】転炉の吹錬において、要求される品質を満たしつつ石灰の装入量を少なくする。【解決手段】溶銑から溶鋼を製造する転炉の吹錬方法において、前チャージにおいて残留して次チャージに持ち込まれる残留スラグの量と、前チャージにおける吹錬実績データの少なくとも１つ以上を用いて算出された前記残留スラグの成分濃度とを用いて、次チャージで転炉に装入するＣａＯの量を決定することを特徴とする。【選択図】なし