Metallurgical property of mixed burden based on a large scale iron ore droplet testing equipment
DI Hang1,HE Zhi-jun1,YAN Li-juan2,QIU Shuang1,ZHAN Wen-long1,ZHANG Jun-hong1
(1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China 2. Raw Material Management Center, Manufacturing Management Depart, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China)
Abstract:The shape and location of the cohesive zone in a BF were significantly affected by the softening dropping properties of the iron-bearing burden, which could further influence the BF stable smooth operation. The traditional iron ore droplet testing equipment at home and abroad couldn’t simulate the complicated BF burden in the actual production objectively due to the small crucible size used and few samples taken in the experiment, and the experiment results were fluctuant and poor reproducibility. The metallurgical properties of different BF burdens were detected based on a large scale iron ore droplet testing equipment with independent intellectual property rights. By comparing the large equipment testing results with the traditional testing results, it was found that the[td]value tested by the large equipment was decreased with the lump ore proportion increasing, while the[S]value showed the opposite tendency. The main components of the primary slag were melilite and dicalcium silicate (C2S). Moreover, the[ΔP]value showed dynamic changes when it reached the peak value and the[ΔH]value increased distinctly, which were much closer to the BF practical production of the iron ore reduction process.
邸 航,何志军,阎丽娟,仇 爽,湛文龙,张军红. 基于大型铁矿石熔滴检测设备的综合炉料性能[J]. , 2018, 53(10): 90-94.
DI Hang,HE Zhi-jun,YAN Li-juan,QIU Shuang,ZHAN Wen-long,ZHANG Jun-hong. Metallurgical property of mixed burden based on a large scale iron ore droplet testing equipment. Iron and Steel, 2018, 53(10): 90-94.
Wu S, Su B, Liu X, et al. Optimisation of the blast furnace burden based on its primary slag formation behavior [J]. Ironmaking & Steelmaking, 2016, 43(1): 1-8.
[2]
Wu S, Su B, Liu X, et al. Optimisation of the blast furnace burden based on its primary slag formation behavior [J]. Ironmaking & Steelmaking, 2016, 43(1): 1-8.
Eng L, Tracy M, O&apos, et al. Lump ore and sinter behaviour during softening and melting [J]. ISIJ International, 2011, 51(6): 930-938.
[5]
Eng L, Tracy M, O&apos, et al. Lump ore and sinter behaviour during softening and melting [J]. ISIJ International, 2011, 51(6): 930-938.
[6]
Kaushik P, Fruehan R J. Mixed burden softening and melting phenomena in blast furnace operation Part 1 - X-ray observation of ferrous burden [J]. Ironmaking & Steelmaking, 2006, 33(6): 507-519.
[6]
Kaushik P, Fruehan R J. Mixed burden softening and melting phenomena in blast furnace operation Part 1 - X-ray observation of ferrous burden [J]. Ironmaking & Steelmaking, 2006, 33(6): 507-519.
[7]
Yang W, Zhou Z, Pinson D, et al. A new approach for studying softening and melting behavior of particles in a blast furnace cohesive zone [J]. Metallurgical and Materials Transactions B, 2015, 46(2): 977-992.
[7]
Yang W, Zhou Z, Pinson D, et al. A new approach for studying softening and melting behavior of particles in a blast furnace cohesive zone [J]. Metallurgical and Materials Transactions B, 2015, 46(2): 977-992.
Wu S, Han H, Xu H, et al. Increasing lump ores proportion in blast furnace based on the high-temperature interactivity of iron bearing materials [J]. ISIJ International, 2010, 50(5): 686-694.
[13]
Wu S, Han H, Xu H, et al. Increasing lump ores proportion in blast furnace based on the high-temperature interactivity of iron bearing materials [J]. ISIJ International, 2010, 50(5): 686-694.
[14]
Kashihara Y, Iwai Y, Sato T, et al. Effect of unconsumed mixed small coke on permeability in lower part of blast furnace [J]. Transactions of the Iron & Steel Institute of Japan, 2015, 55(6): 1237-1244.
[14]
Kashihara Y, Iwai Y, Sato T, et al. Effect of unconsumed mixed small coke on permeability in lower part of blast furnace [J]. Transactions of the Iron & Steel Institute of Japan, 2015, 55(6): 1237-1244.