摘要
通过测定邯钢高炉喷吹煤种的燃烧率,分析了邯钢高炉喷煤利用现状.测定了高炉除尘灰中的碳含量,利用岩相测试技术分析了除尘灰中未燃煤粉和焦炭存在的不同结构形态,并确定了高炉除尘灰中含碳物质的来源.结果表明,邯钢高炉除尘灰中的碳元素含量都比较高.炉尘中的未燃煤粉颗粒可分成微变原煤颗粒、气孔原煤颗粒和残碳颗粒;焦炭颗粒可分成类丝碳、粒状镶嵌结构、流动结构、片状结构、块状结构.结合邯钢高炉目前配煤情况,给出了提高邯钢煤粉燃烧率的有效建议,邯钢高炉混合喷吹的首选用煤为长治煤与大湾煤.
The utilization of coal injection was analyzed by testing the burning rate of coal injected into the BF in HANSTEEL.The carbon content of dust from BF was determined via lithofacies analysis made to differentiate the structure of UPC from that of the coke in dust,thus determining the source of carbon-bearing substances in BF dust.The results showed that the BF dust contains comparatively high carbon content,among which the UPC particles are in three forms：slightly changed coal,porous coal and redidual carbon particles.And the structure of coke particles can be divided into filament-like,granular mosaic,flowing,flake-like and blocky textures.According to what coal is used and mixed for the BF in HANSTEEL at present,some suggestions are given to improve efficiently the burning rate of pulverized coal in HANSTEEL,and the coal from Changzhi/Dawan is preferable to mixed coal injection.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第3期389-393,共5页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50774028)
关键词
未燃煤粉
岩相分析
燃烧率
除尘灰
配煤
UPC（unburnt pulverized coal）
lithofacies analysis
burning rate
dust ash
mixed coal
