| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for pretreatment of low grade scrap by which, when using low grade scrap containing organic matters in the scrap as a main charging raw material for a steelmaking furnace, flame initiation at steelmaking furnace charging can be prevented and the organic matters contained in the scrap can be reused as a resource and treatment can be carried out inexpensively. <P>SOLUTION: This invention relates to a method for pretreating, before charging, the scrap to be charged into a steelmaking furnace and characterized in that the scrap is heated using superheated steam to melt or pyrolyze the organic matter contained in the scrap. It is preferable that the temperature of the superheated steam is 300 to 800°C. A melt or pyrolysis gas, resulting from the melting or pyrolysis of the organic matter, is separated from the scrap. It is preferable that the superheated steam is produced by using steam generated from dust collecting equipment for exhaust gas from a steelmaking furnace and further heating it. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
