Method for reducing proportion of large-diameter desulfurized slag in molten iron desulfurized slag

• Main Author: HONG JIANGUO
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2022
• Subjects: CHEMISTRY; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The invention discloses a method for reducing the proportion of large-diameter desulfurized slag in molten iron desulfurized slag. The technical problems of high proportion of large-diameter desulfurized slag and low cooling efficiency of molten iron desulfurized slag in the existing molten iron desulfurized slag treatment process are mainly solved. According to the technical scheme, the method for reducing the proportion of the large-diameter desulfurized slag in the molten iron desulfurized slag comprises the following steps that (1), hot-rolled iron scales are added into an empty slag tank of the molten iron desulfurized slag; (2), the molten iron desulfurized slag is poured into the molten iron desulfurized slag tank filled with the hot-rolled iron scales, and the volume of the molten iron desulfurized slag is controlled to be less than or equal to 50% of the volume of the molten iron desulfurized slag tank; (3), digestion treatment is carried out on the molten iron desulfurized slag by using water; (4),