PURPOSE:To provide a process for production of the low-S, low-P molten iron by controlling the concn. of T. Fe in slag in a refining method for melting a large amt. of cold iron sources while adding a carbonaceous material into the molten iron in a refining vessel. CONSTITUTION:This process for production of the low-P, low-S molten iron consists in combining a process for ending the melting and reducing in the stage in which the iron oxide-component in the slag is =2% and discharging only the slag in the refining vessel at the point of this time, and a process for ending the melting and reducing of the above-mentioned cold iron sources in the stage in which the iron oxide-component in the slag is =5% and discharging only the molten iron in the refining vessel at the point of this time in the refining method for dissolving and reducing the large amt. of the cold iron sources while adding the carbonaceous material as a heat source into the molten iron in the refining vessel. The effect of producing the low-S, low-P molten iron while preventing the migration of the S and P in the carbonaceous material into the molten iron by the inexpensive method and improving the yield of the iron-component is obtd. in this way.
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