Abstract
The spout-fluidizing characteristics of high-carbon ferromanganese powders with different sizes and masses were studied via a plexiglass spout-fluidized bed with an inner diameter of 30 mm and a height of 1000 mm. The relationships between bed voidage and such parameters as bed height, particle size, fluidizing air velocity, and air flow were obtained. Experimental results show that the powder material with high density can be fluidized in the spout-fluidized bed where the particle size is a key factor influencing the quality of fluidization.
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Abbreviations
- ɛ :
-
Bed voidage, %
- ν L :
-
Actual volume of the fluidization bed layer
- ν S :
-
True volume of powders (the ratio of mass to true density of powders)
- U mf :
-
Critical fluidization velocity, m·s−1
- d p :
-
Average diameter of solid particles, mm
- ρ f, ρ s :
-
Density of air and high-carbon ferromanganese powders respectively, kg·m−3
- μ :
-
Dynamic viscosity of air, Pa·s
- H s :
-
Bed height, mm
- D t :
-
Inner diameter of the spout-fluidized bed, mm
- g :
-
Acceleration of gravity, m·s−2
- α :
-
Spout-fluidized factor
- d e :
-
Inlet diameter, mm
- M :
-
Mass of adding material, kg
- M l :
-
Maximum mass of fluidizing material, kg
References
S.L. Ye and Y.L. Yang, The source of carbon in medium-low carbon ferromanganese and the way of reducing carbon content, Chin. Manganese Ind., 13(1995), No.2, p.26.
K. Atsushi, The new developments of medium-low carbon ferromanganese smelting technology, Jiangxi Metall., 9(1989), No.5, p.50.
Y. Wang, Y. Cheng, Y. Jin, et al., On impacts of solid properties and operating conditions on the performance of gas-solid fluidization systems, Powder Technol., 172(2007), No.3, p.167.
B.L. Liu, J.C. Jiang, J.F. Yue, et al., Study on fluidization velocity of sawdust in cold bubbling fluidized bed, Chem. Ind. For. Prod., 27(2007), No.3, p.49.
G.Y. Chen, M.X. Fang, Z.Y. Luo, et al., A study of the fluidization and mixing characteristics of rice husk, quartz sand and pulverized coal, J. Eng. Therm. Energy Power, 13(1998), No.5, p.321.
H.Q. Liang, A.R. Li, and Y. Zhou, Actuality of fluidization on ultrafine particles, J. Sichuan Inst. Light Ind. Chem. Technol., 16(2003), No.3, p.37.
X.G. Li, D.L. Xu, G.X. Xiao, et al., Characterization of gas-solid fluidization with large-particle, J. Xi’an Univ. Sci. Technol., 23(2003), No.4, p.425.
S.F. Ding, Study on the parameter of fluidization characteristics in the fluidized bed, Clean Coal Technol., 14(2008), No.1, p.19.
W.G. Fan, Fluidization properties study of 0.3∼0.15 mm boron iron ore, Coal Prep. Technol., 36(2008), No.4, p.38.
Y.B. Zhang, Election of Fluidization, Northwestern University Press, Xi’an, 1989, p.90.
J.X. Zhu and J. Hong, Development and current status of research on spouted beds, Chem. React. Eng. Technol., 13(1997), No.2, p.207.
W. Bu, R. Cheng, and Y.P. Deng, Research development and industry application in the granulation of spouted-fluidized bed, Zhejiang Chem. Ind., 39(2008), No.5, p.15.
K.B. Mathur and P.E. Gishler, A study of the application of the spouted bed technique to wheat drying, J. Appl. Chem., 5(1955), No.11, p.624.
L. Zhang and J. Zhao, Study on the flow characters of spout fluid bed, Chem. React. Eng. Technol., 13(1997), No.1, p.65.
W.W. Liu, Q. Xu, F. An, et al., Design research of spouted bed, Chem. Equip. Technol., 28(2007), No.6, p.11.
Y.F. Mao and Y.J. Yan, Minimum spouting-fluidization velocity and pressure drop in a spouting-fluidized bed with draft tube, Eng. Chem. Metall., 20(1999), No.2, p.136.
K.B. Mathur and N. Epstein, Developments in spouted bed technology, Can. J. Chem. Eng., 52(1974), No.2, p.129.
A.F. Dolidovich and V.S. Efremtsev, Experiemental study of the thermal granulation process in a spouted bed, Can. J. Chem. Eng., 61(1983), No.3, p.454.
F.X. Tang and J.Y. Zhang, Multi-factor effects on and correlation of minimum spout-fluidizing velocity in spout-fluid beds, J. Chem. Ind. Eng. China, 55(2004), No.7, p.1083.
J. Fang, Sticking problem in fluidized bed iron ore reduction, Iron Steel, 26(1991), No.5, p.11.
T. Jiang and M.S. Chu, Experimental investigation on the sticking and defluidizing of fluidized bed, J. Benxi Coll. Metall., 1(1999), No.4, p.14.
J.G. Deng, Powder Materials, University of Electronic Science and Technology Press, Xi’an, 2007, p.35.
X.J. Zhang, Z.H. Han, and W.H. Liu, Calculation and application of fluidization velocity, Northeast. Electr. Power. Technol., 19(1999), No.1, p.16.
Y.Q. Xu, Q.J. Guo, C.D. Si, et al., Fluidization properties in microscale fluidized beds, Chin. J. Process Eng., 9(2009), No.2, p.209.
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This work was jointly sponsored by National Natural Science Foundation of China and Baosteel Group Corporation (No.50974149).
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Chen, J., Shi, Wl., Zhao, J. et al. Cold-state spout-fluidizing characteristics of high-carbon ferromanganese powders. Int J Miner Metall Mater 18, 741–747 (2011). https://doi.org/10.1007/s12613-011-0505-y
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DOI: https://doi.org/10.1007/s12613-011-0505-y