近年来,我国电炉钢的产量不断增加,废钢供应日益紧张,质量也日趋下降,选用合理的废钢代用品是发展我国短流程的一项迫切任务。常用的废钢代用品有海绵铁、碳化铁(Fe_3C)和脱碳粒铁等。由于海绵铁含铁量高、含硫量低等优点,近几年在北美等地区有 In recent years, the output of EAF steel has been increasing, the supply of scrap steel has been increasingly tense and the quality has been declining. The selection of reasonable scrap substitutes is an urgent task for the development of China’s short process. Common scrap substitutes are sponge iron, iron carbide (Fe_3C) and decarburization iron and so on. As sponge iron high iron content, low sulfur, etc., in recent years in North America and other regions