Study on the Mechanism of Particle Breakage under New Composite Loads
Keywords:bonded particle model, breakage behavior, discrete element method, energy consumption, particle breakage
AbstractA theoretical model of particle breakage under a novel combination of dynamic and static loads is presented in this paper. In order to enhance the capability of the actual physical and mechanical properties towards rocks, parallel connector parameters of a bonded particle model (BPM) from the discrete element method (DEM) were investigated by uniaxial compression tests. Then, the efficiency evaluation index system of particle breakage was defined and different simulations of various parameters were set, i.e. the speed of the moving plate, the curvature of the moving plate, the curvature of the fixed plate, the space between the two plates, and the initial particle radius. The mechanism of particle breakage was analyzed by the relationships between the efficiency evaluation index and various parameters. The investigation of particle breakage theory and law can help to design and improve crushing equipment, reduce the energy consumption of the crusher, and improve the quality of the broken product.
Cleary, P.W. & Sinnott, M.D., Simulation of Particle Flows and Breakage in Crushers Using DEM: Part 1 - Compression Crushers, Minerals Engineering, 74, pp. 178-197, 2015.
Sinnott, M.D. & Cleary, P.W., Simulation of Particle Flows and Breakage in Crushers Using DEM: Part 2 - Impact Crushers, Minerals Engineering, 74, pp. 163-177, 2015.
Franklin, J.A. & Dusseault, M.B., Rock Engineering, New York: McGraw Hill Publishing Company, pp. 5-10, 1999.
Zang, Z.C., Zhao, C.F. & Zhang, X. Simulation Study on Influence of Load Position on Static Crushing Form of Ballasts, Railway Engineering, 11, pp. 152-156, 2014.
Lim, W.L., McDowell, G.R. & Collop, A.C., The Application of Weibull Statistics to the Strength of Railway Ballast, Granular Matter, 6(4), pp. 229-237, 2004.
Hu, Z.Z. Zhuang, Y.M., Cai & T.Y., Experimental Study on Energy Consumption and Particle Size Distribution of Single Particle Coal under Impact Crushing, Journal of China Coal Society, 40(S1), pp. 230-234, 2015.
Weedon, D.M. & Wilson, F., Modelling Iron Ore Degradation Using a Twin Pendulum Breakage Device, International Journal of Mineral Processing, 59, pp. 195-213, 2000.
Yu, S., The Establishment of Multi-scale Bounded Particle Model Based on Discrete Element Method and Impact Crushing Energy Consumption Analysis, Thesis, Jiangxi University of Science and Technology, Ganzhou, China, 2015.
Li, L.Y., Xu, Z.Q., Xie, H.P. & Ju, Y., Failure Experimental Study on Energy Laws of Rock under Differential Dynamic Impact Velocities. Journal of China Coal Society, 36(12), pp. 2007-2011(5), 2012.
Chen, T.F., Xu, J.Y., Liu, S., Wang, P. & Fang, X.Y., Research on Rock Energy Evolution in the Process of Impact Compression Failure, Chinese Journal of Underground Space and Engineering, S1, pp. 1477-1482, 2013.
Cleary, P.W. & Morrison, R.D., Prediction of 3D Slurry Flow within the Grinding Chamber and Discharge from a Pilot Scale SAG Mill, Minerals Engineering, 39, pp. 184-195, 2012.
Hossain, Z., Indraratna, B., Darve, F. & Thakur, P.K., DEM Analysis of Angular Ballast Breakage under Cyclic Loading, Geomechanics and Geoengineering, 2(3), pp. 175-181, 2007.
Morrison, R. & Cleary, P.W., Using DEM to Model Ore Breakage within a Pilot Scale Sag Mill, Minerals Engineering, 17, pp. 1117-1124, 2004.
Kamali-Asl, A., Bijay, K.C., Foroutan, M., Ghazanfari, E., Cladouhos, T.T. & Stevens, M. Stress-strain Response and Seismic Signature Analysis of Phyllite Reservoir Rocks from Blue Mountain Geothermal Field, Geothermics, 77, pp. 204-223, 2019.
Kamali-Asl, A., Ghazanfari, E., Newell, P. & Stevens, M., Elastic, Viscoelastic, and Strength Properties of Marcellus Shale Specimens. Journal of Petroleum Science and Engineering, 171, pp. 662-679, 2018.
Potyondy, D.O. & Cundall, P.A., A Bonded-particle Model for Rock, International Journal of Rock Mechanics and Mining Sciences, 41(8), pp. 1329-1364, 2004.
Cho, N., Martin, C.D. & Sego, D.C., A Clumped Particle Model for Rock, International Journal of Rock Mechanics and Mining Sciences, 44(7), pp. 997-1010, 2007.
Ingrid, T. & Marte, G. Coupled Hydro-thermo-mechanical Modeling of Hydraulic Fracturing in Quasi-brittle Rocks Using BPM-DEM, Journal of Rock Mechanics and Geotechnical Engineering, 09(01), pp. 92-104, 2017.
Narces, J.H., Gabriel, K.P. & Luis, M.T. Comparison of Breakage Models in DEM in Simulating Impact on Particle Beds, 29(3), pp. 692-706, 2018.
Zhao, G.Y., Dai, B. & Ma, C., Study of Effects of Microparameters on Macroproperties for Parallel Bonded Model, Chinese Journal Of Rock Mechanics And Engineering, 07, pp. 1491-1498, 2012.
Zhang, L., The Research on the Ore Crushing with High Pressure Grinding Rolls Based on Discrete Element Method, Thesis, Xiangtan University, China, 2016.
Daniel, L. & Ron, Z. Assessing the Energy Efficiency of a Jaw Crusher, Energy, 74, pp. 119-130, 2014.
Johannes, Q. & Carl, M.E., Cone Crusher Modelling and Simulation Using DEM. Minerals Engineering, 85, pp. 92-105, 2016.
Nicholas, J.B., Chen, J.F. & Jin, Y., A Bond Model for DEM Simulation of Cementitious Materials and Deformable Structures, Granular Matter, 16(3), pp. 299-311, 2014.
Guyon, E. & Troadec, J.P., Du Sac de Billes Au Tas de Sable, Odile JACOB Sciences, Paris, 1994.