Control method of oxygen content in smelting steel water

• Main Authors: ZHANG YUANQIANG, LI YONG, XU BO, ZHANG ZHENSHEN, GUO YONGQIAN, LI NA, SONG LIWEI, TIAN YUNSHENG, HUANG ZHONG, CHEN YINZE, SUN BIN, XU DANGWEI, ZHAO LIANGSHENG, WU YUPU, LI ZHIGUANG
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2020
• 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 belongs to the technical field of steel and iron metallurgy, in particular to a control method of an oxygen content in smelting steel water. The control method comprises the steps that:quantitative ferrosilicon alloy and metal manganese are fed in a furnace rear steel ladle according to an oxygen content in converter steel water and the target component alloy element content requirement; a lime slagging agent is fed in the steel ladle after tapping is finished; the LF station-arrived temperature is above 1560 DEG C; and the oxygen content can be controlled within 30-50 ppm afterthe steel water is fed in a LF refining furnace. The control method can precisely control the oxygen content in the steel water so as to enable the steel to have quantitative endogenous inclusions. 本发明属于钢铁冶金技术领域，具体为一种熔炼钢水中氧含量的控制方法。该控制方法根据转炉钢水中的氧含量和目标成分合金元素含量要求，在炉后钢包加入定量硅铁合金和金属锰，出完钢后钢包加入石灰造渣剂，LF到站温度在1560℃以上，钢水进入LF精炼炉后可控制氧含量在30~50ppm之间。该控制方法能够精准控制钢水中的氧含量，使钢中有定量的内生夹杂物。