Method for producing industrial pure iron

The invention relates to a method for producing industrial pure iron, which comprises the following steps: converter primary smelting: carrying out primary smelting in a converter to convert molten iron to molten steel; ladle deoxidation: tapping off the molten steel into a ladle from the converter, and adding aluminum to the ladle to enable the oxygen content of the molten steel to be more than 0.04-0.06wt%; heating deoxidation: heating the molten steel subject to the ladle deoxidation to 1620-1660 DEG C, and adding aluminum to the ladle to enable the oxygen content of the molten steel to be0.03-0.04wt%; and vacuum degasification: degassing the molten steel subject to the heating deoxidation in vacuum until the carbon content of the molten steel is below 0.03wt%, and then adding aluminum to enable the acid-soluble aluminum content of the molten steel to be 0.02-0.05wt%. By using the method, more than 120 tons of industrial pure iron can be produced in every batch, and the carbon content of the produced indus