| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for starting a direct smelting method, with which iron is produced from metal-containing supplied material in a metallurgical type vessel having plural raw material spouting lances/tuyeres. SOLUTION: This method is executed with the following steps, i.e., (a) the vessel is preheated and (b) the molten iron in a vessel 77 is supplied to form the molten material. Further, (c) carboneceous material and flux are supplied into the molten material and oxygen-containing gas is spouted through the lances/tuyeres 11 and gas generated from the carbon, and the molten material is burnt to heat the molten material and slag is produced. Furthermore, (d) while continuing the supply of the carboneceous material and the flux and the spouting of the oxygen-containing gas, the metal-containing material is supplied into the vessel and the metal-containing material is smelted to produce the molten iron.</p> |
