摘要
某企业2680 m^(3)高炉炉料结构为“75%高碱度厂烧+7%酸性外球+18%天然块矿”,为了降低高炉原料成本,选取不同非主流块矿与当前高炉使用的主流P块、N块进行了多种冶金性能检测,结果证明R块相较于P块、N块,矿石结构紧密,具有较好的抗热裂性能,同时还兼顾较高的还原性能。综合炉料的熔滴特性表明,配加R块后,料柱的软融区间降低25℃,但由于R块高铝的属性,导致渣系中极易形成高熔点渣相,降低炉渣流动性,料柱最大压差ΔP_(max)增加4.6 kPa。实际生产中,2680 m^(3)高炉配加R块后,仍可以实现稳产顺行并取得了较好的经济效益。
The blast furnace(BF) burden charge of 2 680 m^(3)BF was "75% high basicity sinter +7% abroad acid pellets +18% lump ores".To reduce the cost of BF process,a series of tests for metallurgical properties were carried out among a few non-mainstream ores and mainstream ores such as P ores and N ores.The result indicated that the R ores were more compact than P ores and N ores which led better thermal resistance performance and maintained a certain degree of reduction performance.The droplet property test indicated that the soft zone could be decreased about 25 ℃ with R ores and the high melting point phases were easily formed in slag system due to higher Al_(2)O_(3)content in R ores which led to the decrease of the slag fluidity,as the result,the column permeability increased about 4.6 kPa.In actual BF production,the BF process could be stable and smooth with substantial economic benefits after the addition of R ores in 2 680 m^(3)blast furnace.
作者
邸航
杜屏
王永红
张国良
DI Hang;DU Ping;WANG Yong-hong;ZHANG Guo-liang(Institute of Research of Iron and Steel,Shasteel,Zhangjiagang 215625,Jiangsu,China;Ironmaking Plant,Shasteel,Zhangjiagang 215600,Jiangsu,China)
出处
《中国冶金》
CAS
北大核心
2022年第3期68-72,共5页
China Metallurgy
关键词
炉料结构
高炉
冶金性能
稳产
降本
burden charged
blast furnace
metallurgical property
yield stability
cost reduction
