【摘要】 对邯钢近四年的烧结矿低温还原粉化指标(RDI_{+3. 15})与相对应的化学成分、碱度和配矿结构等进行数据统计分析和研究,得出烧结矿的RDI_{+3. 15}与FeO、R₂有较强的对应关系,精粉配比的增加可以改善烧结矿的低温还原粉化性能。通过对烧结矿低温还原粉化试验前后的显微组织进行分析,发现烧结矿经过低温还原后产生裂纹粉化的区域与赤铁矿关系密切,但不同形态的赤铁矿产生裂纹的程度不同,尤其是骸形晶赤铁矿裂纹纵横交错,严重影响烧结矿的粉化指标。更多还原

【Abstract】 In this paper,sinter low-temperature reduction powder index( RDI_{+3. 15}) and corresponding chemical components,basicity,blending structure are analysed by data statistical and studied in past four years of Hansteel. The esults show that RDI_{+3. 15} of sinter has corresponding relationship with FeO and R₂.,increase of iron powder proportion can improve sinter RDI. Through microscopic identification for samples before and after sinter RDI test,it is found that after sinter RDI test,samples come cracks,which is related to hematite,different modality hematite has different degree cracks,especially skeletal hematite,there are many cracks,that serious influence sinter RDI.更多还原