METHOD FOR MANUFACTURING SINTERED ORE

• Main Authors: HARA KYOSUKE, KINOSHITA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 17.06.2022
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

To provide a new and improved method for manufacturing a sintered ore which predicts both cold strength and reducibility of a sintered ore by a single measurement method, and can manufacture a sintered ore excellent in both the cold strength and the reducibility using the result.MEANS FOR SOLVING THE PROBLEM: A method for manufacturing a sintered ore includes: a step of manufacturing a sintered ore; a step of measuring a surface recess volume of the manufactured sintered ore; and a step of adjusting at least one or more of an amount of an aggregation material to be blended, an amount of a limestone to be blended, and a production rate of a sintered ore so that the measured surface recess volume is within a range of 1,000 to 1,300 μm3/μm2.SELECTED DRAWING: Figure 1 【課題】単一の測定法で、焼結鉱の冷間強度及び被還元性の両方の予測し、その結果を用いて冷間強度及び被還元性の両方が優れた焼結鉱を製造することが可能な、新規かつ改良された焼結鉱の製造方法を提供する。【課題手段】上記課題を解決するために、本発明のある観点によれば、焼結鉱を製造する工程と、製造された焼結鉱の表面凹部体積を測定する工程と、測定された前記表面凹部体積が１０００～１３００μｍ３／μｍ２の範囲内の値となるように、凝結材の配合量、石灰石の配合量、及び焼結鉱の生産率のうち少なくとも１種以上を調整する工程と、を含むことを特徴とする、焼結鉱の製造方法が提供される。【選択図】図１