不同普通铁精粉配比的含钛烧结矿矿相结构研究

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Influence of Ordinary Ore Blending Ratio on Texture of Titanium Sinter

1. College of Mining Engineering, Hebei United University, Tangshan 063009, Hebei, China;
2. Mining Development and Safety Technology Key Lab of Hebei Province, Tangshan 063009, Hebei, China;
3. Qian'an College, Hebei United University, Qi'an 064400, Hebei, China

摘要: 针对承钢含钛烧结矿存在的强度差、低温还原粉化严重等实际问题,在实验室进行了不同普通铁精粉配比含钛烧结矿矿相结构的研究。结果表明:烧结原料中随普通铁精粉配比的增加,含钛烧结矿中金属相含量明显降低,而黏结相含量增加,其中钙钛矿含量降低,铁酸钙含量明显升高;显微结构逐渐均匀化,由粒状结构过渡到熔蚀结构,骸晶状钛赤铁矿含量降低;对应的烧结矿强度及低温还原粉化性能得到进一步改善。
- 含钛烧结矿 /
- 普通铁精粉 /
- 矿物组成 /
- 显微结构
Abstract: The effect of ordinary ore blending ratio on texture of sinter containing titanium was investigated in order to address the problems of low strength and poor low temperature reduction degradation index for sinter in Chengde Iron and Steel Company.The results show increasing percentage of blending ordinary ore leads to reduction in metal phase,and increase in binder phase.Consequently,the content of perovskite reduces and the content of calcium ferrite increases.The texture becomes uniform gradually and turned from granular into melting corrosion structure,the content of skeleton hematite reduce.The drum strength and RDI of resulted sinter are improved.
- sinter /
- ordinary ore /
- composition /
- microstructure