Production method of ultra-low carbon industrial pure iron bloom

The invention discloses a production method of an ultra-low carbon industrial pure iron bloom. The production method comprises the following steps: S1, BOF smelting, whole-course argon blowing, slagging alkalinity control, red envelope after slag thickening, slag stopping and tapping, and deoxidizing agent and new slag adding; s2, temperature measurement and oxygen determination are conducted on the molten steel, and aluminum wires are added; s3, active lime and a slagging agent are added when a steel ladle enters a station, and aluminum shots are scattered; secondary slagging is conducted according to the slag state color, and active lime and a slagging agent are added; s4, a forced carbon reduction mode is adopted, the vacuum degree, the oxygen flow and the molten steel oxygen activity are controlled, aluminum shots are added, and circulation is conducted after deoxidation; and S5, bloom continuous casting is conducted, casting is protected in the whole process, electromagnetic stirring is conducted in a cr