Rational burden structure by droplet test in Xuan Steel blast furnace
Lü Qing1，WANG Fu-jia1，LI Hao-jie2
1. College of Metallurgy and Energy，North China University of Science and Technlogy，Tangshan 063009，Hebei，China 2. Xuan Steel Company，He Steel Group，Xuanhua 075000，Hebei，China
Abstract：Experiments were carried out in the lab to analyze the chemical compositions of 12 kinds of titanium-containing blast furnace burden and their droplet comprehensive performance of Xuan Steel in order to determine the best burden structure of Xuan Steel No.2 blast furnace (2 500 m3), No.3 blast furnace (2 000 m3) and No.4 blast furnace (1 800 m3) under different conditions of raw materials, and the three groups of burden structure were compared. The result showed that the best burden droplet performance was No.4 scheme for No.2 blast furnace and its[S]value was 322 kPa·℃. The best burden droplet performance was No.5 scheme for No.3 blast furnace and its[S]value was 786 kPa·℃ and the best burden droplet performance was No.11 scheme for No.4 blast furnace and its[S]value was 790 kPa·℃. Compared with the No.2 blast furnace, the alkalinity of charge into the No.3 and No.4 blast furnace was higher which was the main reason for a higher maximum differential pressure[（Δpmax）] for No.3 and No.4 blast furnace. With high iron content in the charge and lower mass percent of MgO in the slag, the slag amount was relatively reduced in cohesive dropping zone and the fluidity of slag became good. Hence, the droplet performance in No.2 blast furnace was better than that of No.3and No.4 blast furnace.
吕 庆，王福佳，李豪杰. 宣钢高炉合理炉料结构熔滴试验[J]. 钢铁, 2016, 51(6): 19-25.
Lü Qing，WANG Fu-jia，LI Hao-jie. Rational burden structure by droplet test in Xuan Steel blast furnace. Iron and Steel, 2016, 51(6): 19-25.
2016, Vol. 51 
