Method for desulfurizing molten iron

• Main Authors: LIU MIN, DIAO HUA, ZHU LIDONG, WEI SHANGHAO, ZHANG HAIHUA, ZHANG LINGYI, ZHANG YUEMING, ZHANG DEGUO, LUO SHUNYUN, WANG DONG, HU XIANTANG, WANG GUOLIAN, YAN ZHANHUI, LIU YANQIANG
• Format: Patent
• Language: Chinese; English
• Published: 20.01.2023
• 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 embodiment of the invention provides a molten iron desulfurization method, the method is used for a KR desulfurization treatment line, the method is realized through a slag adding device, the slag adding device comprises a transportation device and a dumping device, and the transportation device and the dumping device are both located in the KR desulfurization treatment line. The method comprises the following steps: transporting the desulfurization slag of the previous ladle of molten iron to the dumping equipment through the transportation equipment, wherein the desulfurization slag is the residual slag generated after the molten iron is subjected to desulfurization treatment; transporting molten iron to be subjected to desulfurization reaction to the dumping equipment; the first weight of the desulfurization slag of the previous ladle of molten iron is obtained at the dumping equipment, and then the desulfurization slag of the previous ladle of molten iron is added into the molten iron to be subjected