摘要
为更加全面地指导高炉生产,并确定宣钢低钛烧结矿适合的烧结参数。利用荷重软化试验装置研究了低钛烧结矿的碱度、Mg O含量、Si O_2含量及烧结混合料的配碳量、含水量对炉料荷重软化性能的影响。结果表明:在现有的烧结参数下,混合料的配碳量对炉料软化温度影响不明显。随着碱度的升高,低钛烧结矿的软化温度升高,当R=2.10时炉料的软化温度达到最大值;当R>2.10以后,软化温度不增反降。所以在一定碱度范围内存在一个荷重软化性能最优的碱度最佳值。随着Mg O含量的增加,软化温度区间变窄,压差降低,透气性增强,软熔带下移;从这点来讲,增加入炉原料的Mg O含量对宣钢高炉顺行是有利的。随Si O_2含量的升高,荷重软化性能变差,所以可适当降低入炉原料的Si O_2含量来改善低钛烧结矿的荷重软化性能。随混合料中含水量的升高,T_(10%)、T_(40%)呈升高趋势,ΔT也呈升高趋势。
In order to provide a more comprehensive guide to sinter production and to determine the appropriate parameters of low sintering titanium sinter in Xuanhua Steel,the impact of basicity,carbon content,MgO content,SiO2 content,moisture on burden load softening properties had been investigated by RUL test device. The results showed that at a given sintering parameters,the effect of carbon content on the softening temperature is not obvious. As the alkalinity increases,the softening temperature of the sinter increases. When R = 2. 10,the softening temperature of the sinter reached the maximum; When R 2. 10,softening temperature decreased with R. There is an appropriate alkalinity for optimal load softening properties within a certain range of alkalinity. With the increase of MgO content,the softening temperature range is narrowed,breathability enhanced,softening zone moved downward. From this point,increasing the MgO content of the raw material is favor for smooth operation of blast furnace. With increasing SiO2 content,RUL performance deteriorated,therefore,it can be appropriate to reduce the load softening SiO2 content to improve the performance of Xuanhua Steel sinter. With the increase of water content,T10% and T40% showed an increasing trend,ΔT substantially increased.
出处
《钢铁钒钛》
CAS
北大核心
2016年第1期90-94,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金重点支持联合项目(U1360205)
关键词
高炉
低钛烧结矿
烧结
荷重软化性能
顺行
blast furnace
titanium sinter
sintering
properties of refractoriness under load
smooth operation
