摘要
生球质量的好坏是直接关系到企业是否顺利生产高质量熔剂性球团的前提。为探明SiO2、碱度及MgO含量对生球性能的影响规律,以唐钢生产所用3种磁铁矿为原料,通过添加生石灰调节碱度,添加白云石调节MgO含量,配比3种铁矿粉调节SiO2含量,进行了造球及生球冷态性能的试验。研究发现,无论是改变SiO2、碱度还是MgO含量,其生球适宜水分基本都保持在8%~9%(质量分数)之间。生球的成球率维持在90%以上,成球率良好。生球的抗压强度、落下强度的大小以及爆裂温度的高低,主要受铁矿粉及熔剂的粒度组成、物理性能以及生球适宜水分大小的影响。
The quality of green pellet is directly related to the production of high-quality fluxing pellets. In order to find out the effect of SiO2, basicity and MgO content on the performance of green pellets, the experiments of pelletizing and cold performance of green pellets were carried out with three kinds of magnetite as raw materials, by adding quicklime to adjust basicity, adding dolomite to adjust MgO content and proportioning three kinds of iron ore powder to adjust SiO2 content. It is found that regardless of changing SiO2 content, alkalinity or MgO content, the suitable moisture for green pellet is basically maintained between 8 mass% and 9 mass%. The pelleting degree of green pellet is above 90%, and pelleting deg is good. The compressive strength, dropping strength and bursting temperature of green pellets are mainly affected by the particle size, physical properties and suitable moisture content of iron ore powder and flux.
作者
王晓磊
师学峰
胡长庆
王新东
胡启辰
WANG Xiao-lei;SHI Xue-feng;HU Chang-qing;WANG Xin-dong;HU Qi-chen(School of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063000,Hebei,China;Iron and Steel Technology Research In stitute,Hegang Group Co.,Ltd.,Tangshan 063000,Hebei,China)
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2020年第3期212-219,共8页
Journal of Iron and Steel Research
基金
国家重点研发计划资助项目(2017YFC0210600)。
关键词
熔剂性球团
抗压强度
落下强度
爆裂温度
适宜水分
flux pellet
compressive strength
dropping strength
bursting temperature
suitable moisture content