摘要
以白云鄂博铁铌共生矿为原料,采用糖浆作为粘结剂,通过压制成型的方法进行了铁铌共生矿含碳球团研究,并探讨了各种因素对球团强度的影响。得出的最佳工艺条件是:碳氧比为1.0、成型压力为15 MPa、糖浆浓度为3.0%及100℃烘干。在此条件下,干、湿球抗压强度分别为37 N/P和25.6 N/P,落下强度分别为3.8次/P和14次/P,基本满足转底炉直接还原工艺对球团强度的要求。
Taking Fe-Nb associated ores as raw materials and using syrup as a binder, the shaping technology of carbonbearing pellet of Fe-Nb associated ores was studied, and the influencing factors on the compressive strength of pellets were investigated. The results show that the optimal conditions of shaping technology are as follows： the briquetting pressure is 15 M Pa, the ratio of carbon to oxygen is 1.0, the concentration of syrup is 3 % and the roasted temperature is 100 ℃. Under such conditions, the compressive strength of wet green balls and roasted pellets is 25.6N/P and 37 N/P respectively, and the shatter strength of green balls and roasted pellets is 14 times/P and 3.8 times/P respectively, basically meeting the requirements of direct reduction process of rotary hearth furnace for pellet strength.
出处
《烧结球团》
北大核心
2012年第1期42-45,共4页
Sintering and Pelletizing
基金
国家十一五科技支撑项目(2008BAB32B07)
国家自然科学基金项目(50964011)
关键词
内配碳
铁铌共生矿
冷固结球团
强度
internal carbon
associated ores of Fe- Nb
cold bound pellet
strength
