[1] Ma Dengcheng, Gui Xue, Li Xuan, Ma Chenglin, et al. Simulation analysis of significance and interaction ofinfluencing factors on mixing uniformity ofdouble-drum recycling mixing plant [J]. Journal of Southeast University (English Edition), 2022, 38 (2): 158-165. [doi:10.3969/j.issn.1003-7985.2022.02.007]

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Simulation analysis of significance and interaction ofinfluencing factors on mixing uniformity ofdouble-drum recycling mixing plant()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

38

Issue:

2022 2

Page:

158-165

Research Field:

Traffic and Transportation Engineering

Publishing date:

2022-06-20

Info

Title:

Simulation analysis of significance and interaction ofinfluencing factors on mixing uniformity ofdouble-drum recycling mixing plant

Author(s):

Ma Dengcheng¹;  Gui Xue²;  Li Xuan¹;  Ma Chenglin¹

¹ National Engineering Laboratory for Road Maintenance Equipment, Chang’an University, Xi’an, 710064, China
² Shaanxi Zhonglin Asphalt Pavement Maintenance Technology Co., Ltd., Xi’an 710000, China

Keywords:

double-drum recycling mixing station;  mixing uniformity;  response surface method;  discrete element method;  significance and interaction analysis

PACS:

U426.52

DOI:

10.3969/j.issn.1003-7985.2022.02.007

Abstract:

To examine the influence of the structural parameters and working parameters of a double-drum regeneration mixing station on its mixing uniformity, the influence of the discrete element method and response surface method on the uniformity of the aggregate mixing when the interaction between two different factors was analyzed. A mathematical model of the influence of various factors and interactions on the coefficient of variation of the aggregates was established. The matching of each parameter was optimized with the goal of minimizing the coefficient of variation. The results show that when the aggregate particle size is different, the significance of each parameter affecting its mixing uniformity is also different. Moreover, increasing the speed and reducing the axial installation angle of the blade can reduce the coefficient of variation of the three aggregates. To obtain a good mixing uniformity, the mixing-arm phase angle when the drum inclination angle is large should be smaller than the phase angle when the drum inclination angle is small, and the mixing of large particles should not be arranged with a large mixing-arm phase angle. With a blade radial installation angle of 38°, a blade axial installation angle of 35°, a drum inclination angle of 6°, a drum rotation speed of 10 r/min, and a mixing-arm phase angle of 32°, the aggregate as a whole can exhibit the best mixing uniformity.

References:

[1] Ma D C, Liu K. Modeling and simulation of mixing uniformity of double drum regenerative mixing equipment [J]. Journal of Huazhong University of Science and Technology(Natural Science edition), 2020, 29(3):17-21. DOI:10.13245/j.hust.200302. (in Chinese)
[2] Liu B, Li Z G, Da Y F. Study on the inclination angle of outer cylinder mixing blade of double drum continuous mixing equipment[J]. Highways & Automotive Applications, 2014(4):150-152.(in Chinese)
[3] Zhao L J, Shen Y, Deng X, et al. Parameters matching of mixing blades for asphalt mixture mixer based on EDEM [J]. Journal of Zhengzhou University(Engineering Science edition), 2019, 40(3):79-84.DOI:10.13705/j.issn.1671-6833. 2018.06.005(in Chinese)
[4] Simons T A H, Bensmann S, Zigan S, et al. Characterization of granular mixing in a helical ribbon blade blender[J]. Powder Technology, 2016, 293(5):1-11.DOI:10.1016/j.powtec.2015.11.041
[5] Sakai M, Shigeto Y, Basinskas G, et al. Discrete element simulation for the evaluation of solid mixing in an industrial blender[J].Chemical Engineering Journal, 2015, 279(11):821-839.DOI:10.1016/j.cej.2015.04.130
[6] Milstead J. Asphalt drum mixer with curved scoop-like mixing tips:US5380082[P]. Chattanooga, TN, USA: Astec Inductries, Inc., 1995-10-01.
[7] Larry W, Hudman J, Michael C. Method and apparatus for adapting asphalt dryer/mixer to minimize asphalt build-up: US8172448[P]. Chattanooga, TN, USA: Astec Inductries, Inc., 2009-09-03.
[8] Wallevik J E, Wallevik O H. Analysis of shear rate inside a concrete truck mixer[J].Cement and Concrete Research, 2017, 95: 9-17.DOI:10.1016/j.cemconres.2017.02.007
[9] Mohajeri M, Molenaar A A A. Blending of virgin bitumen and RA binder in mixtures with high amounts of RA[J]. Advances in Asphalt Materials, 2015:363-392. DOI:10.1080/14680629. 2019. 1663244
[10] Zhao L Y, Gu H R, Ye M. Differential double drum agitation uniformity modeling and multi-target parameter optimization[J]. Journal of Huazhong University of Science and Technology, 2021, 49(12):1-7.DOI:10.13245/j.hust.220205. (in Chinese)
[11] Ma D C. Lan F. Numerical simulation analysis on multi-layer low-temperature heating method of asphalt pavement in hot in-place recycling[J].Journal of Central South University, 2020, 27(12):3793-3806.DOI: 10.1007/S11771-020-4577-6.
[12] Gao X.The dust removal system research of double drum type continuous regeneration asphalt mixing equipment[D]. Changsha: Changsha University of Science and Technology, 2015.(in Chinese)
[13] Zhong P H. Research on metering system in the continuous drum asphalt mixing plant[D].Xi’an: Chang’an University, 2013.(in Chinese)
[14] Huang K, Xu T, Li G F.The feasibility of DEM to analyze the temperature field of asphalt mixture[J]. Construction and Building Materials, 2016, 106:592-599.DOI:10.1016/j.conbuildmat.2015.12. 192.
[15] Zhang C G, Jiao S J, Xie L Y, et al. Modeling and simulation of material curtain density for asphalt mixing plant rotary dryer [J]. Journal of Huazhong University of Science and Technology(Natural Science Edition), 2017, 45(5):55-60.DOI:10.13245/j.hust. 170511(in Chinese)
[16] Shi H Q.Simulation of mixing asphalt mixture based on EDEM[D]. Xi’an: Chang’an University, 2017.(in Chinese)
[17] Zhang S J.Study and simulation analysis of the twin horizontal shaft mixer for asphalt mixture mixing experiment[D]. Xi’an: Chang’an University, 2018.(in Chinese)

Memo

Memo:

Biographies: Ma Dengcheng(1981—), male, doctor, associate professor, mdc8235@163.com.
Foundation items: The Natural Science Basic Research Plan in Shaanxi Province(No.2017JM5077), the Fundamental Research Funds for the Central Universities under Grant(No.300102259109).
Citation: Ma Dengcheng, Gui Xue, Li Xuan, et al. Simulation analysis of significance and interaction of influencing factors on mixing uniformity of double-drum recycling mixing plant[J].Journal of Southeast University(English Edition), 2022, 38(2):158-165.DOI:10.3969/j.issn.1003-7985.2022.02.007.

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