唐钢带式焙烧机熔剂性球团矿生产实践  

PRODUCTION PRACTICE OF FLUXED PELLET ORE IN BELT SINTERING MACHINE OF TANGSTEEL

作　　者：王聪渊 张洪海 李炜玺 张建军 陈永星 袁雪涛 顾亚楠 Wang Congyuan;Zhang Honghai;Li Weixi;Zhang Jianjun;Chen Yongxing;Yuan Xuetao;Gu Yanan(HBIS Group Tangsteel Company)

机构地区：[1]河钢集团唐钢公司

出　　处：《河南冶金》2023年第5期36-40,共5页Henan Metallurgy

摘　　要：为适应高炉高比例球团冶炼的需求,从2021年初开始唐钢新区使用带式焙烧机生产熔剂性球团。通过改造消石灰配给设备,改变除尘灰配加方式,增加细粒铁精粉配比,降低抽干段、预热段以及焙烧段的温度,严格控制熔剂性球团矿SiO_(2)不超过3.5%及TiO_(2)含量不超过0.5%等技术措施,使得熔剂性球团矿化学成分稳定性得到明显改善,低温还原粉化RDI+6.3指标由70%左右提高到93%左右,为高炉实现35%熔剂性球团配比下的长周期稳定顺行提供了保障。To meet the requirements of a high proportion of fluxed pellets in blast furnace smelting,belt sintering machines are used to produce fluxed pellets in Tangsteel New District since early 2021.By renovating the lime distribution equipment,changing the dusting ash mixing method,increasing the proportion of fine iron concentrate,lowering the temperatures in the drying section,preheating section,and sintering section,and strictly controlling the chemical composition of fluxed pellets,such as Si0_(2) not exceeding 3.5%and Ti0_(2) content not exceeding 0.5%,the stability of the chemical composition of fluxed pellets is significantly improved.The low-temperature reduction disintegration index RDI+6.3 is increased from around 70% to around 93%,providing assurance for long-term stable operation with up to 35% fluxed pellet ratio in the blast furnace.

关 键 词：带式焙烧机 熔剂性球团 生产实践 低温还原粉化 

分 类 号：TF046.6[冶金工程—冶金物理化学]