METHOD FOR SURFACE TREATMENT OF DIRECT REDUCED IRON

摘要

PURPOSE: A method for the surface treatment of direct reduced iron by carrying out surface treatment of direct reduced iron under suitable conditions using naphtenic acid is provided, which improves oxidation resistance and corrosion resistance. CONSTITUTION: The titled surface treatment method of direct reduced iron is characterized in that the direct reduced iron is dipped in a naphtenic acid in the range of temperature of 100 to 130deg.C for 2 min or more and dried under inactive gas atmosphere at 70deg.C or less. This method exhibits excellent oxidation resistance and corrosion resistance to corrosion reaction being in progress by contact of water as well as oxidation reaction being in progress by contact of oxidation in the air.