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Physical Modeling Evaluation on Refining Effects of Ladle with Different Purging Plug Designs
Author(s) -
Tan Fangguan,
He Zhu,
Jin Shengli,
Pan Liping,
Li Yawei,
Li Baokuan
Publication year - 2020
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.201900606
Subject(s) - ladle , slag (welding) , refining (metallurgy) , mixing (physics) , materials science , volumetric flow rate , spark plug , water model , service life , inclusion (mineral) , metallurgy , composite material , mechanics , chemistry , mineralogy , mechanical engineering , engineering , physics , computational chemistry , quantum mechanics , molecular dynamics
Circular slits are introduced in purging plugs for alleviating the stress concentration to prolong their service life. Herein, the effects of slits with different geometries on the mixing time, inclusion removal rate, and slag eye area are studied by water model method. Experimental results show that the inclusion removal rate decreases with increasing slit angle for the gas flow rate of less than 6.02 NL min −1 . Moreover, with slit diameter increases, the mixing time and inclusion removal rate decrease when a gas flow rate is less than 5.26 NL min −1 . The slag eye area increases with increasing slit diameter, and the slit angle has a positive influence on the formation of the slag eye. Finally, the optimization of the mixing time and inclusion removal rate for less consumption of stirring energy and less slag entrapment indicates that the smaller the slag eye area is, the better the refining effect is.