降低高钛型钒钛精矿烧结返矿率实践

PRACTICE OF REDUCING THE RATE OF RETURNED SINTERING FINES OF HIGH-TITANIUM TYPE VANADIUM AND TITANIUM CONCENTRATES

针对高钛型钒钛磁铁精矿的原料特点,通过工艺参数优化、烧结矿成分的合理控制,成品矿运输及筛分系统采用花格子衬板与阶梯漏子,降低皮带转速,高炉沟下筛增加缓冲溢流溜槽,缩小筛孔孔径,高炉回收使用小粒级烧结矿等技术措施,在物料条件变差状况下,实现了降低高钛型钒钛精矿烧结的返矿比例,对优化高炉炉料结构发挥了极大的作用。

According to the raw material characteristics of high-titanium type vanadium-titanium magne-tite concentrates , such technical measures are taken as optimizing the process parameters , reasonably controlling the contents of sintering ore , using plaid lining and ladder funnel in finished ore transporting and screening system , lowering belt speed , adding b buffer overflow chutes for BF ditch screen , narro-wing sieve aperture , reusing the particle-grade sintering ore from BF , the rate of returned sintering fines of high-titanium type vanadium and titanium concentrates is reduced , and a great role in optimizing the ore structure of BF has been played under deteriorated material condition .