Researches on Vanadium-titanium Magnetite Concentrates by Composite Agglomeration Process
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摘要: 钒钛磁铁精粉具有TiO2含量高、SiO2含量低的特点,用此生产的烧结矿转鼓强度差,低温还原粉化严重。采用铁矿粉复合造块工艺(CAP),进行承德地区钒钛磁铁精粉的烧结试验研究,并与常规烧结工艺进行对比。结果表明,在相同原料配比条件下,实施复合造块工艺后,烧结矿的低温还原粉化指数RDI+3.15提高了5.23%~17.4%,转鼓强度达到55%以上。料层高度由常规烧结的600 mm提高到1 000 mm,在改善钒钛烧结矿低温还原粉化指标的同时,也可提高生产效率。Abstract: Vanadium-titanium magnetite is characterized by high content of TiO2,low content of SiO2 and the resulting sinter is at low tumbler strength and RDI.In this paper a composite agglomeration process(CAP) was investigated and the resulting sinter performance was compared with conventional sintering process,The research indicated that when raw materials proportioning was kept constant,RDI+3.15 increased by 5.23%~17.4%,and the tumbler strength index excessed 55% after the implementation of the composite agglomeration process.Compared with conventional sintering,CAP led to the material bed depth increasing from 600 mm to 1 000 mm improvement of vanadium-titanium sinter RDI+3.15 indicators as well as higher production efficiency.
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Key words:
- vanadium-titanium magnetite concentrates /
- CAP /
- RDI /
- tumbler strength index
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