首钢京唐高炉煤粉粒级优化试验研究  

Research on Optimizing the Pulverized Coal Particle Size in Shougang Jingtang's BF

作　　者：张贺顺[1] 郭艳永[1] 阎铁峰 郭之明[1] 吴铿[2] 杜瑞岭[2] 

机构地区：[1]首钢京唐钢铁联合有限责任公司 [2]北京科技大学

出　　处：《炼铁》2016年第5期13-17,共5页Ironmaking

基　　金：国家自然科学基金资助项目(项目批准号:51274026)

摘　　要：对首钢京唐1号高炉喷吹煤粉的粒度组成和不同粒度煤粉燃烧特性进行了研究,并在京唐1号高炉进行放宽煤粉粒径的工业试验。结果表明,在高炉生产保持稳定和顺行,原燃料条件基本不变的条件下,放宽煤粉粒径后磨煤机生产能力增加10%左右,高炉内煤粉利用率基本上没有大的变化。认为在进行烟煤和无烟煤混合喷吹的条件下,完全可以降低小于75μm煤粉的比例,不必按传统的做法将该比例控制在80%左右。Size composition and combustion characteristic of different sizes of pulverized coal injected into Shougang Jing- tang＇s No. 1 BF are analyzed, followed by industrial test of properly releasing the pulverized coal particle size limitation. It is proved that under the conditions of the raw material and fuel basically unchanged, smooth and stable running of BF operation, the utilization of pulverized coal in BF does not change greatly when the limitation to pulverized coal particle size is appropriately liberated, instead, the production capacity of coal mill can increase by around 10%. The author points out that the proportion of pulverized coal with size less than 75μm can be decreased without necessity of keeping it at about 80% as conventionally under the precondition of mixed injection of bituminous coal and anthracite.

关 键 词：煤粉粒度 高炉喷煤 煤粉利用率 燃烧特性 

分 类 号：TF538.63[冶金工程—钢铁冶金]