In order to improve the whirling phenomenon of SiN particles in the granulation chamber, the influence of the structure of the granulation chamber on the internal distribution is explored. Euler Euler’s two-phase flow model is established. The flow field in the combined structure granulation chamber with different layout is simulated. The volume distribution and velocity field change of SiN particles in the combined structure granulation chamber with different layout are analyzed. The results show that the angle between two adjacent composite structures is 20, 60, 80 and completely standard the SiN particles with volume fraction index greater than 0.8 account for 10.2%, 11.5%, 12.5% and 6.7% of the total volume respectively. When the combined structure is completely standard, several small convolutions are found. The whirling phenomenon in the granulation chamber is improved. When the angle between two adjacent composite structures is 20, 60, 80 and complete standard, the proportion of qualified particles is 59%, 64%, 66% and 68%. The fluidity index is 84, 85, 87 and 88, respectively. To sum up, the combination structure of the granulation chamber is a complete standard, it is beneficial to improve the spin phenomenon of SiN particles in the granulation chamber.
HuangC.ZouB.LiuY. et al., Study on friction characterization and wear-resistance properties of Si3N4 ceramic sliding against different high-temperature alloys, Ceramics International42(15) (2016), 17210–17221.
2.
XuZ.ShiX.ZhangQ. et al., Wear and friction of TiAl matrix self-lubricating composites against Si3N4 in air at room and elevated temperatures, Tribology Transactions57(6) (2014), 1017–1027.
3.
D’AntonioJ.A.CapelloW.N. and NaughtonM., Ceramic bearings for total hip arthroplasty have high survivorship at 10 years, Clinical Orthopaedics and Related Research470(2) (2012), 373–381.
4.
ThompsonS.C.PanditA.PadtureN.P. et al., Stepwise-graded Si3N4-SiC ceramics with improved wear properties, Journal of the American Ceramic Society85(8) (2002), 2059–2064.
5.
WangL.Q.JiaH.XZhengD.Z. et al., Advances in high reliability ceramic bearing technology, Aeroengine39(2) (2013), 6–13.
6.
HvizdošP.DuszaJ. and BalázsiC., Tribological properties of Si3N4-graphene nanocomposites, Journal of the European Ceramic Society33(12) (2013), 2359–2364.
7.
KalyonD.M. and MalikM., Axial laminar flow of viscoplastic fluids in a concentric annulus subject to wall slip, Rheologica Acta51(9) (2012), 805–820.
8.
ErginH.MertK.DurgutE. et al., Development of a semi-wet process for ceramic floor tile granule production, Advances in Science and Technology92(5) (2014), 115–120.
9.
MehdipourI. and KhayatK.H., Effect of particle-size distribution and specific surface area of different binder systems on packing density and flow characteristics of cement paste, Cement and Concrete Composites78(12) (2017), 120–131.
10.
TingS.YinH.U.WentanW. et al., Simulation of solid suspension in a stirred tank using CFD-DEM coupled approach, Chinese Journal of Chemical Engineering45(10) (2013), 1069–1081.
11.
WangG.C.ZhouS.J.YangF.L. et al., A CFD study of an up- and a down-pumping PBT impeller in solid-liquid stirred tank, Advanced Materials Research354(41) (2012), 696–700.
12.
LanW.LiS.WangY. et al., CFD simulation of droplet formation in microchannels by a modified level set method, Industrial & Engineering Chemistry Research53(12) (2014), 4913–4921.
13.
WuF.BaiJ.ZhangJ. et al., CFD simulation and optimization of mixing behaviors in a spouted bed with a longitudinal vortex, ACS Omega4(5) (2019), 8214–8221.
14.
SunY.YuZ.ZhangL. et al., Structure optimization of a rotating zigzag bed via computational fluid dynamics simulation, Industrial & Engineering Chemistry Research53(35) (2014), 13764–13772.
15.
LiangY.N.GaoD.R. and BaiL., Numerical simulation of laminar flow field and mixing time in a double-layer propeller mixing tank, Journal of Mechanical Engineering51(16) (2015), 185–195.
16.
LiJ.DengB.ZhangB. et al., CFD simulation of an unbaffled stirred tank reactor driven by a magnetic rod: Assessment of turbulence models, Water Science & Technology72(8) (2015), 1308–1318.
17.
LiangY.N., Numerical simulation of the laminar flow field in stirred tank with double layer combined impeller stirring eccentrically, Applied Mechanics and Materials779 (2015), 125–132.
18.
YenL.HungL.L.ChihW.C. et al., Effects of baffle configuration and tank size on spherical agglomerates of dimethyl fumarate in a common stirred tank, International Journal of Pharmaceutics495(2) (2015), 886–894.
19.
AtibeniR.GaoZ. and BaoY., Effect of baffles on fluid flow field in stirred tank with floating particles by using PIV, Canadian Journal of Chemical Engineering91(3) (2013), 570–578.
20.
SinghH.FletcherD.F. and NijdamJ.J., An assessment of different turbulence models for predicting flow in a baffled tank stirred with a Rushton turbine, Chemical Engineering Science66(23) (2011), 5976–5988.
21.
FathiR.S.DhibR. and EinM.F., Using a novel CFD model to assess the effect of mixing parameters on emulsion polymerization, Macromolecular Reaction Engineering10(2) (2016), 108–122.
22.
LiaoD.H.ZhuZ.X.WuN.X. et al., Optimization of baffle number of granulation chamber for ceramic dry powder based on CFD, Bulletin of the Chinese Ceramic Society260(5) (2018), 176–183.
23.
YangF.L.ZhouS.J.WangG.C. et al., Numerical simulation of turbulent flow in a non-standard baffle stirred tank, Chemical Engineering Journal of Chinese Universities00(6) (2012), 952–958.
24.
JiangZ.T.NingX.ZhaoZ.Y. et al., Effect of single wall structure on Zirconia particles mixing process by dry granulation, Chinese Ceramics12 (2019), 33–41.
