难烧钒钛磁铁精粉的复合造块研究  

Researches on Vanadium-titanium Magnetite Concentrates by Composite Agglomeration Process

作　　者：万新宇[1] 吕庆[1] 张淑会[1] 孙艳琴[1] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063009

出　　处：《钢铁钒钛》2014年第3期63-68,共6页Iron Steel Vanadium Titanium

基　　金：河北省自然科学基金资助项目(E2013209339)

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。Vanadium-titanium magnetite is characterized by high content of TiO2,low content of SiO2and 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. 15increased 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. 15indicators as well as higher production efficiency.

关 键 词：钒钛磁铁精粉 复合造块 低温还原粉化 转鼓强度 

分 类 号：TF046.4[冶金工程—冶金物理化学]