（1. Third Iron-making Plant， Ma’anshan Iron and Steel Co.， Ltd.， Ma’anshan 243000， Anhui， China 2. School of Metallurgical Engineering， Anhui University of Technology， Ma’anshan 243032， Anhui， China）
Abstract：Increasing the quantity of powdered coal injection in blast furnace has very important effect on reducing coke ratio. Six kinds of raw coal pulverized coal and four kinds of mixed pulverized coal of blast furnace were taken ，then the experimental materials， the industrial analysis， the coal petrography analysis and the thermal gravimetric analysis were studied in this experiment. Besides， the effects of oxygen enrichment， granularity， air temperature on the combustibility of pulverized coal were studied as well. The results showed that with the increasing of the oxygen enrichment， it has a great effect on the combustibility of bituminous coal and soft coal and has little effect on the combustibility of hard coal. The granularity has a great influence on the combustibility of bituminous coal and soft coal， and the combustibility of hard coal was significantly improved only when the 0.074 mm of coal was more than 65%.With the temperature of the hot air increasing， the combustibility of bituminous coal was increased most. In addition， it also has a certain effect on the soft coal combustibility and small effect on the combustibility of hard coal. In coal blending，the ratio of soft coal should be increased， the ratio of hard coal should be reduced and the ratio of bituminous coal should be stabilize. When the coal rate of the 4 000 m3 blast furnace increased from 140 to 160 kg/t in Masteel， the increase of unburned pulverized coal in the blast furnace dust was only 2.22 kg/t.
收稿日期: 2018-04-12
出版日期: 2018-12-24
引用本文:
高 鹏，赵丹宁，王 平，李华军，余长有，魏汝飞. 马钢4 000 m3高炉喷吹煤粉燃烧性能研究与应用[J]. , 2018, 53(12): 10-17.
GAO Peng，ZHAO Dan-ning，WANG Ping，LI Hua-jun，YU Chang-you，WEI Ru-fei. Study and application on combustibility of pulverized coal injection at 4 000 m3 BF of Masteel. Iron and Steel, 2018, 53(12): 10-17.
2018, Vol. 53 
