MANUFACTURING METHOD OF SINTERED ORE

• Main Authors: HIGUCHI TAKAHIDE, YAMAMOTO TETSUYA, MATSUNO EIJU, TAKEHARA KENTA, IWAMI TOMOJI
• Format: Patent
• Language: English; Japanese
• Published: 18.04.2019
• 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 establish a technology for enhancing strength and reduction degradation property of a sintered ore by using a nitrogen gas or an oxygen rich gas without relaying on increase of airflow nor use of gas fuel.SOLUTION: There is provided a manufacturing method of a sintered ore by blowing a gas from above a sintering raw material injection layer on a sintering machine pallet and/or a sintered ore sedimentary layer on a movement carriage of a sintering cooling device, in which blowing of enrichment oxygen is conducted at a prescribed position together with blowing a nitrogen gas as the gas between a steel plate of the sintering raw material injection layer and a front half of the sintering cooling device.SELECTED DRAWING: Figure 6 【課題】風量の増加や気体燃料の使用に頼ることなく、窒素ガスや酸素富化ガスの利用により、焼結鉱の強度および還元粉化性を向上させるための技術を確立すること。【解決手段】焼結機パレット上の焼結原料装入層および／または焼結冷却装置の移動台車上の焼結鉱堆積層の上方から気体を吹き込む焼結鉱の製造方法において、焼結原料装入層の鋼板から焼結冷却装置の前半までの間に、前記気体として窒素ガスを吹き込むと共に、所定の位置において富化酸素の吹き込みを行なう方法。【選択図】図６