Method for removing silicon in molten iron

• Main Authors: LIU WENPING, WANG JIANRUI, ZHAO SHENGGONG, NING WEI, QIAO MING, REN KESHE, WANG QIANG, WEI YISHENG, WANG YUCHUN, ZHANG ZHAOPING, MIAO JINPENG, ZHANG BAIQING, LIANG JINGYUE
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• 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 pre-desiliconization of molten iron through a KR method and relates to a method for removing silicon in molten iron. The method comprises the step of adding a desiliconization agent to molten iron in a molten iron tank so as to remove silicon in the molten iron while mechanical stirring is carried out, specifically, the silicon content of the molten iron is 0.7-1.2 wt%. By means of the method, the silicon content of the molten iron in a furnace is stabilized, consumption of slag and steel and iron materials of a converter is reduced, and meanwhile, the purposes of reducing converter splashing and low-cost steelmaking are achieved. 种脱除铁水中硅的方法，本发明公开了种KR法铁水预脱硅的方法，包括在机械搅拌的同时，向铁水罐内的铁水中加入脱硅剂脱除铁水内的硅，所述铁水内硅含量为0.7-1.2wt％。本发明稳定了入炉铁水的硅含量，降低了转炉渣料和钢铁料消耗，同时达到了减少转炉喷溅和低成本炼钢的目的。