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Numerical Investigation of Burden Distribution in a Blast Furnace
Author(s) -
Liu Sida,
Zhou Zongyan,
Dong Kejun,
Yu Aibing,
Pinson David,
Tsalapatis John
Publication year - 2015
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201400360
Subject(s) - blast furnace , angle of repose , mechanics , materials science , discrete element method , work (physics) , particle (ecology) , distribution (mathematics) , structural engineering , mechanical engineering , metallurgy , engineering , composite material , mathematics , mathematical analysis , physics , oceanography , geology
Burden distribution plays an important role in achieving stable and efficient operation in a modern ironmaking blast furnace. In this process, burden materials are charged and distributed to the throat region, and further affect gas distribution and blast furnace performance. In this work, a model based on discrete element method is established. In particular, the surface properties of spherical particles are first justified in terms of angle of repose aiming to reflect the effect of particle shape. The proper values of sliding friction and rolling friction coefficients for different burden materials are then recommended. Burden trajectories from the rotating chute and burden layers formed at the throat region are compared with physical experiments, showing consistent results. The effects of some key variables such as chute angle and friction coefficients are also examined. The results indicate that burden trajectories are not sensitive to sliding and rolling friction coefficients. But those variables should be properly set to obtain reasonable burden layer profiles.