Method for reprocessing and utilizing oxide scale

• Main Authors: XU XIAOLU, LI XIAOWEI, XUE BIN, LI XIAOBO, ZHU CHUNYAO, NIE WENJIN, WANG YIPING, GONG YAN, ZHANG HUAZHEN, ZHAO JIAQI
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a method for reprocessing and utilizing oxide scales, which comprises the following steps: S1, heap filtering, screening and drying: removing moisture from the oxide scales in a heap filtering manner, then screening to remove impurities, and then drying until the moisture content is less than or equal to 4%; s2, burdening and stirring: mixing the dried iron oxide scale with a ball pressing auxiliary material to obtain a mixture, and then performing stirring treatment; s3, ball pressing is conducted, specifically, the mixture stirred in the step S2 is moved into a ball pressing machine to be subjected to ball pressing, a spherical material is obtained, the roll gap of the ball pressing machine is 3-4 mm, and the feeding speed is 38-42 t/h; and S4, discharging through a bar screen: discharging the spherical material obtained in the step S3 through the bar screen, and then stacking for aging treatment until the water content is less than 3%. According to the iron oxide scale reprocessing t