JFE钢铁公司成功开发出一种烧结用原料新的制粒工艺。该工艺是将焦粉和石灰石包覆在制粒颗粒外表面,将铁矿石和石灰石的熔融反应控制在适当范围内。基础研究和工业试验的结果确认了通过改善制粒性和熔液流动性,提高了烧结生产率,以及由于矿石微细气孔增加,烧结矿还原性提高。用 JFE Steel has successfully developed a new pelleting process for sintering raw materials. The process is to coke powder and limestone coated on the outer surface of the granulation particles, iron ore and limestone melting reaction within the appropriate range. The results of basic research and industrial tests confirmed that the sintering productivity was improved by improving the granulation property and melt fluidity and that the reduction of the sinter was improved due to the increase of fine pores of the ore. use